java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:24:13,392 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:24:13,394 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:24:13,405 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:24:13,406 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:24:13,407 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:24:13,408 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:24:13,410 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:24:13,411 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:24:13,412 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:24:13,413 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:24:13,413 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:24:13,414 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:24:13,415 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:24:13,416 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:24:13,417 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:24:13,418 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:24:13,420 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:24:13,422 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:24:13,424 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:24:13,425 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:24:13,426 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:24:13,428 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:24:13,429 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:24:13,429 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:24:13,430 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:24:13,431 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:24:13,432 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:24:13,432 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:24:13,434 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:24:13,434 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:24:13,434 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:24:13,435 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:24:13,435 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:24:13,436 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:24:13,437 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:24:13,437 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 14:24:13,453 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:24:13,454 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:24:13,455 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:24:13,455 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:24:13,455 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:24:13,455 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:24:13,456 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:24:13,456 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:24:13,456 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:24:13,456 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:24:13,456 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:24:13,457 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:24:13,458 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:24:13,458 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:24:13,458 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:24:13,459 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:24:13,459 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:24:13,459 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:24:13,459 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:24:13,459 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:24:13,460 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:24:13,460 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:24:13,460 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:24:13,460 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:24:13,461 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:24:13,462 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:24:13,462 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:24:13,462 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:24:13,462 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:24:13,462 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:24:13,463 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:24:13,463 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:24:13,463 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:24:13,520 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:24:13,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:24:13,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:24:13,543 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:24:13,543 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:24:13,544 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label57_true-unreach-call.c [2018-07-24 14:24:13,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4784d9f/381eb8b80d994a80854b4c226da40494/FLAG9ecb0dad6 [2018-07-24 14:24:14,448 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:24:14,449 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label57_true-unreach-call.c [2018-07-24 14:24:14,483 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4784d9f/381eb8b80d994a80854b4c226da40494/FLAG9ecb0dad6 [2018-07-24 14:24:14,505 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c4784d9f/381eb8b80d994a80854b4c226da40494 [2018-07-24 14:24:14,518 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:24:14,520 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:24:14,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:24:14,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:24:14,533 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:24:14,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:24:14" (1/1) ... [2018-07-24 14:24:14,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d65a7e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:14, skipping insertion in model container [2018-07-24 14:24:14,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:24:14" (1/1) ... [2018-07-24 14:24:14,929 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:24:16,195 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:24:16,215 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:24:17,056 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:24:17,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:17 WrapperNode [2018-07-24 14:24:17,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:24:17,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:24:17,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:24:17,429 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:24:17,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:17" (1/1) ... [2018-07-24 14:24:17,561 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:17" (1/1) ... [2018-07-24 14:24:17,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:24:17,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:24:17,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:24:17,781 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:24:18,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:17" (1/1) ... [2018-07-24 14:24:18,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:17" (1/1) ... [2018-07-24 14:24:18,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:17" (1/1) ... [2018-07-24 14:24:18,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:17" (1/1) ... [2018-07-24 14:24:18,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:17" (1/1) ... [2018-07-24 14:24:18,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:17" (1/1) ... [2018-07-24 14:24:18,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:17" (1/1) ... [2018-07-24 14:24:18,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:24:18,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:24:18,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:24:18,951 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:24:18,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:24:19,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:24:19,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:24:19,023 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 [2018-07-24 14:24:19,024 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 [2018-07-24 14:24:19,024 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 [2018-07-24 14:24:19,024 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 [2018-07-24 14:24:19,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:24:19,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:24:19,024 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 [2018-07-24 14:24:19,025 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 [2018-07-24 14:24:19,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:24:19,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:24:19,025 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 [2018-07-24 14:24:19,025 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 [2018-07-24 14:24:31,223 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:24:31,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:24:31 BoogieIcfgContainer [2018-07-24 14:24:31,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:24:31,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:24:31,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:24:31,228 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:24:31,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:24:14" (1/3) ... [2018-07-24 14:24:31,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd9731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:24:31, skipping insertion in model container [2018-07-24 14:24:31,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:24:17" (2/3) ... [2018-07-24 14:24:31,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd9731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:24:31, skipping insertion in model container [2018-07-24 14:24:31,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:24:31" (3/3) ... [2018-07-24 14:24:31,232 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label57_true-unreach-call.c [2018-07-24 14:24:31,241 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:24:31,253 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:24:31,320 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:24:31,321 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:24:31,321 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:24:31,321 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:24:31,321 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:24:31,321 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:24:31,321 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:24:31,322 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:24:31,322 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:24:31,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-07-24 14:24:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-07-24 14:24:31,386 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:31,388 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:24:31,388 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:31,393 INFO L82 PathProgramCache]: Analyzing trace with hash -100191940, now seen corresponding path program 1 times [2018-07-24 14:24:31,395 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:31,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:31,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:31,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:31,442 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:31,935 WARN L169 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:24:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:24:32,085 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:24:32,085 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 14:24:32,085 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:32,091 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 14:24:32,107 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 14:24:32,107 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:24:32,110 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-07-24 14:24:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:24:41,066 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-07-24 14:24:41,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 14:24:41,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-07-24 14:24:41,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:24:41,105 INFO L225 Difference]: With dead ends: 3097 [2018-07-24 14:24:41,106 INFO L226 Difference]: Without dead ends: 1975 [2018-07-24 14:24:41,119 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 14:24:41,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-07-24 14:24:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-07-24 14:24:41,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-07-24 14:24:41,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-07-24 14:24:41,274 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 68 [2018-07-24 14:24:41,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:24:41,275 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-07-24 14:24:41,275 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 14:24:41,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-07-24 14:24:41,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-07-24 14:24:41,284 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:24:41,284 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:24:41,285 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:24:41,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1219207020, now seen corresponding path program 1 times [2018-07-24 14:24:41,285 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:24:41,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:41,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:24:41,287 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:24:41,287 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:24:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:24:41,544 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:24:41,544 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:24:41,544 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:24:41,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:24:41,547 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:24:41,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:24:41,547 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:24:41,548 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-07-24 14:25:01,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:01,561 INFO L93 Difference]: Finished difference Result 5737 states and 9691 transitions. [2018-07-24 14:25:01,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:25:01,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-07-24 14:25:01,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:01,594 INFO L225 Difference]: With dead ends: 5737 [2018-07-24 14:25:01,595 INFO L226 Difference]: Without dead ends: 3769 [2018-07-24 14:25:01,602 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:25:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2018-07-24 14:25:01,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3685. [2018-07-24 14:25:01,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3685 states. [2018-07-24 14:25:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 5659 transitions. [2018-07-24 14:25:01,715 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 5659 transitions. Word has length 144 [2018-07-24 14:25:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:01,715 INFO L471 AbstractCegarLoop]: Abstraction has 3685 states and 5659 transitions. [2018-07-24 14:25:01,715 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:25:01,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 5659 transitions. [2018-07-24 14:25:01,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-07-24 14:25:01,721 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:01,722 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:25:01,722 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:25:01,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1740928624, now seen corresponding path program 1 times [2018-07-24 14:25:01,722 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:01,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:01,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:01,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:01,724 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:25:01,889 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:25:01,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:25:01,889 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:25:01,890 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:25:01,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:25:01,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:25:01,891 INFO L87 Difference]: Start difference. First operand 3685 states and 5659 transitions. Second operand 5 states. [2018-07-24 14:25:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:19,466 INFO L93 Difference]: Finished difference Result 12383 states and 19153 transitions. [2018-07-24 14:25:19,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:25:19,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2018-07-24 14:25:19,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:19,511 INFO L225 Difference]: With dead ends: 12383 [2018-07-24 14:25:19,511 INFO L226 Difference]: Without dead ends: 8704 [2018-07-24 14:25:19,530 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:25:19,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8704 states. [2018-07-24 14:25:19,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8704 to 8667. [2018-07-24 14:25:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8667 states. [2018-07-24 14:25:19,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8667 states to 8667 states and 12396 transitions. [2018-07-24 14:25:19,757 INFO L78 Accepts]: Start accepts. Automaton has 8667 states and 12396 transitions. Word has length 158 [2018-07-24 14:25:19,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:19,758 INFO L471 AbstractCegarLoop]: Abstraction has 8667 states and 12396 transitions. [2018-07-24 14:25:19,758 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:25:19,758 INFO L276 IsEmpty]: Start isEmpty. Operand 8667 states and 12396 transitions. [2018-07-24 14:25:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-07-24 14:25:19,765 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:19,765 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:25:19,765 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:25:19,767 INFO L82 PathProgramCache]: Analyzing trace with hash 459448176, now seen corresponding path program 1 times [2018-07-24 14:25:19,767 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:19,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:19,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:19,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:19,769 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:25:20,150 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:25:20,150 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:25:20,150 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:25:20,151 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:25:20,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:25:20,151 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:25:20,151 INFO L87 Difference]: Start difference. First operand 8667 states and 12396 transitions. Second operand 5 states. [2018-07-24 14:25:53,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:25:53,895 INFO L93 Difference]: Finished difference Result 31347 states and 47354 transitions. [2018-07-24 14:25:53,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:25:53,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2018-07-24 14:25:53,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:25:54,010 INFO L225 Difference]: With dead ends: 31347 [2018-07-24 14:25:54,011 INFO L226 Difference]: Without dead ends: 22686 [2018-07-24 14:25:54,058 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:25:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22686 states. [2018-07-24 14:25:54,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22686 to 22404. [2018-07-24 14:25:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22404 states. [2018-07-24 14:25:54,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22404 states to 22404 states and 31714 transitions. [2018-07-24 14:25:54,604 INFO L78 Accepts]: Start accepts. Automaton has 22404 states and 31714 transitions. Word has length 174 [2018-07-24 14:25:54,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:25:54,605 INFO L471 AbstractCegarLoop]: Abstraction has 22404 states and 31714 transitions. [2018-07-24 14:25:54,605 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:25:54,605 INFO L276 IsEmpty]: Start isEmpty. Operand 22404 states and 31714 transitions. [2018-07-24 14:25:54,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-07-24 14:25:54,613 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:25:54,614 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:25:54,614 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:25:54,614 INFO L82 PathProgramCache]: Analyzing trace with hash 799027756, now seen corresponding path program 1 times [2018-07-24 14:25:54,614 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:25:54,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:54,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:25:54,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:25:54,616 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:25:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:25:54,985 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:25:54,985 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:25:54,985 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:25:54,986 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:25:54,986 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:25:54,986 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:25:54,987 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:25:54,987 INFO L87 Difference]: Start difference. First operand 22404 states and 31714 transitions. Second operand 5 states. [2018-07-24 14:26:22,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:26:22,964 INFO L93 Difference]: Finished difference Result 62900 states and 92460 transitions. [2018-07-24 14:26:22,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:26:22,971 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2018-07-24 14:26:22,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:26:23,124 INFO L225 Difference]: With dead ends: 62900 [2018-07-24 14:26:23,125 INFO L226 Difference]: Without dead ends: 40502 [2018-07-24 14:26:23,212 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-07-24 14:26:23,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40502 states. [2018-07-24 14:26:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40502 to 40347. [2018-07-24 14:26:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40347 states. [2018-07-24 14:26:24,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40347 states to 40347 states and 58370 transitions. [2018-07-24 14:26:24,091 INFO L78 Accepts]: Start accepts. Automaton has 40347 states and 58370 transitions. Word has length 176 [2018-07-24 14:26:24,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:26:24,094 INFO L471 AbstractCegarLoop]: Abstraction has 40347 states and 58370 transitions. [2018-07-24 14:26:24,094 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:26:24,095 INFO L276 IsEmpty]: Start isEmpty. Operand 40347 states and 58370 transitions. [2018-07-24 14:26:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-07-24 14:26:24,103 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:26:24,104 INFO L353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:26:24,104 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:26:24,104 INFO L82 PathProgramCache]: Analyzing trace with hash 920688197, now seen corresponding path program 1 times [2018-07-24 14:26:24,104 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:26:24,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:26:24,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:26:24,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:26:24,106 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:26:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:26:24,403 WARN L169 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:26:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:26:25,115 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:26:25,115 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:26:25,116 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:26:25,117 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:26:25,117 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:26:25,117 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:26:25,118 INFO L87 Difference]: Start difference. First operand 40347 states and 58370 transitions. Second operand 6 states. [2018-07-24 14:26:37,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:26:37,179 INFO L93 Difference]: Finished difference Result 101438 states and 163838 transitions. [2018-07-24 14:26:37,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:26:37,186 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-07-24 14:26:37,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:26:37,445 INFO L225 Difference]: With dead ends: 101438 [2018-07-24 14:26:37,446 INFO L226 Difference]: Without dead ends: 61097 [2018-07-24 14:26:37,552 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:26:37,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61097 states. [2018-07-24 14:26:38,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61097 to 60901. [2018-07-24 14:26:38,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60901 states. [2018-07-24 14:26:39,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60901 states to 60901 states and 88531 transitions. [2018-07-24 14:26:39,133 INFO L78 Accepts]: Start accepts. Automaton has 60901 states and 88531 transitions. Word has length 195 [2018-07-24 14:26:39,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:26:39,134 INFO L471 AbstractCegarLoop]: Abstraction has 60901 states and 88531 transitions. [2018-07-24 14:26:39,134 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:26:39,134 INFO L276 IsEmpty]: Start isEmpty. Operand 60901 states and 88531 transitions. [2018-07-24 14:26:39,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-07-24 14:26:39,143 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:26:39,144 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:26:39,144 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:26:39,144 INFO L82 PathProgramCache]: Analyzing trace with hash -167540712, now seen corresponding path program 1 times [2018-07-24 14:26:39,144 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:26:39,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:26:39,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:26:39,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:26:39,146 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:26:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:26:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 122 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:26:39,400 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:26:39,400 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:26:39,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:26:39,415 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:26:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:26:39,534 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:26:39,997 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-07-24 14:26:39,997 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:26:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 122 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:26:40,888 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:26:40,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2018-07-24 14:26:40,889 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:26:40,890 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:26:40,890 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:26:40,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:26:40,891 INFO L87 Difference]: Start difference. First operand 60901 states and 88531 transitions. Second operand 5 states. [2018-07-24 14:26:57,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:26:57,763 INFO L93 Difference]: Finished difference Result 194400 states and 304926 transitions. [2018-07-24 14:26:57,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-24 14:26:57,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2018-07-24 14:26:57,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:26:58,553 INFO L225 Difference]: With dead ends: 194400 [2018-07-24 14:26:58,553 INFO L226 Difference]: Without dead ends: 134309 [2018-07-24 14:26:58,844 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 439 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-07-24 14:26:58,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134309 states. [2018-07-24 14:27:02,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134309 to 133665. [2018-07-24 14:27:02,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133665 states. [2018-07-24 14:27:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133665 states to 133665 states and 181001 transitions. [2018-07-24 14:27:02,849 INFO L78 Accepts]: Start accepts. Automaton has 133665 states and 181001 transitions. Word has length 222 [2018-07-24 14:27:02,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:27:02,849 INFO L471 AbstractCegarLoop]: Abstraction has 133665 states and 181001 transitions. [2018-07-24 14:27:02,850 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:27:02,850 INFO L276 IsEmpty]: Start isEmpty. Operand 133665 states and 181001 transitions. [2018-07-24 14:27:02,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-07-24 14:27:02,870 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:27:02,871 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:27:02,871 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:27:02,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1276908654, now seen corresponding path program 1 times [2018-07-24 14:27:02,871 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:27:02,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:27:02,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:27:02,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:27:02,873 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:27:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:27:03,277 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 125 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-07-24 14:27:03,277 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:27:03,278 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:27:03,278 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:27:03,278 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:27:03,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:27:03,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:27:03,279 INFO L87 Difference]: Start difference. First operand 133665 states and 181001 transitions. Second operand 4 states. [2018-07-24 14:27:20,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:27:20,156 INFO L93 Difference]: Finished difference Result 380327 states and 561135 transitions. [2018-07-24 14:27:20,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:27:20,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 279 [2018-07-24 14:27:20,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:27:21,177 INFO L225 Difference]: With dead ends: 380327 [2018-07-24 14:27:21,178 INFO L226 Difference]: Without dead ends: 247472 [2018-07-24 14:27:21,531 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:27:21,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247472 states. [2018-07-24 14:27:26,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247472 to 240776. [2018-07-24 14:27:26,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240776 states. [2018-07-24 14:27:26,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240776 states to 240776 states and 332616 transitions. [2018-07-24 14:27:26,868 INFO L78 Accepts]: Start accepts. Automaton has 240776 states and 332616 transitions. Word has length 279 [2018-07-24 14:27:26,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:27:26,868 INFO L471 AbstractCegarLoop]: Abstraction has 240776 states and 332616 transitions. [2018-07-24 14:27:26,868 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:27:26,868 INFO L276 IsEmpty]: Start isEmpty. Operand 240776 states and 332616 transitions. [2018-07-24 14:27:26,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2018-07-24 14:27:26,896 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:27:26,896 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-07-24 14:27:26,896 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:27:26,897 INFO L82 PathProgramCache]: Analyzing trace with hash -571276918, now seen corresponding path program 1 times [2018-07-24 14:27:26,897 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:27:26,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:27:26,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:27:26,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:27:26,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:27:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:27:27,527 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:27:27,527 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:27:27,528 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:27:27,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:27:27,543 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:27:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:27:27,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:27:28,193 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:27:28,193 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:27:28,444 WARN L169 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-07-24 14:27:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:27:28,676 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:27:28,676 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:27:28,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:27:28,691 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:27:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:27:28,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:27:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:27:30,875 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:27:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 228 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:27:31,482 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:27:31,483 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-07-24 14:27:31,483 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:27:31,484 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:27:31,484 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:27:31,486 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2018-07-24 14:27:31,487 INFO L87 Difference]: Start difference. First operand 240776 states and 332616 transitions. Second operand 9 states. Received shutdown request... [2018-07-24 14:28:09,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-07-24 14:28:09,662 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:28:09,668 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:28:09,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:28:09 BoogieIcfgContainer [2018-07-24 14:28:09,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:28:09,671 INFO L168 Benchmark]: Toolchain (without parser) took 235152.39 ms. Allocated memory was 1.5 GB in the beginning and 5.1 GB in the end (delta: 3.6 GB). Free memory was 1.4 GB in the beginning and 4.0 GB in the end (delta: -2.6 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-07-24 14:28:09,672 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 14:28:09,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2903.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. [2018-07-24 14:28:09,675 INFO L168 Benchmark]: Boogie Procedure Inliner took 351.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:28:09,676 INFO L168 Benchmark]: Boogie Preprocessor took 1170.15 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 997.7 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:28:09,677 INFO L168 Benchmark]: RCFGBuilder took 12273.25 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 155.2 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 90.3 MB). Peak memory consumption was 744.1 MB. Max. memory is 7.1 GB. [2018-07-24 14:28:09,678 INFO L168 Benchmark]: TraceAbstraction took 218444.20 ms. Allocated memory was 2.7 GB in the beginning and 5.1 GB in the end (delta: 2.4 GB). Free memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-07-24 14:28:09,683 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2903.89 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 338.2 MB). Peak memory consumption was 338.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 351.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 1170.15 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 997.7 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 174.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12273.25 ms. Allocated memory was 2.5 GB in the beginning and 2.7 GB in the end (delta: 155.2 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 90.3 MB). Peak memory consumption was 744.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218444.20 ms. Allocated memory was 2.7 GB in the beginning and 5.1 GB in the end (delta: 2.4 GB). Free memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 195]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 195). Cancelled while BasicCegarLoop was constructing difference of abstraction (240776states) and interpolant automaton (currently 21 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (544986 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 218.3s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 195.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4450 SDtfs, 31698 SDslu, 5278 SDs, 0 SdLazy, 68390 SolverSat, 14293 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 156.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1719 GetRequests, 1641 SyntacticMatches, 6 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=240776occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 12.8s AutomataMinimizationTime, 8 MinimizatonAttempts, 8095 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 2529 NumberOfCodeBlocks, 2529 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 3330 ConstructedInterpolants, 0 QuantifiedInterpolants, 2106964 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1471 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 2109/2261 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label57_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-28-09-701.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem13_label57_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-28-09-701.csv Completed graceful shutdown