java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -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-dd2f093
[2018-07-24 13:19:30,532 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-07-24 13:19:30,535 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-07-24 13:19:30,547 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-07-24 13:19:30,548 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-07-24 13:19:30,549 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-07-24 13:19:30,550 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-07-24 13:19:30,552 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-07-24 13:19:30,553 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-07-24 13:19:30,554 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-07-24 13:19:30,555 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-07-24 13:19:30,556 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-07-24 13:19:30,557 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-07-24 13:19:30,557 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-07-24 13:19:30,559 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-07-24 13:19:30,560 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-07-24 13:19:30,560 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-07-24 13:19:30,562 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-07-24 13:19:30,564 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-07-24 13:19:30,566 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-07-24 13:19:30,567 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-07-24 13:19:30,568 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-07-24 13:19:30,571 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-07-24 13:19:30,571 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-07-24 13:19:30,572 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-07-24 13:19:30,573 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-07-24 13:19:30,574 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-07-24 13:19:30,574 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
[2018-07-24 13:19:30,575 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-07-24 13:19:30,577 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-07-24 13:19:30,577 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-07-24 13:19:30,578 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-07-24 13:19:30,578 INFO  L177        SettingsManager]: ReqParser provides no preferences, ignoring...
[2018-07-24 13:19:30,578 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
[2018-07-24 13:19:30,579 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-07-24 13:19:30,580 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-07-24 13:19:30,580 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
[2018-07-24 13:19:30,595 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-07-24 13:19:30,596 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-07-24 13:19:30,596 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-07-24 13:19:30,597 INFO  L133        SettingsManager]:  * User list type=DISABLED
[2018-07-24 13:19:30,597 INFO  L133        SettingsManager]:  * calls to implemented procedures=false
[2018-07-24 13:19:30,597 INFO  L131        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-07-24 13:19:30,597 INFO  L133        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2018-07-24 13:19:30,598 INFO  L133        SettingsManager]:  * Abstract domain=CompoundDomain
[2018-07-24 13:19:30,598 INFO  L133        SettingsManager]:  * Log string format=TERM
[2018-07-24 13:19:30,598 INFO  L133        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2018-07-24 13:19:30,598 INFO  L133        SettingsManager]:  * Interval Domain=false
[2018-07-24 13:19:30,599 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-07-24 13:19:30,599 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-07-24 13:19:30,599 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-07-24 13:19:30,600 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-07-24 13:19:30,600 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-07-24 13:19:30,600 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-07-24 13:19:30,600 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-07-24 13:19:30,600 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-07-24 13:19:30,601 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-07-24 13:19:30,601 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-07-24 13:19:30,601 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-07-24 13:19:30,601 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-07-24 13:19:30,601 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-07-24 13:19:30,602 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-07-24 13:19:30,602 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-07-24 13:19:30,602 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-07-24 13:19:30,602 INFO  L133        SettingsManager]:  * Trace refinement strategy=RUBBER_TAIPAN
[2018-07-24 13:19:30,603 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-07-24 13:19:30,603 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-07-24 13:19:30,603 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-07-24 13:19:30,603 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-07-24 13:19:30,603 INFO  L133        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2018-07-24 13:19:30,649 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-07-24 13:19:30,666 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-07-24 13:19:30,671 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-07-24 13:19:30,673 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-07-24 13:19:30,673 INFO  L276        PluginConnector]: CDTParser initialized
[2018-07-24 13:19:30,674 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label34_true-unreach-call.c
[2018-07-24 13:19:31,046 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c05efb63/6c7be40b9d024492bbfda939561c11c0/FLAG5eb9cdb96
[2018-07-24 13:19:31,629 INFO  L276              CDTParser]: Found 1 translation units.
[2018-07-24 13:19:31,630 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label34_true-unreach-call.c
[2018-07-24 13:19:31,682 INFO  L324              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c05efb63/6c7be40b9d024492bbfda939561c11c0/FLAG5eb9cdb96
[2018-07-24 13:19:31,704 INFO  L332              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c05efb63/6c7be40b9d024492bbfda939561c11c0
[2018-07-24 13:19:31,715 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-07-24 13:19:31,717 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-07-24 13:19:31,718 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-07-24 13:19:31,718 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-07-24 13:19:31,725 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-07-24 13:19:31,726 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:19:31" (1/1) ...
[2018-07-24 13:19:31,729 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4360b630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:31, skipping insertion in model container
[2018-07-24 13:19:31,730 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 01:19:31" (1/1) ...
[2018-07-24 13:19:32,180 INFO  L179           PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode 
[2018-07-24 13:19:33,908 INFO  L175          PostProcessor]: Settings: Checked method=main
[2018-07-24 13:19:33,933 INFO  L422         MainDispatcher]: Starting main dispatcher in SV-COMP mode 
[2018-07-24 13:19:35,207 INFO  L175          PostProcessor]: Settings: Checked method=main
[2018-07-24 13:19:35,487 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:35 WrapperNode
[2018-07-24 13:19:35,488 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-07-24 13:19:35,489 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-07-24 13:19:35,489 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-07-24 13:19:35,490 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-07-24 13:19:35,499 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:35" (1/1) ...
[2018-07-24 13:19:35,591 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:35" (1/1) ...
[2018-07-24 13:19:35,659 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-07-24 13:19:35,659 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-07-24 13:19:35,661 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-07-24 13:19:35,661 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-07-24 13:19:36,300 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:35" (1/1) ...
[2018-07-24 13:19:36,300 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:35" (1/1) ...
[2018-07-24 13:19:36,373 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:35" (1/1) ...
[2018-07-24 13:19:36,373 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:35" (1/1) ...
[2018-07-24 13:19:36,550 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:35" (1/1) ...
[2018-07-24 13:19:36,612 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:35" (1/1) ...
[2018-07-24 13:19:36,687 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:35" (1/1) ...
[2018-07-24 13:19:36,739 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-07-24 13:19:36,740 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-07-24 13:19:36,740 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-07-24 13:19:36,740 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-07-24 13:19:36,741 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:35" (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
[2018-07-24 13:19:36,817 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-07-24 13:19:36,818 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-07-24 13:19:36,818 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
[2018-07-24 13:19:36,818 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
[2018-07-24 13:19:36,818 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
[2018-07-24 13:19:36,819 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
[2018-07-24 13:19:36,819 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
[2018-07-24 13:19:36,819 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
[2018-07-24 13:19:36,819 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-07-24 13:19:36,819 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-07-24 13:19:36,820 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
[2018-07-24 13:19:36,820 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
[2018-07-24 13:19:36,820 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-07-24 13:19:36,820 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-07-24 13:19:36,821 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
[2018-07-24 13:19:36,821 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
[2018-07-24 13:19:50,949 INFO  L261             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-07-24 13:19:50,949 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:19:50 BoogieIcfgContainer
[2018-07-24 13:19:50,950 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-07-24 13:19:50,951 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-07-24 13:19:50,951 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-07-24 13:19:50,954 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-07-24 13:19:50,954 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 01:19:31" (1/3) ...
[2018-07-24 13:19:50,955 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b43f82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:19:50, skipping insertion in model container
[2018-07-24 13:19:50,955 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 01:19:35" (2/3) ...
[2018-07-24 13:19:50,956 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b43f82c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 01:19:50, skipping insertion in model container
[2018-07-24 13:19:50,956 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 01:19:50" (3/3) ...
[2018-07-24 13:19:50,958 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem06_label34_true-unreach-call.c
[2018-07-24 13:19:50,966 INFO  L132   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-07-24 13:19:50,976 INFO  L144   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-07-24 13:19:51,041 INFO  L128   ementStrategyFactory]: Using default assertion order modulation
[2018-07-24 13:19:51,042 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2018-07-24 13:19:51,042 INFO  L374      AbstractCegarLoop]: Hoare is true
[2018-07-24 13:19:51,042 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-07-24 13:19:51,043 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-07-24 13:19:51,043 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-07-24 13:19:51,043 INFO  L378      AbstractCegarLoop]: Difference is false
[2018-07-24 13:19:51,043 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-07-24 13:19:51,043 INFO  L384      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-07-24 13:19:51,089 INFO  L276                IsEmpty]: Start isEmpty. Operand 1316 states.
[2018-07-24 13:19:51,166 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 995
[2018-07-24 13:19:51,166 INFO  L345         BasicCegarLoop]: Found error trace
[2018-07-24 13:19:51,169 INFO  L353         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]
[2018-07-24 13:19:51,170 INFO  L414      AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]===
[2018-07-24 13:19:51,177 INFO  L82        PathProgramCache]: Analyzing trace with hash 465769146, now seen corresponding path program 1 times
[2018-07-24 13:19:51,180 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-07-24 13:19:51,237 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-24 13:19:51,237 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-24 13:19:51,237 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-24 13:19:51,237 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-07-24 13:19:51,865 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-24 13:19:53,633 WARN  L169               SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-07-24 13:19:54,654 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-07-24 13:19:54,656 INFO  L309   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-07-24 13:19:54,656 INFO  L324   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-07-24 13:19:54,656 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-07-24 13:19:54,665 INFO  L450      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-07-24 13:19:54,680 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-07-24 13:19:54,681 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-07-24 13:19:54,683 INFO  L87              Difference]: Start difference. First operand 1316 states. Second operand 3 states.
[2018-07-24 13:20:04,015 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-07-24 13:20:04,015 INFO  L93              Difference]: Finished difference Result 3736 states and 7002 transitions.
[2018-07-24 13:20:04,018 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-07-24 13:20:04,020 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 994
[2018-07-24 13:20:04,030 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-07-24 13:20:04,076 INFO  L225             Difference]: With dead ends: 3736
[2018-07-24 13:20:04,076 INFO  L226             Difference]: Without dead ends: 2418
[2018-07-24 13:20:04,087 INFO  L573         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
[2018-07-24 13:20:04,112 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2418 states.
[2018-07-24 13:20:04,259 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2366.
[2018-07-24 13:20:04,261 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2366 states.
[2018-07-24 13:20:04,278 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 4373 transitions.
[2018-07-24 13:20:04,280 INFO  L78                 Accepts]: Start accepts. Automaton has 2366 states and 4373 transitions. Word has length 994
[2018-07-24 13:20:04,286 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-07-24 13:20:04,286 INFO  L471      AbstractCegarLoop]: Abstraction has 2366 states and 4373 transitions.
[2018-07-24 13:20:04,287 INFO  L472      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-07-24 13:20:04,287 INFO  L276                IsEmpty]: Start isEmpty. Operand 2366 states and 4373 transitions.
[2018-07-24 13:20:04,334 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1008
[2018-07-24 13:20:04,335 INFO  L345         BasicCegarLoop]: Found error trace
[2018-07-24 13:20:04,336 INFO  L353         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]
[2018-07-24 13:20:04,336 INFO  L414      AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]===
[2018-07-24 13:20:04,337 INFO  L82        PathProgramCache]: Analyzing trace with hash 614449446, now seen corresponding path program 1 times
[2018-07-24 13:20:04,338 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-07-24 13:20:04,340 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-24 13:20:04,340 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-24 13:20:04,340 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-24 13:20:04,340 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-07-24 13:20:04,634 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-24 13:20:06,953 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-07-24 13:20:06,954 INFO  L309   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-07-24 13:20:06,954 INFO  L324   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-07-24 13:20:06,954 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-07-24 13:20:06,958 INFO  L450      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-07-24 13:20:06,958 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-07-24 13:20:06,958 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-07-24 13:20:06,958 INFO  L87              Difference]: Start difference. First operand 2366 states and 4373 transitions. Second operand 4 states.
[2018-07-24 13:20:21,074 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-07-24 13:20:21,075 INFO  L93              Difference]: Finished difference Result 8929 states and 16963 transitions.
[2018-07-24 13:20:21,081 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-07-24 13:20:21,082 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1007
[2018-07-24 13:20:21,084 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-07-24 13:20:21,129 INFO  L225             Difference]: With dead ends: 8929
[2018-07-24 13:20:21,130 INFO  L226             Difference]: Without dead ends: 6569
[2018-07-24 13:20:21,140 INFO  L573         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
[2018-07-24 13:20:21,147 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6569 states.
[2018-07-24 13:20:21,295 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6569 to 6535.
[2018-07-24 13:20:21,295 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6535 states.
[2018-07-24 13:20:21,320 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6535 states to 6535 states and 11102 transitions.
[2018-07-24 13:20:21,320 INFO  L78                 Accepts]: Start accepts. Automaton has 6535 states and 11102 transitions. Word has length 1007
[2018-07-24 13:20:21,322 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-07-24 13:20:21,322 INFO  L471      AbstractCegarLoop]: Abstraction has 6535 states and 11102 transitions.
[2018-07-24 13:20:21,323 INFO  L472      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-07-24 13:20:21,323 INFO  L276                IsEmpty]: Start isEmpty. Operand 6535 states and 11102 transitions.
[2018-07-24 13:20:21,357 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1042
[2018-07-24 13:20:21,357 INFO  L345         BasicCegarLoop]: Found error trace
[2018-07-24 13:20:21,358 INFO  L353         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]
[2018-07-24 13:20:21,358 INFO  L414      AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]===
[2018-07-24 13:20:21,359 INFO  L82        PathProgramCache]: Analyzing trace with hash 1542767417, now seen corresponding path program 1 times
[2018-07-24 13:20:21,359 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-07-24 13:20:21,360 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-24 13:20:21,360 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-24 13:20:21,360 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-24 13:20:21,361 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-07-24 13:20:21,467 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-24 13:20:22,675 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-07-24 13:20:22,676 INFO  L297   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-07-24 13:20:22,676 INFO  L191   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
[2018-07-24 13:20:22,693 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-24 13:20:22,693 INFO  L288   anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-07-24 13:20:23,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-24 13:20:23,450 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-07-24 13:20:24,586 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-07-24 13:20:24,586 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-07-24 13:20:25,494 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-07-24 13:20:25,519 INFO  L297   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-07-24 13:20:25,519 INFO  L191   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
[2018-07-24 13:20:25,535 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-24 13:20:25,535 INFO  L288   anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-07-24 13:20:27,055 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-24 13:20:27,120 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-07-24 13:20:27,979 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-07-24 13:20:27,980 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-07-24 13:20:28,580 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-07-24 13:20:28,584 INFO  L309   seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-07-24 13:20:28,586 INFO  L324   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12
[2018-07-24 13:20:28,586 INFO  L251   anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-07-24 13:20:28,588 INFO  L450      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-07-24 13:20:28,589 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-07-24 13:20:28,589 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132
[2018-07-24 13:20:28,589 INFO  L87              Difference]: Start difference. First operand 6535 states and 11102 transitions. Second operand 9 states.
[2018-07-24 13:20:53,997 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-07-24 13:20:53,998 INFO  L93              Difference]: Finished difference Result 20390 states and 35979 transitions.
[2018-07-24 13:20:53,999 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2018-07-24 13:20:53,999 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 1041
[2018-07-24 13:20:54,000 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-07-24 13:20:54,071 INFO  L225             Difference]: With dead ends: 20390
[2018-07-24 13:20:54,071 INFO  L226             Difference]: Without dead ends: 13861
[2018-07-24 13:20:54,096 INFO  L573         BasicCegarLoop]: 0 DeclaredPredicates, 4191 GetRequests, 4161 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=218, Invalid=484, Unknown=0, NotChecked=0, Total=702
[2018-07-24 13:20:54,108 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13861 states.
[2018-07-24 13:20:54,430 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13861 to 13662.
[2018-07-24 13:20:54,430 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 13662 states.
[2018-07-24 13:20:54,478 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13662 states to 13662 states and 20996 transitions.
[2018-07-24 13:20:54,479 INFO  L78                 Accepts]: Start accepts. Automaton has 13662 states and 20996 transitions. Word has length 1041
[2018-07-24 13:20:54,479 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-07-24 13:20:54,479 INFO  L471      AbstractCegarLoop]: Abstraction has 13662 states and 20996 transitions.
[2018-07-24 13:20:54,479 INFO  L472      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-07-24 13:20:54,479 INFO  L276                IsEmpty]: Start isEmpty. Operand 13662 states and 20996 transitions.
[2018-07-24 13:20:54,548 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1051
[2018-07-24 13:20:54,548 INFO  L345         BasicCegarLoop]: Found error trace
[2018-07-24 13:20:54,549 INFO  L353         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]
[2018-07-24 13:20:54,550 INFO  L414      AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]===
[2018-07-24 13:20:54,550 INFO  L82        PathProgramCache]: Analyzing trace with hash -1184227967, now seen corresponding path program 1 times
[2018-07-24 13:20:54,550 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-07-24 13:20:54,552 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-24 13:20:54,552 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-24 13:20:54,552 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-24 13:20:54,552 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-07-24 13:20:54,669 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-24 13:20:55,062 WARN  L169               SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4
[2018-07-24 13:20:55,421 WARN  L169               SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 11
[2018-07-24 13:20:55,945 INFO  L134       CoverageAnalysis]: Checked inductivity of 79 backedges. 53 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-07-24 13:20:55,945 INFO  L297   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-07-24 13:20:55,945 INFO  L191   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
[2018-07-24 13:20:55,953 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-24 13:20:55,953 INFO  L288   anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-07-24 13:20:56,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-24 13:20:56,674 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-07-24 13:20:58,243 INFO  L134       CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2018-07-24 13:20:58,243 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-07-24 13:20:58,467 WARN  L169               SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8
[2018-07-24 13:20:58,574 WARN  L169               SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 8
[2018-07-24 13:20:59,191 INFO  L134       CoverageAnalysis]: Checked inductivity of 79 backedges. 59 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2018-07-24 13:20:59,213 INFO  L297   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-07-24 13:20:59,213 INFO  L191   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
[2018-07-24 13:20:59,229 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-24 13:20:59,229 INFO  L288   anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-07-24 13:21:00,741 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-24 13:21:00,821 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-07-24 13:21:02,181 INFO  L134       CoverageAnalysis]: Checked inductivity of 79 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2018-07-24 13:21:02,181 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-07-24 13:21:02,805 INFO  L134       CoverageAnalysis]: Checked inductivity of 79 backedges. 59 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2018-07-24 13:21:02,809 INFO  L309   seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-07-24 13:21:02,810 INFO  L324   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 19
[2018-07-24 13:21:02,810 INFO  L251   anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-07-24 13:21:02,812 INFO  L450      AbstractCegarLoop]: Interpolant automaton has 12 states
[2018-07-24 13:21:02,814 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2018-07-24 13:21:02,814 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342
[2018-07-24 13:21:02,814 INFO  L87              Difference]: Start difference. First operand 13662 states and 20996 transitions. Second operand 12 states.
[2018-07-24 13:21:03,131 WARN  L169               SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 14
[2018-07-24 13:22:50,700 WARN  L169               SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 18
[2018-07-24 13:22:52,506 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-07-24 13:22:52,507 INFO  L93              Difference]: Finished difference Result 275616 states and 968452 transitions.
[2018-07-24 13:22:52,507 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. 
[2018-07-24 13:22:52,507 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 1050
[2018-07-24 13:22:52,507 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-07-24 13:22:56,417 INFO  L225             Difference]: With dead ends: 275616
[2018-07-24 13:22:56,417 INFO  L226             Difference]: Without dead ends: 261960
[2018-07-24 13:22:56,825 INFO  L573         BasicCegarLoop]: 0 DeclaredPredicates, 4490 GetRequests, 4330 SyntacticMatches, 2 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9952 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=2712, Invalid=22728, Unknown=0, NotChecked=0, Total=25440
[2018-07-24 13:22:57,000 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 261960 states.
[2018-07-24 13:23:11,993 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 261960 to 256291.
[2018-07-24 13:23:11,994 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 256291 states.