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.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c


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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 19:45:06,162 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 19:45:06,164 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2019-10-13 19:45:06,191 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 19:45:06,193 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2019-10-13 19:45:06,214 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 19:45:06,230 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 19:45:06,230 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 19:45:06,231 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 19:45:06,232 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 19:45:06,232 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 19:45:06,232 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 19:45:06,232 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 19:45:06,232 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 19:45:06,233 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 19:45:06,233 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 19:45:06,233 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 19:45:06,233 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 19:45:06,233 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 19:45:06,234 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 19:45:06,234 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 19:45:06,234 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 19:45:06,234 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 19:45:06,234 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 19:45:06,235 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 19:45:06,235 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 19:45:06,235 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 19:45:06,235 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 19:45:06,236 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 19:45:06,236 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 19:45:06,236 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 19:45:06,236 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 19:45:06,236 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 19:45:06,237 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 19:45:06,237 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-10-13 19:45:06,554 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 19:45:06,571 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 19:45:06,575 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 19:45:06,576 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 19:45:06,577 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 19:45:06,578 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2019-10-13 19:45:06,644 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad8e236d/92954aee90b1439aa6d910af895db193/FLAG061b021a5
[2019-10-13 19:45:07,243 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 19:45:07,245 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2019-10-13 19:45:07,262 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad8e236d/92954aee90b1439aa6d910af895db193/FLAG061b021a5
[2019-10-13 19:45:07,524 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad8e236d/92954aee90b1439aa6d910af895db193
[2019-10-13 19:45:07,535 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 19:45:07,536 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 19:45:07,537 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 19:45:07,538 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 19:45:07,541 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 19:45:07,542 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:07" (1/1) ...
[2019-10-13 19:45:07,545 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36eec1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:07, skipping insertion in model container
[2019-10-13 19:45:07,545 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:07" (1/1) ...
[2019-10-13 19:45:07,552 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 19:45:07,604 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 19:45:08,131 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 19:45:08,153 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 19:45:08,315 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 19:45:08,336 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 19:45:08,336 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08 WrapperNode
[2019-10-13 19:45:08,336 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 19:45:08,338 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 19:45:08,338 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 19:45:08,338 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 19:45:08,348 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ...
[2019-10-13 19:45:08,349 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ...
[2019-10-13 19:45:08,370 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ...
[2019-10-13 19:45:08,370 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ...
[2019-10-13 19:45:08,423 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ...
[2019-10-13 19:45:08,441 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ...
[2019-10-13 19:45:08,456 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ...
[2019-10-13 19:45:08,472 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 19:45:08,472 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 19:45:08,473 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 19:45:08,473 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 19:45:08,479 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (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 19:45:08,564 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 19:45:08,564 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 19:45:08,565 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 19:45:08,565 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 19:45:08,565 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char
[2019-10-13 19:45:08,566 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar
[2019-10-13 19:45:08,567 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool
[2019-10-13 19:45:08,567 INFO  L130     BoogieDeclarations]: Found specification of procedure assert
[2019-10-13 19:45:08,568 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assume
[2019-10-13 19:45:08,568 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2019-10-13 19:45:08,568 INFO  L130     BoogieDeclarations]: Found specification of procedure write
[2019-10-13 19:45:08,569 INFO  L130     BoogieDeclarations]: Found specification of procedure node1
[2019-10-13 19:45:08,569 INFO  L130     BoogieDeclarations]: Found specification of procedure node2
[2019-10-13 19:45:08,570 INFO  L130     BoogieDeclarations]: Found specification of procedure node3
[2019-10-13 19:45:08,570 INFO  L130     BoogieDeclarations]: Found specification of procedure init
[2019-10-13 19:45:08,571 INFO  L130     BoogieDeclarations]: Found specification of procedure check
[2019-10-13 19:45:08,573 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 19:45:08,573 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 19:45:08,573 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 19:45:10,076 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 19:45:10,077 INFO  L284             CfgBuilder]: Removed 0 assume(true) statements.
[2019-10-13 19:45:10,078 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:10 BoogieIcfgContainer
[2019-10-13 19:45:10,078 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 19:45:10,080 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 19:45:10,080 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 19:45:10,083 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 19:45:10,084 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:07" (1/3) ...
[2019-10-13 19:45:10,085 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9127ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:10, skipping insertion in model container
[2019-10-13 19:45:10,085 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (2/3) ...
[2019-10-13 19:45:10,085 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9127ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:10, skipping insertion in model container
[2019-10-13 19:45:10,086 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:10" (3/3) ...
[2019-10-13 19:45:10,087 INFO  L109   eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c
[2019-10-13 19:45:10,098 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 19:45:10,115 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 19:45:10,126 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 19:45:10,157 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 19:45:10,158 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 19:45:10,158 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 19:45:10,158 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 19:45:10,158 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 19:45:10,158 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 19:45:10,158 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 19:45:10,158 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 19:45:10,186 INFO  L276                IsEmpty]: Start isEmpty. Operand 317 states.
[2019-10-13 19:45:10,203 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2019-10-13 19:45:10,203 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:10,205 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, 1, 1]
[2019-10-13 19:45:10,207 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:10,212 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:10,213 INFO  L82        PathProgramCache]: Analyzing trace with hash 885340602, now seen corresponding path program 1 times
[2019-10-13 19:45:10,221 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:10,221 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30327509]
[2019-10-13 19:45:10,221 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:10,222 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:10,222 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:10,507 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:11,097 WARN  L191               SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-10-13 19:45:11,104 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:11,158 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 19:45:11,159 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30327509]
[2019-10-13 19:45:11,160 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:11,160 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:45:11,161 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247387743]
[2019-10-13 19:45:11,167 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:45:11,167 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:11,183 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:45:11,184 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:11,187 INFO  L87              Difference]: Start difference. First operand 317 states. Second operand 4 states.
[2019-10-13 19:45:11,525 WARN  L191               SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 167
[2019-10-13 19:45:13,119 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:13,119 INFO  L93              Difference]: Finished difference Result 641 states and 1120 transitions.
[2019-10-13 19:45:13,120 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:45:13,121 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 150
[2019-10-13 19:45:13,123 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:13,142 INFO  L225             Difference]: With dead ends: 641
[2019-10-13 19:45:13,142 INFO  L226             Difference]: Without dead ends: 514
[2019-10-13 19:45:13,147 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 19:45:13,166 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 514 states.
[2019-10-13 19:45:13,231 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 512.
[2019-10-13 19:45:13,232 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 512 states.
[2019-10-13 19:45:13,235 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 761 transitions.
[2019-10-13 19:45:13,237 INFO  L78                 Accepts]: Start accepts. Automaton has 512 states and 761 transitions. Word has length 150
[2019-10-13 19:45:13,238 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:13,238 INFO  L462      AbstractCegarLoop]: Abstraction has 512 states and 761 transitions.
[2019-10-13 19:45:13,238 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:45:13,239 INFO  L276                IsEmpty]: Start isEmpty. Operand 512 states and 761 transitions.
[2019-10-13 19:45:13,243 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2019-10-13 19:45:13,243 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:13,243 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, 1, 1]
[2019-10-13 19:45:13,244 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:13,244 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:13,244 INFO  L82        PathProgramCache]: Analyzing trace with hash -20093490, now seen corresponding path program 1 times
[2019-10-13 19:45:13,245 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:13,245 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001575940]
[2019-10-13 19:45:13,245 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:13,245 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:13,245 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:13,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:13,602 WARN  L191               SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-10-13 19:45:13,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:13,691 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 19:45:13,692 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001575940]
[2019-10-13 19:45:13,692 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:13,693 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:45:13,693 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330948373]
[2019-10-13 19:45:13,696 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:45:13,696 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:13,697 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:45:13,697 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:13,697 INFO  L87              Difference]: Start difference. First operand 512 states and 761 transitions. Second operand 4 states.
[2019-10-13 19:45:13,918 WARN  L191               SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 167
[2019-10-13 19:45:15,154 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:15,154 INFO  L93              Difference]: Finished difference Result 1076 states and 1646 transitions.
[2019-10-13 19:45:15,155 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:45:15,155 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 150
[2019-10-13 19:45:15,156 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:15,162 INFO  L225             Difference]: With dead ends: 1076
[2019-10-13 19:45:15,162 INFO  L226             Difference]: Without dead ends: 884
[2019-10-13 19:45:15,165 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 19:45:15,166 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 884 states.
[2019-10-13 19:45:15,233 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 882.
[2019-10-13 19:45:15,233 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 882 states.
[2019-10-13 19:45:15,238 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1323 transitions.
[2019-10-13 19:45:15,238 INFO  L78                 Accepts]: Start accepts. Automaton has 882 states and 1323 transitions. Word has length 150
[2019-10-13 19:45:15,240 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:15,241 INFO  L462      AbstractCegarLoop]: Abstraction has 882 states and 1323 transitions.
[2019-10-13 19:45:15,241 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:45:15,241 INFO  L276                IsEmpty]: Start isEmpty. Operand 882 states and 1323 transitions.
[2019-10-13 19:45:15,247 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2019-10-13 19:45:15,248 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:15,248 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, 1, 1]
[2019-10-13 19:45:15,249 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:15,249 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:15,249 INFO  L82        PathProgramCache]: Analyzing trace with hash 1175617460, now seen corresponding path program 1 times
[2019-10-13 19:45:15,249 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:15,250 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923905613]
[2019-10-13 19:45:15,250 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:15,250 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:15,250 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:15,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:15,812 WARN  L191               SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-10-13 19:45:15,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:15,860 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 19:45:15,860 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923905613]
[2019-10-13 19:45:15,861 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:15,861 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 19:45:15,861 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582578374]
[2019-10-13 19:45:15,862 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 19:45:15,863 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:15,863 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 19:45:15,864 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:45:15,864 INFO  L87              Difference]: Start difference. First operand 882 states and 1323 transitions. Second operand 5 states.
[2019-10-13 19:45:18,183 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:18,184 INFO  L93              Difference]: Finished difference Result 2577 states and 3862 transitions.
[2019-10-13 19:45:18,184 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:45:18,184 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 150
[2019-10-13 19:45:18,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:18,194 INFO  L225             Difference]: With dead ends: 2577
[2019-10-13 19:45:18,194 INFO  L226             Difference]: Without dead ends: 1708
[2019-10-13 19:45:18,198 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 19:45:18,200 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1708 states.
[2019-10-13 19:45:18,264 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1706.
[2019-10-13 19:45:18,265 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1706 states.
[2019-10-13 19:45:18,275 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2536 transitions.
[2019-10-13 19:45:18,275 INFO  L78                 Accepts]: Start accepts. Automaton has 1706 states and 2536 transitions. Word has length 150
[2019-10-13 19:45:18,276 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:18,276 INFO  L462      AbstractCegarLoop]: Abstraction has 1706 states and 2536 transitions.
[2019-10-13 19:45:18,276 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 19:45:18,276 INFO  L276                IsEmpty]: Start isEmpty. Operand 1706 states and 2536 transitions.
[2019-10-13 19:45:18,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 152
[2019-10-13 19:45:18,283 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:18,283 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, 1, 1, 1]
[2019-10-13 19:45:18,284 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:18,284 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:18,284 INFO  L82        PathProgramCache]: Analyzing trace with hash -522806920, now seen corresponding path program 1 times
[2019-10-13 19:45:18,285 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:18,285 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782170391]
[2019-10-13 19:45:18,285 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:18,286 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:18,286 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:18,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:18,663 WARN  L191               SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-10-13 19:45:18,669 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:18,719 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 19:45:18,719 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782170391]
[2019-10-13 19:45:18,720 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:18,720 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:45:18,721 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769812018]
[2019-10-13 19:45:18,721 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:45:18,722 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:18,722 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:45:18,722 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:18,723 INFO  L87              Difference]: Start difference. First operand 1706 states and 2536 transitions. Second operand 4 states.
[2019-10-13 19:45:21,852 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:21,852 INFO  L93              Difference]: Finished difference Result 5072 states and 7538 transitions.
[2019-10-13 19:45:21,853 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-13 19:45:21,853 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 151
[2019-10-13 19:45:21,853 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:21,872 INFO  L225             Difference]: With dead ends: 5072
[2019-10-13 19:45:21,872 INFO  L226             Difference]: Without dead ends: 3398
[2019-10-13 19:45:21,877 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:21,882 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3398 states.
[2019-10-13 19:45:22,000 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 1708.
[2019-10-13 19:45:22,000 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1708 states.
[2019-10-13 19:45:22,012 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2538 transitions.
[2019-10-13 19:45:22,012 INFO  L78                 Accepts]: Start accepts. Automaton has 1708 states and 2538 transitions. Word has length 151
[2019-10-13 19:45:22,013 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:22,013 INFO  L462      AbstractCegarLoop]: Abstraction has 1708 states and 2538 transitions.
[2019-10-13 19:45:22,013 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:45:22,013 INFO  L276                IsEmpty]: Start isEmpty. Operand 1708 states and 2538 transitions.
[2019-10-13 19:45:22,019 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2019-10-13 19:45:22,019 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:22,020 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, 1, 1, 1, 1]
[2019-10-13 19:45:22,020 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:22,020 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:22,021 INFO  L82        PathProgramCache]: Analyzing trace with hash -1124709406, now seen corresponding path program 1 times
[2019-10-13 19:45:22,021 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:22,023 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284835142]
[2019-10-13 19:45:22,024 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:22,024 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:22,025 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:22,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:22,466 WARN  L191               SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-10-13 19:45:22,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:22,540 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 19:45:22,541 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284835142]
[2019-10-13 19:45:22,542 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:22,542 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:45:22,542 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622436168]
[2019-10-13 19:45:22,543 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:45:22,543 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:22,543 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:45:22,544 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:22,544 INFO  L87              Difference]: Start difference. First operand 1708 states and 2538 transitions. Second operand 4 states.
[2019-10-13 19:45:25,082 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:25,083 INFO  L93              Difference]: Finished difference Result 4838 states and 7205 transitions.
[2019-10-13 19:45:25,083 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-13 19:45:25,083 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 152
[2019-10-13 19:45:25,084 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:25,100 INFO  L225             Difference]: With dead ends: 4838
[2019-10-13 19:45:25,100 INFO  L226             Difference]: Without dead ends: 3310
[2019-10-13 19:45:25,104 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 19:45:25,108 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3310 states.
[2019-10-13 19:45:25,256 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3308.
[2019-10-13 19:45:25,256 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3308 states.
[2019-10-13 19:45:25,268 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 4871 transitions.
[2019-10-13 19:45:25,268 INFO  L78                 Accepts]: Start accepts. Automaton has 3308 states and 4871 transitions. Word has length 152
[2019-10-13 19:45:25,269 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:25,269 INFO  L462      AbstractCegarLoop]: Abstraction has 3308 states and 4871 transitions.
[2019-10-13 19:45:25,269 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:45:25,269 INFO  L276                IsEmpty]: Start isEmpty. Operand 3308 states and 4871 transitions.
[2019-10-13 19:45:25,275 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2019-10-13 19:45:25,275 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:25,275 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, 1, 1, 1, 1]
[2019-10-13 19:45:25,276 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:25,276 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:25,276 INFO  L82        PathProgramCache]: Analyzing trace with hash -617278081, now seen corresponding path program 1 times
[2019-10-13 19:45:25,276 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:25,277 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815379827]
[2019-10-13 19:45:25,277 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:25,277 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:25,277 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:25,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:25,634 WARN  L191               SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-10-13 19:45:25,638 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:25,670 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 19:45:25,670 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815379827]
[2019-10-13 19:45:25,671 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:25,671 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 19:45:25,671 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234030512]
[2019-10-13 19:45:25,672 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 19:45:25,672 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:25,672 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 19:45:25,672 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:45:25,673 INFO  L87              Difference]: Start difference. First operand 3308 states and 4871 transitions. Second operand 5 states.
[2019-10-13 19:45:27,080 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:27,080 INFO  L93              Difference]: Finished difference Result 5666 states and 8353 transitions.
[2019-10-13 19:45:27,081 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 19:45:27,081 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 152
[2019-10-13 19:45:27,081 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:27,093 INFO  L225             Difference]: With dead ends: 5666
[2019-10-13 19:45:27,093 INFO  L226             Difference]: Without dead ends: 2528
[2019-10-13 19:45:27,100 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 19:45:27,103 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2528 states.
[2019-10-13 19:45:27,199 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2528.
[2019-10-13 19:45:27,200 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2528 states.
[2019-10-13 19:45:27,208 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 3707 transitions.
[2019-10-13 19:45:27,208 INFO  L78                 Accepts]: Start accepts. Automaton has 2528 states and 3707 transitions. Word has length 152
[2019-10-13 19:45:27,208 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:27,208 INFO  L462      AbstractCegarLoop]: Abstraction has 2528 states and 3707 transitions.
[2019-10-13 19:45:27,208 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 19:45:27,209 INFO  L276                IsEmpty]: Start isEmpty. Operand 2528 states and 3707 transitions.
[2019-10-13 19:45:27,213 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-10-13 19:45:27,214 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:27,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 19:45:27,214 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:27,214 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:27,215 INFO  L82        PathProgramCache]: Analyzing trace with hash 696225132, now seen corresponding path program 1 times
[2019-10-13 19:45:27,215 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:27,215 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367304392]
[2019-10-13 19:45:27,215 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:27,216 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:27,216 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:27,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:27,499 WARN  L191               SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-10-13 19:45:27,504 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:27,530 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 19:45:27,531 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367304392]
[2019-10-13 19:45:27,531 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:27,531 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 19:45:27,532 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412970896]
[2019-10-13 19:45:27,532 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 19:45:27,532 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:27,533 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 19:45:27,533 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:27,533 INFO  L87              Difference]: Start difference. First operand 2528 states and 3707 transitions. Second operand 4 states.
[2019-10-13 19:45:29,014 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:29,014 INFO  L93              Difference]: Finished difference Result 6812 states and 10094 transitions.
[2019-10-13 19:45:29,015 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-13 19:45:29,015 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 158
[2019-10-13 19:45:29,015 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:29,038 INFO  L225             Difference]: With dead ends: 6812
[2019-10-13 19:45:29,038 INFO  L226             Difference]: Without dead ends: 4696
[2019-10-13 19:45:29,044 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 19:45:29,050 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4696 states.
[2019-10-13 19:45:29,225 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4694.
[2019-10-13 19:45:29,226 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4694 states.
[2019-10-13 19:45:29,293 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 6887 transitions.
[2019-10-13 19:45:29,294 INFO  L78                 Accepts]: Start accepts. Automaton has 4694 states and 6887 transitions. Word has length 158
[2019-10-13 19:45:29,294 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:29,294 INFO  L462      AbstractCegarLoop]: Abstraction has 4694 states and 6887 transitions.
[2019-10-13 19:45:29,294 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 19:45:29,295 INFO  L276                IsEmpty]: Start isEmpty. Operand 4694 states and 6887 transitions.
[2019-10-13 19:45:29,303 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-10-13 19:45:29,304 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:29,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 19:45:29,304 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:29,305 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:29,305 INFO  L82        PathProgramCache]: Analyzing trace with hash -1185599087, now seen corresponding path program 1 times
[2019-10-13 19:45:29,305 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:29,305 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105952400]
[2019-10-13 19:45:29,305 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:29,306 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:29,306 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:29,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:30,009 WARN  L191               SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-10-13 19:45:30,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:30,114 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 19:45:30,115 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105952400]
[2019-10-13 19:45:30,115 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:30,115 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15
[2019-10-13 19:45:30,116 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010536434]
[2019-10-13 19:45:30,117 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 16 states
[2019-10-13 19:45:30,117 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:30,118 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2019-10-13 19:45:30,118 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240
[2019-10-13 19:45:30,119 INFO  L87              Difference]: Start difference. First operand 4694 states and 6887 transitions. Second operand 16 states.
[2019-10-13 19:45:30,413 WARN  L191               SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 175
[2019-10-13 19:45:33,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:33,884 INFO  L93              Difference]: Finished difference Result 12388 states and 19102 transitions.
[2019-10-13 19:45:33,884 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-10-13 19:45:33,884 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 158
[2019-10-13 19:45:33,884 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:33,922 INFO  L225             Difference]: With dead ends: 12388
[2019-10-13 19:45:33,923 INFO  L226             Difference]: Without dead ends: 8416
[2019-10-13 19:45:33,932 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506
[2019-10-13 19:45:33,941 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8416 states.
[2019-10-13 19:45:34,268 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 6432.
[2019-10-13 19:45:34,268 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6432 states.
[2019-10-13 19:45:34,281 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6432 states to 6432 states and 9844 transitions.
[2019-10-13 19:45:34,281 INFO  L78                 Accepts]: Start accepts. Automaton has 6432 states and 9844 transitions. Word has length 158
[2019-10-13 19:45:34,281 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:34,281 INFO  L462      AbstractCegarLoop]: Abstraction has 6432 states and 9844 transitions.
[2019-10-13 19:45:34,282 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2019-10-13 19:45:34,282 INFO  L276                IsEmpty]: Start isEmpty. Operand 6432 states and 9844 transitions.
[2019-10-13 19:45:34,288 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-10-13 19:45:34,289 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:34,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 19:45:34,289 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:34,289 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:34,290 INFO  L82        PathProgramCache]: Analyzing trace with hash 11065959, now seen corresponding path program 1 times
[2019-10-13 19:45:34,290 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:34,290 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387167671]
[2019-10-13 19:45:34,290 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:34,290 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:34,291 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:34,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:34,698 WARN  L191               SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-10-13 19:45:34,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:34,812 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 19:45:34,813 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387167671]
[2019-10-13 19:45:34,813 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:34,813 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2019-10-13 19:45:34,813 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346092477]
[2019-10-13 19:45:34,814 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 10 states
[2019-10-13 19:45:34,814 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:34,817 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2019-10-13 19:45:34,818 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2019-10-13 19:45:34,818 INFO  L87              Difference]: Start difference. First operand 6432 states and 9844 transitions. Second operand 10 states.
[2019-10-13 19:45:35,068 WARN  L191               SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 167
[2019-10-13 19:45:36,592 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:36,593 INFO  L93              Difference]: Finished difference Result 13818 states and 21476 transitions.
[2019-10-13 19:45:36,593 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-10-13 19:45:36,593 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 158
[2019-10-13 19:45:36,594 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:36,631 INFO  L225             Difference]: With dead ends: 13818
[2019-10-13 19:45:36,631 INFO  L226             Difference]: Without dead ends: 9628
[2019-10-13 19:45:36,640 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110
[2019-10-13 19:45:36,650 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9628 states.
[2019-10-13 19:45:36,989 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9628 to 7796.
[2019-10-13 19:45:36,990 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7796 states.
[2019-10-13 19:45:37,003 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7796 states to 7796 states and 11622 transitions.
[2019-10-13 19:45:37,003 INFO  L78                 Accepts]: Start accepts. Automaton has 7796 states and 11622 transitions. Word has length 158
[2019-10-13 19:45:37,004 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:45:37,004 INFO  L462      AbstractCegarLoop]: Abstraction has 7796 states and 11622 transitions.
[2019-10-13 19:45:37,004 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2019-10-13 19:45:37,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 7796 states and 11622 transitions.
[2019-10-13 19:45:37,014 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2019-10-13 19:45:37,014 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 19:45:37,014 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 19:45:37,015 INFO  L410      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:45:37,015 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:45:37,015 INFO  L82        PathProgramCache]: Analyzing trace with hash -362607228, now seen corresponding path program 1 times
[2019-10-13 19:45:37,015 INFO  L157   tionRefinementEngine]: Executing refinement strategy CAMEL
[2019-10-13 19:45:37,015 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055217074]
[2019-10-13 19:45:37,016 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:37,016 INFO  L116   rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:45:37,016 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:45:37,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:37,409 WARN  L191               SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 166
[2019-10-13 19:45:37,414 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:45:37,484 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 19:45:37,484 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055217074]
[2019-10-13 19:45:37,487 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:45:37,488 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-13 19:45:37,488 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780010880]
[2019-10-13 19:45:37,489 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-10-13 19:45:37,489 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2019-10-13 19:45:37,489 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-10-13 19:45:37,490 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2019-10-13 19:45:37,490 INFO  L87              Difference]: Start difference. First operand 7796 states and 11622 transitions. Second operand 6 states.
[2019-10-13 19:45:37,878 WARN  L191               SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 169
[2019-10-13 19:45:40,289 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:45:40,290 INFO  L93              Difference]: Finished difference Result 16045 states and 25162 transitions.
[2019-10-13 19:45:40,294 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-13 19:45:40,294 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 158
[2019-10-13 19:45:40,295 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:45:40,322 INFO  L225             Difference]: With dead ends: 16045
[2019-10-13 19:45:40,323 INFO  L226             Difference]: Without dead ends: 14207
[2019-10-13 19:45:40,330 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2019-10-13 19:45:40,345 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14207 states.