/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product24.cil.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.24-6598664
[2019-11-24 04:38:21,102 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-24 04:38:21,105 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-24 04:38:21,117 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
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[2019-11-24 04:38:21,118 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-11-24 04:38:21,119 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2019-11-24 04:38:21,130 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-24 04:38:21,131 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-24 04:38:21,133 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2019-11-24 04:38:21,143 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-11-24 04:38:21,146 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2019-11-24 04:38:21,151 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-11-24 04:38:21,153 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-11-24 04:38:21,154 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf
[2019-11-24 04:38:21,169 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-24 04:38:21,169 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-24 04:38:21,170 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2019-11-24 04:38:21,170 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2019-11-24 04:38:21,171 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2019-11-24 04:38:21,171 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2019-11-24 04:38:21,171 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2019-11-24 04:38:21,171 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2019-11-24 04:38:21,172 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2019-11-24 04:38:21,172 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2019-11-24 04:38:21,172 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2019-11-24 04:38:21,172 INFO  L138        SettingsManager]:  * Interval Domain=false
[2019-11-24 04:38:21,172 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2019-11-24 04:38:21,173 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2019-11-24 04:38:21,173 INFO  L138        SettingsManager]:  * Simplification Technique=SIMPLIFY_QUICK
[2019-11-24 04:38:21,173 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-24 04:38:21,174 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-24 04:38:21,174 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-24 04:38:21,174 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-24 04:38:21,174 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-24 04:38:21,174 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-24 04:38:21,175 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-24 04:38:21,175 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-24 04:38:21,175 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-24 04:38:21,175 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-24 04:38:21,175 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-24 04:38:21,176 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-24 04:38:21,176 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-24 04:38:21,176 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-24 04:38:21,176 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-24 04:38:21,176 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-24 04:38:21,177 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-24 04:38:21,177 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-24 04:38:21,177 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2019-11-24 04:38:21,177 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-24 04:38:21,177 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-24 04:38:21,178 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-11-24 04:38:21,178 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2019-11-24 04:38:21,451 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-24 04:38:21,464 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-24 04:38:21,468 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-24 04:38:21,470 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-24 04:38:21,470 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-24 04:38:21,471 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product24.cil.c
[2019-11-24 04:38:21,545 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b998e3226/343a28db59274e2a9857031ce6c58707/FLAGcddb75934
[2019-11-24 04:38:22,176 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-24 04:38:22,180 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product24.cil.c
[2019-11-24 04:38:22,213 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b998e3226/343a28db59274e2a9857031ce6c58707/FLAGcddb75934
[2019-11-24 04:38:22,383 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b998e3226/343a28db59274e2a9857031ce6c58707
[2019-11-24 04:38:22,394 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-24 04:38:22,396 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2019-11-24 04:38:22,397 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-24 04:38:22,397 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-24 04:38:22,400 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-24 04:38:22,401 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:38:22" (1/1) ...
[2019-11-24 04:38:22,404 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c0e2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:22, skipping insertion in model container
[2019-11-24 04:38:22,405 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:38:22" (1/1) ...
[2019-11-24 04:38:22,413 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-24 04:38:22,505 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2019-11-24 04:38:23,188 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-24 04:38:23,203 INFO  L203         MainTranslator]: Completed pre-run
[2019-11-24 04:38:23,359 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-24 04:38:23,430 INFO  L208         MainTranslator]: Completed translation
[2019-11-24 04:38:23,431 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:23 WrapperNode
[2019-11-24 04:38:23,431 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-24 04:38:23,432 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-11-24 04:38:23,432 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-11-24 04:38:23,432 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2019-11-24 04:38:23,441 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:23" (1/1) ...
[2019-11-24 04:38:23,488 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:23" (1/1) ...
[2019-11-24 04:38:23,864 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-11-24 04:38:23,865 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-24 04:38:23,865 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-24 04:38:23,865 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-24 04:38:23,876 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:23" (1/1) ...
[2019-11-24 04:38:23,876 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:23" (1/1) ...
[2019-11-24 04:38:23,934 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:23" (1/1) ...
[2019-11-24 04:38:23,935 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:23" (1/1) ...
[2019-11-24 04:38:24,052 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:23" (1/1) ...
[2019-11-24 04:38:24,208 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:23" (1/1) ...
[2019-11-24 04:38:24,243 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:23" (1/1) ...
[2019-11-24 04:38:24,315 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-24 04:38:24,315 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-24 04:38:24,316 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-24 04:38:24,316 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-24 04:38:24,317 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:23" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-24 04:38:24,403 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-11-24 04:38:24,405 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-11-24 04:38:24,406 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-24 04:38:24,406 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-24 04:39:34,062 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-24 04:39:34,063 INFO  L284             CfgBuilder]: Removed 1577 assume(true) statements.
[2019-11-24 04:39:34,065 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:39:34 BoogieIcfgContainer
[2019-11-24 04:39:34,066 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-24 04:39:34,067 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-24 04:39:34,067 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-24 04:39:34,069 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-24 04:39:34,069 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:38:22" (1/3) ...
[2019-11-24 04:39:34,070 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe2a943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:39:34, skipping insertion in model container
[2019-11-24 04:39:34,070 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:38:23" (2/3) ...
[2019-11-24 04:39:34,071 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe2a943 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:39:34, skipping insertion in model container
[2019-11-24 04:39:34,071 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:39:34" (3/3) ...
[2019-11-24 04:39:34,072 INFO  L109   eAbstractionObserver]: Analyzing ICFG elevator_spec1_product24.cil.c
[2019-11-24 04:39:34,080 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-24 04:39:34,090 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations.
[2019-11-24 04:39:34,100 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 5 error locations.
[2019-11-24 04:39:34,148 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-24 04:39:34,148 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-24 04:39:34,148 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-24 04:39:34,148 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-24 04:39:34,149 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-24 04:39:34,149 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-24 04:39:34,149 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-24 04:39:34,149 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-24 04:39:34,197 INFO  L276                IsEmpty]: Start isEmpty. Operand 2433 states.
[2019-11-24 04:39:34,208 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2019-11-24 04:39:34,209 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:39:34,210 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:39:34,210 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:39:34,215 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:39:34,216 INFO  L82        PathProgramCache]: Analyzing trace with hash 134231720, now seen corresponding path program 1 times
[2019-11-24 04:39:34,223 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:39:34,223 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324490493]
[2019-11-24 04:39:34,223 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:39:34,499 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:39:34,622 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 04:39:34,622 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324490493]
[2019-11-24 04:39:34,625 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:39:34,626 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-11-24 04:39:34,627 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033650693]
[2019-11-24 04:39:34,632 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-11-24 04:39:34,632 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:39:34,646 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-11-24 04:39:34,647 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-11-24 04:39:34,649 INFO  L87              Difference]: Start difference. First operand 2433 states. Second operand 2 states.
[2019-11-24 04:39:34,803 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:39:34,804 INFO  L93              Difference]: Finished difference Result 2450 states and 4731 transitions.
[2019-11-24 04:39:34,804 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2019-11-24 04:39:34,806 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 12
[2019-11-24 04:39:34,806 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:39:34,852 INFO  L225             Difference]: With dead ends: 2450
[2019-11-24 04:39:34,853 INFO  L226             Difference]: Without dead ends: 2431
[2019-11-24 04:39:34,860 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-11-24 04:39:34,889 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2431 states.
[2019-11-24 04:39:35,008 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2431.
[2019-11-24 04:39:35,010 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2431 states.
[2019-11-24 04:39:35,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2431 states to 2431 states and 4701 transitions.
[2019-11-24 04:39:35,023 INFO  L78                 Accepts]: Start accepts. Automaton has 2431 states and 4701 transitions. Word has length 12
[2019-11-24 04:39:35,023 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:39:35,024 INFO  L462      AbstractCegarLoop]: Abstraction has 2431 states and 4701 transitions.
[2019-11-24 04:39:35,024 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-11-24 04:39:35,024 INFO  L276                IsEmpty]: Start isEmpty. Operand 2431 states and 4701 transitions.
[2019-11-24 04:39:35,032 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2019-11-24 04:39:35,032 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:39:35,032 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:39:35,033 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:39:35,033 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:39:35,033 INFO  L82        PathProgramCache]: Analyzing trace with hash -166148188, now seen corresponding path program 1 times
[2019-11-24 04:39:35,034 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:39:35,034 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311872165]
[2019-11-24 04:39:35,034 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:39:35,134 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:39:35,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 04:39:35,246 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311872165]
[2019-11-24 04:39:35,247 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:39:35,247 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:39:35,247 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747178057]
[2019-11-24 04:39:35,248 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-24 04:39:35,249 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:39:35,250 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-24 04:39:35,250 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:39:35,250 INFO  L87              Difference]: Start difference. First operand 2431 states and 4701 transitions. Second operand 3 states.
[2019-11-24 04:39:35,387 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:39:35,388 INFO  L93              Difference]: Finished difference Result 3663 states and 7078 transitions.
[2019-11-24 04:39:35,388 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-24 04:39:35,388 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 13
[2019-11-24 04:39:35,389 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:39:35,402 INFO  L225             Difference]: With dead ends: 3663
[2019-11-24 04:39:35,402 INFO  L226             Difference]: Without dead ends: 2427
[2019-11-24 04:39:35,409 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:39:35,415 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2427 states.
[2019-11-24 04:39:35,460 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2427 to 2427.
[2019-11-24 04:39:35,461 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2427 states.
[2019-11-24 04:39:35,470 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2427 states to 2427 states and 4693 transitions.
[2019-11-24 04:39:35,471 INFO  L78                 Accepts]: Start accepts. Automaton has 2427 states and 4693 transitions. Word has length 13
[2019-11-24 04:39:35,471 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:39:35,471 INFO  L462      AbstractCegarLoop]: Abstraction has 2427 states and 4693 transitions.
[2019-11-24 04:39:35,471 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-24 04:39:35,471 INFO  L276                IsEmpty]: Start isEmpty. Operand 2427 states and 4693 transitions.
[2019-11-24 04:39:35,473 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2019-11-24 04:39:35,473 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:39:35,473 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:39:35,474 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:39:35,474 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:39:35,474 INFO  L82        PathProgramCache]: Analyzing trace with hash 1219383002, now seen corresponding path program 1 times
[2019-11-24 04:39:35,475 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:39:35,475 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098472487]
[2019-11-24 04:39:35,475 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:39:35,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:39:35,570 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 04:39:35,570 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098472487]
[2019-11-24 04:39:35,571 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:39:35,571 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:39:35,571 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67995557]
[2019-11-24 04:39:35,572 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-24 04:39:35,572 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:39:35,572 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-24 04:39:35,572 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-24 04:39:35,573 INFO  L87              Difference]: Start difference. First operand 2427 states and 4693 transitions. Second operand 4 states.
[2019-11-24 04:39:39,178 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:39:39,178 INFO  L93              Difference]: Finished difference Result 6237 states and 11997 transitions.
[2019-11-24 04:39:39,178 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-24 04:39:39,179 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 15
[2019-11-24 04:39:39,179 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:39:39,203 INFO  L225             Difference]: With dead ends: 6237
[2019-11-24 04:39:39,204 INFO  L226             Difference]: Without dead ends: 4290
[2019-11-24 04:39:39,208 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-24 04:39:39,214 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4290 states.
[2019-11-24 04:39:39,295 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4290 to 2847.
[2019-11-24 04:39:39,295 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2847 states.
[2019-11-24 04:39:39,306 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 5244 transitions.
[2019-11-24 04:39:39,306 INFO  L78                 Accepts]: Start accepts. Automaton has 2847 states and 5244 transitions. Word has length 15
[2019-11-24 04:39:39,306 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:39:39,306 INFO  L462      AbstractCegarLoop]: Abstraction has 2847 states and 5244 transitions.
[2019-11-24 04:39:39,306 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-24 04:39:39,307 INFO  L276                IsEmpty]: Start isEmpty. Operand 2847 states and 5244 transitions.
[2019-11-24 04:39:39,308 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2019-11-24 04:39:39,308 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:39:39,308 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:39:39,308 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:39:39,309 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:39:39,309 INFO  L82        PathProgramCache]: Analyzing trace with hash -2031760178, now seen corresponding path program 1 times
[2019-11-24 04:39:39,309 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:39:39,309 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389653527]
[2019-11-24 04:39:39,310 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:39:39,356 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:39:39,421 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 04:39:39,422 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389653527]
[2019-11-24 04:39:39,422 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:39:39,422 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-24 04:39:39,422 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134748501]
[2019-11-24 04:39:39,423 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-24 04:39:39,423 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:39:39,423 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-24 04:39:39,424 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-24 04:39:39,424 INFO  L87              Difference]: Start difference. First operand 2847 states and 5244 transitions. Second operand 5 states.
[2019-11-24 04:39:39,695 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:39:39,695 INFO  L93              Difference]: Finished difference Result 4874 states and 9026 transitions.
[2019-11-24 04:39:39,696 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-24 04:39:39,696 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 16
[2019-11-24 04:39:39,696 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:39:39,728 INFO  L225             Difference]: With dead ends: 4874
[2019-11-24 04:39:39,728 INFO  L226             Difference]: Without dead ends: 4861
[2019-11-24 04:39:39,735 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-11-24 04:39:39,751 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4861 states.
[2019-11-24 04:39:39,899 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4861 to 2851.
[2019-11-24 04:39:39,899 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2851 states.
[2019-11-24 04:39:39,912 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2851 states to 2851 states and 5248 transitions.
[2019-11-24 04:39:39,913 INFO  L78                 Accepts]: Start accepts. Automaton has 2851 states and 5248 transitions. Word has length 16
[2019-11-24 04:39:39,913 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:39:39,913 INFO  L462      AbstractCegarLoop]: Abstraction has 2851 states and 5248 transitions.
[2019-11-24 04:39:39,913 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-24 04:39:39,914 INFO  L276                IsEmpty]: Start isEmpty. Operand 2851 states and 5248 transitions.
[2019-11-24 04:39:39,916 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2019-11-24 04:39:39,917 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:39:39,917 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:39:39,917 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:39:39,918 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:39:39,918 INFO  L82        PathProgramCache]: Analyzing trace with hash -993826772, now seen corresponding path program 1 times
[2019-11-24 04:39:39,918 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:39:39,919 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160342542]
[2019-11-24 04:39:39,919 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:39:40,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:39:40,087 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 04:39:40,087 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160342542]
[2019-11-24 04:39:40,088 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:39:40,089 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-11-24 04:39:40,089 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024920446]
[2019-11-24 04:39:40,089 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-11-24 04:39:40,090 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:39:40,090 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-11-24 04:39:40,090 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:39:40,090 INFO  L87              Difference]: Start difference. First operand 2851 states and 5248 transitions. Second operand 3 states.
[2019-11-24 04:39:40,762 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:39:40,763 INFO  L93              Difference]: Finished difference Result 5817 states and 10777 transitions.
[2019-11-24 04:39:40,763 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-11-24 04:39:40,763 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 17
[2019-11-24 04:39:40,764 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:39:40,782 INFO  L225             Difference]: With dead ends: 5817
[2019-11-24 04:39:40,782 INFO  L226             Difference]: Without dead ends: 3793
[2019-11-24 04:39:40,786 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-11-24 04:39:40,792 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3793 states.
[2019-11-24 04:39:40,942 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3780.
[2019-11-24 04:39:40,943 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3780 states.
[2019-11-24 04:39:40,953 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 6982 transitions.
[2019-11-24 04:39:40,953 INFO  L78                 Accepts]: Start accepts. Automaton has 3780 states and 6982 transitions. Word has length 17
[2019-11-24 04:39:40,953 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:39:40,953 INFO  L462      AbstractCegarLoop]: Abstraction has 3780 states and 6982 transitions.
[2019-11-24 04:39:40,954 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-11-24 04:39:40,954 INFO  L276                IsEmpty]: Start isEmpty. Operand 3780 states and 6982 transitions.
[2019-11-24 04:39:40,955 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2019-11-24 04:39:40,956 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:39:40,956 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:39:40,956 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:39:40,956 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:39:40,956 INFO  L82        PathProgramCache]: Analyzing trace with hash 1168247136, now seen corresponding path program 1 times
[2019-11-24 04:39:40,957 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:39:40,957 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846508533]
[2019-11-24 04:39:40,957 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:39:40,997 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:39:41,048 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 04:39:41,049 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846508533]
[2019-11-24 04:39:41,049 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:39:41,049 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-11-24 04:39:41,050 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982726408]
[2019-11-24 04:39:41,050 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-24 04:39:41,050 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:39:41,050 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-24 04:39:41,051 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-24 04:39:41,051 INFO  L87              Difference]: Start difference. First operand 3780 states and 6982 transitions. Second operand 4 states.
[2019-11-24 04:39:41,378 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:39:41,378 INFO  L93              Difference]: Finished difference Result 7226 states and 13385 transitions.
[2019-11-24 04:39:41,379 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-24 04:39:41,379 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 19
[2019-11-24 04:39:41,379 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:39:41,421 INFO  L225             Difference]: With dead ends: 7226
[2019-11-24 04:39:41,421 INFO  L226             Difference]: Without dead ends: 3852
[2019-11-24 04:39:41,427 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-24 04:39:41,433 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3852 states.
[2019-11-24 04:39:41,569 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3852 to 3094.
[2019-11-24 04:39:41,570 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3094 states.
[2019-11-24 04:39:41,577 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 5732 transitions.
[2019-11-24 04:39:41,577 INFO  L78                 Accepts]: Start accepts. Automaton has 3094 states and 5732 transitions. Word has length 19
[2019-11-24 04:39:41,578 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:39:41,578 INFO  L462      AbstractCegarLoop]: Abstraction has 3094 states and 5732 transitions.
[2019-11-24 04:39:41,578 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-24 04:39:41,578 INFO  L276                IsEmpty]: Start isEmpty. Operand 3094 states and 5732 transitions.
[2019-11-24 04:39:41,579 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2019-11-24 04:39:41,579 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:39:41,581 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:39:41,583 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:39:41,583 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:39:41,584 INFO  L82        PathProgramCache]: Analyzing trace with hash 1096363125, now seen corresponding path program 1 times
[2019-11-24 04:39:41,590 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:39:41,591 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258206390]
[2019-11-24 04:39:41,591 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:39:41,642 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:39:41,714 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 04:39:41,714 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258206390]
[2019-11-24 04:39:41,714 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:39:41,715 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-24 04:39:41,715 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246842534]
[2019-11-24 04:39:41,715 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-24 04:39:41,715 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:39:41,716 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-24 04:39:41,716 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-24 04:39:41,716 INFO  L87              Difference]: Start difference. First operand 3094 states and 5732 transitions. Second operand 5 states.
[2019-11-24 04:39:42,385 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:39:42,386 INFO  L93              Difference]: Finished difference Result 7787 states and 14511 transitions.
[2019-11-24 04:39:42,387 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-11-24 04:39:42,387 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 20
[2019-11-24 04:39:42,388 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:39:42,407 INFO  L225             Difference]: With dead ends: 7787
[2019-11-24 04:39:42,408 INFO  L226             Difference]: Without dead ends: 5446
[2019-11-24 04:39:42,413 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2019-11-24 04:39:42,421 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5446 states.
[2019-11-24 04:39:42,963 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5446 to 3094.
[2019-11-24 04:39:42,963 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3094 states.
[2019-11-24 04:39:42,971 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 5729 transitions.
[2019-11-24 04:39:42,971 INFO  L78                 Accepts]: Start accepts. Automaton has 3094 states and 5729 transitions. Word has length 20
[2019-11-24 04:39:42,972 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:39:42,972 INFO  L462      AbstractCegarLoop]: Abstraction has 3094 states and 5729 transitions.
[2019-11-24 04:39:42,972 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-24 04:39:42,972 INFO  L276                IsEmpty]: Start isEmpty. Operand 3094 states and 5729 transitions.
[2019-11-24 04:39:42,973 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2019-11-24 04:39:42,973 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:39:42,973 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:39:42,973 INFO  L410      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:39:42,974 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:39:42,974 INFO  L82        PathProgramCache]: Analyzing trace with hash -1725663664, now seen corresponding path program 1 times
[2019-11-24 04:39:42,974 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:39:42,975 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929116307]
[2019-11-24 04:39:42,975 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:39:43,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:39:43,100 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 04:39:43,100 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929116307]
[2019-11-24 04:39:43,101 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:39:43,101 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-24 04:39:43,101 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122148924]
[2019-11-24 04:39:43,101 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-24 04:39:43,102 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:39:43,102 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-24 04:39:43,102 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-24 04:39:43,102 INFO  L87              Difference]: Start difference. First operand 3094 states and 5729 transitions. Second operand 4 states.
[2019-11-24 04:39:43,330 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-24 04:39:43,330 INFO  L93              Difference]: Finished difference Result 4959 states and 9143 transitions.
[2019-11-24 04:39:43,331 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-24 04:39:43,331 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 21
[2019-11-24 04:39:43,331 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-24 04:39:43,344 INFO  L225             Difference]: With dead ends: 4959
[2019-11-24 04:39:43,345 INFO  L226             Difference]: Without dead ends: 4946
[2019-11-24 04:39:43,347 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-24 04:39:43,354 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4946 states.
[2019-11-24 04:39:43,506 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 3145.
[2019-11-24 04:39:43,506 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3145 states.
[2019-11-24 04:39:43,512 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3145 states to 3145 states and 5802 transitions.
[2019-11-24 04:39:43,513 INFO  L78                 Accepts]: Start accepts. Automaton has 3145 states and 5802 transitions. Word has length 21
[2019-11-24 04:39:43,513 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-24 04:39:43,513 INFO  L462      AbstractCegarLoop]: Abstraction has 3145 states and 5802 transitions.
[2019-11-24 04:39:43,513 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-24 04:39:43,513 INFO  L276                IsEmpty]: Start isEmpty. Operand 3145 states and 5802 transitions.
[2019-11-24 04:39:43,514 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2019-11-24 04:39:43,514 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-24 04:39:43,514 INFO  L410         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-24 04:39:43,515 INFO  L410      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-24 04:39:43,515 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-24 04:39:43,515 INFO  L82        PathProgramCache]: Analyzing trace with hash 1187734294, now seen corresponding path program 1 times
[2019-11-24 04:39:43,515 INFO  L163   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-24 04:39:43,516 INFO  L348   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179974150]
[2019-11-24 04:39:43,516 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-24 04:39:43,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-24 04:39:43,646 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-24 04:39:43,647 INFO  L348   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179974150]
[2019-11-24 04:39:43,647 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-24 04:39:43,647 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-24 04:39:43,648 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761106009]
[2019-11-24 04:39:43,648 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-24 04:39:43,648 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-24 04:39:43,649 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-24 04:39:43,649 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-11-24 04:39:43,649 INFO  L87              Difference]: Start difference. First operand 3145 states and 5802 transitions. Second operand 5 states.