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_label49_true-unreach-call.c


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


This is Ultimate 0.1.23-3142e50-m
[2018-09-10 10:57:54,223 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-09-10 10:57:54,225 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-09-10 10:57:54,237 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-09-10 10:57:54,238 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-09-10 10:57:54,239 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-09-10 10:57:54,240 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-09-10 10:57:54,244 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-09-10 10:57:54,247 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-09-10 10:57:54,253 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-09-10 10:57:54,254 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-09-10 10:57:54,255 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-09-10 10:57:54,261 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-09-10 10:57:54,262 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-09-10 10:57:54,263 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-09-10 10:57:54,265 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-09-10 10:57:54,267 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-09-10 10:57:54,270 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-09-10 10:57:54,275 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-09-10 10:57:54,276 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-09-10 10:57:54,279 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-09-10 10:57:54,280 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-09-10 10:57:54,284 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-09-10 10:57:54,284 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-09-10 10:57:54,285 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-09-10 10:57:54,286 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-09-10 10:57:54,287 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-09-10 10:57:54,290 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
[2018-09-10 10:57:54,291 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-09-10 10:57:54,293 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-09-10 10:57:54,294 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-09-10 10:57:54,295 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-09-10 10:57:54,295 INFO  L177        SettingsManager]: ReqParser provides no preferences, ignoring...
[2018-09-10 10:57:54,296 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
[2018-09-10 10:57:54,297 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-09-10 10:57:54,297 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-09-10 10:57:54,298 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 10:57:54,322 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-09-10 10:57:54,322 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-09-10 10:57:54,323 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-09-10 10:57:54,324 INFO  L133        SettingsManager]:  * User list type=DISABLED
[2018-09-10 10:57:54,324 INFO  L133        SettingsManager]:  * calls to implemented procedures=false
[2018-09-10 10:57:54,324 INFO  L131        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-09-10 10:57:54,324 INFO  L133        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2018-09-10 10:57:54,326 INFO  L133        SettingsManager]:  * Abstract domain=CompoundDomain
[2018-09-10 10:57:54,326 INFO  L133        SettingsManager]:  * Log string format=TERM
[2018-09-10 10:57:54,326 INFO  L133        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2018-09-10 10:57:54,326 INFO  L133        SettingsManager]:  * Interval Domain=false
[2018-09-10 10:57:54,327 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-09-10 10:57:54,327 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-09-10 10:57:54,328 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-09-10 10:57:54,328 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-09-10 10:57:54,328 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-09-10 10:57:54,328 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-09-10 10:57:54,328 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-09-10 10:57:54,329 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-09-10 10:57:54,329 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-09-10 10:57:54,329 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-09-10 10:57:54,329 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-09-10 10:57:54,331 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-09-10 10:57:54,332 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-09-10 10:57:54,332 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-09-10 10:57:54,332 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-09-10 10:57:54,332 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-09-10 10:57:54,333 INFO  L133        SettingsManager]:  * Trace refinement strategy=RUBBER_TAIPAN
[2018-09-10 10:57:54,333 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-09-10 10:57:54,333 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-09-10 10:57:54,333 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-09-10 10:57:54,333 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-09-10 10:57:54,333 INFO  L133        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2018-09-10 10:57:54,389 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-09-10 10:57:54,403 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-09-10 10:57:54,407 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-09-10 10:57:54,409 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-09-10 10:57:54,409 INFO  L276        PluginConnector]: CDTParser initialized
[2018-09-10 10:57:54,410 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label49_true-unreach-call.c
[2018-09-10 10:57:54,765 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a2ddd0d/1c2d54eb439f49c88051e23d5f322cc6/FLAGee5e4cd0c
[2018-09-10 10:57:55,460 INFO  L276              CDTParser]: Found 1 translation units.
[2018-09-10 10:57:55,461 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label49_true-unreach-call.c
[2018-09-10 10:57:55,526 INFO  L324              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a2ddd0d/1c2d54eb439f49c88051e23d5f322cc6/FLAGee5e4cd0c
[2018-09-10 10:57:55,544 INFO  L332              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88a2ddd0d/1c2d54eb439f49c88051e23d5f322cc6
[2018-09-10 10:57:55,555 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-09-10 10:57:55,559 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-09-10 10:57:55,560 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-09-10 10:57:55,560 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-09-10 10:57:55,567 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-09-10 10:57:55,568 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:57:55" (1/1) ...
[2018-09-10 10:57:55,572 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cdb4531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:55, skipping insertion in model container
[2018-09-10 10:57:55,572 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:57:55" (1/1) ...
[2018-09-10 10:57:56,010 INFO  L180           PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode 
[2018-09-10 10:57:57,871 INFO  L175          PostProcessor]: Settings: Checked method=main
[2018-09-10 10:57:57,899 INFO  L431         MainDispatcher]: Starting main dispatcher in SV-COMP mode 
[2018-09-10 10:57:59,278 INFO  L175          PostProcessor]: Settings: Checked method=main
[2018-09-10 10:57:59,593 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:59 WrapperNode
[2018-09-10 10:57:59,593 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-09-10 10:57:59,594 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-09-10 10:57:59,595 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-09-10 10:57:59,595 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-09-10 10:57:59,606 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:59" (1/1) ...
[2018-09-10 10:57:59,707 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:59" (1/1) ...
[2018-09-10 10:58:00,016 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-09-10 10:58:00,017 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-09-10 10:58:00,017 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-09-10 10:58:00,017 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-09-10 10:58:00,617 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:59" (1/1) ...
[2018-09-10 10:58:00,618 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:59" (1/1) ...
[2018-09-10 10:58:00,683 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:59" (1/1) ...
[2018-09-10 10:58:00,683 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:59" (1/1) ...
[2018-09-10 10:58:00,923 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:59" (1/1) ...
[2018-09-10 10:58:00,993 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:59" (1/1) ...
[2018-09-10 10:58:01,083 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:59" (1/1) ...
[2018-09-10 10:58:01,153 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-09-10 10:58:01,154 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-09-10 10:58:01,154 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-09-10 10:58:01,155 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-09-10 10:58:01,156 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:59" (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 10:58:01,231 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-09-10 10:58:01,231 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-09-10 10:58:01,231 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 10:58:01,231 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 10:58:01,232 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 10:58:01,232 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 10:58:01,232 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 10:58:01,232 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 10:58:01,232 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-09-10 10:58:01,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-09-10 10:58:01,233 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 10:58:01,233 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 10:58:01,233 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-09-10 10:58:01,233 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-09-10 10:58:01,235 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 10:58:01,235 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 10:58:14,799 INFO  L353             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-09-10 10:58:14,800 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:58:14 BoogieIcfgContainer
[2018-09-10 10:58:14,800 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-09-10 10:58:14,801 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-09-10 10:58:14,801 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-09-10 10:58:14,805 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-09-10 10:58:14,805 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:57:55" (1/3) ...
[2018-09-10 10:58:14,806 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11aa07ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:58:14, skipping insertion in model container
[2018-09-10 10:58:14,806 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:57:59" (2/3) ...
[2018-09-10 10:58:14,806 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11aa07ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:58:14, skipping insertion in model container
[2018-09-10 10:58:14,807 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:58:14" (3/3) ...
[2018-09-10 10:58:14,808 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem06_label49_true-unreach-call.c
[2018-09-10 10:58:14,819 INFO  L137   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-09-10 10:58:14,829 INFO  L149   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-09-10 10:58:14,906 INFO  L130   ementStrategyFactory]: Using default assertion order modulation
[2018-09-10 10:58:14,907 INFO  L381      AbstractCegarLoop]: Interprodecural is true
[2018-09-10 10:58:14,907 INFO  L382      AbstractCegarLoop]: Hoare is true
[2018-09-10 10:58:14,907 INFO  L383      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-09-10 10:58:14,907 INFO  L384      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-09-10 10:58:14,907 INFO  L385      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-09-10 10:58:14,907 INFO  L386      AbstractCegarLoop]: Difference is false
[2018-09-10 10:58:14,908 INFO  L387      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-09-10 10:58:14,908 INFO  L392      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-09-10 10:58:14,959 INFO  L276                IsEmpty]: Start isEmpty. Operand 1316 states.
[2018-09-10 10:58:15,037 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1006
[2018-09-10 10:58:15,037 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-10 10:58:15,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-10 10:58:15,041 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 10:58:15,047 INFO  L82        PathProgramCache]: Analyzing trace with hash -318199043, now seen corresponding path program 1 times
[2018-09-10 10:58:15,050 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-10 10:58:15,108 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:58:15,108 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:58:15,108 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:58:15,109 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-10 10:58:15,795 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:58:18,559 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 10:58:18,561 INFO  L313   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-10 10:58:18,561 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-09-10 10:58:18,561 INFO  L265   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-10 10:58:18,568 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-09-10 10:58:18,580 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-09-10 10:58:18,581 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-09-10 10:58:18,583 INFO  L87              Difference]: Start difference. First operand 1316 states. Second operand 3 states.
[2018-09-10 10:58:28,306 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-10 10:58:28,306 INFO  L93              Difference]: Finished difference Result 3747 states and 6996 transitions.
[2018-09-10 10:58:28,310 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-09-10 10:58:28,312 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1005
[2018-09-10 10:58:28,319 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-10 10:58:28,378 INFO  L225             Difference]: With dead ends: 3747
[2018-09-10 10:58:28,378 INFO  L226             Difference]: Without dead ends: 2429
[2018-09-10 10:58:28,391 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 10:58:28,413 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2429 states.
[2018-09-10 10:58:28,583 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 2407.
[2018-09-10 10:58:28,584 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2407 states.
[2018-09-10 10:58:28,598 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2407 states to 2407 states and 4264 transitions.
[2018-09-10 10:58:28,600 INFO  L78                 Accepts]: Start accepts. Automaton has 2407 states and 4264 transitions. Word has length 1005
[2018-09-10 10:58:28,604 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-10 10:58:28,604 INFO  L480      AbstractCegarLoop]: Abstraction has 2407 states and 4264 transitions.
[2018-09-10 10:58:28,605 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-09-10 10:58:28,605 INFO  L276                IsEmpty]: Start isEmpty. Operand 2407 states and 4264 transitions.
[2018-09-10 10:58:28,660 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1015
[2018-09-10 10:58:28,660 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-10 10:58:28,662 INFO  L376         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-10 10:58:28,662 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 10:58:28,663 INFO  L82        PathProgramCache]: Analyzing trace with hash 126607241, now seen corresponding path program 1 times
[2018-09-10 10:58:28,663 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-10 10:58:28,665 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:58:28,665 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:58:28,666 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:58:28,666 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-10 10:58:28,773 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:58:29,137 WARN  L175               SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-09-10 10:58:29,973 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:58:29,974 INFO  L313   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-10 10:58:29,974 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-09-10 10:58:29,975 INFO  L265   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-10 10:58:29,979 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-09-10 10:58:29,980 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-09-10 10:58:29,980 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-09-10 10:58:29,981 INFO  L87              Difference]: Start difference. First operand 2407 states and 4264 transitions. Second operand 5 states.
[2018-09-10 10:58:35,945 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-10 10:58:35,946 INFO  L93              Difference]: Finished difference Result 7230 states and 12898 transitions.
[2018-09-10 10:58:35,950 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-09-10 10:58:35,950 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1014
[2018-09-10 10:58:35,950 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-10 10:58:35,989 INFO  L225             Difference]: With dead ends: 7230
[2018-09-10 10:58:35,989 INFO  L226             Difference]: Without dead ends: 4829
[2018-09-10 10:58:35,998 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2018-09-10 10:58:36,004 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4829 states.
[2018-09-10 10:58:36,178 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4829 to 4765.
[2018-09-10 10:58:36,179 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4765 states.
[2018-09-10 10:58:36,201 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4765 states to 4765 states and 8477 transitions.
[2018-09-10 10:58:36,202 INFO  L78                 Accepts]: Start accepts. Automaton has 4765 states and 8477 transitions. Word has length 1014
[2018-09-10 10:58:36,202 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-10 10:58:36,203 INFO  L480      AbstractCegarLoop]: Abstraction has 4765 states and 8477 transitions.
[2018-09-10 10:58:36,203 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-09-10 10:58:36,203 INFO  L276                IsEmpty]: Start isEmpty. Operand 4765 states and 8477 transitions.
[2018-09-10 10:58:36,242 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1020
[2018-09-10 10:58:36,242 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-10 10:58:36,243 INFO  L376         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 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 10:58:36,244 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 10:58:36,244 INFO  L82        PathProgramCache]: Analyzing trace with hash -949474753, now seen corresponding path program 1 times
[2018-09-10 10:58:36,245 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-10 10:58:36,246 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:58:36,247 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:58:36,247 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:58:36,247 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-10 10:58:36,552 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:58:39,049 INFO  L134       CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:58:39,050 INFO  L313   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-10 10:58:39,050 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-09-10 10:58:39,050 INFO  L265   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-10 10:58:39,055 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-09-10 10:58:39,055 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-09-10 10:58:39,056 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-09-10 10:58:39,056 INFO  L87              Difference]: Start difference. First operand 4765 states and 8477 transitions. Second operand 3 states.
[2018-09-10 10:58:46,182 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-10 10:58:46,183 INFO  L93              Difference]: Finished difference Result 13725 states and 24965 transitions.
[2018-09-10 10:58:46,192 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-09-10 10:58:46,193 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1019
[2018-09-10 10:58:46,195 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-10 10:58:46,247 INFO  L225             Difference]: With dead ends: 13725
[2018-09-10 10:58:46,247 INFO  L226             Difference]: Without dead ends: 8966
[2018-09-10 10:58:46,264 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-09-10 10:58:46,274 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8966 states.
[2018-09-10 10:58:46,482 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8966 to 8938.
[2018-09-10 10:58:46,482 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8938 states.
[2018-09-10 10:58:46,734 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8938 states to 8938 states and 15028 transitions.
[2018-09-10 10:58:46,734 INFO  L78                 Accepts]: Start accepts. Automaton has 8938 states and 15028 transitions. Word has length 1019
[2018-09-10 10:58:46,738 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-10 10:58:46,738 INFO  L480      AbstractCegarLoop]: Abstraction has 8938 states and 15028 transitions.
[2018-09-10 10:58:46,738 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-09-10 10:58:46,738 INFO  L276                IsEmpty]: Start isEmpty. Operand 8938 states and 15028 transitions.
[2018-09-10 10:58:46,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1037
[2018-09-10 10:58:46,784 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-10 10:58:46,785 INFO  L376         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-10 10:58:46,785 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 10:58:46,787 INFO  L82        PathProgramCache]: Analyzing trace with hash 1131694999, now seen corresponding path program 1 times
[2018-09-10 10:58:46,787 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-10 10:58:46,788 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:58:46,788 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:58:46,788 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:58:46,788 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-10 10:58:46,891 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:58:47,840 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:58:47,841 INFO  L301   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-10 10:58:47,841 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 10:58:47,859 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:58:47,860 INFO  L295   anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-10 10:58:48,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:58:48,689 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-09-10 10:58:49,868 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:58:49,869 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-09-10 10:58:50,608 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:58:50,632 INFO  L301   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-10 10:58:50,633 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 10:58:50,651 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:58:50,651 INFO  L295   anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-10 10:58:52,128 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:58:52,186 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-09-10 10:58:52,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:58:52,949 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-09-10 10:58:53,842 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-10 10:58:53,847 INFO  L313   seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-10 10:58:53,847 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 14
[2018-09-10 10:58:53,848 INFO  L258   anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-10 10:58:53,850 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-09-10 10:58:53,850 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-09-10 10:58:53,851 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182
[2018-09-10 10:58:53,851 INFO  L87              Difference]: Start difference. First operand 8938 states and 15028 transitions. Second operand 8 states.
[2018-09-10 10:58:54,575 WARN  L175               SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 11
[2018-09-10 10:59:19,776 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-10 10:59:19,777 INFO  L93              Difference]: Finished difference Result 46360 states and 88338 transitions.
[2018-09-10 10:59:19,777 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. 
[2018-09-10 10:59:19,777 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 1036
[2018-09-10 10:59:19,778 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-10 10:59:20,015 INFO  L225             Difference]: With dead ends: 46360
[2018-09-10 10:59:20,015 INFO  L226             Difference]: Without dead ends: 37428
[2018-09-10 10:59:20,078 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 4189 GetRequests, 4142 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=417, Invalid=1745, Unknown=0, NotChecked=0, Total=2162
[2018-09-10 10:59:20,115 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37428 states.
[2018-09-10 10:59:21,379 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37428 to 36541.
[2018-09-10 10:59:21,379 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 36541 states.
[2018-09-10 10:59:21,488 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36541 states to 36541 states and 60842 transitions.
[2018-09-10 10:59:21,489 INFO  L78                 Accepts]: Start accepts. Automaton has 36541 states and 60842 transitions. Word has length 1036
[2018-09-10 10:59:21,489 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-10 10:59:21,490 INFO  L480      AbstractCegarLoop]: Abstraction has 36541 states and 60842 transitions.
[2018-09-10 10:59:21,490 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-09-10 10:59:21,490 INFO  L276                IsEmpty]: Start isEmpty. Operand 36541 states and 60842 transitions.
[2018-09-10 10:59:21,668 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1168
[2018-09-10 10:59:21,668 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-10 10:59:21,670 INFO  L376         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:59:21,670 INFO  L423      AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-10 10:59:21,671 INFO  L82        PathProgramCache]: Analyzing trace with hash 2115626973, now seen corresponding path program 1 times
[2018-09-10 10:59:21,671 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-10 10:59:21,672 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:59:21,672 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:59:21,672 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 10:59:21,672 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-10 10:59:21,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:59:23,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 157 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-09-10 10:59:23,722 INFO  L301   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-10 10:59:23,723 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 10:59:23,737 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:59:23,737 INFO  L295   anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-10 10:59:24,474 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:59:24,509 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-09-10 10:59:25,717 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked.
[2018-09-10 10:59:25,718 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-09-10 10:59:26,762 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 167 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2018-09-10 10:59:26,785 INFO  L301   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-10 10:59:26,785 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 10:59:26,800 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 10:59:26,801 INFO  L295   anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-10 10:59:28,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 10:59:28,522 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-09-10 10:59:30,083 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 60 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked.
[2018-09-10 10:59:30,084 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-09-10 10:59:30,901 INFO  L134       CoverageAnalysis]: Checked inductivity of 192 backedges. 167 proven. 14 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2018-09-10 10:59:30,906 INFO  L313   seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-10 10:59:30,907 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5, 5, 5] total 20
[2018-09-10 10:59:30,907 INFO  L258   anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-10 10:59:30,909 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 13 states
[2018-09-10 10:59:30,909 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2018-09-10 10:59:30,910 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380
[2018-09-10 10:59:30,910 INFO  L87              Difference]: Start difference. First operand 36541 states and 60842 transitions. Second operand 13 states.
[2018-09-10 11:00:22,151 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-10 11:00:22,151 INFO  L93              Difference]: Finished difference Result 360209 states and 951278 transitions.
[2018-09-10 11:00:22,151 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. 
[2018-09-10 11:00:22,152 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states. Word has length 1167
[2018-09-10 11:00:22,152 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-10 11:00:27,221 INFO  L225             Difference]: With dead ends: 360209
[2018-09-10 11:00:27,221 INFO  L226             Difference]: Without dead ends: 323674
[2018-09-10 11:00:28,738 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 4781 GetRequests, 4709 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=864, Invalid=4248, Unknown=0, NotChecked=0, Total=5112
[2018-09-10 11:00:28,938 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 323674 states.
[2018-09-10 11:00:40,524 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 323674 to 321467.
[2018-09-10 11:00:40,525 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 321467 states.
[2018-09-10 11:00:42,340 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 321467 states to 321467 states and 708434 transitions.
[2018-09-10 11:00:42,340 INFO  L78                 Accepts]: Start accepts. Automaton has 321467 states and 708434 transitions. Word has length 1167
[2018-09-10 11:00:42,341 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-10 11:00:42,341 INFO  L480      AbstractCegarLoop]: Abstraction has 321467 states and 708434 transitions.
[2018-09-10 11:00:42,341 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 13 states.
[2018-09-10 11:00:42,341 INFO  L276                IsEmpty]: Start isEmpty. Operand 321467 states and 708434 transitions.
[2018-09-10 11:00:56,002 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1173
[2018-09-10 11:00:56,003 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-10 11:00:56,004 INFO  L376         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:00:56,004 INFO  L423      AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-10 11:00:56,005 INFO  L82        PathProgramCache]: Analyzing trace with hash 1519591198, now seen corresponding path program 1 times
[2018-09-10 11:00:56,005 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-10 11:00:56,006 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 11:00:56,006 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-10 11:00:56,007 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-10 11:00:56,007 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-10 11:00:56,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-10 11:00:59,219 INFO  L134       CoverageAnalysis]: Checked inductivity of 207 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked.
[2018-09-10 11:00:59,220 INFO  L313   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-10 11:00:59,220 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-09-10 11:00:59,220 INFO  L265   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-10 11:00:59,223 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-09-10 11:00:59,223 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-09-10 11:00:59,223 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-09-10 11:00:59,224 INFO  L87              Difference]: Start difference. First operand 321467 states and 708434 transitions. Second operand 4 states.
[2018-09-10 11:01:21,899 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-10 11:01:21,899 INFO  L93              Difference]: Finished difference Result 785724 states and 1879648 transitions.
[2018-09-10 11:01:21,900 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-09-10 11:01:21,900 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1172
[2018-09-10 11:01:21,901 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
Received shutdown request...