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/Problem12_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-08 16:38:29,422 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-08 16:38:29,424 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-08 16:38:29,445 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-08 16:38:29,446 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-08 16:38:29,447 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-08 16:38:29,449 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-08 16:38:29,451 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-08 16:38:29,455 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-08 16:38:29,456 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-08 16:38:29,465 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-08 16:38:29,466 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-08 16:38:29,468 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-08 16:38:29,469 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-08 16:38:29,470 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-08 16:38:29,471 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-08 16:38:29,474 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-08 16:38:29,476 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-08 16:38:29,478 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-08 16:38:29,479 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-08 16:38:29,483 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-08 16:38:29,484 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-08 16:38:29,488 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-08 16:38:29,489 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-08 16:38:29,489 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-08 16:38:29,490 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-08 16:38:29,492 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-08 16:38:29,492 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-08 16:38:29,493 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-08 16:38:29,495 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-08 16:38:29,495 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-08 16:38:29,497 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-08 16:38:29,497 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-08 16:38:29,497 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-08 16:38:29,500 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-08 16:38:29,501 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-08 16:38:29,502 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 16:38:29,533 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-08 16:38:29,534 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-08 16:38:29,535 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-08 16:38:29,535 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-08 16:38:29,535 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-08 16:38:29,535 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-08 16:38:29,535 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-08 16:38:29,536 INFO L133 SettingsManager]: * Octagon Domain=false [2018-08-08 16:38:29,536 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-08 16:38:29,536 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-08 16:38:29,536 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-08 16:38:29,540 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-08 16:38:29,541 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-08 16:38:29,541 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-08 16:38:29,541 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-08 16:38:29,541 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-08 16:38:29,542 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-08 16:38:29,542 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-08 16:38:29,542 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-08 16:38:29,542 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-08 16:38:29,543 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-08 16:38:29,543 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-08 16:38:29,543 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-08 16:38:29,543 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 16:38:29,543 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-08 16:38:29,544 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-08 16:38:29,544 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-08 16:38:29,544 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-08-08 16:38:29,544 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-08 16:38:29,544 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-08 16:38:29,544 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-08 16:38:29,545 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-08 16:38:29,545 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-08 16:38:29,596 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-08 16:38:29,611 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-08 16:38:29,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-08 16:38:29,616 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-08 16:38:29,616 INFO L276 PluginConnector]: CDTParser initialized [2018-08-08 16:38:29,617 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label59_true-unreach-call.c [2018-08-08 16:38:29,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67c62a29d/0665312de0b542b38ae3b371327ef25f/FLAGf1120b559 [2018-08-08 16:38:30,448 INFO L276 CDTParser]: Found 1 translation units. [2018-08-08 16:38:30,450 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label59_true-unreach-call.c [2018-08-08 16:38:30,484 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67c62a29d/0665312de0b542b38ae3b371327ef25f/FLAGf1120b559 [2018-08-08 16:38:30,507 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67c62a29d/0665312de0b542b38ae3b371327ef25f [2018-08-08 16:38:30,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-08 16:38:30,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-08 16:38:30,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-08 16:38:30,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-08 16:38:30,533 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-08 16:38:30,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 04:38:30" (1/1) ... [2018-08-08 16:38:30,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f591c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:30, skipping insertion in model container [2018-08-08 16:38:30,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 04:38:30" (1/1) ... [2018-08-08 16:38:30,881 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-08 16:38:31,931 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 16:38:31,948 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-08 16:38:32,606 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 16:38:32,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:32 WrapperNode [2018-08-08 16:38:32,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-08 16:38:32,863 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-08 16:38:32,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-08 16:38:32,864 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-08 16:38:32,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:32" (1/1) ... [2018-08-08 16:38:32,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:32" (1/1) ... [2018-08-08 16:38:33,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-08 16:38:33,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-08 16:38:33,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-08 16:38:33,135 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-08 16:38:33,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:32" (1/1) ... [2018-08-08 16:38:33,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:32" (1/1) ... [2018-08-08 16:38:33,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:32" (1/1) ... [2018-08-08 16:38:33,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:32" (1/1) ... [2018-08-08 16:38:33,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:32" (1/1) ... [2018-08-08 16:38:33,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:32" (1/1) ... [2018-08-08 16:38:33,924 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:32" (1/1) ... [2018-08-08 16:38:33,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-08 16:38:33,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-08 16:38:33,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-08 16:38:33,997 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-08 16:38:33,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:32" (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 16:38:34,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-08 16:38:34,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-08 16:38:34,072 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 16:38:34,072 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 16:38:34,073 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 16:38:34,073 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 16:38:34,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-08 16:38:34,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-08 16:38:34,073 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 [2018-08-08 16:38:34,074 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 [2018-08-08 16:38:34,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-08 16:38:34,074 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-08 16:38:34,074 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 16:38:34,074 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 16:38:44,611 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-08 16:38:44,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 04:38:44 BoogieIcfgContainer [2018-08-08 16:38:44,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-08 16:38:44,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-08 16:38:44,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-08 16:38:44,617 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-08 16:38:44,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.08 04:38:30" (1/3) ... [2018-08-08 16:38:44,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47162342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 04:38:44, skipping insertion in model container [2018-08-08 16:38:44,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:38:32" (2/3) ... [2018-08-08 16:38:44,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47162342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 04:38:44, skipping insertion in model container [2018-08-08 16:38:44,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 04:38:44" (3/3) ... [2018-08-08 16:38:44,621 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label59_true-unreach-call.c [2018-08-08 16:38:44,631 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-08 16:38:44,640 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-08 16:38:44,701 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-08 16:38:44,702 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-08 16:38:44,702 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-08 16:38:44,702 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-08 16:38:44,703 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-08 16:38:44,703 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-08 16:38:44,703 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-08 16:38:44,703 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-08 16:38:44,703 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-08 16:38:44,754 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-08-08 16:38:44,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-08-08 16:38:44,770 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 16:38:44,772 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] [2018-08-08 16:38:44,775 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 16:38:44,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1030733601, now seen corresponding path program 1 times [2018-08-08 16:38:44,782 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 16:38:44,783 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 52 with the following transitions: [2018-08-08 16:38:44,786 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], [309], [311], [2360], [2364], [2370], [2374], [3269], [3270], [3271], [3273] [2018-08-08 16:38:44,833 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-08-08 16:38:44,833 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 16:38:50,049 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 16:38:50,051 INFO L272 AbstractInterpreter]: Visited 50 different actions 50 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-08-08 16:38:50,062 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 16:38:51,869 INFO L232 lantSequenceWeakener]: Weakened 48 states. On average, predicates are now at 77.27% of their original sizes. [2018-08-08 16:38:51,869 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 16:38:51,991 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 16:38:51,992 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 16:38:51,992 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-08 16:38:51,993 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 16:38:51,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-08 16:38:52,006 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-08 16:38:52,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 16:38:52,009 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 6 states. [2018-08-08 16:39:03,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 16:39:03,205 INFO L93 Difference]: Finished difference Result 2448 states and 4699 transitions. [2018-08-08 16:39:03,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-08 16:39:03,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2018-08-08 16:39:03,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 16:39:03,258 INFO L225 Difference]: With dead ends: 2448 [2018-08-08 16:39:03,258 INFO L226 Difference]: Without dead ends: 1606 [2018-08-08 16:39:03,274 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 50 GetRequests, 46 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 16:39:03,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2018-08-08 16:39:03,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1604. [2018-08-08 16:39:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-08-08 16:39:03,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2357 transitions. [2018-08-08 16:39:03,472 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2357 transitions. Word has length 51 [2018-08-08 16:39:03,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 16:39:03,473 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2357 transitions. [2018-08-08 16:39:03,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-08 16:39:03,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2357 transitions. [2018-08-08 16:39:03,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-08-08 16:39:03,484 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 16:39:03,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:39:03,485 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 16:39:03,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1181018850, now seen corresponding path program 1 times [2018-08-08 16:39:03,486 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 16:39:03,486 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 128 with the following transitions: [2018-08-08 16:39:03,487 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], [309], [311], [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], [518], [1374], [2360], [2364], [2370], [2374], [2376], [3269], [3270], [3271], [3273], [3274] [2018-08-08 16:39:03,501 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-08-08 16:39:03,502 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2)