/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_label24.c


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This is Ultimate 0.1.24-fb55353
[2019-11-06 19:00:23,304 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-06 19:00:23,382 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 19:00:23,398 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 19:00:23,398 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 19:00:23,399 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 19:00:23,400 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 19:00:23,400 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 19:00:23,400 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 19:00:23,400 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 19:00:23,400 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 19:00:23,401 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 19:00:23,401 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 19:00:23,401 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 19:00:23,401 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 19:00:23,401 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 19:00:23,402 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 19:00:23,402 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 19:00:23,402 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 19:00:23,402 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 19:00:23,402 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 19:00:23,402 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 19:00:23,403 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 19:00:23,403 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 19:00:23,403 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:00:23,403 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 19:00:23,403 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 19:00:23,404 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 19:00:23,404 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 19:00:23,404 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 19:00:23,404 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 19:00:23,404 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 19:00:23,675 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 19:00:23,687 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 19:00:23,690 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 19:00:23,692 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 19:00:23,692 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 19:00:23,693 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label24.c
[2019-11-06 19:00:23,756 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/984d9d1b7/a82b0c3760874b19ac116aca20b1f066/FLAGf48e90fa4
[2019-11-06 19:00:24,422 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 19:00:24,422 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label24.c
[2019-11-06 19:00:24,443 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/984d9d1b7/a82b0c3760874b19ac116aca20b1f066/FLAGf48e90fa4
[2019-11-06 19:00:24,595 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/984d9d1b7/a82b0c3760874b19ac116aca20b1f066
[2019-11-06 19:00:24,605 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 19:00:24,607 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 19:00:24,608 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 19:00:24,608 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 19:00:24,614 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 19:00:24,615 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:00:24" (1/1) ...
[2019-11-06 19:00:24,618 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56d482f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:24, skipping insertion in model container
[2019-11-06 19:00:24,618 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:00:24" (1/1) ...
[2019-11-06 19:00:24,629 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 19:00:24,713 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 19:00:25,477 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:00:25,484 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 19:00:25,948 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:00:25,980 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 19:00:25,981 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:25 WrapperNode
[2019-11-06 19:00:25,981 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 19:00:25,982 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 19:00:25,983 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 19:00:25,983 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 19:00:25,999 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:25" (1/1) ...
[2019-11-06 19:00:25,999 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:25" (1/1) ...
[2019-11-06 19:00:26,051 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:25" (1/1) ...
[2019-11-06 19:00:26,051 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:25" (1/1) ...
[2019-11-06 19:00:26,132 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:25" (1/1) ...
[2019-11-06 19:00:26,164 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:25" (1/1) ...
[2019-11-06 19:00:26,175 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:25" (1/1) ...
[2019-11-06 19:00:26,184 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 19:00:26,185 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 19:00:26,185 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 19:00:26,185 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 19:00:26,186 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:25" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:00:26,253 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 19:00:26,253 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 19:00:26,254 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-11-06 19:00:26,254 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 19:00:26,254 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-11-06 19:00:26,254 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 19:00:26,254 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-06 19:00:26,255 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-11-06 19:00:26,255 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 19:00:26,255 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 19:00:26,255 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 19:00:28,459 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 19:00:28,459 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-11-06 19:00:28,463 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:00:28 BoogieIcfgContainer
[2019-11-06 19:00:28,463 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 19:00:28,465 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 19:00:28,466 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 19:00:28,472 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 19:00:28,472 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:00:24" (1/3) ...
[2019-11-06 19:00:28,473 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69610637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:00:28, skipping insertion in model container
[2019-11-06 19:00:28,474 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:00:25" (2/3) ...
[2019-11-06 19:00:28,475 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69610637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:00:28, skipping insertion in model container
[2019-11-06 19:00:28,475 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:00:28" (3/3) ...
[2019-11-06 19:00:28,487 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem03_label24.c
[2019-11-06 19:00:28,502 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 19:00:28,514 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 19:00:28,527 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 19:00:28,557 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 19:00:28,557 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 19:00:28,558 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 19:00:28,558 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 19:00:28,558 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 19:00:28,558 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 19:00:28,558 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 19:00:28,559 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 19:00:28,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states.
[2019-11-06 19:00:28,603 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 198
[2019-11-06 19:00:28,603 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:28,605 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, 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 19:00:28,607 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:28,614 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:28,615 INFO  L82        PathProgramCache]: Analyzing trace with hash -1879577704, now seen corresponding path program 1 times
[2019-11-06 19:00:28,626 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:28,626 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238793151]
[2019-11-06 19:00:28,627 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:28,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:29,589 WARN  L191               SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:29,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:29,695 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 19:00:29,695 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238793151]
[2019-11-06 19:00:29,696 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:00:29,696 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 19:00:29,698 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282689111]
[2019-11-06 19:00:29,703 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:00:29,704 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:29,743 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:00:29,745 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:00:29,747 INFO  L87              Difference]: Start difference. First operand 311 states. Second operand 5 states.
[2019-11-06 19:00:29,949 WARN  L191               SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:00:30,502 WARN  L191               SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2019-11-06 19:00:34,272 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:34,272 INFO  L93              Difference]: Finished difference Result 1111 states and 1980 transitions.
[2019-11-06 19:00:34,273 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:00:34,274 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 197
[2019-11-06 19:00:34,275 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:34,296 INFO  L225             Difference]: With dead ends: 1111
[2019-11-06 19:00:34,296 INFO  L226             Difference]: Without dead ends: 703
[2019-11-06 19:00:34,306 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 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 19:00:34,330 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 703 states.
[2019-11-06 19:00:34,428 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 467.
[2019-11-06 19:00:34,429 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 467 states.
[2019-11-06 19:00:34,432 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 718 transitions.
[2019-11-06 19:00:34,434 INFO  L78                 Accepts]: Start accepts. Automaton has 467 states and 718 transitions. Word has length 197
[2019-11-06 19:00:34,435 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:34,435 INFO  L462      AbstractCegarLoop]: Abstraction has 467 states and 718 transitions.
[2019-11-06 19:00:34,436 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:00:34,436 INFO  L276                IsEmpty]: Start isEmpty. Operand 467 states and 718 transitions.
[2019-11-06 19:00:34,442 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 210
[2019-11-06 19:00:34,442 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:34,443 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, 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 19:00:34,445 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:34,445 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:34,446 INFO  L82        PathProgramCache]: Analyzing trace with hash 380333484, now seen corresponding path program 1 times
[2019-11-06 19:00:34,446 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:34,446 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47498451]
[2019-11-06 19:00:34,446 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:34,534 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:34,812 WARN  L191               SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:34,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:34,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:35,038 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 19:00:35,039 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47498451]
[2019-11-06 19:00:35,039 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160361474]
[2019-11-06 19:00:35,039 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 19:00:35,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:35,242 INFO  L256         TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-11-06 19:00:35,257 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:00:35,342 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 19:00:35,343 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:00:35,343 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8
[2019-11-06 19:00:35,344 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443387525]
[2019-11-06 19:00:35,346 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:00:35,346 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:35,346 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:00:35,347 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2019-11-06 19:00:35,347 INFO  L87              Difference]: Start difference. First operand 467 states and 718 transitions. Second operand 5 states.
[2019-11-06 19:00:36,963 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:36,965 INFO  L93              Difference]: Finished difference Result 1401 states and 2184 transitions.
[2019-11-06 19:00:36,965 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:00:36,966 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 209
[2019-11-06 19:00:36,966 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:36,976 INFO  L225             Difference]: With dead ends: 1401
[2019-11-06 19:00:36,976 INFO  L226             Difference]: Without dead ends: 940
[2019-11-06 19:00:36,980 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2019-11-06 19:00:36,982 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 940 states.
[2019-11-06 19:00:37,050 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 924.
[2019-11-06 19:00:37,051 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 924 states.
[2019-11-06 19:00:37,056 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1410 transitions.
[2019-11-06 19:00:37,056 INFO  L78                 Accepts]: Start accepts. Automaton has 924 states and 1410 transitions. Word has length 209
[2019-11-06 19:00:37,058 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:37,059 INFO  L462      AbstractCegarLoop]: Abstraction has 924 states and 1410 transitions.
[2019-11-06 19:00:37,059 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:00:37,060 INFO  L276                IsEmpty]: Start isEmpty. Operand 924 states and 1410 transitions.
[2019-11-06 19:00:37,069 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2019-11-06 19:00:37,070 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:37,071 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:00:37,277 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:37,277 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:37,278 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:37,278 INFO  L82        PathProgramCache]: Analyzing trace with hash -2072803421, now seen corresponding path program 1 times
[2019-11-06 19:00:37,278 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:37,280 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887351261]
[2019-11-06 19:00:37,280 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:37,321 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:37,540 WARN  L191               SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:37,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:37,682 WARN  L191               SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2019-11-06 19:00:37,689 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:37,800 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:00:37,801 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887351261]
[2019-11-06 19:00:37,801 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:00:37,803 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-06 19:00:37,803 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917955593]
[2019-11-06 19:00:37,804 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 19:00:37,813 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:37,813 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 19:00:37,814 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:00:37,814 INFO  L87              Difference]: Start difference. First operand 924 states and 1410 transitions. Second operand 9 states.
[2019-11-06 19:00:38,055 WARN  L191               SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:00:38,472 WARN  L191               SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:00:38,894 WARN  L191               SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2019-11-06 19:00:42,501 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:42,501 INFO  L93              Difference]: Finished difference Result 3638 states and 5797 transitions.
[2019-11-06 19:00:42,502 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-11-06 19:00:42,502 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 210
[2019-11-06 19:00:42,503 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:42,521 INFO  L225             Difference]: With dead ends: 3638
[2019-11-06 19:00:42,521 INFO  L226             Difference]: Without dead ends: 2720
[2019-11-06 19:00:42,525 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240
[2019-11-06 19:00:42,529 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2720 states.
[2019-11-06 19:00:42,628 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2720 to 2680.
[2019-11-06 19:00:42,628 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2680 states.
[2019-11-06 19:00:42,638 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2680 states to 2680 states and 3915 transitions.
[2019-11-06 19:00:42,638 INFO  L78                 Accepts]: Start accepts. Automaton has 2680 states and 3915 transitions. Word has length 210
[2019-11-06 19:00:42,639 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:42,639 INFO  L462      AbstractCegarLoop]: Abstraction has 2680 states and 3915 transitions.
[2019-11-06 19:00:42,639 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-06 19:00:42,639 INFO  L276                IsEmpty]: Start isEmpty. Operand 2680 states and 3915 transitions.
[2019-11-06 19:00:42,647 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 212
[2019-11-06 19:00:42,648 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:42,648 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:00:42,648 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:42,649 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:42,649 INFO  L82        PathProgramCache]: Analyzing trace with hash -1077912688, now seen corresponding path program 1 times
[2019-11-06 19:00:42,649 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:42,650 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778824967]
[2019-11-06 19:00:42,650 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:42,700 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:42,946 WARN  L191               SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:42,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:43,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:43,161 INFO  L134       CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:00:43,162 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778824967]
[2019-11-06 19:00:43,162 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171980488]
[2019-11-06 19:00:43,162 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 19:00:43,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:43,428 INFO  L256         TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-11-06 19:00:43,437 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:00:43,586 INFO  L134       CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:00:43,587 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:00:43,587 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5
[2019-11-06 19:00:43,587 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554063417]
[2019-11-06 19:00:43,588 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:00:43,588 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:43,588 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:00:43,589 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:00:43,589 INFO  L87              Difference]: Start difference. First operand 2680 states and 3915 transitions. Second operand 3 states.
[2019-11-06 19:00:44,613 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:44,613 INFO  L93              Difference]: Finished difference Result 7946 states and 11955 transitions.
[2019-11-06 19:00:44,618 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-06 19:00:44,618 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 211
[2019-11-06 19:00:44,622 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:44,649 INFO  L225             Difference]: With dead ends: 7946
[2019-11-06 19:00:44,650 INFO  L226             Difference]: Without dead ends: 5272
[2019-11-06 19:00:44,658 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:00:44,665 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5272 states.
[2019-11-06 19:00:44,805 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5272 to 5234.
[2019-11-06 19:00:44,805 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5234 states.
[2019-11-06 19:00:44,824 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 7689 transitions.
[2019-11-06 19:00:44,824 INFO  L78                 Accepts]: Start accepts. Automaton has 5234 states and 7689 transitions. Word has length 211
[2019-11-06 19:00:44,825 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:44,826 INFO  L462      AbstractCegarLoop]: Abstraction has 5234 states and 7689 transitions.
[2019-11-06 19:00:44,826 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-06 19:00:44,826 INFO  L276                IsEmpty]: Start isEmpty. Operand 5234 states and 7689 transitions.
[2019-11-06 19:00:44,842 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 236
[2019-11-06 19:00:44,843 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:44,843 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:00:45,055 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:45,056 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:45,056 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:45,056 INFO  L82        PathProgramCache]: Analyzing trace with hash 2120184752, now seen corresponding path program 1 times
[2019-11-06 19:00:45,057 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:45,057 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434017941]
[2019-11-06 19:00:45,057 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:45,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:45,272 WARN  L191               SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:45,275 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:45,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:45,383 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:45,517 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-06 19:00:45,518 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434017941]
[2019-11-06 19:00:45,518 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672117064]
[2019-11-06 19:00:45,518 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 19:00:45,738 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:45,740 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1053 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-11-06 19:00:45,747 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:00:45,853 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2019-11-06 19:00:45,853 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:00:45,854 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9
[2019-11-06 19:00:45,854 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803570447]
[2019-11-06 19:00:45,854 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:00:45,855 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:45,855 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:00:45,855 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:00:45,855 INFO  L87              Difference]: Start difference. First operand 5234 states and 7689 transitions. Second operand 3 states.
[2019-11-06 19:00:46,989 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:46,989 INFO  L93              Difference]: Finished difference Result 10464 states and 15398 transitions.
[2019-11-06 19:00:46,990 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-06 19:00:46,990 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 235
[2019-11-06 19:00:46,990 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:47,014 INFO  L225             Difference]: With dead ends: 10464
[2019-11-06 19:00:47,015 INFO  L226             Difference]: Without dead ends: 5236
[2019-11-06 19:00:47,029 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 239 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 19:00:47,037 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5236 states.
[2019-11-06 19:00:47,228 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5236 to 5234.
[2019-11-06 19:00:47,228 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5234 states.
[2019-11-06 19:00:47,240 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5234 states to 5234 states and 7483 transitions.
[2019-11-06 19:00:47,241 INFO  L78                 Accepts]: Start accepts. Automaton has 5234 states and 7483 transitions. Word has length 235
[2019-11-06 19:00:47,242 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:47,248 INFO  L462      AbstractCegarLoop]: Abstraction has 5234 states and 7483 transitions.
[2019-11-06 19:00:47,248 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-06 19:00:47,249 INFO  L276                IsEmpty]: Start isEmpty. Operand 5234 states and 7483 transitions.
[2019-11-06 19:00:47,273 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 262
[2019-11-06 19:00:47,273 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:47,274 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, 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:00:47,479 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:47,480 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:47,480 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:47,480 INFO  L82        PathProgramCache]: Analyzing trace with hash -1677850078, now seen corresponding path program 1 times
[2019-11-06 19:00:47,480 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:47,481 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38439165]
[2019-11-06 19:00:47,483 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:47,542 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:47,726 WARN  L191               SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:47,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:47,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:47,828 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:47,999 INFO  L134       CoverageAnalysis]: Checked inductivity of 77 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-06 19:00:47,999 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38439165]
[2019-11-06 19:00:48,000 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869361540]
[2019-11-06 19:00:48,000 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 19:00:48,283 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:48,287 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1079 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-11-06 19:00:48,295 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:00:48,349 INFO  L134       CoverageAnalysis]: Checked inductivity of 77 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:00:48,349 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:00:48,349 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 8
[2019-11-06 19:00:48,350 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542255595]
[2019-11-06 19:00:48,351 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-11-06 19:00:48,351 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:48,351 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-11-06 19:00:48,351 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56
[2019-11-06 19:00:48,351 INFO  L87              Difference]: Start difference. First operand 5234 states and 7483 transitions. Second operand 8 states.
[2019-11-06 19:00:48,685 WARN  L191               SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:00:49,085 WARN  L191               SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2019-11-06 19:00:53,620 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:53,621 INFO  L93              Difference]: Finished difference Result 13355 states and 20128 transitions.
[2019-11-06 19:00:53,621 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-11-06 19:00:53,621 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 261
[2019-11-06 19:00:53,622 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:53,660 INFO  L225             Difference]: With dead ends: 13355
[2019-11-06 19:00:53,661 INFO  L226             Difference]: Without dead ends: 8127
[2019-11-06 19:00:53,676 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156
[2019-11-06 19:00:53,686 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8127 states.
[2019-11-06 19:00:53,935 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8127 to 8025.
[2019-11-06 19:00:53,935 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8025 states.
[2019-11-06 19:00:53,957 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8025 states to 8025 states and 11366 transitions.
[2019-11-06 19:00:53,957 INFO  L78                 Accepts]: Start accepts. Automaton has 8025 states and 11366 transitions. Word has length 261
[2019-11-06 19:00:53,957 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:53,957 INFO  L462      AbstractCegarLoop]: Abstraction has 8025 states and 11366 transitions.
[2019-11-06 19:00:53,958 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-11-06 19:00:53,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 8025 states and 11366 transitions.
[2019-11-06 19:00:53,989 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 268
[2019-11-06 19:00:53,990 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:53,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:00:54,204 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:54,204 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:54,205 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:54,205 INFO  L82        PathProgramCache]: Analyzing trace with hash -584902122, now seen corresponding path program 1 times
[2019-11-06 19:00:54,205 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:54,205 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368630834]
[2019-11-06 19:00:54,205 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:54,247 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:54,416 WARN  L191               SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:54,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:54,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:54,653 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:54,721 INFO  L134       CoverageAnalysis]: Checked inductivity of 89 backedges. 62 proven. 22 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-11-06 19:00:54,722 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368630834]
[2019-11-06 19:00:54,722 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590261185]
[2019-11-06 19:00:54,722 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 19:00:54,932 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:54,935 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1082 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-11-06 19:00:54,940 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:00:55,016 INFO  L134       CoverageAnalysis]: Checked inductivity of 89 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2019-11-06 19:00:55,016 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:00:55,016 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-11-06 19:00:55,017 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146401270]
[2019-11-06 19:00:55,018 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:00:55,018 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:55,018 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:00:55,019 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-11-06 19:00:55,019 INFO  L87              Difference]: Start difference. First operand 8025 states and 11366 transitions. Second operand 5 states.
[2019-11-06 19:00:56,918 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:00:56,919 INFO  L93              Difference]: Finished difference Result 22511 states and 34173 transitions.
[2019-11-06 19:00:56,919 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:00:56,919 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 267
[2019-11-06 19:00:56,920 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:00:56,985 INFO  L225             Difference]: With dead ends: 22511
[2019-11-06 19:00:56,985 INFO  L226             Difference]: Without dead ends: 14500
[2019-11-06 19:00:57,011 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2019-11-06 19:00:57,027 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14500 states.
[2019-11-06 19:00:57,372 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14500 to 14334.
[2019-11-06 19:00:57,373 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14334 states.
[2019-11-06 19:00:57,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14334 states to 14334 states and 19354 transitions.
[2019-11-06 19:00:57,414 INFO  L78                 Accepts]: Start accepts. Automaton has 14334 states and 19354 transitions. Word has length 267
[2019-11-06 19:00:57,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:00:57,418 INFO  L462      AbstractCegarLoop]: Abstraction has 14334 states and 19354 transitions.
[2019-11-06 19:00:57,418 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:00:57,418 INFO  L276                IsEmpty]: Start isEmpty. Operand 14334 states and 19354 transitions.
[2019-11-06 19:00:57,488 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 273
[2019-11-06 19:00:57,488 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:00:57,489 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, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:00:57,701 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:00:57,702 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:00:57,702 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:00:57,702 INFO  L82        PathProgramCache]: Analyzing trace with hash -264641318, now seen corresponding path program 1 times
[2019-11-06 19:00:57,702 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:00:57,703 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438628865]
[2019-11-06 19:00:57,703 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:00:57,753 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:57,993 WARN  L191               SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:00:57,997 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:58,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:58,160 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:58,304 INFO  L134       CoverageAnalysis]: Checked inductivity of 99 backedges. 68 proven. 30 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-06 19:00:58,305 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438628865]
[2019-11-06 19:00:58,305 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449105165]
[2019-11-06 19:00:58,305 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 19:00:58,523 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:00:58,527 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 8 conjunts are in the unsatisfiable core
[2019-11-06 19:00:58,533 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:00:58,703 WARN  L191               SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 6
[2019-11-06 19:00:58,751 INFO  L134       CoverageAnalysis]: Checked inductivity of 99 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked.
[2019-11-06 19:00:58,751 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:00:58,752 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 16
[2019-11-06 19:00:58,752 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481384381]
[2019-11-06 19:00:58,752 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:00:58,752 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:00:58,753 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:00:58,753 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240
[2019-11-06 19:00:58,753 INFO  L87              Difference]: Start difference. First operand 14334 states and 19354 transitions. Second operand 5 states.