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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label34_true-unreach-call.c


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


This is Ultimate 0.1.23-3142e50-m
[2018-09-10 10:55:32,696 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-09-10 10:55:32,698 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-09-10 10:55:32,710 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-09-10 10:55:32,710 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-09-10 10:55:32,712 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-09-10 10:55:32,713 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-09-10 10:55:32,714 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-09-10 10:55:32,716 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-09-10 10:55:32,717 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-09-10 10:55:32,718 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-09-10 10:55:32,718 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-09-10 10:55:32,719 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-09-10 10:55:32,720 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-09-10 10:55:32,721 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-09-10 10:55:32,722 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-09-10 10:55:32,723 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-09-10 10:55:32,725 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-09-10 10:55:32,727 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-09-10 10:55:32,729 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-09-10 10:55:32,730 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-09-10 10:55:32,731 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-09-10 10:55:32,734 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-09-10 10:55:32,734 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-09-10 10:55:32,734 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-09-10 10:55:32,735 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-09-10 10:55:32,736 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-09-10 10:55:32,737 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
[2018-09-10 10:55:32,738 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-09-10 10:55:32,739 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-09-10 10:55:32,739 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-09-10 10:55:32,740 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-09-10 10:55:32,740 INFO  L177        SettingsManager]: ReqParser provides no preferences, ignoring...
[2018-09-10 10:55:32,741 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
[2018-09-10 10:55:32,742 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-09-10 10:55:32,743 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-09-10 10:55:32,743 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf
[2018-09-10 10:55:32,758 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-09-10 10:55:32,759 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-09-10 10:55:32,759 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-09-10 10:55:32,760 INFO  L133        SettingsManager]:  * User list type=DISABLED
[2018-09-10 10:55:32,760 INFO  L133        SettingsManager]:  * calls to implemented procedures=false
[2018-09-10 10:55:32,760 INFO  L131        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-09-10 10:55:32,760 INFO  L133        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2018-09-10 10:55:32,760 INFO  L133        SettingsManager]:  * Abstract domain=CompoundDomain
[2018-09-10 10:55:32,761 INFO  L133        SettingsManager]:  * Log string format=TERM
[2018-09-10 10:55:32,761 INFO  L133        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2018-09-10 10:55:32,761 INFO  L133        SettingsManager]:  * Interval Domain=false
[2018-09-10 10:55:32,762 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-09-10 10:55:32,762 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-09-10 10:55:32,762 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-09-10 10:55:32,762 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-09-10 10:55:32,763 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-09-10 10:55:32,763 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-09-10 10:55:32,763 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-09-10 10:55:32,763 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-09-10 10:55:32,763 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-09-10 10:55:32,764 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-09-10 10:55:32,764 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-09-10 10:55:32,764 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-09-10 10:55:32,764 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-09-10 10:55:32,765 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-09-10 10:55:32,765 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-09-10 10:55:32,765 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-09-10 10:55:32,765 INFO  L133        SettingsManager]:  * Trace refinement strategy=RUBBER_TAIPAN
[2018-09-10 10:55:32,765 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-09-10 10:55:32,766 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-09-10 10:55:32,766 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-09-10 10:55:32,766 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-09-10 10:55:32,766 INFO  L133        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2018-09-10 10:55:32,809 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-09-10 10:55:32,822 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-09-10 10:55:32,827 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-09-10 10:55:32,829 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-09-10 10:55:32,829 INFO  L276        PluginConnector]: CDTParser initialized
[2018-09-10 10:55:32,830 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label34_true-unreach-call.c
[2018-09-10 10:55:33,224 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12cdfaf1d/b77c42e9f61a4fb3ad1f479b67720305/FLAGf7c61d9ff
[2018-09-10 10:55:33,878 INFO  L276              CDTParser]: Found 1 translation units.
[2018-09-10 10:55:33,879 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label34_true-unreach-call.c
[2018-09-10 10:55:33,951 INFO  L324              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12cdfaf1d/b77c42e9f61a4fb3ad1f479b67720305/FLAGf7c61d9ff
[2018-09-10 10:55:33,972 INFO  L332              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12cdfaf1d/b77c42e9f61a4fb3ad1f479b67720305
[2018-09-10 10:55:33,986 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-09-10 10:55:33,993 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-09-10 10:55:33,994 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-09-10 10:55:33,995 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-09-10 10:55:34,005 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-09-10 10:55:34,006 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:55:33" (1/1) ...
[2018-09-10 10:55:34,010 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a9e2d9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:34, skipping insertion in model container
[2018-09-10 10:55:34,010 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:55:33" (1/1) ...
[2018-09-10 10:55:34,470 INFO  L180           PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode 
[2018-09-10 10:55:36,085 INFO  L175          PostProcessor]: Settings: Checked method=main
[2018-09-10 10:55:36,106 INFO  L431         MainDispatcher]: Starting main dispatcher in SV-COMP mode 
[2018-09-10 10:55:37,343 INFO  L175          PostProcessor]: Settings: Checked method=main
[2018-09-10 10:55:37,656 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:37 WrapperNode
[2018-09-10 10:55:37,656 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-09-10 10:55:37,657 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-09-10 10:55:37,658 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-09-10 10:55:37,658 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-09-10 10:55:37,669 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:37" (1/1) ...
[2018-09-10 10:55:37,970 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:37" (1/1) ...
[2018-09-10 10:55:38,041 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-09-10 10:55:38,042 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-09-10 10:55:38,042 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-09-10 10:55:38,042 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-09-10 10:55:38,695 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:37" (1/1) ...
[2018-09-10 10:55:38,695 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:37" (1/1) ...
[2018-09-10 10:55:38,753 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:37" (1/1) ...
[2018-09-10 10:55:38,754 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:37" (1/1) ...
[2018-09-10 10:55:38,940 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:37" (1/1) ...
[2018-09-10 10:55:38,999 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:37" (1/1) ...
[2018-09-10 10:55:39,097 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:37" (1/1) ...
[2018-09-10 10:55:39,164 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-09-10 10:55:39,164 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-09-10 10:55:39,164 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-09-10 10:55:39,164 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-09-10 10:55:39,167 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:37" (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
[2018-09-10 10:55:39,237 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-09-10 10:55:39,237 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-09-10 10:55:39,237 INFO  L130     BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5
[2018-09-10 10:55:39,238 INFO  L138     BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5
[2018-09-10 10:55:39,238 INFO  L130     BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output
[2018-09-10 10:55:39,238 INFO  L138     BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output
[2018-09-10 10:55:39,238 INFO  L130     BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3
[2018-09-10 10:55:39,238 INFO  L138     BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3
[2018-09-10 10:55:39,238 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-09-10 10:55:39,239 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-09-10 10:55:39,239 INFO  L130     BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4
[2018-09-10 10:55:39,239 INFO  L138     BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4
[2018-09-10 10:55:39,239 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-09-10 10:55:39,239 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-09-10 10:55:39,241 INFO  L130     BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2
[2018-09-10 10:55:39,241 INFO  L138     BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2
[2018-09-10 10:55:53,662 INFO  L353             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-09-10 10:55:53,663 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:55:53 BoogieIcfgContainer
[2018-09-10 10:55:53,663 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-09-10 10:55:53,664 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-09-10 10:55:53,664 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-09-10 10:55:53,668 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-09-10 10:55:53,668 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:55:33" (1/3) ...
[2018-09-10 10:55:53,669 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72df12db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:55:53, skipping insertion in model container
[2018-09-10 10:55:53,669 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:55:37" (2/3) ...
[2018-09-10 10:55:53,670 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72df12db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:55:53, skipping insertion in model container
[2018-09-10 10:55:53,670 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:55:53" (3/3) ...
[2018-09-10 10:55:53,673 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem06_label34_true-unreach-call.c
[2018-09-10 10:55:53,682 INFO  L137   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-09-10 10:55:53,694 INFO  L149   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-09-10 10:55:53,776 INFO  L130   ementStrategyFactory]: Using default assertion order modulation
[2018-09-10 10:55:53,777 INFO  L381      AbstractCegarLoop]: Interprodecural is true
[2018-09-10 10:55:53,777 INFO  L382      AbstractCegarLoop]: Hoare is true
[2018-09-10 10:55:53,777 INFO  L383      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-09-10 10:55:53,777 INFO  L384      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-09-10 10:55:53,778 INFO  L385      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-09-10 10:55:53,778 INFO  L386      AbstractCegarLoop]: Difference is false
[2018-09-10 10:55:53,778 INFO  L387      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-09-10 10:55:53,778 INFO  L392      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-09-10 10:55:53,839 INFO  L276                IsEmpty]: Start isEmpty. Operand 1316 states.
[2018-09-10 10:55:53,911 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 995
[2018-09-10 10:55:53,911 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-10 10:55:53,913 INFO  L376         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-10 10:55:53,915 INFO  L423      AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-10 10:55:53,921 INFO  L82        PathProgramCache]: Analyzing trace with hash 465769146, now seen corresponding path program 1 times
[2018-09-10 10:55:53,924 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-10 10:55:53,980 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:55:53,980 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:55:53,981 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:55:53,981 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-10 10:55:54,623 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:55:56,161 WARN  L175               SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-09-10 10:55:57,429 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:55:57,431 INFO  L313   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-10 10:55:57,431 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-09-10 10:55:57,432 INFO  L265   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-10 10:55:57,438 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-09-10 10:55:57,451 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-09-10 10:55:57,451 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-09-10 10:55:57,453 INFO  L87              Difference]: Start difference. First operand 1316 states. Second operand 3 states.
[2018-09-10 10:56:06,699 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-10 10:56:06,699 INFO  L93              Difference]: Finished difference Result 3736 states and 7002 transitions.
[2018-09-10 10:56:06,701 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-09-10 10:56:06,702 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 994
[2018-09-10 10:56:06,707 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-10 10:56:06,749 INFO  L225             Difference]: With dead ends: 3736
[2018-09-10 10:56:06,749 INFO  L226             Difference]: Without dead ends: 2418
[2018-09-10 10:56:06,759 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-09-10 10:56:06,782 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2418 states.
[2018-09-10 10:56:06,934 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2366.
[2018-09-10 10:56:06,935 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2366 states.
[2018-09-10 10:56:06,949 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 4373 transitions.
[2018-09-10 10:56:06,952 INFO  L78                 Accepts]: Start accepts. Automaton has 2366 states and 4373 transitions. Word has length 994
[2018-09-10 10:56:06,956 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-10 10:56:06,956 INFO  L480      AbstractCegarLoop]: Abstraction has 2366 states and 4373 transitions.
[2018-09-10 10:56:06,956 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-09-10 10:56:06,956 INFO  L276                IsEmpty]: Start isEmpty. Operand 2366 states and 4373 transitions.
[2018-09-10 10:56:07,058 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1008
[2018-09-10 10:56:07,058 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-10 10:56:07,059 INFO  L376         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-10 10:56:07,060 INFO  L423      AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-10 10:56:07,061 INFO  L82        PathProgramCache]: Analyzing trace with hash 614449446, now seen corresponding path program 1 times
[2018-09-10 10:56:07,061 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-10 10:56:07,062 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:56:07,063 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:56:07,063 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:56:07,063 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-10 10:56:07,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:56:09,541 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:56:09,541 INFO  L313   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-10 10:56:09,541 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-09-10 10:56:09,541 INFO  L265   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-10 10:56:09,544 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-09-10 10:56:09,545 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-09-10 10:56:09,545 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-09-10 10:56:09,545 INFO  L87              Difference]: Start difference. First operand 2366 states and 4373 transitions. Second operand 4 states.
[2018-09-10 10:56:23,818 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-10 10:56:23,818 INFO  L93              Difference]: Finished difference Result 8929 states and 16963 transitions.
[2018-09-10 10:56:23,827 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-09-10 10:56:23,828 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1007
[2018-09-10 10:56:23,831 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-10 10:56:23,879 INFO  L225             Difference]: With dead ends: 8929
[2018-09-10 10:56:23,879 INFO  L226             Difference]: Without dead ends: 6569
[2018-09-10 10:56:23,890 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-09-10 10:56:23,898 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6569 states.
[2018-09-10 10:56:24,054 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6569 to 6535.
[2018-09-10 10:56:24,055 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6535 states.
[2018-09-10 10:56:24,081 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 11102 transitions.
[2018-09-10 10:56:24,081 INFO  L78                 Accepts]: Start accepts. Automaton has 6535 states and 11102 transitions. Word has length 1007
[2018-09-10 10:56:24,083 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-10 10:56:24,083 INFO  L480      AbstractCegarLoop]: Abstraction has 6535 states and 11102 transitions.
[2018-09-10 10:56:24,083 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-09-10 10:56:24,084 INFO  L276                IsEmpty]: Start isEmpty. Operand 6535 states and 11102 transitions.
[2018-09-10 10:56:24,116 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1042
[2018-09-10 10:56:24,116 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-10 10:56:24,117 INFO  L376         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-10 10:56:24,117 INFO  L423      AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-10 10:56:24,118 INFO  L82        PathProgramCache]: Analyzing trace with hash 1542767417, now seen corresponding path program 1 times
[2018-09-10 10:56:24,118 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-10 10:56:24,119 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:56:24,119 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:56:24,120 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:56:24,120 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-10 10:56:24,226 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:56:25,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:56:25,209 INFO  L301   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-10 10:56:25,209 INFO  L197   anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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
[2018-09-10 10:56:25,224 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:56:25,224 INFO  L295   anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-10 10:56:25,933 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:56:25,988 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-09-10 10:56:26,801 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:56:26,802 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-09-10 10:56:27,002 WARN  L175               SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8
[2018-09-10 10:56:28,134 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:56:28,159 INFO  L301   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-10 10:56:28,159 INFO  L197   anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-10 10:56:28,176 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:56:28,176 INFO  L295   anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-10 10:56:29,747 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:56:29,821 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-09-10 10:56:30,400 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:56:30,400 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-09-10 10:56:31,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:56:31,182 INFO  L313   seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-10 10:56:31,184 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12
[2018-09-10 10:56:31,184 INFO  L258   anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-10 10:56:31,186 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-09-10 10:56:31,187 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-09-10 10:56:31,187 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132
[2018-09-10 10:56:31,187 INFO  L87              Difference]: Start difference. First operand 6535 states and 11102 transitions. Second operand 9 states.
[2018-09-10 10:56:33,537 WARN  L175               SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 9
[2018-09-10 10:56:56,640 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-10 10:56:56,641 INFO  L93              Difference]: Finished difference Result 20390 states and 35979 transitions.
[2018-09-10 10:56:56,647 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2018-09-10 10:56:56,648 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 1041
[2018-09-10 10:56:56,648 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-10 10:56:56,727 INFO  L225             Difference]: With dead ends: 20390
[2018-09-10 10:56:56,727 INFO  L226             Difference]: Without dead ends: 13861
[2018-09-10 10:56:56,753 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 4191 GetRequests, 4161 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702
[2018-09-10 10:56:56,767 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13861 states.
[2018-09-10 10:56:57,104 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13861 to 13662.
[2018-09-10 10:56:57,105 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 13662 states.
[2018-09-10 10:56:57,146 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13662 states to 13662 states and 20996 transitions.
[2018-09-10 10:56:57,147 INFO  L78                 Accepts]: Start accepts. Automaton has 13662 states and 20996 transitions. Word has length 1041
[2018-09-10 10:56:57,147 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-10 10:56:57,147 INFO  L480      AbstractCegarLoop]: Abstraction has 13662 states and 20996 transitions.
[2018-09-10 10:56:57,148 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-09-10 10:56:57,148 INFO  L276                IsEmpty]: Start isEmpty. Operand 13662 states and 20996 transitions.
[2018-09-10 10:56:57,212 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1051
[2018-09-10 10:56:57,213 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-10 10:56:57,214 INFO  L376         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-10 10:56:57,214 INFO  L423      AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-10 10:56:57,215 INFO  L82        PathProgramCache]: Analyzing trace with hash -1184227967, now seen corresponding path program 1 times
[2018-09-10 10:56:57,215 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-10 10:56:57,216 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:56:57,216 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:56:57,216 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:56:57,216 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-10 10:56:57,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:56:57,845 WARN  L175               SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4
[2018-09-10 10:56:58,599 INFO  L134       CoverageAnalysis]: Checked inductivity of 79 backedges. 53 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-09-10 10:56:58,600 INFO  L301   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-10 10:56:58,600 INFO  L197   anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-10 10:56:58,609 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:56:58,609 INFO  L295   anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-10 10:56:59,295 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:56:59,323 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-09-10 10:57:00,624 INFO  L134       CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2018-09-10 10:57:00,625 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-09-10 10:57:00,855 WARN  L175               SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8
[2018-09-10 10:57:00,960 WARN  L175               SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8
[2018-09-10 10:57:01,704 INFO  L134       CoverageAnalysis]: Checked inductivity of 79 backedges. 59 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2018-09-10 10:57:01,727 INFO  L301   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-10 10:57:01,728 INFO  L197   anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-10 10:57:01,744 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:57:01,744 INFO  L295   anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-10 10:57:03,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:57:03,284 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-09-10 10:57:04,324 INFO  L134       CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2018-09-10 10:57:04,324 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-09-10 10:57:05,004 INFO  L134       CoverageAnalysis]: Checked inductivity of 79 backedges. 59 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2018-09-10 10:57:05,008 INFO  L313   seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-10 10:57:05,010 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 19
[2018-09-10 10:57:05,010 INFO  L258   anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-10 10:57:05,012 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2018-09-10 10:57:05,012 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2018-09-10 10:57:05,012 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342
[2018-09-10 10:57:05,013 INFO  L87              Difference]: Start difference. First operand 13662 states and 20996 transitions. Second operand 12 states.
[2018-09-10 10:58:55,737 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-10 10:58:55,737 INFO  L93              Difference]: Finished difference Result 275616 states and 968452 transitions.
[2018-09-10 10:58:55,738 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. 
[2018-09-10 10:58:55,738 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 1050
[2018-09-10 10:58:55,738 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-10 10:59:00,141 INFO  L225             Difference]: With dead ends: 275616
[2018-09-10 10:59:00,141 INFO  L226             Difference]: Without dead ends: 261960
[2018-09-10 10:59:00,410 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 4490 GetRequests, 4330 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9952 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2712, Invalid=22728, Unknown=0, NotChecked=0, Total=25440
[2018-09-10 10:59:00,567 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 261960 states.
[2018-09-10 10:59:13,708 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 261960 to 256291.
[2018-09-10 10:59:13,708 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 256291 states.