java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem03_label06_true-unreach-call.c


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


This is Ultimate 0.1.23-0fd1304
[2018-10-23 23:33:17,708 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-10-23 23:33:17,711 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-10-23 23:33:17,726 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-10-23 23:33:17,726 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-10-23 23:33:17,728 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-10-23 23:33:17,729 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-10-23 23:33:17,731 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-10-23 23:33:17,733 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-10-23 23:33:17,734 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-10-23 23:33:17,735 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-10-23 23:33:17,735 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-10-23 23:33:17,737 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-10-23 23:33:17,738 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-10-23 23:33:17,739 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-10-23 23:33:17,740 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-10-23 23:33:17,741 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-10-23 23:33:17,746 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-10-23 23:33:17,754 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-10-23 23:33:17,756 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-10-23 23:33:17,757 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-10-23 23:33:17,759 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-10-23 23:33:17,765 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-10-23 23:33:17,765 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-10-23 23:33:17,765 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-10-23 23:33:17,766 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-10-23 23:33:17,768 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-10-23 23:33:17,769 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
[2018-10-23 23:33:17,769 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-10-23 23:33:17,774 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-10-23 23:33:17,774 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-10-23 23:33:17,776 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-10-23 23:33:17,776 INFO  L177        SettingsManager]: ReqParser provides no preferences, ignoring...
[2018-10-23 23:33:17,776 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
[2018-10-23 23:33:17,777 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-10-23 23:33:17,780 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-10-23 23:33:17,781 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf
[2018-10-23 23:33:17,818 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-10-23 23:33:17,818 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-23 23:33:17,820 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-23 23:33:17,820 INFO  L133        SettingsManager]:  * User list type=DISABLED
[2018-10-23 23:33:17,820 INFO  L133        SettingsManager]:  * calls to implemented procedures=false
[2018-10-23 23:33:17,820 INFO  L131        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-10-23 23:33:17,820 INFO  L133        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2018-10-23 23:33:17,821 INFO  L133        SettingsManager]:  * Abstract domain=CompoundDomain
[2018-10-23 23:33:17,821 INFO  L133        SettingsManager]:  * Log string format=TERM
[2018-10-23 23:33:17,821 INFO  L133        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2018-10-23 23:33:17,821 INFO  L133        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2018-10-23 23:33:17,822 INFO  L133        SettingsManager]:  * Interval Domain=false
[2018-10-23 23:33:17,822 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-23 23:33:17,823 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-10-23 23:33:17,823 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-10-23 23:33:17,823 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-10-23 23:33:17,823 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-23 23:33:17,823 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-10-23 23:33:17,824 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-10-23 23:33:17,824 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-10-23 23:33:17,824 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-23 23:33:17,824 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-10-23 23:33:17,824 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-10-23 23:33:17,825 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-10-23 23:33:17,825 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-23 23:33:17,825 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-23 23:33:17,826 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-10-23 23:33:17,826 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-23 23:33:17,826 INFO  L133        SettingsManager]:  * Trace refinement strategy=TAIPAN
[2018-10-23 23:33:17,826 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-23 23:33:17,826 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-23 23:33:17,827 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-23 23:33:17,827 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-10-23 23:33:17,827 INFO  L133        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2018-10-23 23:33:17,880 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-23 23:33:17,896 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-23 23:33:17,902 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-23 23:33:17,904 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-10-23 23:33:17,905 INFO  L276        PluginConnector]: CDTParser initialized
[2018-10-23 23:33:17,906 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label06_true-unreach-call.c
[2018-10-23 23:33:17,991 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2b356cd66/b2ee584f9a4f4d27bc2eb5caf86e4d67/FLAGd3d174fb9
[2018-10-23 23:33:18,792 INFO  L298              CDTParser]: Found 1 translation units.
[2018-10-23 23:33:18,793 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label06_true-unreach-call.c
[2018-10-23 23:33:18,812 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2b356cd66/b2ee584f9a4f4d27bc2eb5caf86e4d67/FLAGd3d174fb9
[2018-10-23 23:33:18,830 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2b356cd66/b2ee584f9a4f4d27bc2eb5caf86e4d67
[2018-10-23 23:33:18,843 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-23 23:33:18,844 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-10-23 23:33:18,846 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-10-23 23:33:18,846 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-10-23 23:33:18,850 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-10-23 23:33:18,851 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:33:18" (1/1) ...
[2018-10-23 23:33:18,855 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4aab1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:18, skipping insertion in model container
[2018-10-23 23:33:18,855 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:33:18" (1/1) ...
[2018-10-23 23:33:18,866 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-10-23 23:33:18,955 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-10-23 23:33:19,674 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-23 23:33:19,681 INFO  L189         MainTranslator]: Completed pre-run
[2018-10-23 23:33:19,978 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-23 23:33:20,004 INFO  L193         MainTranslator]: Completed translation
[2018-10-23 23:33:20,005 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:20 WrapperNode
[2018-10-23 23:33:20,005 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-10-23 23:33:20,006 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-23 23:33:20,006 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-23 23:33:20,006 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-23 23:33:20,018 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:20" (1/1) ...
[2018-10-23 23:33:20,072 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:20" (1/1) ...
[2018-10-23 23:33:20,362 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-23 23:33:20,363 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-23 23:33:20,363 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-23 23:33:20,363 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-10-23 23:33:20,375 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:20" (1/1) ...
[2018-10-23 23:33:20,375 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:20" (1/1) ...
[2018-10-23 23:33:20,384 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:20" (1/1) ...
[2018-10-23 23:33:20,384 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:20" (1/1) ...
[2018-10-23 23:33:20,434 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:20" (1/1) ...
[2018-10-23 23:33:20,459 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:20" (1/1) ...
[2018-10-23 23:33:20,477 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:20" (1/1) ...
[2018-10-23 23:33:20,499 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-23 23:33:20,500 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-23 23:33:20,500 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-10-23 23:33:20,500 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-10-23 23:33:20,501 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:20" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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
[2018-10-23 23:33:20,574 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-10-23 23:33:20,574 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-10-23 23:33:20,574 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2018-10-23 23:33:20,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2018-10-23 23:33:20,575 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-10-23 23:33:20,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-10-23 23:33:20,575 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-10-23 23:33:20,575 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-10-23 23:33:25,652 INFO  L341             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-10-23 23:33:25,655 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:33:25 BoogieIcfgContainer
[2018-10-23 23:33:25,655 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-23 23:33:25,659 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-23 23:33:25,659 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-10-23 23:33:25,663 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-10-23 23:33:25,664 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:33:18" (1/3) ...
[2018-10-23 23:33:25,665 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:33:25, skipping insertion in model container
[2018-10-23 23:33:25,665 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:33:20" (2/3) ...
[2018-10-23 23:33:25,666 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e2721cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:33:25, skipping insertion in model container
[2018-10-23 23:33:25,666 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:33:25" (3/3) ...
[2018-10-23 23:33:25,670 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem03_label06_true-unreach-call.c
[2018-10-23 23:33:25,681 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-23 23:33:25,700 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-23 23:33:25,725 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-10-23 23:33:25,787 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-10-23 23:33:25,787 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-10-23 23:33:25,787 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-23 23:33:25,787 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-23 23:33:25,788 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-23 23:33:25,788 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-10-23 23:33:25,788 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-23 23:33:25,788 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-23 23:33:25,822 INFO  L276                IsEmpty]: Start isEmpty. Operand 312 states.
[2018-10-23 23:33:25,842 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 177
[2018-10-23 23:33:25,842 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 23:33:25,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 23:33:25,846 INFO  L424      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 23:33:25,853 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 23:33:25,853 INFO  L82        PathProgramCache]: Analyzing trace with hash 1227747913, now seen corresponding path program 1 times
[2018-10-23 23:33:25,856 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-23 23:33:25,904 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 23:33:25,904 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 23:33:25,904 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 23:33:25,905 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-23 23:33:26,246 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 23:33:26,811 WARN  L179               SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-10-23 23:33:27,054 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 23:33:27,057 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 23:33:27,058 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-23 23:33:27,058 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-23 23:33:27,065 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-23 23:33:27,083 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-23 23:33:27,084 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 23:33:27,088 INFO  L87              Difference]: Start difference. First operand 312 states. Second operand 3 states.
[2018-10-23 23:33:29,316 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 23:33:29,317 INFO  L93              Difference]: Finished difference Result 848 states and 1491 transitions.
[2018-10-23 23:33:29,317 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-23 23:33:29,319 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 176
[2018-10-23 23:33:29,320 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 23:33:29,347 INFO  L225             Difference]: With dead ends: 848
[2018-10-23 23:33:29,349 INFO  L226             Difference]: Without dead ends: 534
[2018-10-23 23:33:29,366 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 23:33:29,394 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 534 states.
[2018-10-23 23:33:29,514 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532.
[2018-10-23 23:33:29,516 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 532 states.
[2018-10-23 23:33:29,523 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions.
[2018-10-23 23:33:29,529 INFO  L78                 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 176
[2018-10-23 23:33:29,530 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 23:33:29,530 INFO  L481      AbstractCegarLoop]: Abstraction has 532 states and 867 transitions.
[2018-10-23 23:33:29,531 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-23 23:33:29,531 INFO  L276                IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions.
[2018-10-23 23:33:29,554 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 190
[2018-10-23 23:33:29,554 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 23:33:29,555 INFO  L375         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 23:33:29,555 INFO  L424      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 23:33:29,556 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 23:33:29,556 INFO  L82        PathProgramCache]: Analyzing trace with hash -602299443, now seen corresponding path program 1 times
[2018-10-23 23:33:29,556 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-23 23:33:29,560 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 23:33:29,561 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 23:33:29,561 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 23:33:29,561 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-23 23:33:29,694 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 23:33:30,184 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 23:33:30,185 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 23:33:30,185 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-23 23:33:30,185 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-23 23:33:30,188 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-23 23:33:30,190 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-23 23:33:30,190 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 23:33:30,191 INFO  L87              Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states.
[2018-10-23 23:33:32,486 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 23:33:32,487 INFO  L93              Difference]: Finished difference Result 1493 states and 2512 transitions.
[2018-10-23 23:33:32,487 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-23 23:33:32,487 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 189
[2018-10-23 23:33:32,487 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 23:33:32,499 INFO  L225             Difference]: With dead ends: 1493
[2018-10-23 23:33:32,499 INFO  L226             Difference]: Without dead ends: 967
[2018-10-23 23:33:32,503 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 23:33:32,505 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 967 states.
[2018-10-23 23:33:32,538 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 951.
[2018-10-23 23:33:32,539 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 951 states.
[2018-10-23 23:33:32,545 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1540 transitions.
[2018-10-23 23:33:32,545 INFO  L78                 Accepts]: Start accepts. Automaton has 951 states and 1540 transitions. Word has length 189
[2018-10-23 23:33:32,546 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 23:33:32,546 INFO  L481      AbstractCegarLoop]: Abstraction has 951 states and 1540 transitions.
[2018-10-23 23:33:32,546 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-23 23:33:32,546 INFO  L276                IsEmpty]: Start isEmpty. Operand 951 states and 1540 transitions.
[2018-10-23 23:33:32,554 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 205
[2018-10-23 23:33:32,554 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 23:33:32,554 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 23:33:32,555 INFO  L424      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 23:33:32,555 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 23:33:32,555 INFO  L82        PathProgramCache]: Analyzing trace with hash -1117769588, now seen corresponding path program 1 times
[2018-10-23 23:33:32,555 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-23 23:33:32,557 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 23:33:32,557 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 23:33:32,557 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 23:33:32,557 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-23 23:33:32,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 23:33:32,822 WARN  L179               SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-10-23 23:33:33,092 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 23:33:33,092 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 23:33:33,093 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-10-23 23:33:33,093 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-23 23:33:33,094 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-10-23 23:33:33,094 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-10-23 23:33:33,094 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2018-10-23 23:33:33,095 INFO  L87              Difference]: Start difference. First operand 951 states and 1540 transitions. Second operand 6 states.
[2018-10-23 23:33:36,314 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 23:33:36,314 INFO  L93              Difference]: Finished difference Result 2784 states and 4694 transitions.
[2018-10-23 23:33:36,315 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-23 23:33:36,315 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 204
[2018-10-23 23:33:36,315 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 23:33:36,331 INFO  L225             Difference]: With dead ends: 2784
[2018-10-23 23:33:36,331 INFO  L226             Difference]: Without dead ends: 1839
[2018-10-23 23:33:36,337 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2018-10-23 23:33:36,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1839 states.
[2018-10-23 23:33:36,423 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1809.
[2018-10-23 23:33:36,423 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1809 states.
[2018-10-23 23:33:36,436 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1809 states to 1809 states and 2782 transitions.
[2018-10-23 23:33:36,437 INFO  L78                 Accepts]: Start accepts. Automaton has 1809 states and 2782 transitions. Word has length 204
[2018-10-23 23:33:36,437 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 23:33:36,437 INFO  L481      AbstractCegarLoop]: Abstraction has 1809 states and 2782 transitions.
[2018-10-23 23:33:36,437 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-10-23 23:33:36,437 INFO  L276                IsEmpty]: Start isEmpty. Operand 1809 states and 2782 transitions.
[2018-10-23 23:33:36,447 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 224
[2018-10-23 23:33:36,448 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 23:33:36,448 INFO  L375         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 23:33:36,449 INFO  L424      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 23:33:36,449 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 23:33:36,449 INFO  L82        PathProgramCache]: Analyzing trace with hash -356667913, now seen corresponding path program 1 times
[2018-10-23 23:33:36,449 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-23 23:33:36,450 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 23:33:36,452 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 23:33:36,452 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 23:33:36,452 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-23 23:33:36,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 23:33:36,852 INFO  L134       CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 23:33:36,853 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-23 23:33:36,853 INFO  L194   anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION
[2018-10-23 23:33:36,854 INFO  L200      CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: 
[2018-10-23 23:33:36,857 INFO  L202      CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [869], [871], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187]
[2018-10-23 23:33:36,959 INFO  L148    AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain]
[2018-10-23 23:33:36,960 INFO  L101         FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2)
Received shutdown request...
[2018-10-23 23:37:53,868 WARN  L572         FixpointEngine]: Received timeout, aborting fixpoint engine
[2018-10-23 23:37:53,869 WARN  L158    AbstractInterpreter]: Abstract interpretation run out of time
[2018-10-23 23:37:53,871 INFO  L422   seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints
[2018-10-23 23:37:53,871 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-23 23:37:53,871 INFO  L194   anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-23 23:37:53,887 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 23:37:53,887 INFO  L288   anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-10-23 23:37:54,104 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 23:37:54,141 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-23 23:37:54,183 INFO  L177         TraceCheckSpWp]: Timeout while computing interpolants
[2018-10-23 23:37:54,385 WARN  L522      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-23 23:37:54,386 WARN  L550      AbstractCegarLoop]: Verification canceled
[2018-10-23 23:37:54,392 WARN  L205   ceAbstractionStarter]: Timeout
[2018-10-23 23:37:54,393 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:37:54 BoogieIcfgContainer
[2018-10-23 23:37:54,393 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-23 23:37:54,394 INFO  L168              Benchmark]: Toolchain (without parser) took 275550.95 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.4 GB in the end (delta: -1.0 GB). Peak memory consumption was 120.1 MB. Max. memory is 7.1 GB.
[2018-10-23 23:37:54,395 INFO  L168              Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-23 23:37:54,396 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 1159.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB.
[2018-10-23 23:37:54,397 INFO  L168              Benchmark]: Boogie Procedure Inliner took 356.39 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.0 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -834.6 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB.
[2018-10-23 23:37:54,398 INFO  L168              Benchmark]: Boogie Preprocessor took 136.58 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB.
[2018-10-23 23:37:54,399 INFO  L168              Benchmark]: RCFGBuilder took 5155.72 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 268.1 MB). Peak memory consumption was 268.1 MB. Max. memory is 7.1 GB.
[2018-10-23 23:37:54,400 INFO  L168              Benchmark]: TraceAbstraction took 268734.60 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 407.4 MB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -532.7 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-23 23:37:54,405 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 1159.71 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 356.39 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 713.0 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -834.6 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 136.58 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 5155.72 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 268.1 MB). Peak memory consumption was 268.1 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 268734.60 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 407.4 MB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -532.7 MB). There was no memory consumed. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 1542]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 1542). Cancelled while BasicCegarLoop was analyzing trace of length 224 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 268.6s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 7.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 535 SDtfs, 1391 SDslu, 292 SDs, 0 SdLazy, 2390 SolverSat, 793 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1809occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 257.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 48 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 569 NumberOfCodeBlocks, 569 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 566 ConstructedInterpolants, 0 QuantifiedInterpolants, 296170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 35/35 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown