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/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c


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This is Ultimate 0.1.24-13a467a-m
[2019-10-14 23:44:09,164 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-10-14 23:44:09,215 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
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[2019-10-14 23:44:09,219 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2019-10-14 23:44:09,253 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-10-14 23:44:09,270 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-14 23:44:09,271 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-14 23:44:09,272 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-14 23:44:09,272 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-14 23:44:09,272 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-14 23:44:09,272 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-14 23:44:09,273 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-14 23:44:09,273 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-14 23:44:09,273 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-14 23:44:09,273 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-14 23:44:09,273 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-14 23:44:09,274 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-14 23:44:09,274 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-14 23:44:09,274 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-14 23:44:09,275 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-14 23:44:09,275 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-14 23:44:09,276 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-14 23:44:09,276 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-14 23:44:09,276 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-14 23:44:09,276 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-14 23:44:09,276 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-14 23:44:09,277 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 23:44:09,277 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-14 23:44:09,277 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-14 23:44:09,277 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-14 23:44:09,277 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-14 23:44:09,278 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-14 23:44:09,278 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-14 23:44:09,278 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-14 23:44:09,568 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-14 23:44:09,581 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-14 23:44:09,586 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-14 23:44:09,587 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-14 23:44:09,588 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-14 23:44:09,588 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2019-10-14 23:44:09,660 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db2260727/a08b825a4c784ad88a6e3d19c61fac3f/FLAG7f5e8bd6a
[2019-10-14 23:44:10,234 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-14 23:44:10,235 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2019-10-14 23:44:10,252 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db2260727/a08b825a4c784ad88a6e3d19c61fac3f/FLAG7f5e8bd6a
[2019-10-14 23:44:10,477 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db2260727/a08b825a4c784ad88a6e3d19c61fac3f
[2019-10-14 23:44:10,487 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-14 23:44:10,488 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-14 23:44:10,489 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-14 23:44:10,489 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-14 23:44:10,493 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-14 23:44:10,493 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:10" (1/1) ...
[2019-10-14 23:44:10,498 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cbcfe5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:10, skipping insertion in model container
[2019-10-14 23:44:10,499 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:44:10" (1/1) ...
[2019-10-14 23:44:10,506 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-14 23:44:10,583 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-14 23:44:11,220 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 23:44:11,237 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-14 23:44:11,647 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-14 23:44:11,666 INFO  L192         MainTranslator]: Completed translation
[2019-10-14 23:44:11,667 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:11 WrapperNode
[2019-10-14 23:44:11,667 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-14 23:44:11,668 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-14 23:44:11,668 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-14 23:44:11,668 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-14 23:44:11,679 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:11" (1/1) ...
[2019-10-14 23:44:11,679 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:11" (1/1) ...
[2019-10-14 23:44:11,698 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:11" (1/1) ...
[2019-10-14 23:44:11,698 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:11" (1/1) ...
[2019-10-14 23:44:11,730 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:11" (1/1) ...
[2019-10-14 23:44:11,752 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:11" (1/1) ...
[2019-10-14 23:44:11,759 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:11" (1/1) ...
[2019-10-14 23:44:11,768 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-14 23:44:11,769 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-14 23:44:11,769 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-14 23:44:11,769 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-14 23:44:11,770 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:11" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-14 23:44:11,847 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-14 23:44:11,847 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-14 23:44:11,847 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-14 23:44:11,848 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-14 23:44:11,848 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2019-10-14 23:44:11,848 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2019-10-14 23:44:11,848 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2019-10-14 23:44:11,848 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-10-14 23:44:11,849 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2019-10-14 23:44:11,849 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2019-10-14 23:44:11,849 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2019-10-14 23:44:11,849 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2019-10-14 23:44:11,850 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2019-10-14 23:44:11,850 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2019-10-14 23:44:11,850 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2019-10-14 23:44:11,850 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-14 23:44:11,850 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-14 23:44:11,851 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-14 23:44:13,212 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-14 23:44:13,213 INFO  L284             CfgBuilder]: Removed 0 assume(true) statements.
[2019-10-14 23:44:13,215 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:13 BoogieIcfgContainer
[2019-10-14 23:44:13,215 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-14 23:44:13,216 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-14 23:44:13,217 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-14 23:44:13,220 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-14 23:44:13,220 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:44:10" (1/3) ...
[2019-10-14 23:44:13,221 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740313e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:13, skipping insertion in model container
[2019-10-14 23:44:13,221 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:44:11" (2/3) ...
[2019-10-14 23:44:13,222 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740313e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:44:13, skipping insertion in model container
[2019-10-14 23:44:13,222 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:44:13" (3/3) ...
[2019-10-14 23:44:13,224 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2019-10-14 23:44:13,234 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-14 23:44:13,242 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations.
[2019-10-14 23:44:13,255 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2019-10-14 23:44:13,287 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-14 23:44:13,287 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-14 23:44:13,287 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-14 23:44:13,287 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-14 23:44:13,287 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-14 23:44:13,288 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-14 23:44:13,288 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-14 23:44:13,288 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-14 23:44:13,317 INFO  L276                IsEmpty]: Start isEmpty. Operand 371 states.
[2019-10-14 23:44:13,334 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2019-10-14 23:44:13,335 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:13,336 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 23:44:13,338 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:13,343 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:13,344 INFO  L82        PathProgramCache]: Analyzing trace with hash -737000611, now seen corresponding path program 1 times
[2019-10-14 23:44:13,352 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:13,353 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687298388]
[2019-10-14 23:44:13,353 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:13,353 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:13,354 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:13,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:14,396 WARN  L191               SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-14 23:44:14,404 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:14,476 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:14,476 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687298388]
[2019-10-14 23:44:14,477 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:14,477 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 23:44:14,478 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827090676]
[2019-10-14 23:44:14,483 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-14 23:44:14,484 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:14,497 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-14 23:44:14,498 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-14 23:44:14,500 INFO  L87              Difference]: Start difference. First operand 371 states. Second operand 4 states.
[2019-10-14 23:44:14,875 WARN  L191               SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2019-10-14 23:44:17,220 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:17,220 INFO  L93              Difference]: Finished difference Result 667 states and 1188 transitions.
[2019-10-14 23:44:17,221 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 23:44:17,222 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 140
[2019-10-14 23:44:17,223 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:17,242 INFO  L225             Difference]: With dead ends: 667
[2019-10-14 23:44:17,242 INFO  L226             Difference]: Without dead ends: 520
[2019-10-14 23:44:17,247 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-10-14 23:44:17,267 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 520 states.
[2019-10-14 23:44:17,344 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 518.
[2019-10-14 23:44:17,346 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 518 states.
[2019-10-14 23:44:17,350 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 755 transitions.
[2019-10-14 23:44:17,351 INFO  L78                 Accepts]: Start accepts. Automaton has 518 states and 755 transitions. Word has length 140
[2019-10-14 23:44:17,354 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:17,354 INFO  L462      AbstractCegarLoop]: Abstraction has 518 states and 755 transitions.
[2019-10-14 23:44:17,354 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-14 23:44:17,355 INFO  L276                IsEmpty]: Start isEmpty. Operand 518 states and 755 transitions.
[2019-10-14 23:44:17,360 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2019-10-14 23:44:17,360 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:17,361 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 23:44:17,366 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:17,366 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:17,366 INFO  L82        PathProgramCache]: Analyzing trace with hash 1264797844, now seen corresponding path program 1 times
[2019-10-14 23:44:17,367 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:17,367 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450824905]
[2019-10-14 23:44:17,367 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:17,368 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:17,368 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:17,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:17,847 WARN  L191               SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-14 23:44:17,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:17,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:17,886 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450824905]
[2019-10-14 23:44:17,887 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:17,887 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 23:44:17,887 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117535429]
[2019-10-14 23:44:17,889 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-14 23:44:17,889 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:17,889 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-14 23:44:17,890 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-14 23:44:17,890 INFO  L87              Difference]: Start difference. First operand 518 states and 755 transitions. Second operand 4 states.
[2019-10-14 23:44:18,199 WARN  L191               SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2019-10-14 23:44:20,011 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:20,012 INFO  L93              Difference]: Finished difference Result 1029 states and 1554 transitions.
[2019-10-14 23:44:20,012 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 23:44:20,012 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 140
[2019-10-14 23:44:20,013 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:20,019 INFO  L225             Difference]: With dead ends: 1029
[2019-10-14 23:44:20,019 INFO  L226             Difference]: Without dead ends: 824
[2019-10-14 23:44:20,021 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-10-14 23:44:20,023 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 824 states.
[2019-10-14 23:44:20,061 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 822.
[2019-10-14 23:44:20,061 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 822 states.
[2019-10-14 23:44:20,065 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1219 transitions.
[2019-10-14 23:44:20,065 INFO  L78                 Accepts]: Start accepts. Automaton has 822 states and 1219 transitions. Word has length 140
[2019-10-14 23:44:20,066 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:20,066 INFO  L462      AbstractCegarLoop]: Abstraction has 822 states and 1219 transitions.
[2019-10-14 23:44:20,066 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-14 23:44:20,066 INFO  L276                IsEmpty]: Start isEmpty. Operand 822 states and 1219 transitions.
[2019-10-14 23:44:20,069 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2019-10-14 23:44:20,069 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:20,069 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 23:44:20,070 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:20,070 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:20,070 INFO  L82        PathProgramCache]: Analyzing trace with hash -1075415587, now seen corresponding path program 1 times
[2019-10-14 23:44:20,070 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:20,071 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452270885]
[2019-10-14 23:44:20,071 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:20,071 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:20,071 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:20,108 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:20,666 WARN  L191               SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-14 23:44:20,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:20,710 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:20,711 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452270885]
[2019-10-14 23:44:20,712 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:20,720 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 23:44:20,720 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727721864]
[2019-10-14 23:44:20,722 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-14 23:44:20,722 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:20,722 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-14 23:44:20,723 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-14 23:44:20,723 INFO  L87              Difference]: Start difference. First operand 822 states and 1219 transitions. Second operand 4 states.
[2019-10-14 23:44:21,009 WARN  L191               SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2019-10-14 23:44:23,060 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:23,060 INFO  L93              Difference]: Finished difference Result 1781 states and 2727 transitions.
[2019-10-14 23:44:23,061 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 23:44:23,061 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 140
[2019-10-14 23:44:23,062 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:23,070 INFO  L225             Difference]: With dead ends: 1781
[2019-10-14 23:44:23,071 INFO  L226             Difference]: Without dead ends: 1436
[2019-10-14 23:44:23,077 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-10-14 23:44:23,079 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1436 states.
[2019-10-14 23:44:23,136 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1434.
[2019-10-14 23:44:23,136 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1434 states.
[2019-10-14 23:44:23,144 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2151 transitions.
[2019-10-14 23:44:23,144 INFO  L78                 Accepts]: Start accepts. Automaton has 1434 states and 2151 transitions. Word has length 140
[2019-10-14 23:44:23,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:23,146 INFO  L462      AbstractCegarLoop]: Abstraction has 1434 states and 2151 transitions.
[2019-10-14 23:44:23,146 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-14 23:44:23,146 INFO  L276                IsEmpty]: Start isEmpty. Operand 1434 states and 2151 transitions.
[2019-10-14 23:44:23,152 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2019-10-14 23:44:23,152 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:23,152 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 23:44:23,153 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:23,153 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:23,153 INFO  L82        PathProgramCache]: Analyzing trace with hash -1075754211, now seen corresponding path program 1 times
[2019-10-14 23:44:23,153 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:23,154 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053556673]
[2019-10-14 23:44:23,154 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:23,154 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:23,154 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:23,392 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:23,824 WARN  L191               SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-14 23:44:23,829 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:23,863 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:23,864 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053556673]
[2019-10-14 23:44:23,864 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:23,864 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-14 23:44:23,865 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410288916]
[2019-10-14 23:44:23,865 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 23:44:23,865 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:23,866 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 23:44:23,866 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-14 23:44:23,866 INFO  L87              Difference]: Start difference. First operand 1434 states and 2151 transitions. Second operand 5 states.
[2019-10-14 23:44:26,711 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:26,712 INFO  L93              Difference]: Finished difference Result 4221 states and 6322 transitions.
[2019-10-14 23:44:26,712 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 23:44:26,713 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 140
[2019-10-14 23:44:26,713 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:26,726 INFO  L225             Difference]: With dead ends: 4221
[2019-10-14 23:44:26,726 INFO  L226             Difference]: Without dead ends: 2800
[2019-10-14 23:44:26,730 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-14 23:44:26,733 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2800 states.
[2019-10-14 23:44:26,832 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2760.
[2019-10-14 23:44:26,833 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2760 states.
[2019-10-14 23:44:26,843 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 4117 transitions.
[2019-10-14 23:44:26,844 INFO  L78                 Accepts]: Start accepts. Automaton has 2760 states and 4117 transitions. Word has length 140
[2019-10-14 23:44:26,844 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:26,844 INFO  L462      AbstractCegarLoop]: Abstraction has 2760 states and 4117 transitions.
[2019-10-14 23:44:26,847 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 23:44:26,847 INFO  L276                IsEmpty]: Start isEmpty. Operand 2760 states and 4117 transitions.
[2019-10-14 23:44:26,851 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2019-10-14 23:44:26,852 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:26,852 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 23:44:26,852 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:26,852 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:26,853 INFO  L82        PathProgramCache]: Analyzing trace with hash -127121487, now seen corresponding path program 1 times
[2019-10-14 23:44:26,854 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:26,854 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038291809]
[2019-10-14 23:44:26,855 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:26,855 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:26,855 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:26,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:27,340 WARN  L191               SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-14 23:44:27,348 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:27,425 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:27,425 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038291809]
[2019-10-14 23:44:27,425 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:27,426 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 23:44:27,426 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620854504]
[2019-10-14 23:44:27,427 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-14 23:44:27,427 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:27,427 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-14 23:44:27,428 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-14 23:44:27,428 INFO  L87              Difference]: Start difference. First operand 2760 states and 4117 transitions. Second operand 4 states.
[2019-10-14 23:44:29,331 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:29,332 INFO  L93              Difference]: Finished difference Result 8234 states and 12281 transitions.
[2019-10-14 23:44:29,332 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-14 23:44:29,332 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 141
[2019-10-14 23:44:29,333 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:29,358 INFO  L225             Difference]: With dead ends: 8234
[2019-10-14 23:44:29,358 INFO  L226             Difference]: Without dead ends: 5506
[2019-10-14 23:44:29,365 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-14 23:44:29,371 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5506 states.
[2019-10-14 23:44:29,570 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5506 to 2762.
[2019-10-14 23:44:29,570 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2762 states.
[2019-10-14 23:44:29,581 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4119 transitions.
[2019-10-14 23:44:29,581 INFO  L78                 Accepts]: Start accepts. Automaton has 2762 states and 4119 transitions. Word has length 141
[2019-10-14 23:44:29,581 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:29,582 INFO  L462      AbstractCegarLoop]: Abstraction has 2762 states and 4119 transitions.
[2019-10-14 23:44:29,582 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-14 23:44:29,582 INFO  L276                IsEmpty]: Start isEmpty. Operand 2762 states and 4119 transitions.
[2019-10-14 23:44:29,586 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2019-10-14 23:44:29,587 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:29,587 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 23:44:29,587 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:29,587 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:29,588 INFO  L82        PathProgramCache]: Analyzing trace with hash -1322555170, now seen corresponding path program 1 times
[2019-10-14 23:44:29,588 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:29,588 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743341127]
[2019-10-14 23:44:29,588 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:29,588 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:29,589 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:29,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:30,135 WARN  L191               SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-14 23:44:30,140 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:30,176 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:30,176 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743341127]
[2019-10-14 23:44:30,177 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:30,181 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-14 23:44:30,182 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106969233]
[2019-10-14 23:44:30,182 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 23:44:30,183 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:30,183 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 23:44:30,184 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-14 23:44:30,184 INFO  L87              Difference]: Start difference. First operand 2762 states and 4119 transitions. Second operand 5 states.
[2019-10-14 23:44:31,690 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:31,691 INFO  L93              Difference]: Finished difference Result 5510 states and 8220 transitions.
[2019-10-14 23:44:31,691 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 23:44:31,691 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 142
[2019-10-14 23:44:31,692 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:31,704 INFO  L225             Difference]: With dead ends: 5510
[2019-10-14 23:44:31,704 INFO  L226             Difference]: Without dead ends: 2760
[2019-10-14 23:44:31,709 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-14 23:44:31,712 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2760 states.
[2019-10-14 23:44:31,801 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2760.
[2019-10-14 23:44:31,802 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2760 states.
[2019-10-14 23:44:31,810 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 4115 transitions.
[2019-10-14 23:44:31,811 INFO  L78                 Accepts]: Start accepts. Automaton has 2760 states and 4115 transitions. Word has length 142
[2019-10-14 23:44:31,811 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:31,811 INFO  L462      AbstractCegarLoop]: Abstraction has 2760 states and 4115 transitions.
[2019-10-14 23:44:31,811 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 23:44:31,811 INFO  L276                IsEmpty]: Start isEmpty. Operand 2760 states and 4115 transitions.
[2019-10-14 23:44:31,816 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2019-10-14 23:44:31,816 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:31,816 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 23:44:31,816 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:31,817 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:31,817 INFO  L82        PathProgramCache]: Analyzing trace with hash -82288669, now seen corresponding path program 1 times
[2019-10-14 23:44:31,817 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:31,817 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899003859]
[2019-10-14 23:44:31,817 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:31,818 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:31,818 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:31,843 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:32,215 WARN  L191               SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-14 23:44:32,220 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:32,262 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:32,263 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899003859]
[2019-10-14 23:44:32,263 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:32,263 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 23:44:32,263 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72906573]
[2019-10-14 23:44:32,264 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-14 23:44:32,264 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:32,264 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-14 23:44:32,265 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-14 23:44:32,265 INFO  L87              Difference]: Start difference. First operand 2760 states and 4115 transitions. Second operand 4 states.
[2019-10-14 23:44:34,914 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:34,914 INFO  L93              Difference]: Finished difference Result 6674 states and 9953 transitions.
[2019-10-14 23:44:34,922 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-14 23:44:34,922 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 142
[2019-10-14 23:44:34,923 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:34,940 INFO  L225             Difference]: With dead ends: 6674
[2019-10-14 23:44:34,940 INFO  L226             Difference]: Without dead ends: 4094
[2019-10-14 23:44:34,945 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-14 23:44:34,950 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4094 states.
[2019-10-14 23:44:35,087 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 4054.
[2019-10-14 23:44:35,088 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4054 states.
[2019-10-14 23:44:35,097 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 5963 transitions.
[2019-10-14 23:44:35,098 INFO  L78                 Accepts]: Start accepts. Automaton has 4054 states and 5963 transitions. Word has length 142
[2019-10-14 23:44:35,098 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:35,099 INFO  L462      AbstractCegarLoop]: Abstraction has 4054 states and 5963 transitions.
[2019-10-14 23:44:35,099 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-14 23:44:35,099 INFO  L276                IsEmpty]: Start isEmpty. Operand 4054 states and 5963 transitions.
[2019-10-14 23:44:35,105 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2019-10-14 23:44:35,105 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:35,105 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 23:44:35,106 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:35,106 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:35,106 INFO  L82        PathProgramCache]: Analyzing trace with hash 1177772960, now seen corresponding path program 1 times
[2019-10-14 23:44:35,106 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:35,106 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420276446]
[2019-10-14 23:44:35,106 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:35,107 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:35,107 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:35,173 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:35,563 WARN  L191               SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-14 23:44:35,571 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:35,751 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:35,752 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420276446]
[2019-10-14 23:44:35,754 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:35,754 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-14 23:44:35,756 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329132634]
[2019-10-14 23:44:35,757 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-14 23:44:35,757 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:35,757 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-14 23:44:35,759 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2019-10-14 23:44:35,759 INFO  L87              Difference]: Start difference. First operand 4054 states and 5963 transitions. Second operand 9 states.
[2019-10-14 23:44:36,257 WARN  L191               SmtUtils]: Spent 404.00 ms on a formula simplification that was a NOOP. DAG size: 199
[2019-10-14 23:44:38,843 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:38,843 INFO  L93              Difference]: Finished difference Result 13639 states and 20990 transitions.
[2019-10-14 23:44:38,844 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2019-10-14 23:44:38,844 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 145
[2019-10-14 23:44:38,844 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:38,882 INFO  L225             Difference]: With dead ends: 13639
[2019-10-14 23:44:38,882 INFO  L226             Difference]: Without dead ends: 9790
[2019-10-14 23:44:38,891 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342
[2019-10-14 23:44:38,901 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9790 states.
[2019-10-14 23:44:39,215 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9790 to 5376.
[2019-10-14 23:44:39,216 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5376 states.
[2019-10-14 23:44:39,227 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 7951 transitions.
[2019-10-14 23:44:39,228 INFO  L78                 Accepts]: Start accepts. Automaton has 5376 states and 7951 transitions. Word has length 145
[2019-10-14 23:44:39,228 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:39,228 INFO  L462      AbstractCegarLoop]: Abstraction has 5376 states and 7951 transitions.
[2019-10-14 23:44:39,229 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-14 23:44:39,229 INFO  L276                IsEmpty]: Start isEmpty. Operand 5376 states and 7951 transitions.
[2019-10-14 23:44:39,235 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2019-10-14 23:44:39,235 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:39,235 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 23:44:39,235 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:39,235 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:39,236 INFO  L82        PathProgramCache]: Analyzing trace with hash -142350002, now seen corresponding path program 1 times
[2019-10-14 23:44:39,236 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:39,236 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742340082]
[2019-10-14 23:44:39,236 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:39,236 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:39,237 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:39,342 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:39,669 WARN  L191               SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-14 23:44:39,673 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:39,763 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:39,764 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742340082]
[2019-10-14 23:44:39,764 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:39,764 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-14 23:44:39,764 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108049973]
[2019-10-14 23:44:39,765 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-14 23:44:39,765 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:39,765 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-14 23:44:39,765 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-14 23:44:39,766 INFO  L87              Difference]: Start difference. First operand 5376 states and 7951 transitions. Second operand 5 states.
[2019-10-14 23:44:42,574 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-14 23:44:42,574 INFO  L93              Difference]: Finished difference Result 14463 states and 21402 transitions.
[2019-10-14 23:44:42,575 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-14 23:44:42,575 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 145
[2019-10-14 23:44:42,575 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-14 23:44:42,593 INFO  L225             Difference]: With dead ends: 14463
[2019-10-14 23:44:42,593 INFO  L226             Difference]: Without dead ends: 9110
[2019-10-14 23:44:42,603 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-14 23:44:42,612 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9110 states.
[2019-10-14 23:44:43,090 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9110 to 9080.
[2019-10-14 23:44:43,090 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9080 states.
[2019-10-14 23:44:43,110 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9080 states to 9080 states and 13336 transitions.
[2019-10-14 23:44:43,110 INFO  L78                 Accepts]: Start accepts. Automaton has 9080 states and 13336 transitions. Word has length 145
[2019-10-14 23:44:43,111 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-14 23:44:43,111 INFO  L462      AbstractCegarLoop]: Abstraction has 9080 states and 13336 transitions.
[2019-10-14 23:44:43,111 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-14 23:44:43,111 INFO  L276                IsEmpty]: Start isEmpty. Operand 9080 states and 13336 transitions.
[2019-10-14 23:44:43,120 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2019-10-14 23:44:43,120 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-14 23:44:43,120 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-14 23:44:43,121 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-14 23:44:43,121 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-14 23:44:43,121 INFO  L82        PathProgramCache]: Analyzing trace with hash -140462378, now seen corresponding path program 1 times
[2019-10-14 23:44:43,121 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-14 23:44:43,121 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818928554]
[2019-10-14 23:44:43,121 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:43,122 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-14 23:44:43,122 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-14 23:44:43,145 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:43,463 WARN  L191               SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-14 23:44:43,467 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-14 23:44:43,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-14 23:44:43,511 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818928554]
[2019-10-14 23:44:43,511 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-14 23:44:43,512 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-14 23:44:43,512 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529578039]
[2019-10-14 23:44:43,512 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-14 23:44:43,512 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-14 23:44:43,513 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-14 23:44:43,513 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-14 23:44:43,513 INFO  L87              Difference]: Start difference. First operand 9080 states and 13336 transitions. Second operand 4 states.