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/Problem06_label24_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 18:47:48,880 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 18:47:48,883 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 18:47:48,900 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 18:47:48,901 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 18:47:48,902 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 18:47:48,903 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 18:47:48,905 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 18:47:48,907 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 18:47:48,908 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 18:47:48,909 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 18:47:48,918 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 18:47:48,919 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 18:47:48,923 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 18:47:48,924 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 18:47:48,925 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 18:47:48,926 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 18:47:48,930 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 18:47:48,933 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 18:47:48,935 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 18:47:48,938 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 18:47:48,942 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 18:47:48,946 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 18:47:48,947 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 18:47:48,947 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 18:47:48,949 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 18:47:48,951 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 18:47:48,952 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 18:47:48,952 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 18:47:48,956 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 18:47:48,956 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 18:47:48,957 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 18:47:48,957 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 18:47:48,957 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 18:47:48,960 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 18:47:48,963 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 18:47:48,963 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 18:47:48,998 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 18:47:48,999 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 18:47:49,000 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 18:47:49,000 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 18:47:49,001 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 18:47:49,001 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 18:47:49,001 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 18:47:49,005 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 18:47:49,005 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 18:47:49,005 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 18:47:49,005 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 18:47:49,006 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 18:47:49,006 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 18:47:49,007 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 18:47:49,007 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 18:47:49,007 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 18:47:49,007 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 18:47:49,007 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 18:47:49,008 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 18:47:49,008 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 18:47:49,008 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 18:47:49,010 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 18:47:49,010 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 18:47:49,011 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 18:47:49,011 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 18:47:49,011 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 18:47:49,011 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 18:47:49,012 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 18:47:49,012 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 18:47:49,012 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 18:47:49,012 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 18:47:49,012 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 18:47:49,013 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 18:47:49,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 18:47:49,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 18:47:49,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 18:47:49,108 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 18:47:49,109 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 18:47:49,109 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label24_false-unreach-call.c [2018-07-23 18:47:49,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5fecb6ea/baf8590c259443a8b1562cf3e4d05163/FLAGf3394a806 [2018-07-23 18:47:50,174 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 18:47:50,175 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label24_false-unreach-call.c [2018-07-23 18:47:50,239 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5fecb6ea/baf8590c259443a8b1562cf3e4d05163/FLAGf3394a806 [2018-07-23 18:47:50,267 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5fecb6ea/baf8590c259443a8b1562cf3e4d05163 [2018-07-23 18:47:50,285 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 18:47:50,288 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 18:47:50,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 18:47:50,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 18:47:50,297 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 18:47:50,298 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:47:50" (1/1) ... [2018-07-23 18:47:50,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c860fe3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:50, skipping insertion in model container [2018-07-23 18:47:50,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:47:50" (1/1) ... [2018-07-23 18:47:50,796 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 18:47:52,497 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:47:52,519 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 18:47:53,805 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:47:54,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:54 WrapperNode [2018-07-23 18:47:54,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 18:47:54,127 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 18:47:54,127 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 18:47:54,127 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 18:47:54,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:54" (1/1) ... [2018-07-23 18:47:54,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:54" (1/1) ... [2018-07-23 18:47:54,600 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 18:47:54,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 18:47:54,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 18:47:54,601 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 18:47:55,287 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:54" (1/1) ... [2018-07-23 18:47:55,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:54" (1/1) ... [2018-07-23 18:47:55,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:54" (1/1) ... [2018-07-23 18:47:55,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:54" (1/1) ... [2018-07-23 18:47:55,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:54" (1/1) ... [2018-07-23 18:47:55,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:54" (1/1) ... [2018-07-23 18:47:55,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:54" (1/1) ... [2018-07-23 18:47:55,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 18:47:55,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 18:47:55,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 18:47:55,761 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 18:47:55,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:54" (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 18:47:55,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 18:47:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 18:47:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-23 18:47:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-23 18:47:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 18:47:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 18:47:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5 [2018-07-23 18:47:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5 [2018-07-23 18:47:55,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 18:47:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 18:47:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-23 18:47:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-23 18:47:55,830 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-23 18:47:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-23 18:47:55,831 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 18:47:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 18:48:08,346 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 18:48:08,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:48:08 BoogieIcfgContainer [2018-07-23 18:48:08,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 18:48:08,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 18:48:08,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 18:48:08,352 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 18:48:08,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 06:47:50" (1/3) ... [2018-07-23 18:48:08,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eda8a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:48:08, skipping insertion in model container [2018-07-23 18:48:08,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:47:54" (2/3) ... [2018-07-23 18:48:08,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4eda8a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:48:08, skipping insertion in model container [2018-07-23 18:48:08,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:48:08" (3/3) ... [2018-07-23 18:48:08,356 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem06_label24_false-unreach-call.c [2018-07-23 18:48:08,366 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 18:48:08,376 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 18:48:08,442 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 18:48:08,443 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 18:48:08,443 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 18:48:08,444 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 18:48:08,444 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 18:48:08,444 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 18:48:08,444 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 18:48:08,444 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 18:48:08,444 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 18:48:08,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states. [2018-07-23 18:48:08,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 969 [2018-07-23 18:48:08,568 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:48:08,571 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] [2018-07-23 18:48:08,571 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:48:08,577 INFO L82 PathProgramCache]: Analyzing trace with hash 850388829, now seen corresponding path program 1 times [2018-07-23 18:48:08,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:48:08,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:48:08,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:48:08,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:48:08,639 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:48:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:48:11,125 WARN L169 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 18:48:12,824 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 18:48:12,827 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:48:12,827 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 18:48:12,827 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:48:12,835 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:48:12,851 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:48:12,851 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:48:12,854 INFO L87 Difference]: Start difference. First operand 1316 states. Second operand 3 states. [2018-07-23 18:48:22,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:48:22,921 INFO L93 Difference]: Finished difference Result 3736 states and 7002 transitions. [2018-07-23 18:48:22,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:48:22,924 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 968 [2018-07-23 18:48:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:48:22,978 INFO L225 Difference]: With dead ends: 3736 [2018-07-23 18:48:22,979 INFO L226 Difference]: Without dead ends: 2418 [2018-07-23 18:48:22,991 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:48:23,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2418 states. [2018-07-23 18:48:23,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2366. [2018-07-23 18:48:23,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2366 states. [2018-07-23 18:48:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 4373 transitions. [2018-07-23 18:48:23,172 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 4373 transitions. Word has length 968 [2018-07-23 18:48:23,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:48:23,176 INFO L471 AbstractCegarLoop]: Abstraction has 2366 states and 4373 transitions. [2018-07-23 18:48:23,176 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:48:23,176 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 4373 transitions. [2018-07-23 18:48:23,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 982 [2018-07-23 18:48:23,224 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:48:23,225 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] [2018-07-23 18:48:23,225 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:48:23,226 INFO L82 PathProgramCache]: Analyzing trace with hash -138578995, now seen corresponding path program 1 times [2018-07-23 18:48:23,227 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:48:23,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:48:23,228 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:48:23,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:48:23,229 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:48:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:48:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:48:25,696 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:48:25,696 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 18:48:25,697 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:48:25,701 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:48:25,701 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:48:25,701 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:48:25,702 INFO L87 Difference]: Start difference. First operand 2366 states and 4373 transitions. Second operand 3 states. [2018-07-23 18:48:35,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:48:35,150 INFO L93 Difference]: Finished difference Result 6831 states and 12833 transitions. [2018-07-23 18:48:35,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:48:35,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 981 [2018-07-23 18:48:35,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:48:35,187 INFO L225 Difference]: With dead ends: 6831 [2018-07-23 18:48:35,187 INFO L226 Difference]: Without dead ends: 4471 [2018-07-23 18:48:35,196 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:48:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2018-07-23 18:48:35,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4456. [2018-07-23 18:48:35,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4456 states. [2018-07-23 18:48:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 7691 transitions. [2018-07-23 18:48:35,317 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 7691 transitions. Word has length 981 [2018-07-23 18:48:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:48:35,322 INFO L471 AbstractCegarLoop]: Abstraction has 4456 states and 7691 transitions. [2018-07-23 18:48:35,322 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:48:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 7691 transitions. [2018-07-23 18:48:35,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1002 [2018-07-23 18:48:35,355 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:48:35,356 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2018-07-23 18:48:35,356 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output5Err0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:48:35,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1105909345, now seen corresponding path program 1 times [2018-07-23 18:48:35,357 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:48:35,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:48:35,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:48:35,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:48:35,360 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:48:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:48:35,862 WARN L169 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 18:48:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 18:48:36,261 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:48:36,261 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:48:36,264 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 1002 with the following transitions: [2018-07-23 18:48:36,270 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [81], [85], [89], [93], [97], [101], [105], [109], [113], [117], [121], [132], [136], [147], [151], [155], [159], [163], [174], [178], [182], [186], [190], [194], [205], [209], [213], [217], [221], [225], [229], [240], [244], [248], [252], [256], [260], [271], [282], [293], [297], [301], [312], [316], [320], [324], [328], [332], [336], [340], [344], [348], [352], [363], [367], [371], [375], [379], [390], [401], [405], [416], [420], [424], [428], [432], [436], [440], [444], [448], [452], [456], [467], [478], [489], [493], [497], [501], [505], [509], [513], [517], [521], [532], [536], [540], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [598], [609], [613], [617], [621], [625], [629], [633], [637], [648], [652], [656], [660], [664], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [766], [770], [774], [778], [782], [786], [797], [801], [805], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [927], [931], [935], [939], [943], [947], [951], [955], [959], [963], [974], [985], [989], [993], [997], [1001], [1012], [1023], [1027], [1031], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1101], [1105], [1109], [1113], [1120], [1124], [1135], [1146], [1150], [1154], [1158], [1169], [1173], [1177], [1181], [1185], [1189], [1200], [1204], [1208], [1219], [1223], [1227], [1231], [1235], [1239], [1243], [1247], [1251], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1311], [1315], [1319], [1330], [1334], [1338], [1345], [1353], [1361], [1369], [1377], [1385], [1393], [1401], [1409], [1417], [1425], [1433], [1441], [1449], [1457], [1465], [1473], [1481], [1489], [1497], [1505], [1513], [1521], [1525], [1527], [1830], [1834], [1840], [1844], [1846], [1851], [1855], [1859], [1863], [1867], [1871], [1875], [1886], [1890], [1894], [1898], [1909], [1913], [1917], [1921], [1932], [1936], [1940], [1944], [1948], [1952], [1956], [1960], [1964], [1968], [1972], [1976], [1980], [1984], [1995], [1999], [2003], [2007], [2011], [2015], [2019], [2023], [2027], [2031], [2035], [2039], [2043], [2047], [2051], [2055], [2059], [2063], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2109], [2113], [2117], [2121], [2125], [2136], [2147], [2151], [2155], [2159], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2256], [2260], [2264], [2268], [2272], [2276], [2280], [2284], [2288], [2292], [2296], [2300], [2304], [2315], [2319], [2323], [2327], [2331], [2342], [2346], [2357], [2368], [2372], [2376], [2380], [2384], [2388], [2392], [2396], [2400], [2404], [2408], [2412], [2416], [2420], [2431], [2435], [2439], [2443], [2447], [2451], [2455], [2459], [2470], [2474], [2478], [2482], [2493], [2504], [2508], [2512], [2516], [2520], [2524], [2528], [2532], [2536], [2540], [2544], [2548], [2552], [2556], [2560], [2564], [2568], [2572], [2576], [2580], [2584], [2588], [2592], [2596], [2600], [2604], [2608], [2612], [2616], [2620], [2624], [2628], [2632], [2636], [2640], [2651], [2655], [2659], [2663], [2667], [2671], [2675], [2679], [2683], [2687], [2691], [2695], [2699], [2703], [2707], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2824], [2828], [2832], [2836], [2840], [2844], [2848], [2852], [2856], [2860], [2864], [2868], [2879], [2883], [2887], [2891], [2895], [2899], [2903], [2907], [2911], [2915], [2919], [2923], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3009], [3013], [3024], [3028], [3032], [3043], [3047], [3051], [3055], [3059], [3063], [3067], [3071], [3082], [3086], [3097], [3101], [3105], [3109], [3120], [3124], [3135], [3139], [3143], [3147], [3151], [3155], [3159], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3229], [3233], [3237], [3241], [3245], [3249], [3260], [3271], [3275], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3365], [3369], [3373], [3377], [3381], [3385], [3389], [3393], [3397], [3401], [3405], [3409], [3413], [3417], [3421], [3425], [3429], [3433], [3437], [3448], [3452], [3456], [3460], [3464], [3468], [3472], [3476], [3480], [3484], [3488], [3499], [3503], [3514], [3518], [3522], [3526], [3530], [3534], [3538], [3542], [3546], [3550], [3561], [3565], [3569], [3573], [3577], [3588], [3592], [3596], [3600], [3604], [3608], [3612], [3616], [3620], [3624], [3628], [3632], [3636], [3647], [3651], [3655], [3659], [3663], [3667], [3671], [3675], [3679], [3683], [3687], [3698], [3702], [3706], [3710], [3714], [3718], [3722], [3726], [3730], [3734], [3745], [3749], [3760], [3764], [3768], [3772], [3776], [3780], [3784], [3788], [3792], [3796], [3800], [3804], [3808], [3812], [3823], [3827], [3838], [3849], [3853], [3857], [3861], [3865], [3869], [3873], [3877], [3881], [3885], [3889], [3893], [3897], [3901], [3905], [3909], [3913], [3917], [3921], [3925], [3929], [3933], [3937], [3941], [3945], [3949], [3953], [3964], [3968], [3972], [3976], [3979], [3980], [3984], [3988], [3992], [3996], [4000], [4011], [4015], [4019], [4023], [4027], [4031], [4035], [4039], [4043], [4046], [4047], [4051], [4055], [4059], [4063], [4067], [4071], [4075], [4079], [4083], [4087], [4091], [4102], [4106], [4110], [4121], [4125], [4129], [4133], [4137], [4148], [4152], [4156], [4160], [4164], [4168], [4172], [4176], [4180], [4191], [4202], [4213], [4217], [4221], [4225], [4229], [4233], [4237], [4241], [4245], [4256], [4260], [4264], [4268], [4272], [4276], [4280], [4284], [4288], [4292], [4296], [4300], [4304], [4308], [4312], [4316], [4320], [4324], [4328], [4332], [4336], [4340], [4344], [4348], [4352], [4363], [4367], [4371], [4382], [4386], [4390], [4394], [4398], [4402], [4406], [4417], [4428], [4432], [4436], [4440], [4444], [4448], [4452], [4456], [4460], [4464], [4468], [4479], [4483], [4487], [4491], [4495], [4499], [4503], [4507], [4511], [4515], [4519], [4523], [4527], [4531], [4535], [4539], [4543], [4547], [4551], [4555], [4559], [4563], [4567], [4571], [4575], [4579], [4583], [4587], [4591], [4595], [4599], [4603], [4607], [4611], [4622], [4626], [4637], [4641], [4645], [4656], [4660], [4664], [4668], [4672], [4676], [4680], [4684], [4688], [4692], [4696], [4700], [4704], [4708], [4712], [4716], [4720], [4724], [4728], [4739], [4743], [4747], [4751], [4755], [4766], [4770], [4774], [4778], [4782], [4786], [4790], [4794], [4798], [4802], [4806], [4810], [4814], [4818], [4822], [4826], [4830], [4834], [4838], [4842], [4846], [4850], [4854], [4858], [4869], [4880], [4884], [4888], [4892], [4896], [4900], [4904], [4908], [4912], [4923], [4927], [4931], [4935], [4946], [4957], [4961], [4965], [4969], [4973], [4984], [4988], [4992], [4996], [5000], [5004], [5008], [5012], [5023], [5027], [5031], [5034], [5035], [5037], [5038], [5039], [5041], [5042], [5043], [5045], [5047] [2018-07-23 18:48:36,469 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:48:36,470 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 18:52:14,208 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 18:52:14,209 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 18:52:14,210 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:52:14,210 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:52:14,211 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 [2018-07-23 18:52:14,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:52:14,232 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Cannot interrupt operation gracefully because timeout expired. Forcing shutdown