/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_label38.c


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This is Ultimate 0.1.24-fb55353
[2019-11-06 19:01:00,502 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-11-06 19:01:00,590 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 19:01:00,620 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-06 19:01:00,620 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-06 19:01:00,621 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-06 19:01:00,622 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-06 19:01:00,622 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-06 19:01:00,622 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-06 19:01:00,622 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-06 19:01:00,622 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-06 19:01:00,623 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-06 19:01:00,623 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-06 19:01:00,623 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-06 19:01:00,623 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-06 19:01:00,623 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-06 19:01:00,624 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-06 19:01:00,624 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-06 19:01:00,624 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-06 19:01:00,624 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-06 19:01:00,624 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-06 19:01:00,625 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-06 19:01:00,625 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-06 19:01:00,625 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-06 19:01:00,625 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-06 19:01:00,625 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-06 19:01:00,626 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-06 19:01:00,626 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-06 19:01:00,626 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-06 19:01:00,626 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-06 19:01:00,626 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-06 19:01:00,627 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-06 19:01:00,889 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-06 19:01:00,905 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-06 19:01:00,909 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-06 19:01:00,911 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-06 19:01:00,911 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-06 19:01:00,912 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label38.c
[2019-11-06 19:01:00,973 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80a22d7c1/dc4511101ef4453bb8203fe4ad380191/FLAGc2d40b4e6
[2019-11-06 19:01:01,607 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-06 19:01:01,607 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label38.c
[2019-11-06 19:01:01,628 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80a22d7c1/dc4511101ef4453bb8203fe4ad380191/FLAGc2d40b4e6
[2019-11-06 19:01:01,810 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80a22d7c1/dc4511101ef4453bb8203fe4ad380191
[2019-11-06 19:01:01,821 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-06 19:01:01,822 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-06 19:01:01,824 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-06 19:01:01,824 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-06 19:01:01,828 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-06 19:01:01,829 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:01:01" (1/1) ...
[2019-11-06 19:01:01,832 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63f03f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:01, skipping insertion in model container
[2019-11-06 19:01:01,832 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:01:01" (1/1) ...
[2019-11-06 19:01:01,841 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-06 19:01:01,912 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-06 19:01:02,788 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:01:02,804 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-06 19:01:03,265 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-06 19:01:03,291 INFO  L192         MainTranslator]: Completed translation
[2019-11-06 19:01:03,292 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03 WrapperNode
[2019-11-06 19:01:03,292 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-06 19:01:03,293 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-06 19:01:03,294 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-06 19:01:03,294 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-06 19:01:03,313 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ...
[2019-11-06 19:01:03,314 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ...
[2019-11-06 19:01:03,370 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ...
[2019-11-06 19:01:03,371 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ...
[2019-11-06 19:01:03,427 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ...
[2019-11-06 19:01:03,440 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ...
[2019-11-06 19:01:03,461 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (1/1) ...
[2019-11-06 19:01:03,476 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-06 19:01:03,477 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-06 19:01:03,477 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-06 19:01:03,477 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-06 19:01:03,478 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (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 19:01:03,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-06 19:01:03,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-06 19:01:03,545 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-11-06 19:01:03,546 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-06 19:01:03,546 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-11-06 19:01:03,547 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-06 19:01:03,547 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-06 19:01:03,547 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-11-06 19:01:03,548 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-06 19:01:03,548 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-06 19:01:03,548 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-06 19:01:05,491 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-06 19:01:05,492 INFO  L284             CfgBuilder]: Removed 1 assume(true) statements.
[2019-11-06 19:01:05,493 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:01:05 BoogieIcfgContainer
[2019-11-06 19:01:05,494 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-06 19:01:05,495 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-06 19:01:05,495 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-06 19:01:05,501 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-06 19:01:05,501 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:01:01" (1/3) ...
[2019-11-06 19:01:05,503 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc1357d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:01:05, skipping insertion in model container
[2019-11-06 19:01:05,503 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:01:03" (2/3) ...
[2019-11-06 19:01:05,504 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc1357d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:01:05, skipping insertion in model container
[2019-11-06 19:01:05,504 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:01:05" (3/3) ...
[2019-11-06 19:01:05,511 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem03_label38.c
[2019-11-06 19:01:05,526 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-06 19:01:05,538 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-06 19:01:05,551 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-06 19:01:05,600 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-06 19:01:05,600 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-06 19:01:05,600 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-06 19:01:05,600 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-06 19:01:05,600 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-06 19:01:05,600 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-06 19:01:05,601 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-06 19:01:05,601 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-06 19:01:05,642 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states.
[2019-11-06 19:01:05,677 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 208
[2019-11-06 19:01:05,678 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:05,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:01:05,685 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:05,692 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:05,693 INFO  L82        PathProgramCache]: Analyzing trace with hash -2093619232, now seen corresponding path program 1 times
[2019-11-06 19:01:05,702 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:05,703 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801733043]
[2019-11-06 19:01:05,703 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:06,167 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:06,738 WARN  L191               SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:06,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:06,906 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 19:01:06,907 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801733043]
[2019-11-06 19:01:06,908 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:01:06,908 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-06 19:01:06,910 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970974887]
[2019-11-06 19:01:06,916 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:01:06,916 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:06,930 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:01:06,931 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:01:06,933 INFO  L87              Difference]: Start difference. First operand 311 states. Second operand 5 states.
[2019-11-06 19:01:07,146 WARN  L191               SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:01:07,624 WARN  L191               SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2019-11-06 19:01:11,423 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:01:11,424 INFO  L93              Difference]: Finished difference Result 1107 states and 1968 transitions.
[2019-11-06 19:01:11,424 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:01:11,425 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 207
[2019-11-06 19:01:11,427 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:01:11,451 INFO  L225             Difference]: With dead ends: 1107
[2019-11-06 19:01:11,452 INFO  L226             Difference]: Without dead ends: 699
[2019-11-06 19:01:11,460 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 19:01:11,481 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 699 states.
[2019-11-06 19:01:11,554 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 474.
[2019-11-06 19:01:11,556 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 474 states.
[2019-11-06 19:01:11,558 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 720 transitions.
[2019-11-06 19:01:11,561 INFO  L78                 Accepts]: Start accepts. Automaton has 474 states and 720 transitions. Word has length 207
[2019-11-06 19:01:11,566 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:01:11,566 INFO  L462      AbstractCegarLoop]: Abstraction has 474 states and 720 transitions.
[2019-11-06 19:01:11,566 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:01:11,567 INFO  L276                IsEmpty]: Start isEmpty. Operand 474 states and 720 transitions.
[2019-11-06 19:01:11,576 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 220
[2019-11-06 19:01:11,576 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:11,577 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:01:11,579 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:11,579 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:11,580 INFO  L82        PathProgramCache]: Analyzing trace with hash 1254940916, now seen corresponding path program 1 times
[2019-11-06 19:01:11,580 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:11,580 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021175928]
[2019-11-06 19:01:11,580 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:11,649 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:11,949 WARN  L191               SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:11,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:12,035 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:12,149 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 19:01:12,149 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021175928]
[2019-11-06 19:01:12,150 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1807318360]
[2019-11-06 19:01:12,150 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 19:01:12,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:12,465 INFO  L256         TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-11-06 19:01:12,481 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:01:12,660 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 19:01:12,661 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:01:12,661 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6
[2019-11-06 19:01:12,666 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940101035]
[2019-11-06 19:01:12,670 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:01:12,670 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:12,671 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:01:12,671 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2019-11-06 19:01:12,671 INFO  L87              Difference]: Start difference. First operand 474 states and 720 transitions. Second operand 3 states.
[2019-11-06 19:01:13,773 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:01:13,773 INFO  L93              Difference]: Finished difference Result 1364 states and 2099 transitions.
[2019-11-06 19:01:13,774 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-06 19:01:13,774 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 219
[2019-11-06 19:01:13,775 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:01:13,780 INFO  L225             Difference]: With dead ends: 1364
[2019-11-06 19:01:13,780 INFO  L226             Difference]: Without dead ends: 896
[2019-11-06 19:01:13,782 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2019-11-06 19:01:13,784 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 896 states.
[2019-11-06 19:01:13,818 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 894.
[2019-11-06 19:01:13,818 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 894 states.
[2019-11-06 19:01:13,822 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 894 states to 894 states and 1212 transitions.
[2019-11-06 19:01:13,823 INFO  L78                 Accepts]: Start accepts. Automaton has 894 states and 1212 transitions. Word has length 219
[2019-11-06 19:01:13,823 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:01:13,824 INFO  L462      AbstractCegarLoop]: Abstraction has 894 states and 1212 transitions.
[2019-11-06 19:01:13,824 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-06 19:01:13,824 INFO  L276                IsEmpty]: Start isEmpty. Operand 894 states and 1212 transitions.
[2019-11-06 19:01:13,828 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 235
[2019-11-06 19:01:13,829 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:13,829 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:14,039 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:01:14,040 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:14,040 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:14,040 INFO  L82        PathProgramCache]: Analyzing trace with hash 536359495, now seen corresponding path program 1 times
[2019-11-06 19:01:14,041 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:14,041 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640742795]
[2019-11-06 19:01:14,042 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:14,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:14,326 WARN  L191               SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:14,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:14,488 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:14,699 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 19:01:14,700 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640742795]
[2019-11-06 19:01:14,701 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:01:14,701 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-06 19:01:14,702 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723866049]
[2019-11-06 19:01:14,703 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-11-06 19:01:14,703 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:14,711 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-11-06 19:01:14,712 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:01:14,712 INFO  L87              Difference]: Start difference. First operand 894 states and 1212 transitions. Second operand 9 states.
[2019-11-06 19:01:14,879 WARN  L191               SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:01:15,398 WARN  L191               SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:01:18,229 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:01:18,229 INFO  L93              Difference]: Finished difference Result 2246 states and 3211 transitions.
[2019-11-06 19:01:18,234 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2019-11-06 19:01:18,234 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 234
[2019-11-06 19:01:18,234 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:01:18,243 INFO  L225             Difference]: With dead ends: 2246
[2019-11-06 19:01:18,243 INFO  L226             Difference]: Without dead ends: 1358
[2019-11-06 19:01:18,246 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182
[2019-11-06 19:01:18,248 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1358 states.
[2019-11-06 19:01:18,287 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1358 to 1332.
[2019-11-06 19:01:18,287 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1332 states.
[2019-11-06 19:01:18,293 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1777 transitions.
[2019-11-06 19:01:18,293 INFO  L78                 Accepts]: Start accepts. Automaton has 1332 states and 1777 transitions. Word has length 234
[2019-11-06 19:01:18,294 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:01:18,294 INFO  L462      AbstractCegarLoop]: Abstraction has 1332 states and 1777 transitions.
[2019-11-06 19:01:18,294 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-11-06 19:01:18,294 INFO  L276                IsEmpty]: Start isEmpty. Operand 1332 states and 1777 transitions.
[2019-11-06 19:01:18,299 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 242
[2019-11-06 19:01:18,299 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:18,300 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, 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]
[2019-11-06 19:01:18,300 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:18,300 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:18,301 INFO  L82        PathProgramCache]: Analyzing trace with hash -1119665401, now seen corresponding path program 1 times
[2019-11-06 19:01:18,301 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:18,301 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787615602]
[2019-11-06 19:01:18,301 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:18,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:18,543 WARN  L191               SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:18,550 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:18,725 WARN  L191               SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2019-11-06 19:01:18,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:18,934 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:01:18,934 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787615602]
[2019-11-06 19:01:18,934 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-06 19:01:18,935 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-11-06 19:01:18,937 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961867053]
[2019-11-06 19:01:18,938 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-11-06 19:01:18,938 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:18,938 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-11-06 19:01:18,939 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56
[2019-11-06 19:01:18,939 INFO  L87              Difference]: Start difference. First operand 1332 states and 1777 transitions. Second operand 8 states.
[2019-11-06 19:01:19,090 WARN  L191               SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:01:19,606 WARN  L191               SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 128
[2019-11-06 19:01:22,596 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:01:22,596 INFO  L93              Difference]: Finished difference Result 4018 states and 5650 transitions.
[2019-11-06 19:01:22,601 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-11-06 19:01:22,601 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 241
[2019-11-06 19:01:22,601 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:01:22,619 INFO  L225             Difference]: With dead ends: 4018
[2019-11-06 19:01:22,619 INFO  L226             Difference]: Without dead ends: 2692
[2019-11-06 19:01:22,624 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2019-11-06 19:01:22,627 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2692 states.
[2019-11-06 19:01:22,725 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2654.
[2019-11-06 19:01:22,725 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2654 states.
[2019-11-06 19:01:22,739 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3619 transitions.
[2019-11-06 19:01:22,740 INFO  L78                 Accepts]: Start accepts. Automaton has 2654 states and 3619 transitions. Word has length 241
[2019-11-06 19:01:22,740 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:01:22,740 INFO  L462      AbstractCegarLoop]: Abstraction has 2654 states and 3619 transitions.
[2019-11-06 19:01:22,740 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-11-06 19:01:22,740 INFO  L276                IsEmpty]: Start isEmpty. Operand 2654 states and 3619 transitions.
[2019-11-06 19:01:22,751 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 244
[2019-11-06 19:01:22,751 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:22,753 INFO  L410         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:22,753 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:22,753 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:22,754 INFO  L82        PathProgramCache]: Analyzing trace with hash -850359650, now seen corresponding path program 1 times
[2019-11-06 19:01:22,754 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:22,754 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291505457]
[2019-11-06 19:01:22,754 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:22,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:22,998 WARN  L191               SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:23,001 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:23,127 WARN  L191               SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88
[2019-11-06 19:01:23,132 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:23,144 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:23,269 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-11-06 19:01:23,270 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291505457]
[2019-11-06 19:01:23,270 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425807762]
[2019-11-06 19:01:23,270 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 19:01:23,487 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:23,489 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-11-06 19:01:23,498 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:01:23,574 INFO  L134       CoverageAnalysis]: Checked inductivity of 40 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2019-11-06 19:01:23,574 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:01:23,575 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9
[2019-11-06 19:01:23,575 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948031926]
[2019-11-06 19:01:23,576 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:01:23,576 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:23,576 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:01:23,576 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-11-06 19:01:23,577 INFO  L87              Difference]: Start difference. First operand 2654 states and 3619 transitions. Second operand 3 states.
[2019-11-06 19:01:24,542 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:01:24,543 INFO  L93              Difference]: Finished difference Result 5304 states and 7251 transitions.
[2019-11-06 19:01:24,544 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-06 19:01:24,544 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 243
[2019-11-06 19:01:24,545 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:01:24,558 INFO  L225             Difference]: With dead ends: 5304
[2019-11-06 19:01:24,558 INFO  L226             Difference]: Without dead ends: 2656
[2019-11-06 19:01:24,566 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 247 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 19:01:24,612 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2656 states.
[2019-11-06 19:01:24,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2656 to 2654.
[2019-11-06 19:01:24,669 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2654 states.
[2019-11-06 19:01:24,678 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3493 transitions.
[2019-11-06 19:01:24,678 INFO  L78                 Accepts]: Start accepts. Automaton has 2654 states and 3493 transitions. Word has length 243
[2019-11-06 19:01:24,679 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:01:24,679 INFO  L462      AbstractCegarLoop]: Abstraction has 2654 states and 3493 transitions.
[2019-11-06 19:01:24,679 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-06 19:01:24,679 INFO  L276                IsEmpty]: Start isEmpty. Operand 2654 states and 3493 transitions.
[2019-11-06 19:01:24,689 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 253
[2019-11-06 19:01:24,689 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:24,690 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, 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, 1, 1, 1, 1, 1, 1]
[2019-11-06 19:01:24,893 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:01:24,894 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:24,894 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:24,894 INFO  L82        PathProgramCache]: Analyzing trace with hash 476797618, now seen corresponding path program 1 times
[2019-11-06 19:01:24,894 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:24,895 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821802146]
[2019-11-06 19:01:24,895 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:24,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:25,236 WARN  L191               SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:25,239 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:25,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:25,413 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:01:25,413 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821802146]
[2019-11-06 19:01:25,413 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279457656]
[2019-11-06 19:01:25,414 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 19:01:25,614 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:25,616 INFO  L256         TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-11-06 19:01:25,622 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:01:25,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-06 19:01:25,687 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:01:25,687 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5
[2019-11-06 19:01:25,687 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082230223]
[2019-11-06 19:01:25,688 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-06 19:01:25,688 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:25,688 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-06 19:01:25,689 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-06 19:01:25,689 INFO  L87              Difference]: Start difference. First operand 2654 states and 3493 transitions. Second operand 3 states.
[2019-11-06 19:01:26,794 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:01:26,794 INFO  L93              Difference]: Finished difference Result 7854 states and 10598 transitions.
[2019-11-06 19:01:26,798 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-06 19:01:26,798 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 252
[2019-11-06 19:01:26,799 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:01:26,824 INFO  L225             Difference]: With dead ends: 7854
[2019-11-06 19:01:26,824 INFO  L226             Difference]: Without dead ends: 5206
[2019-11-06 19:01:26,833 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 258 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 19:01:26,839 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5206 states.
[2019-11-06 19:01:26,952 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 5200.
[2019-11-06 19:01:26,952 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5200 states.
[2019-11-06 19:01:26,963 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5200 states to 5200 states and 6852 transitions.
[2019-11-06 19:01:26,963 INFO  L78                 Accepts]: Start accepts. Automaton has 5200 states and 6852 transitions. Word has length 252
[2019-11-06 19:01:26,964 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:01:26,964 INFO  L462      AbstractCegarLoop]: Abstraction has 5200 states and 6852 transitions.
[2019-11-06 19:01:26,964 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-06 19:01:26,964 INFO  L276                IsEmpty]: Start isEmpty. Operand 5200 states and 6852 transitions.
[2019-11-06 19:01:26,984 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 259
[2019-11-06 19:01:26,984 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:26,984 INFO  L410         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:27,189 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:01:27,189 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:27,190 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:27,190 INFO  L82        PathProgramCache]: Analyzing trace with hash -944811427, now seen corresponding path program 1 times
[2019-11-06 19:01:27,190 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:27,190 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414241749]
[2019-11-06 19:01:27,190 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:27,232 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:27,415 WARN  L191               SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:27,421 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:27,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:27,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:27,672 INFO  L134       CoverageAnalysis]: Checked inductivity of 65 backedges. 43 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2019-11-06 19:01:27,672 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414241749]
[2019-11-06 19:01:27,673 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286621992]
[2019-11-06 19:01:27,673 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 19:01:27,900 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:27,904 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 6 conjunts are in the unsatisfiable core
[2019-11-06 19:01:27,910 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:01:28,041 INFO  L134       CoverageAnalysis]: Checked inductivity of 65 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2019-11-06 19:01:28,041 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:01:28,041 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11
[2019-11-06 19:01:28,042 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158315280]
[2019-11-06 19:01:28,042 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-06 19:01:28,042 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:28,043 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-06 19:01:28,043 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2019-11-06 19:01:28,043 INFO  L87              Difference]: Start difference. First operand 5200 states and 6852 transitions. Second operand 5 states.
[2019-11-06 19:01:29,446 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:01:29,446 INFO  L93              Difference]: Finished difference Result 10482 states and 14336 transitions.
[2019-11-06 19:01:29,447 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-06 19:01:29,447 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 258
[2019-11-06 19:01:29,447 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:01:29,473 INFO  L225             Difference]: With dead ends: 10482
[2019-11-06 19:01:29,473 INFO  L226             Difference]: Without dead ends: 5288
[2019-11-06 19:01:29,486 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182
[2019-11-06 19:01:29,492 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5288 states.
[2019-11-06 19:01:29,606 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5288 to 5216.
[2019-11-06 19:01:29,606 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5216 states.
[2019-11-06 19:01:29,615 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5216 states to 5216 states and 6776 transitions.
[2019-11-06 19:01:29,615 INFO  L78                 Accepts]: Start accepts. Automaton has 5216 states and 6776 transitions. Word has length 258
[2019-11-06 19:01:29,615 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:01:29,616 INFO  L462      AbstractCegarLoop]: Abstraction has 5216 states and 6776 transitions.
[2019-11-06 19:01:29,616 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-06 19:01:29,616 INFO  L276                IsEmpty]: Start isEmpty. Operand 5216 states and 6776 transitions.
[2019-11-06 19:01:29,630 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 271
[2019-11-06 19:01:29,631 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:29,631 INFO  L410         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:29,835 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:01:29,835 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:29,836 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:29,836 INFO  L82        PathProgramCache]: Analyzing trace with hash 1466681545, now seen corresponding path program 1 times
[2019-11-06 19:01:29,836 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:29,836 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265793349]
[2019-11-06 19:01:29,837 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:29,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:30,090 WARN  L191               SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:30,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:30,181 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:30,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:30,238 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:30,366 INFO  L134       CoverageAnalysis]: Checked inductivity of 98 backedges. 65 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-11-06 19:01:30,366 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265793349]
[2019-11-06 19:01:30,366 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41610310]
[2019-11-06 19:01:30,367 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 19:01:30,608 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:30,612 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-11-06 19:01:30,621 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:01:30,710 INFO  L134       CoverageAnalysis]: Checked inductivity of 98 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2019-11-06 19:01:30,711 INFO  L218   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-11-06 19:01:30,711 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11
[2019-11-06 19:01:30,714 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793291042]
[2019-11-06 19:01:30,717 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-11-06 19:01:30,718 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:30,718 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-11-06 19:01:30,718 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110
[2019-11-06 19:01:30,719 INFO  L87              Difference]: Start difference. First operand 5216 states and 6776 transitions. Second operand 11 states.
[2019-11-06 19:01:30,851 WARN  L191               SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 129
[2019-11-06 19:01:31,126 WARN  L191               SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 131
[2019-11-06 19:01:33,128 WARN  L191               SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 130
[2019-11-06 19:01:35,160 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-06 19:01:35,160 INFO  L93              Difference]: Finished difference Result 15091 states and 22090 transitions.
[2019-11-06 19:01:35,161 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2019-11-06 19:01:35,161 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 270
[2019-11-06 19:01:35,161 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-06 19:01:35,252 INFO  L225             Difference]: With dead ends: 15091
[2019-11-06 19:01:35,252 INFO  L226             Difference]: Without dead ends: 9881
[2019-11-06 19:01:35,276 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420
[2019-11-06 19:01:35,289 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9881 states.
[2019-11-06 19:01:35,681 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9881 to 9602.
[2019-11-06 19:01:35,681 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9602 states.
[2019-11-06 19:01:35,706 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9602 states to 9602 states and 12278 transitions.
[2019-11-06 19:01:35,706 INFO  L78                 Accepts]: Start accepts. Automaton has 9602 states and 12278 transitions. Word has length 270
[2019-11-06 19:01:35,706 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-06 19:01:35,706 INFO  L462      AbstractCegarLoop]: Abstraction has 9602 states and 12278 transitions.
[2019-11-06 19:01:35,707 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-11-06 19:01:35,707 INFO  L276                IsEmpty]: Start isEmpty. Operand 9602 states and 12278 transitions.
[2019-11-06 19:01:35,732 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 312
[2019-11-06 19:01:35,732 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-06 19:01:35,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:01:35,946 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-11-06 19:01:35,946 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-06 19:01:35,946 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-06 19:01:35,947 INFO  L82        PathProgramCache]: Analyzing trace with hash 507873321, now seen corresponding path program 1 times
[2019-11-06 19:01:35,947 INFO  L161   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2019-11-06 19:01:35,947 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548190057]
[2019-11-06 19:01:35,947 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-06 19:01:35,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:36,214 WARN  L191               SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 127
[2019-11-06 19:01:36,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:36,330 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:36,365 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:36,472 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 19:01:36,473 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548190057]
[2019-11-06 19:01:36,473 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12226643]
[2019-11-06 19:01:36,473 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 19:01:36,712 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-06 19:01:36,715 INFO  L256         TraceCheckSpWp]: Trace formula consists of 1133 conjuncts, 7 conjunts are in the unsatisfiable core
[2019-11-06 19:01:36,719 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-11-06 19:01:36,744 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:01:36,787 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-11-06 19:01:36,853 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 19:01:36,854 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-11-06 19:01:36,854 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12
[2019-11-06 19:01:36,854 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521379633]
[2019-11-06 19:01:36,855 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-06 19:01:36,855 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-11-06 19:01:36,855 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-06 19:01:36,856 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132
[2019-11-06 19:01:36,856 INFO  L87              Difference]: Start difference. First operand 9602 states and 12278 transitions. Second operand 6 states.