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.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 19:44:33,478 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 19:44:33,482 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-10-13 19:44:33,496 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2019-10-13 19:44:33,522 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 19:44:33,524 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 19:44:33,526 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 19:44:33,528 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 19:44:33,530 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2019-10-13 19:44:33,536 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
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[2019-10-13 19:44:33,563 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
[2019-10-13 19:44:33,580 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 19:44:33,581 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 19:44:33,582 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 19:44:33,582 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 19:44:33,582 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 19:44:33,583 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 19:44:33,583 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 19:44:33,583 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 19:44:33,583 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 19:44:33,583 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 19:44:33,584 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 19:44:33,584 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 19:44:33,584 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 19:44:33,584 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 19:44:33,584 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 19:44:33,585 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 19:44:33,585 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 19:44:33,585 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 19:44:33,585 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 19:44:33,586 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 19:44:33,586 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 19:44:33,586 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 19:44:33,586 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 19:44:33,586 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 19:44:33,587 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 19:44:33,587 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 19:44:33,587 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 19:44:33,587 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 19:44:33,587 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 19:44:33,858 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 19:44:33,871 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 19:44:33,875 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 19:44:33,876 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 19:44:33,876 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 19:44:33,877 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c
[2019-10-13 19:44:33,939 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f9d09dd5/a56327303a8c4ea7898e1bddb88eb8a8/FLAGaf6998fcc
[2019-10-13 19:44:34,466 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 19:44:34,467 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c
[2019-10-13 19:44:34,482 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f9d09dd5/a56327303a8c4ea7898e1bddb88eb8a8/FLAGaf6998fcc
[2019-10-13 19:44:34,808 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f9d09dd5/a56327303a8c4ea7898e1bddb88eb8a8
[2019-10-13 19:44:34,819 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 19:44:34,821 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 19:44:34,822 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 19:44:34,822 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 19:44:34,826 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 19:44:34,827 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:44:34" (1/1) ...
[2019-10-13 19:44:34,830 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b5d4e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:34, skipping insertion in model container
[2019-10-13 19:44:34,830 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:44:34" (1/1) ...
[2019-10-13 19:44:34,838 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 19:44:34,915 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 19:44:35,468 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 19:44:35,482 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 19:44:35,640 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 19:44:35,660 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 19:44:35,661 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:35 WrapperNode
[2019-10-13 19:44:35,661 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 19:44:35,662 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 19:44:35,662 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 19:44:35,662 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 19:44:35,675 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:35" (1/1) ...
[2019-10-13 19:44:35,675 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:35" (1/1) ...
[2019-10-13 19:44:35,692 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:35" (1/1) ...
[2019-10-13 19:44:35,692 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:35" (1/1) ...
[2019-10-13 19:44:35,719 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:35" (1/1) ...
[2019-10-13 19:44:35,740 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:35" (1/1) ...
[2019-10-13 19:44:35,744 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:35" (1/1) ...
[2019-10-13 19:44:35,751 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 19:44:35,752 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 19:44:35,752 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 19:44:35,752 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 19:44:35,753 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:35" (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
[2019-10-13 19:44:35,838 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 19:44:35,839 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 19:44:35,839 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 19:44:35,839 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 19:44:35,839 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2019-10-13 19:44:35,839 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2019-10-13 19:44:35,840 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2019-10-13 19:44:35,840 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-10-13 19:44:35,842 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2019-10-13 19:44:35,842 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2019-10-13 19:44:35,842 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2019-10-13 19:44:35,843 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2019-10-13 19:44:35,843 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2019-10-13 19:44:35,843 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2019-10-13 19:44:35,844 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2019-10-13 19:44:35,844 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 19:44:35,846 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 19:44:35,847 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 19:44:37,379 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 19:44:37,380 INFO  L284             CfgBuilder]: Removed 0 assume(true) statements.
[2019-10-13 19:44:37,381 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:44:37 BoogieIcfgContainer
[2019-10-13 19:44:37,382 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 19:44:37,383 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 19:44:37,383 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 19:44:37,386 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 19:44:37,387 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:44:34" (1/3) ...
[2019-10-13 19:44:37,387 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58aa5483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:44:37, skipping insertion in model container
[2019-10-13 19:44:37,388 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:44:35" (2/3) ...
[2019-10-13 19:44:37,388 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58aa5483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:44:37, skipping insertion in model container
[2019-10-13 19:44:37,388 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:44:37" (3/3) ...
[2019-10-13 19:44:37,390 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c
[2019-10-13 19:44:37,400 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 19:44:37,409 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 19:44:37,421 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 19:44:37,452 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 19:44:37,453 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 19:44:37,453 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 19:44:37,453 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 19:44:37,453 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 19:44:37,453 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 19:44:37,454 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 19:44:37,454 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 19:44:37,482 INFO  L276                IsEmpty]: Start isEmpty. Operand 304 states.
[2019-10-13 19:44:37,499 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2019-10-13 19:44:37,499 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:44:37,500 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]
[2019-10-13 19:44:37,502 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:44:37,509 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:44:37,509 INFO  L82        PathProgramCache]: Analyzing trace with hash -1527007645, now seen corresponding path program 1 times
[2019-10-13 19:44:37,519 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:44:37,520 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797050782]
[2019-10-13 19:44:37,520 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:37,520 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:37,521 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:44:37,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:38,574 WARN  L191               SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-10-13 19:44:38,581 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:38,640 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:44:38,641 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797050782]
[2019-10-13 19:44:38,642 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:44:38,642 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:44:38,642 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766498841]
[2019-10-13 19:44:38,649 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:44:38,649 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:44:38,663 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:44:38,664 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:44:38,666 INFO  L87              Difference]: Start difference. First operand 304 states. Second operand 4 states.
[2019-10-13 19:44:38,971 WARN  L191               SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 173
[2019-10-13 19:44:40,659 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:44:40,659 INFO  L93              Difference]: Finished difference Result 613 states and 1073 transitions.
[2019-10-13 19:44:40,660 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:44:40,661 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 142
[2019-10-13 19:44:40,663 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:44:40,681 INFO  L225             Difference]: With dead ends: 613
[2019-10-13 19:44:40,682 INFO  L226             Difference]: Without dead ends: 493
[2019-10-13 19:44:40,686 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
[2019-10-13 19:44:40,705 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 493 states.
[2019-10-13 19:44:40,769 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491.
[2019-10-13 19:44:40,771 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 491 states.
[2019-10-13 19:44:40,774 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 734 transitions.
[2019-10-13 19:44:40,776 INFO  L78                 Accepts]: Start accepts. Automaton has 491 states and 734 transitions. Word has length 142
[2019-10-13 19:44:40,776 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:44:40,777 INFO  L462      AbstractCegarLoop]: Abstraction has 491 states and 734 transitions.
[2019-10-13 19:44:40,777 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:44:40,777 INFO  L276                IsEmpty]: Start isEmpty. Operand 491 states and 734 transitions.
[2019-10-13 19:44:40,781 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2019-10-13 19:44:40,782 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:44:40,782 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]
[2019-10-13 19:44:40,782 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:44:40,783 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:44:40,783 INFO  L82        PathProgramCache]: Analyzing trace with hash 1999332176, now seen corresponding path program 1 times
[2019-10-13 19:44:40,783 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:44:40,783 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152774370]
[2019-10-13 19:44:40,784 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:40,784 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:40,784 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:44:40,837 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:41,189 WARN  L191               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-10-13 19:44:41,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:41,240 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:44:41,240 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152774370]
[2019-10-13 19:44:41,241 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:44:41,241 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:44:41,241 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935924726]
[2019-10-13 19:44:41,243 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:44:41,244 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:44:41,244 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:44:41,244 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:44:41,245 INFO  L87              Difference]: Start difference. First operand 491 states and 734 transitions. Second operand 4 states.
[2019-10-13 19:44:41,496 WARN  L191               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 173
[2019-10-13 19:44:42,795 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:44:42,795 INFO  L93              Difference]: Finished difference Result 1061 states and 1631 transitions.
[2019-10-13 19:44:42,796 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:44:42,796 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 142
[2019-10-13 19:44:42,798 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:44:42,805 INFO  L225             Difference]: With dead ends: 1061
[2019-10-13 19:44:42,806 INFO  L226             Difference]: Without dead ends: 863
[2019-10-13 19:44:42,808 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:44:42,810 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 863 states.
[2019-10-13 19:44:42,861 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 861.
[2019-10-13 19:44:42,861 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 861 states.
[2019-10-13 19:44:42,866 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1298 transitions.
[2019-10-13 19:44:42,866 INFO  L78                 Accepts]: Start accepts. Automaton has 861 states and 1298 transitions. Word has length 142
[2019-10-13 19:44:42,867 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:44:42,867 INFO  L462      AbstractCegarLoop]: Abstraction has 861 states and 1298 transitions.
[2019-10-13 19:44:42,867 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:44:42,868 INFO  L276                IsEmpty]: Start isEmpty. Operand 861 states and 1298 transitions.
[2019-10-13 19:44:42,871 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2019-10-13 19:44:42,872 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:44:42,872 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]
[2019-10-13 19:44:42,872 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:44:42,873 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:44:42,873 INFO  L82        PathProgramCache]: Analyzing trace with hash -686393694, now seen corresponding path program 1 times
[2019-10-13 19:44:42,873 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:44:42,873 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285091974]
[2019-10-13 19:44:42,874 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:42,874 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:42,874 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:44:43,061 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:43,436 WARN  L191               SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-10-13 19:44:43,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:43,476 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:44:43,477 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285091974]
[2019-10-13 19:44:43,477 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:44:43,477 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 19:44:43,478 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089197016]
[2019-10-13 19:44:43,478 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 19:44:43,479 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:44:43,479 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 19:44:43,479 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:44:43,479 INFO  L87              Difference]: Start difference. First operand 861 states and 1298 transitions. Second operand 5 states.
[2019-10-13 19:44:45,857 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:44:45,858 INFO  L93              Difference]: Finished difference Result 2510 states and 3779 transitions.
[2019-10-13 19:44:45,858 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:44:45,858 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 142
[2019-10-13 19:44:45,859 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:44:45,869 INFO  L225             Difference]: With dead ends: 2510
[2019-10-13 19:44:45,869 INFO  L226             Difference]: Without dead ends: 1662
[2019-10-13 19:44:45,877 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
[2019-10-13 19:44:45,879 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1662 states.
[2019-10-13 19:44:45,952 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1662 to 1660.
[2019-10-13 19:44:45,953 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1660 states.
[2019-10-13 19:44:45,961 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2478 transitions.
[2019-10-13 19:44:45,961 INFO  L78                 Accepts]: Start accepts. Automaton has 1660 states and 2478 transitions. Word has length 142
[2019-10-13 19:44:45,962 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:44:45,962 INFO  L462      AbstractCegarLoop]: Abstraction has 1660 states and 2478 transitions.
[2019-10-13 19:44:45,963 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 19:44:45,963 INFO  L276                IsEmpty]: Start isEmpty. Operand 1660 states and 2478 transitions.
[2019-10-13 19:44:45,967 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2019-10-13 19:44:45,968 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:44:45,968 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]
[2019-10-13 19:44:45,968 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:44:45,968 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:44:45,969 INFO  L82        PathProgramCache]: Analyzing trace with hash -755552508, now seen corresponding path program 1 times
[2019-10-13 19:44:45,969 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:44:45,969 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297361850]
[2019-10-13 19:44:45,969 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:45,969 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:45,970 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:44:45,987 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:46,280 WARN  L191               SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-10-13 19:44:46,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:46,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:44:46,323 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297361850]
[2019-10-13 19:44:46,323 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:44:46,324 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:44:46,325 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980953093]
[2019-10-13 19:44:46,326 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:44:46,326 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:44:46,326 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:44:46,327 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:44:46,327 INFO  L87              Difference]: Start difference. First operand 1660 states and 2478 transitions. Second operand 4 states.
[2019-10-13 19:44:48,786 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:44:48,786 INFO  L93              Difference]: Finished difference Result 4934 states and 7364 transitions.
[2019-10-13 19:44:48,787 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-13 19:44:48,787 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 143
[2019-10-13 19:44:48,788 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:44:48,805 INFO  L225             Difference]: With dead ends: 4934
[2019-10-13 19:44:48,806 INFO  L226             Difference]: Without dead ends: 3306
[2019-10-13 19:44:48,810 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:44:48,814 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3306 states.
[2019-10-13 19:44:48,941 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3306 to 1662.
[2019-10-13 19:44:48,941 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1662 states.
[2019-10-13 19:44:48,950 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2480 transitions.
[2019-10-13 19:44:48,950 INFO  L78                 Accepts]: Start accepts. Automaton has 1662 states and 2480 transitions. Word has length 143
[2019-10-13 19:44:48,951 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:44:48,951 INFO  L462      AbstractCegarLoop]: Abstraction has 1662 states and 2480 transitions.
[2019-10-13 19:44:48,951 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:44:48,952 INFO  L276                IsEmpty]: Start isEmpty. Operand 1662 states and 2480 transitions.
[2019-10-13 19:44:48,957 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2019-10-13 19:44:48,958 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:44:48,958 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]
[2019-10-13 19:44:48,958 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:44:48,959 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:44:48,959 INFO  L82        PathProgramCache]: Analyzing trace with hash -1401891903, now seen corresponding path program 1 times
[2019-10-13 19:44:48,959 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:44:48,960 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398654040]
[2019-10-13 19:44:48,961 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:48,961 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:48,961 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:44:48,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:49,321 WARN  L191               SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-10-13 19:44:49,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:49,364 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:44:49,364 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398654040]
[2019-10-13 19:44:49,365 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:44:49,365 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:44:49,365 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505475489]
[2019-10-13 19:44:49,366 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:44:49,366 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:44:49,366 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:44:49,367 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:44:49,367 INFO  L87              Difference]: Start difference. First operand 1662 states and 2480 transitions. Second operand 4 states.
[2019-10-13 19:44:51,681 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:44:51,682 INFO  L93              Difference]: Finished difference Result 4382 states and 6541 transitions.
[2019-10-13 19:44:51,682 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-13 19:44:51,682 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 144
[2019-10-13 19:44:51,683 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:44:51,699 INFO  L225             Difference]: With dead ends: 4382
[2019-10-13 19:44:51,700 INFO  L226             Difference]: Without dead ends: 2890
[2019-10-13 19:44:51,704 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:44:51,707 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2890 states.
[2019-10-13 19:44:51,843 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2888.
[2019-10-13 19:44:51,844 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2888 states.
[2019-10-13 19:44:51,853 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4253 transitions.
[2019-10-13 19:44:51,853 INFO  L78                 Accepts]: Start accepts. Automaton has 2888 states and 4253 transitions. Word has length 144
[2019-10-13 19:44:51,854 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:44:51,854 INFO  L462      AbstractCegarLoop]: Abstraction has 2888 states and 4253 transitions.
[2019-10-13 19:44:51,854 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:44:51,855 INFO  L276                IsEmpty]: Start isEmpty. Operand 2888 states and 4253 transitions.
[2019-10-13 19:44:51,860 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2019-10-13 19:44:51,860 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:44:51,861 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]
[2019-10-13 19:44:51,861 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:44:51,862 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:44:51,862 INFO  L82        PathProgramCache]: Analyzing trace with hash 1372424798, now seen corresponding path program 1 times
[2019-10-13 19:44:51,862 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:44:51,862 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654588420]
[2019-10-13 19:44:51,863 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:51,863 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:51,863 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:44:52,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:52,305 WARN  L191               SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-10-13 19:44:52,310 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:52,336 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:44:52,337 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654588420]
[2019-10-13 19:44:52,337 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:44:52,337 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 19:44:52,338 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714993677]
[2019-10-13 19:44:52,338 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 19:44:52,339 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:44:52,339 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 19:44:52,340 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:44:52,341 INFO  L87              Difference]: Start difference. First operand 2888 states and 4253 transitions. Second operand 5 states.
[2019-10-13 19:44:53,921 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:44:53,922 INFO  L93              Difference]: Finished difference Result 5958 states and 8716 transitions.
[2019-10-13 19:44:53,922 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:44:53,922 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 144
[2019-10-13 19:44:53,923 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:44:53,939 INFO  L225             Difference]: With dead ends: 5958
[2019-10-13 19:44:53,940 INFO  L226             Difference]: Without dead ends: 3026
[2019-10-13 19:44:53,981 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:44:53,985 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3026 states.
[2019-10-13 19:44:54,117 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3026 to 3024.
[2019-10-13 19:44:54,118 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3024 states.
[2019-10-13 19:44:54,128 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3024 states to 3024 states and 4395 transitions.
[2019-10-13 19:44:54,128 INFO  L78                 Accepts]: Start accepts. Automaton has 3024 states and 4395 transitions. Word has length 144
[2019-10-13 19:44:54,129 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:44:54,129 INFO  L462      AbstractCegarLoop]: Abstraction has 3024 states and 4395 transitions.
[2019-10-13 19:44:54,129 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 19:44:54,129 INFO  L276                IsEmpty]: Start isEmpty. Operand 3024 states and 4395 transitions.
[2019-10-13 19:44:54,135 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 145
[2019-10-13 19:44:54,136 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:44:54,136 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]
[2019-10-13 19:44:54,136 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:44:54,136 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:44:54,137 INFO  L82        PathProgramCache]: Analyzing trace with hash 2066844131, now seen corresponding path program 1 times
[2019-10-13 19:44:54,137 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:44:54,137 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296268177]
[2019-10-13 19:44:54,137 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:54,137 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:54,138 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:44:54,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:54,534 WARN  L191               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-10-13 19:44:54,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:54,573 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:44:54,574 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296268177]
[2019-10-13 19:44:54,574 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:44:54,574 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 19:44:54,575 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760720343]
[2019-10-13 19:44:54,576 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 19:44:54,576 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:44:54,576 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 19:44:54,577 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:44:54,577 INFO  L87              Difference]: Start difference. First operand 3024 states and 4395 transitions. Second operand 5 states.
[2019-10-13 19:44:56,740 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:44:56,740 INFO  L93              Difference]: Finished difference Result 8770 states and 12691 transitions.
[2019-10-13 19:44:56,745 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:44:56,746 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 144
[2019-10-13 19:44:56,746 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:44:56,773 INFO  L225             Difference]: With dead ends: 8770
[2019-10-13 19:44:56,773 INFO  L226             Difference]: Without dead ends: 5818
[2019-10-13 19:44:56,781 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
[2019-10-13 19:44:56,788 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5818 states.
[2019-10-13 19:44:57,007 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5818 to 5816.
[2019-10-13 19:44:57,007 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5816 states.
[2019-10-13 19:44:57,019 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 8339 transitions.
[2019-10-13 19:44:57,020 INFO  L78                 Accepts]: Start accepts. Automaton has 5816 states and 8339 transitions. Word has length 144
[2019-10-13 19:44:57,020 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:44:57,021 INFO  L462      AbstractCegarLoop]: Abstraction has 5816 states and 8339 transitions.
[2019-10-13 19:44:57,021 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 19:44:57,021 INFO  L276                IsEmpty]: Start isEmpty. Operand 5816 states and 8339 transitions.
[2019-10-13 19:44:57,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2019-10-13 19:44:57,030 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:44:57,031 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]
[2019-10-13 19:44:57,031 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:44:57,031 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:44:57,031 INFO  L82        PathProgramCache]: Analyzing trace with hash 1792011813, now seen corresponding path program 1 times
[2019-10-13 19:44:57,032 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:44:57,032 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682676919]
[2019-10-13 19:44:57,032 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:57,032 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:57,032 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:44:57,049 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:57,338 WARN  L191               SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-10-13 19:44:57,342 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:57,365 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:44:57,365 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682676919]
[2019-10-13 19:44:57,366 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:44:57,366 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:44:57,366 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733519881]
[2019-10-13 19:44:57,367 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:44:57,367 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:44:57,367 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:44:57,368 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:44:57,368 INFO  L87              Difference]: Start difference. First operand 5816 states and 8339 transitions. Second operand 4 states.
[2019-10-13 19:44:58,839 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:44:58,839 INFO  L93              Difference]: Finished difference Result 17254 states and 24713 transitions.
[2019-10-13 19:44:58,839 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-13 19:44:58,839 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 145
[2019-10-13 19:44:58,840 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:44:58,884 INFO  L225             Difference]: With dead ends: 17254
[2019-10-13 19:44:58,884 INFO  L226             Difference]: Without dead ends: 11554
[2019-10-13 19:44:58,895 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:44:58,907 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11554 states.
[2019-10-13 19:44:59,170 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11554 to 5828.
[2019-10-13 19:44:59,170 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5828 states.
[2019-10-13 19:44:59,180 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 8351 transitions.
[2019-10-13 19:44:59,180 INFO  L78                 Accepts]: Start accepts. Automaton has 5828 states and 8351 transitions. Word has length 145
[2019-10-13 19:44:59,180 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:44:59,181 INFO  L462      AbstractCegarLoop]: Abstraction has 5828 states and 8351 transitions.
[2019-10-13 19:44:59,181 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:44:59,181 INFO  L276                IsEmpty]: Start isEmpty. Operand 5828 states and 8351 transitions.
[2019-10-13 19:44:59,190 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2019-10-13 19:44:59,190 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:44:59,191 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]
[2019-10-13 19:44:59,191 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:44:59,192 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:44:59,192 INFO  L82        PathProgramCache]: Analyzing trace with hash 1919082916, now seen corresponding path program 1 times
[2019-10-13 19:44:59,192 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:44:59,192 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610971914]
[2019-10-13 19:44:59,193 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:59,193 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:44:59,193 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:44:59,283 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:59,570 WARN  L191               SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-10-13 19:44:59,574 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:44:59,607 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:44:59,608 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610971914]
[2019-10-13 19:44:59,608 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:44:59,608 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 19:44:59,608 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728974821]
[2019-10-13 19:44:59,609 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 19:44:59,609 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:44:59,609 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 19:44:59,610 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:44:59,610 INFO  L87              Difference]: Start difference. First operand 5828 states and 8351 transitions. Second operand 5 states.
[2019-10-13 19:45:01,796 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:01,797 INFO  L93              Difference]: Finished difference Result 15812 states and 22544 transitions.
[2019-10-13 19:45:01,797 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:45:01,797 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 146
[2019-10-13 19:45:01,798 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:01,824 INFO  L225             Difference]: With dead ends: 15812
[2019-10-13 19:45:01,825 INFO  L226             Difference]: Without dead ends: 10110
[2019-10-13 19:45:01,837 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-13 19:45:01,850 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10110 states.
[2019-10-13 19:45:02,306 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10110 to 10108.
[2019-10-13 19:45:02,306 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10108 states.
[2019-10-13 19:45:02,317 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14232 transitions.
[2019-10-13 19:45:02,317 INFO  L78                 Accepts]: Start accepts. Automaton has 10108 states and 14232 transitions. Word has length 146
[2019-10-13 19:45:02,317 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:02,318 INFO  L462      AbstractCegarLoop]: Abstraction has 10108 states and 14232 transitions.
[2019-10-13 19:45:02,318 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 19:45:02,318 INFO  L276                IsEmpty]: Start isEmpty. Operand 10108 states and 14232 transitions.
[2019-10-13 19:45:02,331 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2019-10-13 19:45:02,331 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:02,332 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, 1]
[2019-10-13 19:45:02,332 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:02,332 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:02,332 INFO  L82        PathProgramCache]: Analyzing trace with hash -754251552, now seen corresponding path program 1 times
[2019-10-13 19:45:02,333 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:02,333 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836693371]
[2019-10-13 19:45:02,333 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:02,333 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:02,334 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:02,393 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:02,640 WARN  L191               SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-10-13 19:45:02,644 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:02,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:45:02,679 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836693371]
[2019-10-13 19:45:02,679 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:02,680 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 19:45:02,680 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640902418]
[2019-10-13 19:45:02,680 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 19:45:02,681 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:02,681 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 19:45:02,681 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:45:02,681 INFO  L87              Difference]: Start difference. First operand 10108 states and 14232 transitions. Second operand 5 states.
[2019-10-13 19:45:05,326 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:05,326 INFO  L93              Difference]: Finished difference Result 28566 states and 40288 transitions.
[2019-10-13 19:45:05,327 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:45:05,327 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 148
[2019-10-13 19:45:05,327 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:05,358 INFO  L225             Difference]: With dead ends: 28566
[2019-10-13 19:45:05,358 INFO  L226             Difference]: Without dead ends: 18774
[2019-10-13 19:45:05,374 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
[2019-10-13 19:45:05,399 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18774 states.
[2019-10-13 19:45:06,040 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18774 to 18772.
[2019-10-13 19:45:06,040 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18772 states.
[2019-10-13 19:45:06,063 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18772 states to 18772 states and 26177 transitions.
[2019-10-13 19:45:06,064 INFO  L78                 Accepts]: Start accepts. Automaton has 18772 states and 26177 transitions. Word has length 148
[2019-10-13 19:45:06,064 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:06,064 INFO  L462      AbstractCegarLoop]: Abstraction has 18772 states and 26177 transitions.
[2019-10-13 19:45:06,064 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 19:45:06,064 INFO  L276                IsEmpty]: Start isEmpty. Operand 18772 states and 26177 transitions.
[2019-10-13 19:45:06,085 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 149
[2019-10-13 19:45:06,085 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:06,086 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, 1]
[2019-10-13 19:45:06,086 INFO  L410      AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:06,086 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:06,087 INFO  L82        PathProgramCache]: Analyzing trace with hash -1799575128, now seen corresponding path program 1 times
[2019-10-13 19:45:06,087 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:06,087 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463644837]
[2019-10-13 19:45:06,087 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:06,087 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:06,088 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:06,149 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:07,019 WARN  L191               SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 172
[2019-10-13 19:45:07,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:07,057 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:45:07,058 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463644837]
[2019-10-13 19:45:07,058 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:07,058 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 19:45:07,059 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340335605]
[2019-10-13 19:45:07,059 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 19:45:07,059 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:07,060 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 19:45:07,060 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:45:07,060 INFO  L87              Difference]: Start difference. First operand 18772 states and 26177 transitions. Second operand 5 states.