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_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-08 17:17:44,620 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-08 17:17:44,622 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-08 17:17:44,637 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-08 17:17:44,638 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-08 17:17:44,639 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-08 17:17:44,640 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-08 17:17:44,642 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-08 17:17:44,644 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-08 17:17:44,644 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-08 17:17:44,645 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-08 17:17:44,646 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-08 17:17:44,647 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-08 17:17:44,648 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-08 17:17:44,649 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-08 17:17:44,650 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-08 17:17:44,651 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-08 17:17:44,653 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-08 17:17:44,655 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-08 17:17:44,656 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-08 17:17:44,657 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-08 17:17:44,659 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-08 17:17:44,664 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-08 17:17:44,665 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-08 17:17:44,665 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-08 17:17:44,670 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-08 17:17:44,671 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-08 17:17:44,671 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-08 17:17:44,672 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-08 17:17:44,677 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-08 17:17:44,677 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-08 17:17:44,678 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-08 17:17:44,678 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-08 17:17:44,678 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-08 17:17:44,681 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-08 17:17:44,683 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-08 17:17:44,683 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-08-08 17:17:44,715 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-08 17:17:44,716 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-08 17:17:44,717 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-08 17:17:44,717 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-08 17:17:44,717 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-08 17:17:44,718 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-08 17:17:44,718 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-08 17:17:44,718 INFO L133 SettingsManager]: * Octagon Domain=false [2018-08-08 17:17:44,719 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-08 17:17:44,719 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-08 17:17:44,719 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-08 17:17:44,720 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-08 17:17:44,721 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-08 17:17:44,722 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-08 17:17:44,722 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-08 17:17:44,722 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-08 17:17:44,722 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-08 17:17:44,722 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-08 17:17:44,723 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-08 17:17:44,723 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-08 17:17:44,723 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-08 17:17:44,723 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-08 17:17:44,723 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-08 17:17:44,724 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 17:17:44,724 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-08 17:17:44,724 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-08 17:17:44,724 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-08 17:17:44,724 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-08-08 17:17:44,725 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-08 17:17:44,725 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-08 17:17:44,725 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-08 17:17:44,725 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-08 17:17:44,725 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-08 17:17:44,789 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-08 17:17:44,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-08 17:17:44,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-08 17:17:44,813 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-08 17:17:44,813 INFO L276 PluginConnector]: CDTParser initialized [2018-08-08 17:17:44,814 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label58_true-unreach-call.c [2018-08-08 17:17:45,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f2d96f2a/6db0c1332cdf4a41b98e68e948353d97/FLAG8b45475fa [2018-08-08 17:17:45,575 INFO L276 CDTParser]: Found 1 translation units. [2018-08-08 17:17:45,575 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label58_true-unreach-call.c [2018-08-08 17:17:45,607 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f2d96f2a/6db0c1332cdf4a41b98e68e948353d97/FLAG8b45475fa [2018-08-08 17:17:45,628 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f2d96f2a/6db0c1332cdf4a41b98e68e948353d97 [2018-08-08 17:17:45,642 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-08 17:17:45,645 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-08 17:17:45,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-08 17:17:45,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-08 17:17:45,655 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-08 17:17:45,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 05:17:45" (1/1) ... [2018-08-08 17:17:45,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd82d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:45, skipping insertion in model container [2018-08-08 17:17:45,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 05:17:45" (1/1) ... [2018-08-08 17:17:46,020 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-08 17:17:46,793 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 17:17:46,810 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-08 17:17:47,277 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 17:17:47,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:47 WrapperNode [2018-08-08 17:17:47,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-08 17:17:47,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-08 17:17:47,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-08 17:17:47,439 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-08 17:17:47,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:47" (1/1) ... [2018-08-08 17:17:47,521 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:47" (1/1) ... [2018-08-08 17:17:47,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-08 17:17:47,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-08 17:17:47,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-08 17:17:47,645 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-08 17:17:48,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:47" (1/1) ... [2018-08-08 17:17:48,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:47" (1/1) ... [2018-08-08 17:17:48,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:47" (1/1) ... [2018-08-08 17:17:48,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:47" (1/1) ... [2018-08-08 17:17:48,190 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:47" (1/1) ... [2018-08-08 17:17:48,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:47" (1/1) ... [2018-08-08 17:17:48,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:47" (1/1) ... [2018-08-08 17:17:48,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-08 17:17:48,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-08 17:17:48,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-08 17:17:48,330 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-08 17:17:48,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:47" (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 [2018-08-08 17:17:48,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-08 17:17:48,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-08 17:17:48,404 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 [2018-08-08 17:17:48,404 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 [2018-08-08 17:17:48,404 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 [2018-08-08 17:17:48,404 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 [2018-08-08 17:17:48,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-08 17:17:48,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-08 17:17:48,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-08 17:17:48,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-08 17:17:48,405 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 [2018-08-08 17:17:48,405 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 [2018-08-08 17:17:56,901 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-08 17:17:56,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 05:17:56 BoogieIcfgContainer [2018-08-08 17:17:56,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-08 17:17:56,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-08 17:17:56,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-08 17:17:56,907 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-08 17:17:56,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.08 05:17:45" (1/3) ... [2018-08-08 17:17:56,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f92257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 05:17:56, skipping insertion in model container [2018-08-08 17:17:56,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 05:17:47" (2/3) ... [2018-08-08 17:17:56,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f92257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 05:17:56, skipping insertion in model container [2018-08-08 17:17:56,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 05:17:56" (3/3) ... [2018-08-08 17:17:56,910 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label58_true-unreach-call.c [2018-08-08 17:17:56,920 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-08 17:17:56,929 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-08 17:17:56,989 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-08 17:17:56,989 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-08 17:17:56,990 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-08 17:17:56,990 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-08 17:17:56,990 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-08 17:17:56,990 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-08 17:17:56,990 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-08 17:17:56,990 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-08 17:17:56,991 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-08 17:17:57,028 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-08-08 17:17:57,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-08-08 17:17:57,037 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 17:17:57,038 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] [2018-08-08 17:17:57,039 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]=== [2018-08-08 17:17:57,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2584239, now seen corresponding path program 1 times [2018-08-08 17:17:57,047 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 17:17:57,048 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 48 with the following transitions: [2018-08-08 17:17:57,050 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], [277], [279], [2116], [2120], [2126], [2130], [3023], [3024], [3025], [3027] [2018-08-08 17:17:57,090 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-08-08 17:17:57,090 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 17:17:59,567 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 17:17:59,569 INFO L272 AbstractInterpreter]: Visited 46 different actions 46 times. Never merged. Never widened. Never found a fixpoint. Largest state had 23 variables. [2018-08-08 17:17:59,611 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 17:18:00,516 INFO L232 lantSequenceWeakener]: Weakened 44 states. On average, predicates are now at 79.92% of their original sizes. [2018-08-08 17:18:00,516 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 17:18:00,710 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 17:18:00,712 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 17:18:00,712 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-08 17:18:00,712 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 17:18:00,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-08 17:18:00,726 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-08 17:18:00,727 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 17:18:00,729 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 6 states. [2018-08-08 17:18:11,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 17:18:11,897 INFO L93 Difference]: Finished difference Result 2253 states and 4323 transitions. [2018-08-08 17:18:11,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-08 17:18:11,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2018-08-08 17:18:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 17:18:11,928 INFO L225 Difference]: With dead ends: 2253 [2018-08-08 17:18:11,928 INFO L226 Difference]: Without dead ends: 1476 [2018-08-08 17:18:11,937 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 46 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 17:18:11,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2018-08-08 17:18:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1474. [2018-08-08 17:18:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-08-08 17:18:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2167 transitions. [2018-08-08 17:18:12,084 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2167 transitions. Word has length 47 [2018-08-08 17:18:12,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 17:18:12,085 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2167 transitions. [2018-08-08 17:18:12,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-08 17:18:12,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2167 transitions. [2018-08-08 17:18:12,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-08-08 17:18:12,098 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 17:18:12,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 17:18:12,099 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]=== [2018-08-08 17:18:12,099 INFO L82 PathProgramCache]: Analyzing trace with hash 253752837, now seen corresponding path program 1 times [2018-08-08 17:18:12,099 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 17:18:12,100 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-08-08 17:18:12,100 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], [277], [279], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [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], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [935], [939], [943], [947], [951], [955], [959], [962], [1374], [2116], [2120], [2126], [2130], [2132], [3023], [3024], [3025], [3027], [3028] [2018-08-08 17:18:12,115 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-08-08 17:18:12,115 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2)