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-f4eb214f-m
[2019-10-13 19:45:09,982 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 19:45:09,986 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-10-13 19:45:10,005 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2019-10-13 19:45:10,033 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
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[2019-10-13 19:45:10,069 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 19:45:10,094 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 19:45:10,094 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 19:45:10,096 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 19:45:10,096 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 19:45:10,096 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 19:45:10,096 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 19:45:10,097 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 19:45:10,097 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 19:45:10,097 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 19:45:10,097 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 19:45:10,098 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 19:45:10,098 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 19:45:10,099 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 19:45:10,099 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 19:45:10,099 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 19:45:10,099 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 19:45:10,099 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 19:45:10,100 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 19:45:10,100 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 19:45:10,100 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 19:45:10,100 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 19:45:10,100 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 19:45:10,101 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 19:45:10,101 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 19:45:10,101 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 19:45:10,101 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 19:45:10,101 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 19:45:10,102 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 19:45:10,102 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 19:45:10,433 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 19:45:10,450 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 19:45:10,453 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 19:45:10,455 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 19:45:10,455 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 19:45:10,456 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2019-10-13 19:45:10,517 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8490eab4d/6e0a2b7079a54b80b29669fa4004952b/FLAG29c1fc803
[2019-10-13 19:45:11,060 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 19:45:11,062 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2019-10-13 19:45:11,086 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8490eab4d/6e0a2b7079a54b80b29669fa4004952b/FLAG29c1fc803
[2019-10-13 19:45:11,531 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8490eab4d/6e0a2b7079a54b80b29669fa4004952b
[2019-10-13 19:45:11,541 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 19:45:11,543 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 19:45:11,544 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 19:45:11,544 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 19:45:11,550 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 19:45:11,551 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:11" (1/1) ...
[2019-10-13 19:45:11,554 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4795ead6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:11, skipping insertion in model container
[2019-10-13 19:45:11,555 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:11" (1/1) ...
[2019-10-13 19:45:11,564 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 19:45:11,634 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 19:45:12,374 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 19:45:12,386 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 19:45:12,585 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 19:45:12,607 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 19:45:12,607 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12 WrapperNode
[2019-10-13 19:45:12,607 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 19:45:12,608 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 19:45:12,608 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 19:45:12,609 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 19:45:12,623 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12" (1/1) ...
[2019-10-13 19:45:12,623 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12" (1/1) ...
[2019-10-13 19:45:12,665 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12" (1/1) ...
[2019-10-13 19:45:12,665 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12" (1/1) ...
[2019-10-13 19:45:12,736 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12" (1/1) ...
[2019-10-13 19:45:12,779 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12" (1/1) ...
[2019-10-13 19:45:12,793 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12" (1/1) ...
[2019-10-13 19:45:12,811 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 19:45:12,812 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 19:45:12,815 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 19:45:12,816 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 19:45:12,817 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12" (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 19:45:12,906 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 19:45:12,907 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 19:45:12,907 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 19:45:12,907 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 19:45:12,908 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2019-10-13 19:45:12,909 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2019-10-13 19:45:12,909 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2019-10-13 19:45:12,909 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-10-13 19:45:12,909 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2019-10-13 19:45:12,909 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2019-10-13 19:45:12,910 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2019-10-13 19:45:12,910 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2019-10-13 19:45:12,911 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2019-10-13 19:45:12,911 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2019-10-13 19:45:12,912 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2019-10-13 19:45:12,912 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 19:45:12,914 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 19:45:12,914 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 19:45:14,729 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 19:45:14,730 INFO  L284             CfgBuilder]: Removed 0 assume(true) statements.
[2019-10-13 19:45:14,731 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:14 BoogieIcfgContainer
[2019-10-13 19:45:14,732 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 19:45:14,735 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 19:45:14,735 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 19:45:14,739 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 19:45:14,739 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:11" (1/3) ...
[2019-10-13 19:45:14,740 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111df019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:14, skipping insertion in model container
[2019-10-13 19:45:14,740 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:12" (2/3) ...
[2019-10-13 19:45:14,742 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@111df019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:14, skipping insertion in model container
[2019-10-13 19:45:14,742 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:14" (3/3) ...
[2019-10-13 19:45:14,749 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c
[2019-10-13 19:45:14,763 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 19:45:14,790 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations.
[2019-10-13 19:45:14,808 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2019-10-13 19:45:14,855 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 19:45:14,855 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 19:45:14,855 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 19:45:14,856 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 19:45:14,856 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 19:45:14,856 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 19:45:14,856 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 19:45:14,857 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 19:45:14,896 INFO  L276                IsEmpty]: Start isEmpty. Operand 371 states.
[2019-10-13 19:45:14,913 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2019-10-13 19:45:14,913 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:14,915 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]
[2019-10-13 19:45:14,917 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:14,923 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:14,924 INFO  L82        PathProgramCache]: Analyzing trace with hash -737000611, now seen corresponding path program 1 times
[2019-10-13 19:45:14,936 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:14,936 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225619430]
[2019-10-13 19:45:14,937 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:14,937 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:14,937 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:15,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:15,981 WARN  L191               SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-13 19:45:15,996 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:16,079 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 19:45:16,080 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225619430]
[2019-10-13 19:45:16,081 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:16,081 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:45:16,082 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168279494]
[2019-10-13 19:45:16,087 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:45:16,087 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:16,102 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:45:16,103 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:16,106 INFO  L87              Difference]: Start difference. First operand 371 states. Second operand 4 states.
[2019-10-13 19:45:16,500 WARN  L191               SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2019-10-13 19:45:18,962 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:18,963 INFO  L93              Difference]: Finished difference Result 667 states and 1188 transitions.
[2019-10-13 19:45:18,963 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:45:18,965 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 140
[2019-10-13 19:45:18,966 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:18,985 INFO  L225             Difference]: With dead ends: 667
[2019-10-13 19:45:18,986 INFO  L226             Difference]: Without dead ends: 520
[2019-10-13 19:45:18,990 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
[2019-10-13 19:45:19,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 520 states.
[2019-10-13 19:45:19,082 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 518.
[2019-10-13 19:45:19,084 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 518 states.
[2019-10-13 19:45:19,086 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 755 transitions.
[2019-10-13 19:45:19,090 INFO  L78                 Accepts]: Start accepts. Automaton has 518 states and 755 transitions. Word has length 140
[2019-10-13 19:45:19,091 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:19,091 INFO  L462      AbstractCegarLoop]: Abstraction has 518 states and 755 transitions.
[2019-10-13 19:45:19,091 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:45:19,092 INFO  L276                IsEmpty]: Start isEmpty. Operand 518 states and 755 transitions.
[2019-10-13 19:45:19,096 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2019-10-13 19:45:19,097 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:19,097 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]
[2019-10-13 19:45:19,097 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:19,098 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:19,098 INFO  L82        PathProgramCache]: Analyzing trace with hash 1264797844, now seen corresponding path program 1 times
[2019-10-13 19:45:19,103 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:19,104 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537685010]
[2019-10-13 19:45:19,104 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:19,104 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:19,104 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:19,203 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:19,573 WARN  L191               SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-13 19:45:19,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:19,640 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 19:45:19,641 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537685010]
[2019-10-13 19:45:19,641 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:19,642 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:45:19,642 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660434940]
[2019-10-13 19:45:19,643 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:45:19,644 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:19,644 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:45:19,644 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:19,645 INFO  L87              Difference]: Start difference. First operand 518 states and 755 transitions. Second operand 4 states.
[2019-10-13 19:45:19,913 WARN  L191               SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2019-10-13 19:45:21,812 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:21,812 INFO  L93              Difference]: Finished difference Result 1029 states and 1554 transitions.
[2019-10-13 19:45:21,813 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:45:21,813 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 140
[2019-10-13 19:45:21,814 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:21,821 INFO  L225             Difference]: With dead ends: 1029
[2019-10-13 19:45:21,821 INFO  L226             Difference]: Without dead ends: 824
[2019-10-13 19:45:21,824 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 19:45:21,826 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 824 states.
[2019-10-13 19:45:21,875 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 822.
[2019-10-13 19:45:21,875 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 822 states.
[2019-10-13 19:45:21,879 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1219 transitions.
[2019-10-13 19:45:21,879 INFO  L78                 Accepts]: Start accepts. Automaton has 822 states and 1219 transitions. Word has length 140
[2019-10-13 19:45:21,880 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:21,880 INFO  L462      AbstractCegarLoop]: Abstraction has 822 states and 1219 transitions.
[2019-10-13 19:45:21,880 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:45:21,881 INFO  L276                IsEmpty]: Start isEmpty. Operand 822 states and 1219 transitions.
[2019-10-13 19:45:21,884 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2019-10-13 19:45:21,884 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:21,884 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]
[2019-10-13 19:45:21,885 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:21,885 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:21,885 INFO  L82        PathProgramCache]: Analyzing trace with hash -1075415587, now seen corresponding path program 1 times
[2019-10-13 19:45:21,885 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:21,886 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139017355]
[2019-10-13 19:45:21,886 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:21,886 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:21,886 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:21,920 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:22,211 WARN  L191               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-13 19:45:22,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:22,282 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 19:45:22,283 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139017355]
[2019-10-13 19:45:22,284 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:22,290 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:45:22,290 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813281463]
[2019-10-13 19:45:22,291 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:45:22,291 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:22,292 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:45:22,292 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:22,292 INFO  L87              Difference]: Start difference. First operand 822 states and 1219 transitions. Second operand 4 states.
[2019-10-13 19:45:22,589 WARN  L191               SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 194
[2019-10-13 19:45:24,511 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:24,511 INFO  L93              Difference]: Finished difference Result 1781 states and 2727 transitions.
[2019-10-13 19:45:24,511 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:45:24,512 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 140
[2019-10-13 19:45:24,514 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:24,523 INFO  L225             Difference]: With dead ends: 1781
[2019-10-13 19:45:24,523 INFO  L226             Difference]: Without dead ends: 1436
[2019-10-13 19:45:24,529 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
[2019-10-13 19:45:24,532 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1436 states.
[2019-10-13 19:45:24,591 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 1434.
[2019-10-13 19:45:24,592 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1434 states.
[2019-10-13 19:45:24,599 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2151 transitions.
[2019-10-13 19:45:24,600 INFO  L78                 Accepts]: Start accepts. Automaton has 1434 states and 2151 transitions. Word has length 140
[2019-10-13 19:45:24,601 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:24,601 INFO  L462      AbstractCegarLoop]: Abstraction has 1434 states and 2151 transitions.
[2019-10-13 19:45:24,601 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:45:24,601 INFO  L276                IsEmpty]: Start isEmpty. Operand 1434 states and 2151 transitions.
[2019-10-13 19:45:24,608 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2019-10-13 19:45:24,608 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:24,609 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]
[2019-10-13 19:45:24,609 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:24,609 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:24,610 INFO  L82        PathProgramCache]: Analyzing trace with hash -1075754211, now seen corresponding path program 1 times
[2019-10-13 19:45:24,610 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:24,610 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588544689]
[2019-10-13 19:45:24,610 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:24,610 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:24,611 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:24,849 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:25,293 WARN  L191               SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-13 19:45:25,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:25,371 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 19:45:25,372 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588544689]
[2019-10-13 19:45:25,372 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:25,372 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 19:45:25,373 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121483679]
[2019-10-13 19:45:25,375 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 19:45:25,375 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:25,376 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 19:45:25,376 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:45:25,376 INFO  L87              Difference]: Start difference. First operand 1434 states and 2151 transitions. Second operand 5 states.
[2019-10-13 19:45:28,588 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:28,589 INFO  L93              Difference]: Finished difference Result 4221 states and 6322 transitions.
[2019-10-13 19:45:28,589 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:45:28,589 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 140
[2019-10-13 19:45:28,590 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:28,610 INFO  L225             Difference]: With dead ends: 4221
[2019-10-13 19:45:28,610 INFO  L226             Difference]: Without dead ends: 2800
[2019-10-13 19:45:28,615 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
[2019-10-13 19:45:28,621 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2800 states.
[2019-10-13 19:45:28,753 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2800 to 2760.
[2019-10-13 19:45:28,754 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2760 states.
[2019-10-13 19:45:28,768 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 4117 transitions.
[2019-10-13 19:45:28,769 INFO  L78                 Accepts]: Start accepts. Automaton has 2760 states and 4117 transitions. Word has length 140
[2019-10-13 19:45:28,769 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:28,769 INFO  L462      AbstractCegarLoop]: Abstraction has 2760 states and 4117 transitions.
[2019-10-13 19:45:28,769 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 19:45:28,769 INFO  L276                IsEmpty]: Start isEmpty. Operand 2760 states and 4117 transitions.
[2019-10-13 19:45:28,776 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2019-10-13 19:45:28,776 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:28,777 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]
[2019-10-13 19:45:28,777 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:28,778 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:28,778 INFO  L82        PathProgramCache]: Analyzing trace with hash -127121487, now seen corresponding path program 1 times
[2019-10-13 19:45:28,780 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:28,781 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138403517]
[2019-10-13 19:45:28,781 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:28,781 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:28,782 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:28,821 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:29,129 WARN  L191               SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-13 19:45:29,133 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:29,159 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 19:45:29,160 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138403517]
[2019-10-13 19:45:29,160 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:29,160 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:45:29,160 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382702016]
[2019-10-13 19:45:29,161 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:45:29,161 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:29,161 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:45:29,162 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:29,162 INFO  L87              Difference]: Start difference. First operand 2760 states and 4117 transitions. Second operand 4 states.
[2019-10-13 19:45:30,923 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:30,925 INFO  L93              Difference]: Finished difference Result 8234 states and 12281 transitions.
[2019-10-13 19:45:30,926 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-13 19:45:30,926 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 141
[2019-10-13 19:45:30,926 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:30,953 INFO  L225             Difference]: With dead ends: 8234
[2019-10-13 19:45:30,953 INFO  L226             Difference]: Without dead ends: 5506
[2019-10-13 19:45:30,960 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 19:45:30,967 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5506 states.
[2019-10-13 19:45:31,102 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5506 to 2762.
[2019-10-13 19:45:31,103 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2762 states.
[2019-10-13 19:45:31,112 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4119 transitions.
[2019-10-13 19:45:31,112 INFO  L78                 Accepts]: Start accepts. Automaton has 2762 states and 4119 transitions. Word has length 141
[2019-10-13 19:45:31,112 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:31,113 INFO  L462      AbstractCegarLoop]: Abstraction has 2762 states and 4119 transitions.
[2019-10-13 19:45:31,113 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:45:31,113 INFO  L276                IsEmpty]: Start isEmpty. Operand 2762 states and 4119 transitions.
[2019-10-13 19:45:31,118 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2019-10-13 19:45:31,119 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:31,119 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 19:45:31,120 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:31,120 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:31,120 INFO  L82        PathProgramCache]: Analyzing trace with hash -1322555170, now seen corresponding path program 1 times
[2019-10-13 19:45:31,120 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:31,121 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443357904]
[2019-10-13 19:45:31,121 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:31,121 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:31,121 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:31,234 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:31,563 WARN  L191               SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-13 19:45:31,569 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:31,653 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 19:45:31,653 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443357904]
[2019-10-13 19:45:31,655 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:31,661 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 19:45:31,661 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767365990]
[2019-10-13 19:45:31,661 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 19:45:31,662 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:31,662 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 19:45:31,664 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:45:31,664 INFO  L87              Difference]: Start difference. First operand 2762 states and 4119 transitions. Second operand 5 states.
[2019-10-13 19:45:33,206 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:33,207 INFO  L93              Difference]: Finished difference Result 5510 states and 8220 transitions.
[2019-10-13 19:45:33,207 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:45:33,209 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 142
[2019-10-13 19:45:33,209 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:33,225 INFO  L225             Difference]: With dead ends: 5510
[2019-10-13 19:45:33,226 INFO  L226             Difference]: Without dead ends: 2760
[2019-10-13 19:45:33,232 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 19:45:33,235 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2760 states.
[2019-10-13 19:45:33,327 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2760 to 2760.
[2019-10-13 19:45:33,328 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2760 states.
[2019-10-13 19:45:33,340 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2760 states to 2760 states and 4115 transitions.
[2019-10-13 19:45:33,341 INFO  L78                 Accepts]: Start accepts. Automaton has 2760 states and 4115 transitions. Word has length 142
[2019-10-13 19:45:33,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:33,341 INFO  L462      AbstractCegarLoop]: Abstraction has 2760 states and 4115 transitions.
[2019-10-13 19:45:33,341 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 19:45:33,342 INFO  L276                IsEmpty]: Start isEmpty. Operand 2760 states and 4115 transitions.
[2019-10-13 19:45:33,346 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2019-10-13 19:45:33,346 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:33,346 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 19:45:33,346 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:33,347 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:33,347 INFO  L82        PathProgramCache]: Analyzing trace with hash -82288669, now seen corresponding path program 1 times
[2019-10-13 19:45:33,347 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:33,347 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311179610]
[2019-10-13 19:45:33,347 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:33,348 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:33,348 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:33,378 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:33,698 WARN  L191               SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-13 19:45:33,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:33,736 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 19:45:33,737 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311179610]
[2019-10-13 19:45:33,737 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:33,737 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:45:33,737 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809773725]
[2019-10-13 19:45:33,738 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:45:33,738 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:33,738 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:45:33,739 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:33,739 INFO  L87              Difference]: Start difference. First operand 2760 states and 4115 transitions. Second operand 4 states.
[2019-10-13 19:45:36,379 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:36,379 INFO  L93              Difference]: Finished difference Result 6674 states and 9953 transitions.
[2019-10-13 19:45:36,380 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-13 19:45:36,381 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 142
[2019-10-13 19:45:36,382 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:36,400 INFO  L225             Difference]: With dead ends: 6674
[2019-10-13 19:45:36,400 INFO  L226             Difference]: Without dead ends: 4094
[2019-10-13 19:45:36,406 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 19:45:36,411 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4094 states.
[2019-10-13 19:45:36,557 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4094 to 4054.
[2019-10-13 19:45:36,557 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4054 states.
[2019-10-13 19:45:36,568 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 5963 transitions.
[2019-10-13 19:45:36,569 INFO  L78                 Accepts]: Start accepts. Automaton has 4054 states and 5963 transitions. Word has length 142
[2019-10-13 19:45:36,570 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:36,570 INFO  L462      AbstractCegarLoop]: Abstraction has 4054 states and 5963 transitions.
[2019-10-13 19:45:36,570 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:45:36,570 INFO  L276                IsEmpty]: Start isEmpty. Operand 4054 states and 5963 transitions.
[2019-10-13 19:45:36,579 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2019-10-13 19:45:36,579 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:36,580 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 19:45:36,580 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:36,580 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:36,581 INFO  L82        PathProgramCache]: Analyzing trace with hash 1177772960, now seen corresponding path program 1 times
[2019-10-13 19:45:36,581 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:36,582 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002131781]
[2019-10-13 19:45:36,582 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:36,582 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:36,582 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:36,648 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:36,997 WARN  L191               SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-13 19:45:37,005 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:37,049 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 19:45:37,049 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002131781]
[2019-10-13 19:45:37,050 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:37,050 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 19:45:37,050 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563861655]
[2019-10-13 19:45:37,051 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 19:45:37,051 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:37,051 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 19:45:37,051 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2019-10-13 19:45:37,051 INFO  L87              Difference]: Start difference. First operand 4054 states and 5963 transitions. Second operand 9 states.
[2019-10-13 19:45:37,364 WARN  L191               SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 199
[2019-10-13 19:45:39,897 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:39,897 INFO  L93              Difference]: Finished difference Result 13639 states and 20990 transitions.
[2019-10-13 19:45:39,898 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2019-10-13 19:45:39,898 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 145
[2019-10-13 19:45:39,898 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:39,942 INFO  L225             Difference]: With dead ends: 13639
[2019-10-13 19:45:39,942 INFO  L226             Difference]: Without dead ends: 9790
[2019-10-13 19:45:39,949 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342
[2019-10-13 19:45:39,959 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9790 states.
[2019-10-13 19:45:40,238 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9790 to 5376.
[2019-10-13 19:45:40,238 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5376 states.
[2019-10-13 19:45:40,247 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 7951 transitions.
[2019-10-13 19:45:40,247 INFO  L78                 Accepts]: Start accepts. Automaton has 5376 states and 7951 transitions. Word has length 145
[2019-10-13 19:45:40,248 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:40,248 INFO  L462      AbstractCegarLoop]: Abstraction has 5376 states and 7951 transitions.
[2019-10-13 19:45:40,248 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 19:45:40,248 INFO  L276                IsEmpty]: Start isEmpty. Operand 5376 states and 7951 transitions.
[2019-10-13 19:45:40,254 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2019-10-13 19:45:40,254 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:40,254 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 19:45:40,254 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:40,255 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:40,255 INFO  L82        PathProgramCache]: Analyzing trace with hash -142350002, now seen corresponding path program 1 times
[2019-10-13 19:45:40,255 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:40,255 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676030204]
[2019-10-13 19:45:40,255 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:40,256 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:40,256 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:40,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:40,769 WARN  L191               SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-13 19:45:40,773 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:40,808 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 19:45:40,809 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676030204]
[2019-10-13 19:45:40,809 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:40,809 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 19:45:40,809 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369459995]
[2019-10-13 19:45:40,810 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 19:45:40,813 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:40,813 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 19:45:40,813 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:45:40,813 INFO  L87              Difference]: Start difference. First operand 5376 states and 7951 transitions. Second operand 5 states.
[2019-10-13 19:45:43,459 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:43,460 INFO  L93              Difference]: Finished difference Result 14463 states and 21402 transitions.
[2019-10-13 19:45:43,462 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:45:43,462 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 145
[2019-10-13 19:45:43,462 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:43,482 INFO  L225             Difference]: With dead ends: 14463
[2019-10-13 19:45:43,482 INFO  L226             Difference]: Without dead ends: 9110
[2019-10-13 19:45:43,494 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
[2019-10-13 19:45:43,504 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9110 states.
[2019-10-13 19:45:43,968 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9110 to 9080.
[2019-10-13 19:45:43,969 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 9080 states.
[2019-10-13 19:45:43,979 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9080 states to 9080 states and 13336 transitions.
[2019-10-13 19:45:43,979 INFO  L78                 Accepts]: Start accepts. Automaton has 9080 states and 13336 transitions. Word has length 145
[2019-10-13 19:45:43,980 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:43,980 INFO  L462      AbstractCegarLoop]: Abstraction has 9080 states and 13336 transitions.
[2019-10-13 19:45:43,980 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 19:45:43,980 INFO  L276                IsEmpty]: Start isEmpty. Operand 9080 states and 13336 transitions.
[2019-10-13 19:45:43,988 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2019-10-13 19:45:43,989 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:43,989 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]
[2019-10-13 19:45:43,989 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:43,989 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:43,990 INFO  L82        PathProgramCache]: Analyzing trace with hash -140462378, now seen corresponding path program 1 times
[2019-10-13 19:45:43,990 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:43,990 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228302431]
[2019-10-13 19:45:43,990 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:43,990 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:43,990 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:44,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:44,293 WARN  L191               SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 193
[2019-10-13 19:45:44,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:44,334 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 19:45:44,334 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228302431]
[2019-10-13 19:45:44,334 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:44,335 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:45:44,335 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573693712]
[2019-10-13 19:45:44,335 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:45:44,336 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:44,336 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:45:44,336 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:44,336 INFO  L87              Difference]: Start difference. First operand 9080 states and 13336 transitions. Second operand 4 states.