/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06.c


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This is Ultimate 0.1.24-fb55353
[2019-11-06 19:00:14,838 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-06 19:00:14,889 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-11-06 19:00:14,907 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 19:00:14,908 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 19:00:14,909 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 19:00:14,909 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 19:00:14,909 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 19:00:14,910 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 19:00:14,910 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 19:00:14,910 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 19:00:14,910 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 19:00:14,911 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 19:00:14,911 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 19:00:14,911 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 19:00:14,912 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 19:00:14,912 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 19:00:14,912 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 19:00:14,912 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 19:00:14,912 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 19:00:14,914 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 19:00:14,914 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 19:00:14,914 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 19:00:14,915 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 19:00:14,915 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:00:14,915 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 19:00:14,915 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 19:00:14,915 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 19:00:14,916 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 19:00:14,916 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 19:00:14,916 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 19:00:14,916 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 19:00:15,188 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 19:00:15,204 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 19:00:15,208 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 19:00:15,210 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 19:00:15,210 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 19:00:15,211 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06.c
[2019-11-06 19:00:15,285 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dfbca6fb/d0cb4e9ba6764501a8da68a422f39439/FLAG5751787a4
[2019-11-06 19:00:15,945 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 19:00:15,947 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label06.c
[2019-11-06 19:00:15,965 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dfbca6fb/d0cb4e9ba6764501a8da68a422f39439/FLAG5751787a4
[2019-11-06 19:00:16,124 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4dfbca6fb/d0cb4e9ba6764501a8da68a422f39439
[2019-11-06 19:00:16,131 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 19:00:16,132 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 19:00:16,133 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 19:00:16,133 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 19:00:16,137 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 19:00:16,137 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:00:16" (1/1) ...
[2019-11-06 19:00:16,140 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45d5e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:16, skipping insertion in model container
[2019-11-06 19:00:16,140 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:00:16" (1/1) ...
[2019-11-06 19:00:16,147 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 19:00:16,234 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 19:00:17,011 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:00:17,017 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 19:00:17,294 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:00:17,320 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 19:00:17,322 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:17 WrapperNode
[2019-11-06 19:00:17,322 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 19:00:17,323 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 19:00:17,323 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 19:00:17,323 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 19:00:17,338 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:17" (1/1) ...
[2019-11-06 19:00:17,339 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:17" (1/1) ...
[2019-11-06 19:00:17,382 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:17" (1/1) ...
[2019-11-06 19:00:17,382 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:17" (1/1) ...
[2019-11-06 19:00:17,438 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:17" (1/1) ...
[2019-11-06 19:00:17,463 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:17" (1/1) ...
[2019-11-06 19:00:17,479 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:17" (1/1) ...
[2019-11-06 19:00:17,494 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 19:00:17,495 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 19:00:17,495 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 19:00:17,495 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 19:00:17,496 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:17" (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
[2019-11-06 19:00:17,570 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 19:00:17,571 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 19:00:17,571 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-11-06 19:00:17,571 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 19:00:17,571 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-11-06 19:00:17,572 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 19:00:17,572 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-06 19:00:17,572 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-11-06 19:00:17,572 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 19:00:17,572 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 19:00:17,573 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 19:00:19,625 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 19:00:19,626 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-11-06 19:00:19,627 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:00:19 BoogieIcfgContainer
[2019-11-06 19:00:19,628 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 19:00:19,629 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 19:00:19,629 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 19:00:19,633 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 19:00:19,634 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:00:16" (1/3) ...
[2019-11-06 19:00:19,635 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e2ea09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:00:19, skipping insertion in model container
[2019-11-06 19:00:19,635 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:17" (2/3) ...
[2019-11-06 19:00:19,636 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33e2ea09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:00:19, skipping insertion in model container
[2019-11-06 19:00:19,637 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:00:19" (3/3) ...
[2019-11-06 19:00:19,638 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem03_label06.c
[2019-11-06 19:00:19,650 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 19:00:19,659 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 19:00:19,675 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 19:00:19,713 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 19:00:19,713 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 19:00:19,714 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 19:00:19,714 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 19:00:19,714 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 19:00:19,714 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 19:00:19,714 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 19:00:19,715 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 19:00:19,744 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states.
[2019-11-06 19:00:19,763 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 176
[2019-11-06 19:00:19,763 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:19,765 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:00:19,768 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:19,776 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:19,777 INFO  L82        PathProgramCache]: Analyzing trace with hash 1888144736, now seen corresponding path program 1 times
[2019-11-06 19:00:19,791 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:19,791 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481455690]
[2019-11-06 19:00:19,792 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:20,111 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:20,650 WARN  L191               SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:20,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:20,746 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:00:20,747 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481455690]
[2019-11-06 19:00:20,748 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:00:20,748 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 19:00:20,750 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485750525]
[2019-11-06 19:00:20,755 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:00:20,756 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:20,769 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:00:20,770 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:00:20,772 INFO  L87              Difference]: Start difference. First operand 311 states. Second operand 5 states.
[2019-11-06 19:00:20,996 WARN  L191               SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:00:21,498 WARN  L191               SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2019-11-06 19:00:25,208 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:25,208 INFO  L93              Difference]: Finished difference Result 1107 states and 1968 transitions.
[2019-11-06 19:00:25,209 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:00:25,210 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 175
[2019-11-06 19:00:25,212 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:25,234 INFO  L225             Difference]: With dead ends: 1107
[2019-11-06 19:00:25,235 INFO  L226             Difference]: Without dead ends: 699
[2019-11-06 19:00:25,244 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2019-11-06 19:00:25,265 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 699 states.
[2019-11-06 19:00:25,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 474.
[2019-11-06 19:00:25,338 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 474 states.
[2019-11-06 19:00:25,342 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 720 transitions.
[2019-11-06 19:00:25,345 INFO  L78                 Accepts]: Start accepts. Automaton has 474 states and 720 transitions. Word has length 175
[2019-11-06 19:00:25,348 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:25,349 INFO  L462      AbstractCegarLoop]: Abstraction has 474 states and 720 transitions.
[2019-11-06 19:00:25,349 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:00:25,350 INFO  L276                IsEmpty]: Start isEmpty. Operand 474 states and 720 transitions.
[2019-11-06 19:00:25,362 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 188
[2019-11-06 19:00:25,363 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:25,363 INFO  L410         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:00:25,363 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:25,367 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:25,367 INFO  L82        PathProgramCache]: Analyzing trace with hash 1588270708, now seen corresponding path program 1 times
[2019-11-06 19:00:25,368 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:25,368 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453888730]
[2019-11-06 19:00:25,368 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:25,471 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:25,719 WARN  L191               SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:25,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:25,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:25,892 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:00:25,892 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453888730]
[2019-11-06 19:00:25,892 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110297428]
[2019-11-06 19:00:25,893 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:26,116 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:26,121 INFO  L256         TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-11-06 19:00:26,135 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:00:26,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:00:26,209 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:00:26,209 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7
[2019-11-06 19:00:26,210 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206108481]
[2019-11-06 19:00:26,211 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:00:26,211 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:26,212 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:00:26,212 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-11-06 19:00:26,212 INFO  L87              Difference]: Start difference. First operand 474 states and 720 transitions. Second operand 5 states.
[2019-11-06 19:00:27,789 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:27,789 INFO  L93              Difference]: Finished difference Result 1418 states and 2188 transitions.
[2019-11-06 19:00:27,791 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:00:27,791 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 187
[2019-11-06 19:00:27,791 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:27,799 INFO  L225             Difference]: With dead ends: 1418
[2019-11-06 19:00:27,799 INFO  L226             Difference]: Without dead ends: 950
[2019-11-06 19:00:27,802 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2019-11-06 19:00:27,804 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 950 states.
[2019-11-06 19:00:27,847 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 934.
[2019-11-06 19:00:27,849 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 934 states.
[2019-11-06 19:00:27,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1406 transitions.
[2019-11-06 19:00:27,855 INFO  L78                 Accepts]: Start accepts. Automaton has 934 states and 1406 transitions. Word has length 187
[2019-11-06 19:00:27,855 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:27,856 INFO  L462      AbstractCegarLoop]: Abstraction has 934 states and 1406 transitions.
[2019-11-06 19:00:27,856 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:00:27,856 INFO  L276                IsEmpty]: Start isEmpty. Operand 934 states and 1406 transitions.
[2019-11-06 19:00:27,864 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 203
[2019-11-06 19:00:27,865 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:27,866 INFO  L410         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:00:28,071 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:28,072 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:28,072 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:28,073 INFO  L82        PathProgramCache]: Analyzing trace with hash -73894969, now seen corresponding path program 1 times
[2019-11-06 19:00:28,073 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:28,073 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464175644]
[2019-11-06 19:00:28,073 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:28,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:28,341 WARN  L191               SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:28,345 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:28,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:28,562 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:00:28,562 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464175644]
[2019-11-06 19:00:28,563 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:00:28,564 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-06 19:00:28,564 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457802707]
[2019-11-06 19:00:28,565 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 19:00:28,566 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:28,574 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 19:00:28,575 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:00:28,576 INFO  L87              Difference]: Start difference. First operand 934 states and 1406 transitions. Second operand 9 states.
[2019-11-06 19:00:28,764 WARN  L191               SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:00:29,613 WARN  L191               SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:00:32,171 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:32,171 INFO  L93              Difference]: Finished difference Result 2788 states and 4384 transitions.
[2019-11-06 19:00:32,173 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2019-11-06 19:00:32,174 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 202
[2019-11-06 19:00:32,174 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:32,200 INFO  L225             Difference]: With dead ends: 2788
[2019-11-06 19:00:32,201 INFO  L226             Difference]: Without dead ends: 1860
[2019-11-06 19:00:32,206 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2019-11-06 19:00:32,208 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1860 states.
[2019-11-06 19:00:32,319 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 1826.
[2019-11-06 19:00:32,319 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1826 states.
[2019-11-06 19:00:32,330 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 2555 transitions.
[2019-11-06 19:00:32,331 INFO  L78                 Accepts]: Start accepts. Automaton has 1826 states and 2555 transitions. Word has length 202
[2019-11-06 19:00:32,331 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:32,331 INFO  L462      AbstractCegarLoop]: Abstraction has 1826 states and 2555 transitions.
[2019-11-06 19:00:32,331 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-06 19:00:32,331 INFO  L276                IsEmpty]: Start isEmpty. Operand 1826 states and 2555 transitions.
[2019-11-06 19:00:32,339 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 221
[2019-11-06 19:00:32,339 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:32,340 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:00:32,340 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:32,340 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:32,341 INFO  L82        PathProgramCache]: Analyzing trace with hash -1603258002, now seen corresponding path program 1 times
[2019-11-06 19:00:32,341 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:32,341 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525438227]
[2019-11-06 19:00:32,342 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:32,381 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:32,601 WARN  L191               SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:32,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:32,727 WARN  L191               SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2019-11-06 19:00:32,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:32,780 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:32,963 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-06 19:00:32,964 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525438227]
[2019-11-06 19:00:32,964 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181208517]
[2019-11-06 19:00:32,964 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:33,172 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:33,174 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1021 conjuncts, 8 conjunts are in the unsatisfiable core
[2019-11-06 19:00:33,193 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:00:33,343 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2019-11-06 19:00:33,343 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:00:33,344 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11
[2019-11-06 19:00:33,344 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118976842]
[2019-11-06 19:00:33,345 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-11-06 19:00:33,345 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:33,345 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-11-06 19:00:33,346 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-11-06 19:00:33,346 INFO  L87              Difference]: Start difference. First operand 1826 states and 2555 transitions. Second operand 11 states.
[2019-11-06 19:00:33,497 WARN  L191               SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:00:33,955 WARN  L191               SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2019-11-06 19:00:34,202 WARN  L191               SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:00:38,244 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:38,244 INFO  L93              Difference]: Finished difference Result 7244 states and 10859 transitions.
[2019-11-06 19:00:38,245 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-11-06 19:00:38,245 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 220
[2019-11-06 19:00:38,247 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:38,279 INFO  L225             Difference]: With dead ends: 7244
[2019-11-06 19:00:38,279 INFO  L226             Difference]: Without dead ends: 5424
[2019-11-06 19:00:38,286 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306
[2019-11-06 19:00:38,293 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5424 states.
[2019-11-06 19:00:38,448 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5424 to 5348.
[2019-11-06 19:00:38,449 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5348 states.
[2019-11-06 19:00:38,468 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 7374 transitions.
[2019-11-06 19:00:38,468 INFO  L78                 Accepts]: Start accepts. Automaton has 5348 states and 7374 transitions. Word has length 220
[2019-11-06 19:00:38,468 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:38,468 INFO  L462      AbstractCegarLoop]: Abstraction has 5348 states and 7374 transitions.
[2019-11-06 19:00:38,469 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-11-06 19:00:38,469 INFO  L276                IsEmpty]: Start isEmpty. Operand 5348 states and 7374 transitions.
[2019-11-06 19:00:38,483 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 221
[2019-11-06 19:00:38,483 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:38,484 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:00:38,690 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:38,691 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:38,692 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:38,692 INFO  L82        PathProgramCache]: Analyzing trace with hash -1338597659, now seen corresponding path program 1 times
[2019-11-06 19:00:38,693 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:38,693 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282842155]
[2019-11-06 19:00:38,693 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:38,738 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:38,922 WARN  L191               SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:38,925 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:39,035 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:39,059 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:39,287 INFO  L134       CoverageAnalysis]: Checked inductivity of 58 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-06 19:00:39,287 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282842155]
[2019-11-06 19:00:39,288 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899496141]
[2019-11-06 19:00:39,288 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:39,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:39,521 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-11-06 19:00:39,529 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:00:39,628 INFO  L134       CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2019-11-06 19:00:39,629 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:00:39,630 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9
[2019-11-06 19:00:39,630 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157436484]
[2019-11-06 19:00:39,631 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:00:39,631 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:39,631 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:00:39,631 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:00:39,632 INFO  L87              Difference]: Start difference. First operand 5348 states and 7374 transitions. Second operand 3 states.
[2019-11-06 19:00:40,617 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:40,617 INFO  L93              Difference]: Finished difference Result 10696 states and 14778 transitions.
[2019-11-06 19:00:40,618 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-06 19:00:40,619 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 220
[2019-11-06 19:00:40,622 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:40,645 INFO  L225             Difference]: With dead ends: 10696
[2019-11-06 19:00:40,645 INFO  L226             Difference]: Without dead ends: 5354
[2019-11-06 19:00:40,659 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:00:40,666 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5354 states.
[2019-11-06 19:00:40,789 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5354 to 5344.
[2019-11-06 19:00:40,792 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5344 states.
[2019-11-06 19:00:40,803 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 7091 transitions.
[2019-11-06 19:00:40,804 INFO  L78                 Accepts]: Start accepts. Automaton has 5344 states and 7091 transitions. Word has length 220
[2019-11-06 19:00:40,806 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:40,806 INFO  L462      AbstractCegarLoop]: Abstraction has 5344 states and 7091 transitions.
[2019-11-06 19:00:40,806 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-06 19:00:40,806 INFO  L276                IsEmpty]: Start isEmpty. Operand 5344 states and 7091 transitions.
[2019-11-06 19:00:40,821 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 222
[2019-11-06 19:00:40,821 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:40,821 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:00:41,027 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:41,027 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:41,027 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:41,029 INFO  L82        PathProgramCache]: Analyzing trace with hash -164266544, now seen corresponding path program 1 times
[2019-11-06 19:00:41,031 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:41,031 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436141632]
[2019-11-06 19:00:41,032 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:41,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:41,379 WARN  L191               SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:41,382 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:41,467 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:41,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:41,554 INFO  L134       CoverageAnalysis]: Checked inductivity of 51 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2019-11-06 19:00:41,555 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436141632]
[2019-11-06 19:00:41,555 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271612163]
[2019-11-06 19:00:41,555 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:41,765 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:41,767 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-11-06 19:00:41,772 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:00:41,826 INFO  L134       CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2019-11-06 19:00:41,827 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:00:41,827 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5
[2019-11-06 19:00:41,827 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104028293]
[2019-11-06 19:00:41,828 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:00:41,828 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:41,828 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:00:41,829 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:00:41,829 INFO  L87              Difference]: Start difference. First operand 5344 states and 7091 transitions. Second operand 3 states.
[2019-11-06 19:00:42,939 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:42,940 INFO  L93              Difference]: Finished difference Result 15194 states and 20552 transitions.
[2019-11-06 19:00:42,940 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-06 19:00:42,941 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 221
[2019-11-06 19:00:42,942 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:42,988 INFO  L225             Difference]: With dead ends: 15194
[2019-11-06 19:00:42,988 INFO  L226             Difference]: Without dead ends: 9856
[2019-11-06 19:00:43,000 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:00:43,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9856 states.
[2019-11-06 19:00:43,233 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9856 to 9837.
[2019-11-06 19:00:43,234 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9837 states.
[2019-11-06 19:00:43,252 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9837 states to 9837 states and 12946 transitions.
[2019-11-06 19:00:43,252 INFO  L78                 Accepts]: Start accepts. Automaton has 9837 states and 12946 transitions. Word has length 221
[2019-11-06 19:00:43,252 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:43,253 INFO  L462      AbstractCegarLoop]: Abstraction has 9837 states and 12946 transitions.
[2019-11-06 19:00:43,253 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-06 19:00:43,253 INFO  L276                IsEmpty]: Start isEmpty. Operand 9837 states and 12946 transitions.
[2019-11-06 19:00:43,282 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 248
[2019-11-06 19:00:43,282 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:43,282 INFO  L410         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:00:43,495 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:43,496 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:43,496 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:43,497 INFO  L82        PathProgramCache]: Analyzing trace with hash 212522786, now seen corresponding path program 1 times
[2019-11-06 19:00:43,497 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:43,497 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752525378]
[2019-11-06 19:00:43,497 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:43,559 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:43,727 WARN  L191               SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:43,729 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:43,809 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:43,823 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:43,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:43,946 INFO  L134       CoverageAnalysis]: Checked inductivity of 125 backedges. 83 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2019-11-06 19:00:43,946 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752525378]
[2019-11-06 19:00:43,946 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105743743]
[2019-11-06 19:00:43,947 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:44,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:44,195 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-11-06 19:00:44,203 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:00:44,345 INFO  L134       CoverageAnalysis]: Checked inductivity of 125 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2019-11-06 19:00:44,346 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:00:44,346 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11
[2019-11-06 19:00:44,346 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445577550]
[2019-11-06 19:00:44,347 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-11-06 19:00:44,348 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:44,348 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-11-06 19:00:44,348 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2019-11-06 19:00:44,348 INFO  L87              Difference]: Start difference. First operand 9837 states and 12946 transitions. Second operand 11 states.
[2019-11-06 19:00:44,534 WARN  L191               SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:00:44,926 WARN  L191               SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 131
[2019-11-06 19:00:47,090 WARN  L191               SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2019-11-06 19:00:49,347 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:49,347 INFO  L93              Difference]: Finished difference Result 19553 states and 27391 transitions.
[2019-11-06 19:00:49,347 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2019-11-06 19:00:49,348 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 247
[2019-11-06 19:00:49,348 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:49,390 INFO  L225             Difference]: With dead ends: 19553
[2019-11-06 19:00:49,390 INFO  L226             Difference]: Without dead ends: 9722
[2019-11-06 19:00:49,413 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420
[2019-11-06 19:00:49,423 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9722 states.
[2019-11-06 19:00:49,650 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9722 to 9491.
[2019-11-06 19:00:49,651 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9491 states.
[2019-11-06 19:00:49,668 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9491 states to 9491 states and 12126 transitions.
[2019-11-06 19:00:49,668 INFO  L78                 Accepts]: Start accepts. Automaton has 9491 states and 12126 transitions. Word has length 247
[2019-11-06 19:00:49,668 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:49,668 INFO  L462      AbstractCegarLoop]: Abstraction has 9491 states and 12126 transitions.
[2019-11-06 19:00:49,669 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-11-06 19:00:49,669 INFO  L276                IsEmpty]: Start isEmpty. Operand 9491 states and 12126 transitions.
[2019-11-06 19:00:49,695 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 280
[2019-11-06 19:00:49,696 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:49,696 INFO  L410         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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:00:49,902 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:49,902 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:49,903 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:49,903 INFO  L82        PathProgramCache]: Analyzing trace with hash -165293655, now seen corresponding path program 1 times
[2019-11-06 19:00:49,904 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:49,904 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657259317]
[2019-11-06 19:00:49,904 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:49,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:50,135 WARN  L191               SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:50,138 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:50,229 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:50,265 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:50,436 INFO  L134       CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-06 19:00:50,437 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657259317]
[2019-11-06 19:00:50,437 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57943019]
[2019-11-06 19:00:50,437 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
[2019-11-06 19:00:50,671 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:50,674 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-11-06 19:00:50,679 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:00:50,704 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:00:50,754 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:00:50,803 INFO  L134       CoverageAnalysis]: Checked inductivity of 123 backedges. 98 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2019-11-06 19:00:50,804 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:00:50,804 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2019-11-06 19:00:50,804 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087631694]
[2019-11-06 19:00:50,804 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-06 19:00:50,805 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:50,805 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-06 19:00:50,805 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2019-11-06 19:00:50,805 INFO  L87              Difference]: Start difference. First operand 9491 states and 12126 transitions. Second operand 6 states.