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/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label08_true-unreach-call.c


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


This is Ultimate 0.1.23-dd2f093
[2018-07-23 23:16:41,976 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-07-23 23:16:41,981 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
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[2018-07-23 23:16:41,999 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-07-23 23:16:42,000 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-07-23 23:16:42,004 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2018-07-23 23:16:42,015 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-07-23 23:16:42,019 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-07-23 23:16:42,020 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-07-23 23:16:42,023 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-07-23 23:16:42,030 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-07-23 23:16:42,034 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-07-23 23:16:42,035 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-07-23 23:16:42,038 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-07-23 23:16:42,043 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2018-07-23 23:16:42,044 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-07-23 23:16:42,045 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-07-23 23:16:42,046 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-07-23 23:16:42,047 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
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[2018-07-23 23:16:42,052 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
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[2018-07-23 23:16:42,056 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-07-23 23:16:42,056 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf
[2018-07-23 23:16:42,086 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-07-23 23:16:42,086 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-07-23 23:16:42,087 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-07-23 23:16:42,087 INFO  L133        SettingsManager]:  * User list type=DISABLED
[2018-07-23 23:16:42,088 INFO  L133        SettingsManager]:  * calls to implemented procedures=false
[2018-07-23 23:16:42,088 INFO  L131        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-07-23 23:16:42,088 INFO  L133        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2018-07-23 23:16:42,088 INFO  L133        SettingsManager]:  * Abstract domain=CompoundDomain
[2018-07-23 23:16:42,088 INFO  L133        SettingsManager]:  * Log string format=TERM
[2018-07-23 23:16:42,089 INFO  L133        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2018-07-23 23:16:42,089 INFO  L133        SettingsManager]:  * Interval Domain=false
[2018-07-23 23:16:42,090 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-07-23 23:16:42,090 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-07-23 23:16:42,090 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-07-23 23:16:42,090 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-07-23 23:16:42,091 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-07-23 23:16:42,091 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-07-23 23:16:42,091 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-07-23 23:16:42,091 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-07-23 23:16:42,091 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-07-23 23:16:42,092 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-07-23 23:16:42,092 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-07-23 23:16:42,092 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-07-23 23:16:42,092 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-07-23 23:16:42,092 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-07-23 23:16:42,093 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-07-23 23:16:42,093 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-07-23 23:16:42,093 INFO  L133        SettingsManager]:  * Trace refinement strategy=TAIPAN
[2018-07-23 23:16:42,093 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-07-23 23:16:42,093 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-07-23 23:16:42,094 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-07-23 23:16:42,094 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-07-23 23:16:42,094 INFO  L133        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2018-07-23 23:16:42,141 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-07-23 23:16:42,154 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-07-23 23:16:42,158 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-07-23 23:16:42,162 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-07-23 23:16:42,162 INFO  L276        PluginConnector]: CDTParser initialized
[2018-07-23 23:16:42,163 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label08_true-unreach-call.c
[2018-07-23 23:16:42,522 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c81cd8826/535d9b992a15418c8c975b7a0cb6d051/FLAG26fabd622
[2018-07-23 23:16:43,122 INFO  L276              CDTParser]: Found 1 translation units.
[2018-07-23 23:16:43,123 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label08_true-unreach-call.c
[2018-07-23 23:16:43,169 INFO  L324              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c81cd8826/535d9b992a15418c8c975b7a0cb6d051/FLAG26fabd622
[2018-07-23 23:16:43,187 INFO  L332              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c81cd8826/535d9b992a15418c8c975b7a0cb6d051
[2018-07-23 23:16:43,199 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-07-23 23:16:43,201 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-07-23 23:16:43,202 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-07-23 23:16:43,202 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-07-23 23:16:43,210 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-07-23 23:16:43,212 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:16:43" (1/1) ...
[2018-07-23 23:16:43,215 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8b2370 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:43, skipping insertion in model container
[2018-07-23 23:16:43,215 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 11:16:43" (1/1) ...
[2018-07-23 23:16:43,750 INFO  L179           PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode 
[2018-07-23 23:16:45,469 INFO  L175          PostProcessor]: Settings: Checked method=main
[2018-07-23 23:16:45,486 INFO  L422         MainDispatcher]: Starting main dispatcher in SV-COMP mode 
[2018-07-23 23:16:46,687 INFO  L175          PostProcessor]: Settings: Checked method=main
[2018-07-23 23:16:47,202 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:47 WrapperNode
[2018-07-23 23:16:47,202 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-07-23 23:16:47,203 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-07-23 23:16:47,203 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-07-23 23:16:47,204 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-07-23 23:16:47,214 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:47" (1/1) ...
[2018-07-23 23:16:47,384 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:47" (1/1) ...
[2018-07-23 23:16:47,568 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-07-23 23:16:47,569 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-07-23 23:16:47,569 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-07-23 23:16:47,569 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-07-23 23:16:48,619 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:47" (1/1) ...
[2018-07-23 23:16:48,619 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:47" (1/1) ...
[2018-07-23 23:16:48,753 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:47" (1/1) ...
[2018-07-23 23:16:48,753 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:47" (1/1) ...
[2018-07-23 23:16:49,004 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:47" (1/1) ...
[2018-07-23 23:16:49,057 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:47" (1/1) ...
[2018-07-23 23:16:49,204 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:47" (1/1) ...
[2018-07-23 23:16:49,325 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-07-23 23:16:49,325 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-07-23 23:16:49,326 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-07-23 23:16:49,326 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-07-23 23:16:49,327 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:47" (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
[2018-07-23 23:16:49,384 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-07-23 23:16:49,385 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-07-23 23:16:49,385 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
[2018-07-23 23:16:49,385 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
[2018-07-23 23:16:49,385 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
[2018-07-23 23:16:49,385 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
[2018-07-23 23:16:49,385 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_output6
[2018-07-23 23:16:49,385 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_output6
[2018-07-23 23:16:49,386 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
[2018-07-23 23:16:49,386 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
[2018-07-23 23:16:49,386 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-07-23 23:16:49,386 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-07-23 23:16:49,386 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
[2018-07-23 23:16:49,387 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
[2018-07-23 23:16:49,387 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-07-23 23:16:49,387 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-07-23 23:16:49,387 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
[2018-07-23 23:16:49,387 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
[2018-07-23 23:17:12,994 INFO  L261             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-07-23 23:17:12,995 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:17:12 BoogieIcfgContainer
[2018-07-23 23:17:12,995 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-07-23 23:17:12,996 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-07-23 23:17:12,996 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-07-23 23:17:13,000 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-07-23 23:17:13,000 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 11:16:43" (1/3) ...
[2018-07-23 23:17:13,001 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c7f5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:17:13, skipping insertion in model container
[2018-07-23 23:17:13,001 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 11:16:47" (2/3) ...
[2018-07-23 23:17:13,001 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c7f5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 11:17:13, skipping insertion in model container
[2018-07-23 23:17:13,001 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 11:17:12" (3/3) ...
[2018-07-23 23:17:13,003 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem19_label08_true-unreach-call.c
[2018-07-23 23:17:13,012 INFO  L132   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-07-23 23:17:13,021 INFO  L144   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-07-23 23:17:13,084 INFO  L128   ementStrategyFactory]: Using default assertion order modulation
[2018-07-23 23:17:13,085 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2018-07-23 23:17:13,086 INFO  L374      AbstractCegarLoop]: Hoare is true
[2018-07-23 23:17:13,086 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-07-23 23:17:13,086 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-07-23 23:17:13,086 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-07-23 23:17:13,086 INFO  L378      AbstractCegarLoop]: Difference is false
[2018-07-23 23:17:13,086 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-07-23 23:17:13,086 INFO  L384      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-07-23 23:17:13,133 INFO  L276                IsEmpty]: Start isEmpty. Operand 1778 states.
[2018-07-23 23:17:13,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2018-07-23 23:17:13,142 INFO  L345         BasicCegarLoop]: Found error trace
[2018-07-23 23:17:13,143 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]
[2018-07-23 23:17:13,143 INFO  L414      AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]===
[2018-07-23 23:17:13,149 INFO  L82        PathProgramCache]: Analyzing trace with hash -644879042, now seen corresponding path program 1 times
[2018-07-23 23:17:13,151 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-07-23 23:17:13,201 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-23 23:17:13,202 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-23 23:17:13,202 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-23 23:17:13,202 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-07-23 23:17:13,310 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-23 23:17:13,677 WARN  L169               SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5
[2018-07-23 23:17:13,693 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-07-23 23:17:13,695 INFO  L309   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-07-23 23:17:13,696 INFO  L324   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-07-23 23:17:13,696 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-07-23 23:17:13,702 INFO  L450      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-07-23 23:17:13,718 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-07-23 23:17:13,719 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-07-23 23:17:13,722 INFO  L87              Difference]: Start difference. First operand 1778 states. Second operand 4 states.
[2018-07-23 23:17:40,728 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-07-23 23:17:40,728 INFO  L93              Difference]: Finished difference Result 6465 states and 12332 transitions.
[2018-07-23 23:17:40,729 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-07-23 23:17:40,730 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 44
[2018-07-23 23:17:40,730 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-07-23 23:17:40,783 INFO  L225             Difference]: With dead ends: 6465
[2018-07-23 23:17:40,784 INFO  L226             Difference]: Without dead ends: 4681
[2018-07-23 23:17:40,797 INFO  L573         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-07-23 23:17:40,824 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4681 states.
[2018-07-23 23:17:41,040 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200.
[2018-07-23 23:17:41,042 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3200 states.
[2018-07-23 23:17:41,064 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions.
[2018-07-23 23:17:41,066 INFO  L78                 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 44
[2018-07-23 23:17:41,067 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-07-23 23:17:41,067 INFO  L471      AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions.
[2018-07-23 23:17:41,067 INFO  L472      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-07-23 23:17:41,068 INFO  L276                IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions.
[2018-07-23 23:17:41,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2018-07-23 23:17:41,081 INFO  L345         BasicCegarLoop]: Found error trace
[2018-07-23 23:17:41,081 INFO  L353         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-07-23 23:17:41,081 INFO  L414      AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]===
[2018-07-23 23:17:41,082 INFO  L82        PathProgramCache]: Analyzing trace with hash -2117596845, now seen corresponding path program 1 times
[2018-07-23 23:17:41,082 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-07-23 23:17:41,083 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-23 23:17:41,083 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-23 23:17:41,084 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-23 23:17:41,084 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-07-23 23:17:41,172 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-23 23:17:41,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-07-23 23:17:41,675 INFO  L309   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-07-23 23:17:41,675 INFO  L324   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-07-23 23:17:41,675 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-07-23 23:17:41,678 INFO  L450      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-07-23 23:17:41,678 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-07-23 23:17:41,678 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2018-07-23 23:17:41,679 INFO  L87              Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states.
[2018-07-23 23:18:16,790 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-07-23 23:18:16,790 INFO  L93              Difference]: Finished difference Result 9649 states and 15539 transitions.
[2018-07-23 23:18:16,792 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-07-23 23:18:16,792 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 116
[2018-07-23 23:18:16,793 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-07-23 23:18:16,833 INFO  L225             Difference]: With dead ends: 9649
[2018-07-23 23:18:16,833 INFO  L226             Difference]: Without dead ends: 6455
[2018-07-23 23:18:16,844 INFO  L573         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2018-07-23 23:18:16,851 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6455 states.
[2018-07-23 23:18:16,997 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6455 to 6345.
[2018-07-23 23:18:16,998 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6345 states.
[2018-07-23 23:18:17,018 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6345 states to 6345 states and 8983 transitions.
[2018-07-23 23:18:17,019 INFO  L78                 Accepts]: Start accepts. Automaton has 6345 states and 8983 transitions. Word has length 116
[2018-07-23 23:18:17,020 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-07-23 23:18:17,020 INFO  L471      AbstractCegarLoop]: Abstraction has 6345 states and 8983 transitions.
[2018-07-23 23:18:17,020 INFO  L472      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-07-23 23:18:17,020 INFO  L276                IsEmpty]: Start isEmpty. Operand 6345 states and 8983 transitions.
[2018-07-23 23:18:17,024 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 119
[2018-07-23 23:18:17,024 INFO  L345         BasicCegarLoop]: Found error trace
[2018-07-23 23:18:17,024 INFO  L353         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-07-23 23:18:17,025 INFO  L414      AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]===
[2018-07-23 23:18:17,025 INFO  L82        PathProgramCache]: Analyzing trace with hash -782035094, now seen corresponding path program 1 times
[2018-07-23 23:18:17,025 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-07-23 23:18:17,026 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-23 23:18:17,026 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-23 23:18:17,026 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-23 23:18:17,026 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-07-23 23:18:17,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-23 23:18:17,253 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-07-23 23:18:17,253 INFO  L309   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-07-23 23:18:17,253 INFO  L324   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-07-23 23:18:17,253 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-07-23 23:18:17,254 INFO  L450      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-07-23 23:18:17,254 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-07-23 23:18:17,255 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2018-07-23 23:18:17,255 INFO  L87              Difference]: Start difference. First operand 6345 states and 8983 transitions. Second operand 6 states.
[2018-07-23 23:18:44,463 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-07-23 23:18:44,463 INFO  L93              Difference]: Finished difference Result 24592 states and 35792 transitions.
[2018-07-23 23:18:44,465 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-07-23 23:18:44,465 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 118
[2018-07-23 23:18:44,465 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-07-23 23:18:44,545 INFO  L225             Difference]: With dead ends: 24592
[2018-07-23 23:18:44,545 INFO  L226             Difference]: Without dead ends: 18253
[2018-07-23 23:18:44,573 INFO  L573         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2018-07-23 23:18:44,589 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18253 states.
[2018-07-23 23:18:44,949 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18253 to 18015.
[2018-07-23 23:18:44,949 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18015 states.
[2018-07-23 23:18:44,989 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18015 states to 18015 states and 24361 transitions.
[2018-07-23 23:18:44,989 INFO  L78                 Accepts]: Start accepts. Automaton has 18015 states and 24361 transitions. Word has length 118
[2018-07-23 23:18:44,990 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-07-23 23:18:44,990 INFO  L471      AbstractCegarLoop]: Abstraction has 18015 states and 24361 transitions.
[2018-07-23 23:18:44,990 INFO  L472      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-07-23 23:18:44,990 INFO  L276                IsEmpty]: Start isEmpty. Operand 18015 states and 24361 transitions.
[2018-07-23 23:18:44,993 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 127
[2018-07-23 23:18:44,993 INFO  L345         BasicCegarLoop]: Found error trace
[2018-07-23 23:18:44,993 INFO  L353         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-07-23 23:18:44,993 INFO  L414      AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]===
[2018-07-23 23:18:44,994 INFO  L82        PathProgramCache]: Analyzing trace with hash -1055799919, now seen corresponding path program 1 times
[2018-07-23 23:18:44,994 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-07-23 23:18:44,995 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-23 23:18:44,995 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-23 23:18:44,995 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-23 23:18:44,995 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-07-23 23:18:45,018 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-23 23:18:45,311 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-07-23 23:18:45,312 INFO  L309   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-07-23 23:18:45,312 INFO  L324   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-07-23 23:18:45,312 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-07-23 23:18:45,313 INFO  L450      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-07-23 23:18:45,313 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-07-23 23:18:45,313 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-07-23 23:18:45,313 INFO  L87              Difference]: Start difference. First operand 18015 states and 24361 transitions. Second operand 5 states.
[2018-07-23 23:19:09,178 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-07-23 23:19:09,179 INFO  L93              Difference]: Finished difference Result 54710 states and 75514 transitions.
[2018-07-23 23:19:09,179 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-07-23 23:19:09,179 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 126
[2018-07-23 23:19:09,180 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-07-23 23:19:09,314 INFO  L225             Difference]: With dead ends: 54710
[2018-07-23 23:19:09,314 INFO  L226             Difference]: Without dead ends: 36701
[2018-07-23 23:19:09,373 INFO  L573         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2018-07-23 23:19:09,405 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36701 states.
[2018-07-23 23:19:10,106 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36701 to 36259.
[2018-07-23 23:19:10,107 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 36259 states.
[2018-07-23 23:19:10,180 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36259 states to 36259 states and 47873 transitions.
[2018-07-23 23:19:10,181 INFO  L78                 Accepts]: Start accepts. Automaton has 36259 states and 47873 transitions. Word has length 126
[2018-07-23 23:19:10,181 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-07-23 23:19:10,181 INFO  L471      AbstractCegarLoop]: Abstraction has 36259 states and 47873 transitions.
[2018-07-23 23:19:10,181 INFO  L472      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-07-23 23:19:10,182 INFO  L276                IsEmpty]: Start isEmpty. Operand 36259 states and 47873 transitions.
[2018-07-23 23:19:10,185 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 210
[2018-07-23 23:19:10,185 INFO  L345         BasicCegarLoop]: Found error trace
[2018-07-23 23:19:10,186 INFO  L353         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-07-23 23:19:10,186 INFO  L414      AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]===
[2018-07-23 23:19:10,186 INFO  L82        PathProgramCache]: Analyzing trace with hash -875080436, now seen corresponding path program 1 times
[2018-07-23 23:19:10,186 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-07-23 23:19:10,187 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-23 23:19:10,187 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-23 23:19:10,187 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-23 23:19:10,187 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-07-23 23:19:10,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-23 23:19:10,531 WARN  L169               SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-07-23 23:19:10,966 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-07-23 23:19:10,966 INFO  L309   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-07-23 23:19:10,967 INFO  L324   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-07-23 23:19:10,967 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-07-23 23:19:10,968 INFO  L450      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-07-23 23:19:10,968 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-07-23 23:19:10,968 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2018-07-23 23:19:10,969 INFO  L87              Difference]: Start difference. First operand 36259 states and 47873 transitions. Second operand 6 states.
[2018-07-23 23:19:41,087 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-07-23 23:19:41,088 INFO  L93              Difference]: Finished difference Result 100439 states and 136158 transitions.
[2018-07-23 23:19:41,088 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-07-23 23:19:41,088 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 209
[2018-07-23 23:19:41,089 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-07-23 23:19:41,292 INFO  L225             Difference]: With dead ends: 100439
[2018-07-23 23:19:41,292 INFO  L226             Difference]: Without dead ends: 64186
[2018-07-23 23:19:41,390 INFO  L573         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2018-07-23 23:19:41,437 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 64186 states.
[2018-07-23 23:19:42,825 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 64186 to 63673.
[2018-07-23 23:19:42,825 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 63673 states.
[2018-07-23 23:19:42,975 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 63673 states to 63673 states and 83176 transitions.
[2018-07-23 23:19:42,976 INFO  L78                 Accepts]: Start accepts. Automaton has 63673 states and 83176 transitions. Word has length 209
[2018-07-23 23:19:42,976 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-07-23 23:19:42,977 INFO  L471      AbstractCegarLoop]: Abstraction has 63673 states and 83176 transitions.
[2018-07-23 23:19:42,977 INFO  L472      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-07-23 23:19:42,978 INFO  L276                IsEmpty]: Start isEmpty. Operand 63673 states and 83176 transitions.
[2018-07-23 23:19:42,992 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 343
[2018-07-23 23:19:42,992 INFO  L345         BasicCegarLoop]: Found error trace
[2018-07-23 23:19:42,992 INFO  L353         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-07-23 23:19:42,993 INFO  L414      AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]===
[2018-07-23 23:19:42,993 INFO  L82        PathProgramCache]: Analyzing trace with hash 544249999, now seen corresponding path program 1 times
[2018-07-23 23:19:42,993 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-07-23 23:19:42,994 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-23 23:19:42,994 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-07-23 23:19:42,994 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-07-23 23:19:42,995 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-07-23 23:19:43,032 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-07-23 23:19:43,295 WARN  L169               SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-07-23 23:19:43,640 INFO  L134       CoverageAnalysis]: Checked inductivity of 350 backedges. 111 proven. 159 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked.
[2018-07-23 23:19:43,641 INFO  L297   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-07-23 23:19:43,641 INFO  L191   anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION
[2018-07-23 23:19:43,642 INFO  L199      CegarAbsIntRunner]: Running AI on error trace of length 343 with the following transitions: 
[2018-07-23 23:19:43,644 INFO  L201      CegarAbsIntRunner]: [0], [1], [1075], [1082], [1090], [1098], [1106], [1114], [1122], [1130], [1138], [1146], [1154], [1162], [1170], [1178], [1186], [1194], [1202], [1210], [1218], [1226], [1234], [1242], [1250], [1258], [1266], [1274], [1282], [1290], [1298], [1306], [1314], [1322], [1326], [1328], [1331], [1339], [1347], [1355], [1363], [1371], [1379], [1387], [1395], [1403], [1411], [1419], [1427], [1435], [1443], [1451], [1459], [1467], [1475], [1483], [1491], [1499], [1507], [1515], [1523], [1531], [1539], [1547], [1555], [1563], [1567], [1572], [1574], [1575], [1579], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1645], [1656], [1667], [1671], [1675], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1725], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1825], [1829], [1833], [1836], [1839], [1843], [2650], [5775], [5779], [5785], [5789], [5791], [6833], [6834], [6835], [6839], [6840]
[2018-07-23 23:19:43,715 INFO  L148    AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain]
[2018-07-23 23:19:43,715 INFO  L101         FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2)
[2018-07-23 23:19:51,515 INFO  L266    AbstractInterpreter]: Error location(s) were unreachable
[2018-07-23 23:19:51,517 INFO  L272    AbstractInterpreter]: Visited 131 different actions 131 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables.
[2018-07-23 23:19:51,529 INFO  L395   sIntCurrentIteration]: Generating AbsInt predicates
[2018-07-23 23:19:56,354 INFO  L232   lantSequenceWeakener]: Weakened 327 states. On average, predicates are now at 75.37% of their original sizes.
[2018-07-23 23:19:56,354 INFO  L408   sIntCurrentIteration]: Unifying AI predicates
[2018-07-23 23:19:56,929 INFO  L419   sIntCurrentIteration]: Finished generation of AbsInt predicates
[2018-07-23 23:19:56,930 INFO  L309   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-07-23 23:19:56,930 INFO  L324   seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11
[2018-07-23 23:19:56,930 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-07-23 23:19:56,931 INFO  L450      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-07-23 23:19:56,931 INFO  L132   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-07-23 23:19:56,932 INFO  L133   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42
[2018-07-23 23:19:56,932 INFO  L87              Difference]: Start difference. First operand 63673 states and 83176 transitions. Second operand 7 states.
Received shutdown request...