java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label19_false-unreach-call.c
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This is Ultimate 0.1.23-df4b876
[2018-11-07 00:52:23,285 INFO L170 SettingsManager]: Resetting all preferences to default values...
[2018-11-07 00:52:23,287 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values
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[2018-11-07 00:52:23,300 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-11-07 00:52:23,301 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-11-07 00:52:23,304 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2018-11-07 00:52:23,330 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-11-07 00:52:23,332 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-11-07 00:52:23,334 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values
[2018-11-07 00:52:23,335 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-11-07 00:52:23,337 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-11-07 00:52:23,338 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2018-11-07 00:52:23,341 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2018-11-07 00:52:23,343 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2018-11-07 00:52:23,350 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf
[2018-11-07 00:52:23,366 INFO L110 SettingsManager]: Loading preferences was successful
[2018-11-07 00:52:23,367 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2018-11-07 00:52:23,367 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-11-07 00:52:23,370 INFO L133 SettingsManager]: * User list type=DISABLED
[2018-11-07 00:52:23,370 INFO L133 SettingsManager]: * calls to implemented procedures=false
[2018-11-07 00:52:23,370 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-11-07 00:52:23,370 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2018-11-07 00:52:23,370 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain
[2018-11-07 00:52:23,371 INFO L133 SettingsManager]: * Log string format=TERM
[2018-11-07 00:52:23,371 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true
[2018-11-07 00:52:23,371 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true
[2018-11-07 00:52:23,371 INFO L133 SettingsManager]: * Interval Domain=false
[2018-11-07 00:52:23,372 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-11-07 00:52:23,372 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true
[2018-11-07 00:52:23,372 INFO L133 SettingsManager]: * Check division by zero=IGNORE
[2018-11-07 00:52:23,373 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2018-11-07 00:52:23,374 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-11-07 00:52:23,374 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2018-11-07 00:52:23,374 INFO L133 SettingsManager]: * Check if freed pointer was valid=false
[2018-11-07 00:52:23,374 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2018-11-07 00:52:23,375 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-11-07 00:52:23,375 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements
[2018-11-07 00:52:23,375 INFO L133 SettingsManager]: * To the following directory=./dump/
[2018-11-07 00:52:23,375 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode
[2018-11-07 00:52:23,375 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-11-07 00:52:23,376 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-11-07 00:52:23,376 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2018-11-07 00:52:23,376 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-11-07 00:52:23,377 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN
[2018-11-07 00:52:23,377 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2018-11-07 00:52:23,377 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-11-07 00:52:23,377 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-11-07 00:52:23,377 INFO L133 SettingsManager]: * To the following directory=dump/
[2018-11-07 00:52:23,378 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES
[2018-11-07 00:52:23,445 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2018-11-07 00:52:23,459 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-11-07 00:52:23,463 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-11-07 00:52:23,465 INFO L271 PluginConnector]: Initializing CDTParser...
[2018-11-07 00:52:23,465 INFO L276 PluginConnector]: CDTParser initialized
[2018-11-07 00:52:23,466 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label19_false-unreach-call.c
[2018-11-07 00:52:23,530 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49aae8149/d70a9ab17281407a96e0ae3a09aa1f4d/FLAGcd4476240
[2018-11-07 00:52:24,474 INFO L298 CDTParser]: Found 1 translation units.
[2018-11-07 00:52:24,475 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label19_false-unreach-call.c
[2018-11-07 00:52:24,523 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49aae8149/d70a9ab17281407a96e0ae3a09aa1f4d/FLAGcd4476240
[2018-11-07 00:52:24,538 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49aae8149/d70a9ab17281407a96e0ae3a09aa1f4d
[2018-11-07 00:52:24,550 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-11-07 00:52:24,552 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2018-11-07 00:52:24,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-11-07 00:52:24,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-11-07 00:52:24,557 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized
[2018-11-07 00:52:24,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:24" (1/1) ...
[2018-11-07 00:52:24,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9260898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:24, skipping insertion in model container
[2018-11-07 00:52:24,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:24" (1/1) ...
[2018-11-07 00:52:24,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2018-11-07 00:52:24,821 INFO L174 MainTranslator]: Built tables and reachable declarations
[2018-11-07 00:52:27,053 INFO L202 PostProcessor]: Analyzing one entry point: main
[2018-11-07 00:52:27,057 INFO L189 MainTranslator]: Completed pre-run
[2018-11-07 00:52:28,161 INFO L202 PostProcessor]: Analyzing one entry point: main
[2018-11-07 00:52:28,220 INFO L193 MainTranslator]: Completed translation
[2018-11-07 00:52:28,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:28 WrapperNode
[2018-11-07 00:52:28,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-11-07 00:52:28,222 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-11-07 00:52:28,222 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-11-07 00:52:28,223 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized
[2018-11-07 00:52:28,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:28" (1/1) ...
[2018-11-07 00:52:28,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:28" (1/1) ...
[2018-11-07 00:52:28,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-11-07 00:52:28,746 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-11-07 00:52:28,746 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2018-11-07 00:52:28,746 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2018-11-07 00:52:28,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:28" (1/1) ...
[2018-11-07 00:52:28,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:28" (1/1) ...
[2018-11-07 00:52:28,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:28" (1/1) ...
[2018-11-07 00:52:28,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:28" (1/1) ...
[2018-11-07 00:52:29,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:28" (1/1) ...
[2018-11-07 00:52:29,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:28" (1/1) ...
[2018-11-07 00:52:29,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:28" (1/1) ...
[2018-11-07 00:52:29,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-11-07 00:52:29,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-11-07 00:52:29,296 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2018-11-07 00:52:29,296 INFO L276 PluginConnector]: RCFGBuilder initialized
[2018-11-07 00:52:29,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:28" (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
[2018-11-07 00:52:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure exit
[2018-11-07 00:52:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-11-07 00:52:29,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-11-07 00:52:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6
[2018-11-07 00:52:29,364 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6
[2018-11-07 00:52:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5
[2018-11-07 00:52:29,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5
[2018-11-07 00:52:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4
[2018-11-07 00:52:29,365 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4
[2018-11-07 00:52:29,365 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3
[2018-11-07 00:52:29,370 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3
[2018-11-07 00:52:29,370 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2
[2018-11-07 00:52:29,370 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2
[2018-11-07 00:52:29,371 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output
[2018-11-07 00:52:29,371 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output
[2018-11-07 00:52:29,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-11-07 00:52:29,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-11-07 00:52:29,372 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2018-11-07 00:52:29,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2018-11-07 00:52:46,262 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-11-07 00:52:46,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:46 BoogieIcfgContainer
[2018-11-07 00:52:46,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-11-07 00:52:46,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-11-07 00:52:46,264 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2018-11-07 00:52:46,268 INFO L276 PluginConnector]: TraceAbstraction initialized
[2018-11-07 00:52:46,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:24" (1/3) ...
[2018-11-07 00:52:46,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee3c13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:46, skipping insertion in model container
[2018-11-07 00:52:46,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:28" (2/3) ...
[2018-11-07 00:52:46,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee3c13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:46, skipping insertion in model container
[2018-11-07 00:52:46,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:46" (3/3) ...
[2018-11-07 00:52:46,272 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label19_false-unreach-call.c
[2018-11-07 00:52:46,282 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-11-07 00:52:46,294 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-11-07 00:52:46,311 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-11-07 00:52:46,374 INFO L382 AbstractCegarLoop]: Interprodecural is true
[2018-11-07 00:52:46,374 INFO L383 AbstractCegarLoop]: Hoare is true
[2018-11-07 00:52:46,374 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-11-07 00:52:46,375 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-11-07 00:52:46,375 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-11-07 00:52:46,375 INFO L387 AbstractCegarLoop]: Difference is false
[2018-11-07 00:52:46,375 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-11-07 00:52:46,375 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-11-07 00:52:46,433 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states.
[2018-11-07 00:52:46,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2018-11-07 00:52:46,441 INFO L367 BasicCegarLoop]: Found error trace
[2018-11-07 00:52:46,442 INFO L375 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]
[2018-11-07 00:52:46,445 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 00:52:46,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 00:52:46,452 INFO L82 PathProgramCache]: Analyzing trace with hash -316580422, now seen corresponding path program 1 times
[2018-11-07 00:52:46,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 00:52:46,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:52:46,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 00:52:46,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:52:46,517 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 00:52:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 00:52:46,939 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-11-07 00:52:47,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-07 00:52:47,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 00:52:47,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-11-07 00:52:47,077 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 00:52:47,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-11-07 00:52:47,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-11-07 00:52:47,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-07 00:52:47,114 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states.
[2018-11-07 00:53:00,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 00:53:00,907 INFO L93 Difference]: Finished difference Result 5049 states and 9513 transitions.
[2018-11-07 00:53:00,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2018-11-07 00:53:00,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31
[2018-11-07 00:53:00,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 00:53:00,974 INFO L225 Difference]: With dead ends: 5049
[2018-11-07 00:53:00,974 INFO L226 Difference]: Without dead ends: 3269
[2018-11-07 00:53:00,985 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-07 00:53:01,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states.
[2018-11-07 00:53:01,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3218.
[2018-11-07 00:53:01,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3218 states.
[2018-11-07 00:53:01,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3218 states to 3218 states and 5997 transitions.
[2018-11-07 00:53:01,203 INFO L78 Accepts]: Start accepts. Automaton has 3218 states and 5997 transitions. Word has length 31
[2018-11-07 00:53:01,204 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-11-07 00:53:01,204 INFO L480 AbstractCegarLoop]: Abstraction has 3218 states and 5997 transitions.
[2018-11-07 00:53:01,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-11-07 00:53:01,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3218 states and 5997 transitions.
[2018-11-07 00:53:01,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2018-11-07 00:53:01,210 INFO L367 BasicCegarLoop]: Found error trace
[2018-11-07 00:53:01,211 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-07 00:53:01,211 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 00:53:01,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 00:53:01,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1827341156, now seen corresponding path program 1 times
[2018-11-07 00:53:01,212 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 00:53:01,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:53:01,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 00:53:01,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:53:01,214 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 00:53:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 00:53:01,645 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-11-07 00:53:02,019 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-07 00:53:02,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 00:53:02,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-11-07 00:53:02,020 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 00:53:02,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-11-07 00:53:02,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-11-07 00:53:02,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2018-11-07 00:53:02,024 INFO L87 Difference]: Start difference. First operand 3218 states and 5997 transitions. Second operand 6 states.
[2018-11-07 00:53:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 00:53:25,764 INFO L93 Difference]: Finished difference Result 12137 states and 23144 transitions.
[2018-11-07 00:53:25,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2018-11-07 00:53:25,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103
[2018-11-07 00:53:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 00:53:25,830 INFO L225 Difference]: With dead ends: 12137
[2018-11-07 00:53:25,831 INFO L226 Difference]: Without dead ends: 8925
[2018-11-07 00:53:25,846 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2018-11-07 00:53:25,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8925 states.
[2018-11-07 00:53:26,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8925 to 8862.
[2018-11-07 00:53:26,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8862 states.
[2018-11-07 00:53:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8862 states to 8862 states and 14404 transitions.
[2018-11-07 00:53:26,113 INFO L78 Accepts]: Start accepts. Automaton has 8862 states and 14404 transitions. Word has length 103
[2018-11-07 00:53:26,113 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-11-07 00:53:26,114 INFO L480 AbstractCegarLoop]: Abstraction has 8862 states and 14404 transitions.
[2018-11-07 00:53:26,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-11-07 00:53:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 8862 states and 14404 transitions.
[2018-11-07 00:53:26,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2018-11-07 00:53:26,124 INFO L367 BasicCegarLoop]: Found error trace
[2018-11-07 00:53:26,124 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-07 00:53:26,124 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 00:53:26,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 00:53:26,126 INFO L82 PathProgramCache]: Analyzing trace with hash 478615574, now seen corresponding path program 1 times
[2018-11-07 00:53:26,126 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 00:53:26,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:53:26,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 00:53:26,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:53:26,128 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 00:53:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 00:53:26,467 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-07 00:53:26,468 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 00:53:26,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-11-07 00:53:26,468 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 00:53:26,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-11-07 00:53:26,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-11-07 00:53:26,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-11-07 00:53:26,472 INFO L87 Difference]: Start difference. First operand 8862 states and 14404 transitions. Second operand 5 states.
[2018-11-07 00:53:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 00:53:51,197 INFO L93 Difference]: Finished difference Result 32212 states and 52834 transitions.
[2018-11-07 00:53:51,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2018-11-07 00:53:51,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105
[2018-11-07 00:53:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 00:53:51,299 INFO L225 Difference]: With dead ends: 32212
[2018-11-07 00:53:51,300 INFO L226 Difference]: Without dead ends: 23356
[2018-11-07 00:53:51,339 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2018-11-07 00:53:51,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23356 states.
[2018-11-07 00:53:51,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23356 to 23166.
[2018-11-07 00:53:51,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23166 states.
[2018-11-07 00:53:51,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23166 states to 23166 states and 32140 transitions.
[2018-11-07 00:53:51,894 INFO L78 Accepts]: Start accepts. Automaton has 23166 states and 32140 transitions. Word has length 105
[2018-11-07 00:53:51,894 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-11-07 00:53:51,895 INFO L480 AbstractCegarLoop]: Abstraction has 23166 states and 32140 transitions.
[2018-11-07 00:53:51,895 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-11-07 00:53:51,896 INFO L276 IsEmpty]: Start isEmpty. Operand 23166 states and 32140 transitions.
[2018-11-07 00:53:51,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2018-11-07 00:53:51,902 INFO L367 BasicCegarLoop]: Found error trace
[2018-11-07 00:53:51,902 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-07 00:53:51,903 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 00:53:51,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 00:53:51,903 INFO L82 PathProgramCache]: Analyzing trace with hash -727238078, now seen corresponding path program 1 times
[2018-11-07 00:53:51,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 00:53:51,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:53:51,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 00:53:51,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:53:51,905 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 00:53:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 00:53:52,168 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-11-07 00:53:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-07 00:53:52,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 00:53:52,547 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-11-07 00:53:52,547 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 00:53:52,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-11-07 00:53:52,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-11-07 00:53:52,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2018-11-07 00:53:52,548 INFO L87 Difference]: Start difference. First operand 23166 states and 32140 transitions. Second operand 6 states.
[2018-11-07 00:54:07,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 00:54:07,657 INFO L93 Difference]: Finished difference Result 52762 states and 75855 transitions.
[2018-11-07 00:54:07,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2018-11-07 00:54:07,658 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110
[2018-11-07 00:54:07,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 00:54:07,774 INFO L225 Difference]: With dead ends: 52762
[2018-11-07 00:54:07,775 INFO L226 Difference]: Without dead ends: 29602
[2018-11-07 00:54:07,837 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2018-11-07 00:54:07,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29602 states.
[2018-11-07 00:54:08,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29602 to 29364.
[2018-11-07 00:54:08,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29364 states.
[2018-11-07 00:54:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29364 states to 29364 states and 40722 transitions.
[2018-11-07 00:54:08,517 INFO L78 Accepts]: Start accepts. Automaton has 29364 states and 40722 transitions. Word has length 110
[2018-11-07 00:54:08,517 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-11-07 00:54:08,518 INFO L480 AbstractCegarLoop]: Abstraction has 29364 states and 40722 transitions.
[2018-11-07 00:54:08,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-11-07 00:54:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 29364 states and 40722 transitions.
[2018-11-07 00:54:08,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161
[2018-11-07 00:54:08,521 INFO L367 BasicCegarLoop]: Found error trace
[2018-11-07 00:54:08,522 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-07 00:54:08,522 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 00:54:08,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 00:54:08,525 INFO L82 PathProgramCache]: Analyzing trace with hash 340192155, now seen corresponding path program 1 times
[2018-11-07 00:54:08,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 00:54:08,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:54:08,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 00:54:08,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:54:08,527 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 00:54:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 00:54:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-07 00:54:08,867 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 00:54:08,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-11-07 00:54:08,868 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 00:54:08,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-11-07 00:54:08,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-11-07 00:54:08,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-11-07 00:54:08,869 INFO L87 Difference]: Start difference. First operand 29364 states and 40722 transitions. Second operand 5 states.
[2018-11-07 00:54:25,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 00:54:25,236 INFO L93 Difference]: Finished difference Result 88276 states and 129153 transitions.
[2018-11-07 00:54:25,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2018-11-07 00:54:25,240 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160
[2018-11-07 00:54:25,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 00:54:25,472 INFO L225 Difference]: With dead ends: 88276
[2018-11-07 00:54:25,472 INFO L226 Difference]: Without dead ends: 58918
[2018-11-07 00:54:25,539 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2018-11-07 00:54:25,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58918 states.
[2018-11-07 00:54:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58918 to 57680.
[2018-11-07 00:54:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57680 states.
[2018-11-07 00:54:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57680 states to 57680 states and 76256 transitions.
[2018-11-07 00:54:27,042 INFO L78 Accepts]: Start accepts. Automaton has 57680 states and 76256 transitions. Word has length 160
[2018-11-07 00:54:27,043 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-11-07 00:54:27,043 INFO L480 AbstractCegarLoop]: Abstraction has 57680 states and 76256 transitions.
[2018-11-07 00:54:27,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-11-07 00:54:27,043 INFO L276 IsEmpty]: Start isEmpty. Operand 57680 states and 76256 transitions.
[2018-11-07 00:54:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2018-11-07 00:54:27,053 INFO L367 BasicCegarLoop]: Found error trace
[2018-11-07 00:54:27,053 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-07 00:54:27,053 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 00:54:27,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 00:54:27,054 INFO L82 PathProgramCache]: Analyzing trace with hash 378808406, now seen corresponding path program 1 times
[2018-11-07 00:54:27,054 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 00:54:27,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:54:27,055 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 00:54:27,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:54:27,055 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 00:54:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 00:54:27,349 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-11-07 00:54:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-07 00:54:27,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-07 00:54:27,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-11-07 00:54:27,727 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 00:54:27,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-11-07 00:54:27,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-11-07 00:54:27,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2018-11-07 00:54:27,729 INFO L87 Difference]: Start difference. First operand 57680 states and 76256 transitions. Second operand 6 states.
[2018-11-07 00:54:45,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-07 00:54:45,352 INFO L93 Difference]: Finished difference Result 142052 states and 196434 transitions.
[2018-11-07 00:54:45,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2018-11-07 00:54:45,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170
[2018-11-07 00:54:45,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-07 00:54:45,610 INFO L225 Difference]: With dead ends: 142052
[2018-11-07 00:54:45,611 INFO L226 Difference]: Without dead ends: 84378
[2018-11-07 00:54:45,721 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2018-11-07 00:54:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84378 states.
[2018-11-07 00:54:46,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84378 to 83981.
[2018-11-07 00:54:46,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83981 states.
[2018-11-07 00:54:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83981 states to 83981 states and 108220 transitions.
[2018-11-07 00:54:47,194 INFO L78 Accepts]: Start accepts. Automaton has 83981 states and 108220 transitions. Word has length 170
[2018-11-07 00:54:47,194 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-11-07 00:54:47,195 INFO L480 AbstractCegarLoop]: Abstraction has 83981 states and 108220 transitions.
[2018-11-07 00:54:47,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-11-07 00:54:47,195 INFO L276 IsEmpty]: Start isEmpty. Operand 83981 states and 108220 transitions.
[2018-11-07 00:54:47,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213
[2018-11-07 00:54:47,206 INFO L367 BasicCegarLoop]: Found error trace
[2018-11-07 00:54:47,207 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-07 00:54:47,207 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-07 00:54:47,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 00:54:47,207 INFO L82 PathProgramCache]: Analyzing trace with hash -170738894, now seen corresponding path program 1 times
[2018-11-07 00:54:47,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-11-07 00:54:47,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:54:47,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-07 00:54:47,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-07 00:54:47,210 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-11-07 00:54:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-07 00:54:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 48 proven. 85 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-11-07 00:54:48,283 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-11-07 00:54:48,283 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION
[2018-11-07 00:54:48,284 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions:
[2018-11-07 00:54:48,291 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5374], [5376], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5841], [5842], [5845], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842]
[2018-11-07 00:54:48,379 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain]
[2018-11-07 00:54:48,379 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2)
[2018-11-07 00:54:50,859 INFO L266 AbstractInterpreter]: Error location(s) were unreachable
[2018-11-07 00:54:50,860 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables.
[2018-11-07 00:54:50,871 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-11-07 00:54:50,871 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates
[2018-11-07 00:54:53,189 INFO L227 lantSequenceWeakener]: Weakened 204 states. On average, predicates are now at 75.3% of their original sizes.
[2018-11-07 00:54:53,189 INFO L413 sIntCurrentIteration]: Unifying AI predicates
[2018-11-07 00:54:53,682 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211
[2018-11-07 00:54:53,683 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates
[2018-11-07 00:54:53,684 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-11-07 00:54:53,684 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11
[2018-11-07 00:54:53,684 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-11-07 00:54:53,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-11-07 00:54:53,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-11-07 00:54:53,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2018-11-07 00:54:53,685 INFO L87 Difference]: Start difference. First operand 83981 states and 108220 transitions. Second operand 7 states.
[2018-11-07 00:55:03,402 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.
Received shutdown request...
[2018-11-07 00:55:41,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2018-11-07 00:55:41,308 WARN L549 AbstractCegarLoop]: Verification canceled
[2018-11-07 00:55:41,314 WARN L205 ceAbstractionStarter]: Timeout
[2018-11-07 00:55:41,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:55:41 BoogieIcfgContainer
[2018-11-07 00:55:41,314 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-11-07 00:55:41,315 INFO L168 Benchmark]: Toolchain (without parser) took 196764.52 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB.
[2018-11-07 00:55:41,316 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-11-07 00:55:41,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3668.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 996.8 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB.
[2018-11-07 00:55:41,318 INFO L168 Benchmark]: Boogie Procedure Inliner took 523.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 838.9 MB). Free memory was 996.8 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 109.5 MB. Max. memory is 7.1 GB.
[2018-11-07 00:55:41,319 INFO L168 Benchmark]: Boogie Preprocessor took 549.69 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB.
[2018-11-07 00:55:41,320 INFO L168 Benchmark]: RCFGBuilder took 16966.96 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 152.6 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 522.0 MB). Peak memory consumption was 674.5 MB. Max. memory is 7.1 GB.
[2018-11-07 00:55:41,321 INFO L168 Benchmark]: TraceAbstraction took 175050.32 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -812.3 MB). Peak memory consumption was 661.0 MB. Max. memory is 7.1 GB.
[2018-11-07 00:55:41,326 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 3668.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 996.8 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB.
* Boogie Procedure Inliner took 523.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 838.9 MB). Free memory was 996.8 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 109.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 549.69 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 51.5 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 16966.96 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 152.6 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 522.0 MB). Peak memory consumption was 674.5 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 175050.32 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: -812.3 MB). Peak memory consumption was 661.0 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction)
Unable to prove that call of __VERIFIER_error() unreachable (line 88). Cancelled while BasicCegarLoop was constructing difference of abstraction (83981states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (16296 states constructedinput type IntersectNwa).
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 174.9s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 160.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3448 SDtfs, 37874 SDslu, 4362 SDs, 0 SdLazy, 58232 SolverSat, 14861 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 266 GetRequests, 221 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83981occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9954064892453517 AbsIntWeakeningRatio, 0.12796208530805686 AbsIntAvgWeakeningVarsNumRemoved, 1041.5734597156397 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 2177 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 891 NumberOfCodeBlocks, 891 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 884 ConstructedInterpolants, 0 QuantifiedInterpolants, 562931 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 173/258 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown