java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label02_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 11:32:38,815 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 11:32:38,817 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 11:32:38,829 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 11:32:38,830 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 11:32:38,831 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 11:32:38,835 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 11:32:38,837 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 11:32:38,841 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 11:32:38,842 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 11:32:38,843 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 11:32:38,843 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 11:32:38,844 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 11:32:38,845 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 11:32:38,847 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 11:32:38,847 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 11:32:38,848 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 11:32:38,850 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 11:32:38,852 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 11:32:38,854 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 11:32:38,855 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 11:32:38,857 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 11:32:38,859 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 11:32:38,860 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 11:32:38,860 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 11:32:38,861 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 11:32:38,862 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 11:32:38,863 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 11:32:38,864 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 11:32:38,865 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 11:32:38,866 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 11:32:38,866 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 11:32:38,867 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 11:32:38,867 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 11:32:38,868 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 11:32:38,869 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 11:32:38,869 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_Default-OldIcfg.epf [2018-09-11 11:32:38,886 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 11:32:38,886 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 11:32:38,887 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 11:32:38,887 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 11:32:38,888 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 11:32:38,888 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 11:32:38,888 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 11:32:38,888 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-11 11:32:38,889 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 11:32:38,889 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 11:32:38,889 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 11:32:38,890 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 11:32:38,890 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 11:32:38,891 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 11:32:38,891 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 11:32:38,891 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 11:32:38,891 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 11:32:38,891 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 11:32:38,892 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 11:32:38,892 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 11:32:38,892 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 11:32:38,892 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 11:32:38,894 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 11:32:38,894 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 11:32:38,894 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 11:32:38,895 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 11:32:38,895 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 11:32:38,895 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 11:32:38,895 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 11:32:38,896 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 11:32:38,896 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 11:32:38,897 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 11:32:38,897 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 11:32:38,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 11:32:38,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 11:32:38,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 11:32:38,970 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 11:32:38,971 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 11:32:38,971 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label02_true-unreach-call.c [2018-09-11 11:32:39,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9703dd45c/b0039146d23d4d358b93b689b1eb274a/FLAG02cf86866 [2018-09-11 11:32:39,910 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 11:32:39,911 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label02_true-unreach-call.c [2018-09-11 11:32:39,952 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9703dd45c/b0039146d23d4d358b93b689b1eb274a/FLAG02cf86866 [2018-09-11 11:32:39,977 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9703dd45c/b0039146d23d4d358b93b689b1eb274a [2018-09-11 11:32:39,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 11:32:39,996 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 11:32:39,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 11:32:39,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 11:32:40,008 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 11:32:40,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:32:39" (1/1) ... [2018-09-11 11:32:40,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3231cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:40, skipping insertion in model container [2018-09-11 11:32:40,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:32:39" (1/1) ... [2018-09-11 11:32:40,357 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 11:32:41,390 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:32:41,412 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 11:32:42,112 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 11:32:42,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:42 WrapperNode [2018-09-11 11:32:42,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 11:32:42,400 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 11:32:42,400 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 11:32:42,400 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 11:32:42,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:42" (1/1) ... [2018-09-11 11:32:42,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:42" (1/1) ... [2018-09-11 11:32:42,606 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 11:32:42,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 11:32:42,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 11:32:42,607 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 11:32:43,222 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:42" (1/1) ... [2018-09-11 11:32:43,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:42" (1/1) ... [2018-09-11 11:32:43,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:42" (1/1) ... [2018-09-11 11:32:43,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:42" (1/1) ... [2018-09-11 11:32:43,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:42" (1/1) ... [2018-09-11 11:32:43,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:42" (1/1) ... [2018-09-11 11:32:43,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:42" (1/1) ... [2018-09-11 11:32:43,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 11:32:43,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 11:32:43,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 11:32:43,540 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 11:32:43,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 11:32:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 11:32:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 11:32:43,617 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-11 11:32:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output [2018-09-11 11:32:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-11 11:32:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output3 [2018-09-11 11:32:43,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 11:32:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 11:32:43,619 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-11 11:32:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output4 [2018-09-11 11:32:43,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 11:32:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 11:32:43,620 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-11 11:32:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_output2 [2018-09-11 11:32:56,434 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 11:32:56,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:32:56 BoogieIcfgContainer [2018-09-11 11:32:56,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 11:32:56,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 11:32:56,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 11:32:56,440 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 11:32:56,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:32:39" (1/3) ... [2018-09-11 11:32:56,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b59ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:32:56, skipping insertion in model container [2018-09-11 11:32:56,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:32:42" (2/3) ... [2018-09-11 11:32:56,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11b59ec5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:32:56, skipping insertion in model container [2018-09-11 11:32:56,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:32:56" (3/3) ... [2018-09-11 11:32:56,443 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label02_true-unreach-call.c [2018-09-11 11:32:56,453 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 11:32:56,463 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 11:32:56,526 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 11:32:56,527 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 11:32:56,527 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 11:32:56,527 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 11:32:56,528 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 11:32:56,528 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 11:32:56,528 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 11:32:56,528 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 11:32:56,528 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 11:32:56,570 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-11 11:32:56,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-09-11 11:32:56,581 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:32:56,582 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 11:32:56,583 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 11:32:56,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1036096969, now seen corresponding path program 1 times [2018-09-11 11:32:56,592 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:32:56,594 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 70 with the following transitions: [2018-09-11 11:32:56,597 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [2360], [2364], [2370], [2374], [3269], [3270], [3271], [3273] [2018-09-11 11:32:56,662 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:32:56,662 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:32:59,504 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:32:59,506 INFO L272 AbstractInterpreter]: Visited 68 different actions 68 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-09-11 11:32:59,521 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:33:00,616 INFO L232 lantSequenceWeakener]: Weakened 67 states. On average, predicates are now at 78.12% of their original sizes. [2018-09-11 11:33:00,617 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:33:00,976 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:33:00,978 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:33:00,978 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 11:33:00,978 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:33:00,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 11:33:00,992 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 11:33:00,993 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 11:33:00,995 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 6 states. [2018-09-11 11:33:23,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:33:23,719 INFO L93 Difference]: Finished difference Result 2448 states and 4699 transitions. [2018-09-11 11:33:23,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 11:33:23,723 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2018-09-11 11:33:23,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:33:23,768 INFO L225 Difference]: With dead ends: 2448 [2018-09-11 11:33:23,769 INFO L226 Difference]: Without dead ends: 1606 [2018-09-11 11:33:23,783 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 11:33:23,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2018-09-11 11:33:23,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1604. [2018-09-11 11:33:23,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-11 11:33:23,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2357 transitions. [2018-09-11 11:33:23,972 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2357 transitions. Word has length 69 [2018-09-11 11:33:23,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:33:23,974 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2357 transitions. [2018-09-11 11:33:23,974 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 11:33:23,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2357 transitions. [2018-09-11 11:33:23,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-09-11 11:33:23,986 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:33:23,987 INFO L376 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, 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] [2018-09-11 11:33:23,987 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 11:33:23,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1571496602, now seen corresponding path program 1 times [2018-09-11 11:33:23,988 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:33:23,988 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 146 with the following transitions: [2018-09-11 11:33:23,989 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [518], [1374], [2360], [2364], [2370], [2374], [2376], [3269], [3270], [3271], [3273], [3274] [2018-09-11 11:33:23,997 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:33:23,997 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 11:33:32,526 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 11:33:32,527 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-09-11 11:33:32,571 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 11:33:36,513 INFO L232 lantSequenceWeakener]: Weakened 143 states. On average, predicates are now at 76.54% of their original sizes. [2018-09-11 11:33:36,514 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 11:33:39,138 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 11:33:39,139 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 11:33:39,139 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-09-11 11:33:39,139 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 11:33:39,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-09-11 11:33:39,141 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-09-11 11:33:39,142 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-09-11 11:33:39,142 INFO L87 Difference]: Start difference. First operand 1604 states and 2357 transitions. Second operand 11 states. [2018-09-11 11:34:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 11:34:41,554 INFO L93 Difference]: Finished difference Result 3976 states and 6980 transitions. [2018-09-11 11:34:41,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-09-11 11:34:41,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 145 [2018-09-11 11:34:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 11:34:41,570 INFO L225 Difference]: With dead ends: 3976 [2018-09-11 11:34:41,570 INFO L226 Difference]: Without dead ends: 3146 [2018-09-11 11:34:41,574 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 151 GetRequests, 78 SyntacticMatches, 57 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-09-11 11:34:41,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3146 states. [2018-09-11 11:34:41,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3146 to 3143. [2018-09-11 11:34:41,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3143 states. [2018-09-11 11:34:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 3918 transitions. [2018-09-11 11:34:41,672 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 3918 transitions. Word has length 145 [2018-09-11 11:34:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 11:34:41,673 INFO L480 AbstractCegarLoop]: Abstraction has 3143 states and 3918 transitions. [2018-09-11 11:34:41,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-09-11 11:34:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 3918 transitions. [2018-09-11 11:34:41,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-09-11 11:34:41,685 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 11:34:41,685 INFO L376 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, 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] [2018-09-11 11:34:41,686 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 11:34:41,686 INFO L82 PathProgramCache]: Analyzing trace with hash 933821714, now seen corresponding path program 1 times [2018-09-11 11:34:41,686 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 11:34:41,692 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 216 with the following transitions: [2018-09-11 11:34:41,692 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [453], [455], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [798], [1374], [2360], [2364], [2370], [2374], [2376], [3269], [3270], [3271], [3273], [3274] [2018-09-11 11:34:41,710 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-09-11 11:34:41,710 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown