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/Problem13_label56_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-08 16:46:35,338 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-08 16:46:35,342 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-08 16:46:35,362 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-08 16:46:35,363 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-08 16:46:35,365 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-08 16:46:35,366 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-08 16:46:35,368 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-08 16:46:35,371 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-08 16:46:35,377 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-08 16:46:35,378 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-08 16:46:35,379 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-08 16:46:35,383 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-08 16:46:35,384 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-08 16:46:35,389 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-08 16:46:35,390 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-08 16:46:35,391 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-08 16:46:35,394 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-08 16:46:35,401 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-08 16:46:35,403 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-08 16:46:35,408 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-08 16:46:35,409 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-08 16:46:35,413 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-08 16:46:35,413 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-08 16:46:35,413 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-08 16:46:35,415 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-08 16:46:35,416 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-08 16:46:35,417 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-08 16:46:35,418 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-08 16:46:35,419 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-08 16:46:35,421 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-08 16:46:35,422 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-08-08 16:46:35,422 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-08-08 16:46:35,424 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-08-08 16:46:35,426 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-08-08 16:46:35,427 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-08-08 16:46:35,427 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 16:46:35,460 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-08 16:46:35,461 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-08 16:46:35,462 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-08 16:46:35,463 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-08 16:46:35,463 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-08 16:46:35,463 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-08 16:46:35,463 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-08 16:46:35,464 INFO L133 SettingsManager]: * Octagon Domain=false [2018-08-08 16:46:35,464 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-08 16:46:35,464 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-08 16:46:35,464 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-08 16:46:35,466 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-08 16:46:35,466 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-08 16:46:35,466 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-08 16:46:35,467 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-08 16:46:35,467 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-08 16:46:35,468 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-08 16:46:35,468 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-08 16:46:35,468 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-08 16:46:35,468 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-08 16:46:35,469 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-08 16:46:35,469 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-08 16:46:35,469 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-08 16:46:35,471 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 16:46:35,471 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-08 16:46:35,471 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-08 16:46:35,472 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-08 16:46:35,472 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-08-08 16:46:35,472 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-08 16:46:35,472 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-08 16:46:35,473 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-08 16:46:35,473 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-08 16:46:35,473 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-08 16:46:35,554 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-08 16:46:35,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-08 16:46:35,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-08 16:46:35,581 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-08 16:46:35,581 INFO L276 PluginConnector]: CDTParser initialized [2018-08-08 16:46:35,582 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label56_true-unreach-call.c [2018-08-08 16:46:35,991 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e13553b2/354a3c5e1b254b9697d02dea8c9e368d/FLAGc64cfb8dd [2018-08-08 16:46:36,476 INFO L276 CDTParser]: Found 1 translation units. [2018-08-08 16:46:36,477 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label56_true-unreach-call.c [2018-08-08 16:46:36,522 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e13553b2/354a3c5e1b254b9697d02dea8c9e368d/FLAGc64cfb8dd [2018-08-08 16:46:36,546 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9e13553b2/354a3c5e1b254b9697d02dea8c9e368d [2018-08-08 16:46:36,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-08 16:46:36,562 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-08 16:46:36,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-08 16:46:36,563 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-08 16:46:36,573 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-08 16:46:36,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 04:46:36" (1/1) ... [2018-08-08 16:46:36,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb0d3dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:36, skipping insertion in model container [2018-08-08 16:46:36,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 04:46:36" (1/1) ... [2018-08-08 16:46:36,935 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-08 16:46:38,118 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 16:46:38,137 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-08 16:46:38,985 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 16:46:39,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:39 WrapperNode [2018-08-08 16:46:39,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-08 16:46:39,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-08 16:46:39,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-08 16:46:39,429 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-08 16:46:39,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:39" (1/1) ... [2018-08-08 16:46:39,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:39" (1/1) ... [2018-08-08 16:46:39,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-08 16:46:39,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-08 16:46:39,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-08 16:46:39,823 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-08 16:46:40,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:39" (1/1) ... [2018-08-08 16:46:40,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:39" (1/1) ... [2018-08-08 16:46:40,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:39" (1/1) ... [2018-08-08 16:46:40,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:39" (1/1) ... [2018-08-08 16:46:41,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:39" (1/1) ... [2018-08-08 16:46:41,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:39" (1/1) ... [2018-08-08 16:46:41,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:39" (1/1) ... [2018-08-08 16:46:41,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-08 16:46:41,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-08 16:46:41,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-08 16:46:41,389 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-08 16:46:41,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:39" (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 16:46:41,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-08 16:46:41,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-08 16:46:41,461 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 16:46:41,461 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 16:46:41,461 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 16:46:41,461 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 16:46:41,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-08 16:46:41,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-08 16:46:41,462 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 16:46:41,462 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 16:46:41,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-08 16:46:41,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-08 16:46:41,462 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 16:46:41,463 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 16:46:53,815 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-08 16:46:53,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 04:46:53 BoogieIcfgContainer [2018-08-08 16:46:53,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-08 16:46:53,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-08 16:46:53,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-08 16:46:53,822 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-08 16:46:53,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.08 04:46:36" (1/3) ... [2018-08-08 16:46:53,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0e2be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 04:46:53, skipping insertion in model container [2018-08-08 16:46:53,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 04:46:39" (2/3) ... [2018-08-08 16:46:53,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c0e2be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 04:46:53, skipping insertion in model container [2018-08-08 16:46:53,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 04:46:53" (3/3) ... [2018-08-08 16:46:53,825 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label56_true-unreach-call.c [2018-08-08 16:46:53,836 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-08 16:46:53,847 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-08 16:46:53,912 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-08 16:46:53,913 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-08 16:46:53,913 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-08 16:46:53,913 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-08 16:46:53,913 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-08 16:46:53,914 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-08 16:46:53,914 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-08 16:46:53,914 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-08 16:46:53,914 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-08 16:46:53,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-08-08 16:46:53,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-08-08 16:46:53,971 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 16:46:53,972 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] [2018-08-08 16:46:53,976 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 16:46:53,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2146048668, now seen corresponding path program 1 times [2018-08-08 16:46:53,985 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 16:46:53,986 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 61 with the following transitions: [2018-08-08 16:46:53,990 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], [381], [383], [3064], [3068], [3074], [3078], [4267], [4268], [4269], [4271] [2018-08-08 16:46:54,035 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-08-08 16:46:54,035 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 16:48:02,067 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 16:48:02,069 INFO L272 AbstractInterpreter]: Visited 59 different actions 59 times. Never merged. Never widened. Never found a fixpoint. Largest state had 25 variables. [2018-08-08 16:48:02,081 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 16:48:26,867 INFO L232 lantSequenceWeakener]: Weakened 57 states. On average, predicates are now at 73.13% of their original sizes. [2018-08-08 16:48:26,872 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 16:48:27,080 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 16:48:27,082 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 16:48:27,082 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-08-08 16:48:27,082 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 16:48:27,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-08-08 16:48:27,096 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-08-08 16:48:27,097 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 16:48:27,099 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 6 states. [2018-08-08 16:48:46,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 16:48:46,056 INFO L93 Difference]: Finished difference Result 3044 states and 5648 transitions. [2018-08-08 16:48:46,057 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-08-08 16:48:46,059 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2018-08-08 16:48:46,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 16:48:46,093 INFO L225 Difference]: With dead ends: 3044 [2018-08-08 16:48:46,093 INFO L226 Difference]: Without dead ends: 1922 [2018-08-08 16:48:46,106 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-08-08 16:48:46,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2018-08-08 16:48:46,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1920. [2018-08-08 16:48:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2018-08-08 16:48:46,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2831 transitions. [2018-08-08 16:48:46,274 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2831 transitions. Word has length 60 [2018-08-08 16:48:46,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 16:48:46,275 INFO L480 AbstractCegarLoop]: Abstraction has 1920 states and 2831 transitions. [2018-08-08 16:48:46,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-08-08 16:48:46,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2831 transitions. [2018-08-08 16:48:46,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-08-08 16:48:46,285 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 16:48:46,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:48:46,286 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 16:48:46,286 INFO L82 PathProgramCache]: Analyzing trace with hash -705559378, now seen corresponding path program 1 times [2018-08-08 16:48:46,287 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 16:48:46,287 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 162 with the following transitions: [2018-08-08 16:48:46,288 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], [381], [383], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [522], [526], [530], [534], [538], [542], [553], [557], [561], [565], [569], [573], [577], [581], [592], [596], [600], [604], [608], [612], [616], [620], [624], [628], [632], [636], [639], [1612], [3064], [3068], [3074], [3078], [3080], [4267], [4268], [4269], [4271], [4272] [2018-08-08 16:48:46,299 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-08-08 16:48:46,299 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2)