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/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label06_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 18:30:14,339 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 18:30:14,341 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 18:30:14,355 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 18:30:14,355 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 18:30:14,356 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 18:30:14,359 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 18:30:14,361 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 18:30:14,363 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 18:30:14,363 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 18:30:14,364 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 18:30:14,365 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 18:30:14,366 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 18:30:14,366 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 18:30:14,368 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 18:30:14,369 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 18:30:14,369 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 18:30:14,371 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 18:30:14,373 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 18:30:14,375 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 18:30:14,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 18:30:14,377 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 18:30:14,380 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 18:30:14,380 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 18:30:14,380 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 18:30:14,381 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 18:30:14,382 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 18:30:14,383 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 18:30:14,384 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 18:30:14,385 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 18:30:14,385 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 18:30:14,386 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 18:30:14,386 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 18:30:14,386 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 18:30:14,387 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 18:30:14,388 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 18:30:14,388 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 18:30:14,417 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 18:30:14,418 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 18:30:14,420 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 18:30:14,420 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 18:30:14,420 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 18:30:14,421 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 18:30:14,421 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 18:30:14,421 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 18:30:14,421 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 18:30:14,422 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 18:30:14,422 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 18:30:14,423 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 18:30:14,423 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 18:30:14,424 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 18:30:14,424 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 18:30:14,425 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 18:30:14,425 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 18:30:14,425 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 18:30:14,425 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 18:30:14,425 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 18:30:14,426 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 18:30:14,426 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 18:30:14,426 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 18:30:14,426 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 18:30:14,428 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 18:30:14,428 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 18:30:14,428 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 18:30:14,428 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 18:30:14,429 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 18:30:14,429 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 18:30:14,429 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 18:30:14,429 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 18:30:14,429 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 18:30:14,493 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 18:30:14,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 18:30:14,514 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 18:30:14,516 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 18:30:14,516 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 18:30:14,517 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label06_false-unreach-call.c [2018-07-23 18:30:14,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/233825d2d/a13eef38ed654cbf88e91d7ef2f30a5f/FLAG162eb6265 [2018-07-23 18:30:15,499 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 18:30:15,500 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label06_false-unreach-call.c [2018-07-23 18:30:15,540 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/233825d2d/a13eef38ed654cbf88e91d7ef2f30a5f/FLAG162eb6265 [2018-07-23 18:30:15,561 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/233825d2d/a13eef38ed654cbf88e91d7ef2f30a5f [2018-07-23 18:30:15,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 18:30:15,579 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 18:30:15,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 18:30:15,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 18:30:15,588 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 18:30:15,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:30:15" (1/1) ... [2018-07-23 18:30:15,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa7aa8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:15, skipping insertion in model container [2018-07-23 18:30:15,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:30:15" (1/1) ... [2018-07-23 18:30:15,943 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 18:30:17,174 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:30:17,193 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 18:30:18,136 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 18:30:18,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:18 WrapperNode [2018-07-23 18:30:18,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 18:30:18,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 18:30:18,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 18:30:18,317 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 18:30:18,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:18" (1/1) ... [2018-07-23 18:30:18,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:18" (1/1) ... [2018-07-23 18:30:18,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 18:30:18,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 18:30:18,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 18:30:18,511 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 18:30:18,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:18" (1/1) ... [2018-07-23 18:30:18,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:18" (1/1) ... [2018-07-23 18:30:18,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:18" (1/1) ... [2018-07-23 18:30:18,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:18" (1/1) ... [2018-07-23 18:30:19,185 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:18" (1/1) ... [2018-07-23 18:30:19,243 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:18" (1/1) ... [2018-07-23 18:30:19,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:18" (1/1) ... [2018-07-23 18:30:19,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 18:30:19,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 18:30:19,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 18:30:19,311 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 18:30:19,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:18" (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 [2018-07-23 18:30:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 18:30:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 18:30:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-23 18:30:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4 [2018-07-23 18:30:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 18:30:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 18:30:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 18:30:19,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 18:30:19,412 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-23 18:30:19,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output2 [2018-07-23 18:30:19,413 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-23 18:30:19,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output3 [2018-07-23 18:30:19,414 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 18:30:19,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output [2018-07-23 18:30:31,919 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 18:30:31,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:30:31 BoogieIcfgContainer [2018-07-23 18:30:31,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 18:30:31,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 18:30:31,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 18:30:31,925 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 18:30:31,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 06:30:15" (1/3) ... [2018-07-23 18:30:31,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5089dca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:30:31, skipping insertion in model container [2018-07-23 18:30:31,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:30:18" (2/3) ... [2018-07-23 18:30:31,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5089dca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:30:31, skipping insertion in model container [2018-07-23 18:30:31,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:30:31" (3/3) ... [2018-07-23 18:30:31,931 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label06_false-unreach-call.c [2018-07-23 18:30:31,944 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 18:30:31,958 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 18:30:32,027 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 18:30:32,029 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 18:30:32,029 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 18:30:32,029 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 18:30:32,029 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 18:30:32,029 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 18:30:32,030 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 18:30:32,030 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 18:30:32,030 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 18:30:32,075 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states. [2018-07-23 18:30:32,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2018-07-23 18:30:32,114 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:30:32,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:30:32,118 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:30:32,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1844711792, now seen corresponding path program 1 times [2018-07-23 18:30:32,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:30:32,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:30:32,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:30:32,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:30:32,196 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:30:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:30:33,744 WARN L169 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 18:30:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:30:34,832 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:30:34,833 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 18:30:34,833 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:30:34,842 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:30:34,854 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:30:34,855 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:30:34,857 INFO L87 Difference]: Start difference. First operand 907 states. Second operand 3 states. [2018-07-23 18:30:42,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:30:42,432 INFO L93 Difference]: Finished difference Result 2647 states and 5102 transitions. [2018-07-23 18:30:42,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:30:42,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 774 [2018-07-23 18:30:42,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:30:42,479 INFO L225 Difference]: With dead ends: 2647 [2018-07-23 18:30:42,479 INFO L226 Difference]: Without dead ends: 1738 [2018-07-23 18:30:42,492 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:30:42,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2018-07-23 18:30:42,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738. [2018-07-23 18:30:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1738 states. [2018-07-23 18:30:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3145 transitions. [2018-07-23 18:30:42,688 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 3145 transitions. Word has length 774 [2018-07-23 18:30:42,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:30:42,696 INFO L471 AbstractCegarLoop]: Abstraction has 1738 states and 3145 transitions. [2018-07-23 18:30:42,696 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:30:42,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 3145 transitions. [2018-07-23 18:30:42,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2018-07-23 18:30:42,734 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:30:42,735 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:30:42,736 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:30:42,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1657474279, now seen corresponding path program 1 times [2018-07-23 18:30:42,737 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:30:42,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:30:42,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:30:42,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:30:42,740 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:30:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:30:43,870 WARN L169 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 18:30:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:30:44,478 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:30:44,478 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 18:30:44,478 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:30:44,482 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 18:30:44,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 18:30:44,482 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:30:44,483 INFO L87 Difference]: Start difference. First operand 1738 states and 3145 transitions. Second operand 3 states. [2018-07-23 18:30:52,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:30:52,403 INFO L93 Difference]: Finished difference Result 5140 states and 9420 transitions. [2018-07-23 18:30:52,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 18:30:52,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 783 [2018-07-23 18:30:52,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:30:52,439 INFO L225 Difference]: With dead ends: 5140 [2018-07-23 18:30:52,439 INFO L226 Difference]: Without dead ends: 3408 [2018-07-23 18:30:52,447 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 18:30:52,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3408 states. [2018-07-23 18:30:52,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3408 to 3408. [2018-07-23 18:30:52,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3408 states. [2018-07-23 18:30:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 5843 transitions. [2018-07-23 18:30:52,561 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 5843 transitions. Word has length 783 [2018-07-23 18:30:52,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:30:52,563 INFO L471 AbstractCegarLoop]: Abstraction has 3408 states and 5843 transitions. [2018-07-23 18:30:52,563 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 18:30:52,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 5843 transitions. [2018-07-23 18:30:52,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2018-07-23 18:30:52,598 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:30:52,599 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:30:52,599 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:30:52,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1378721061, now seen corresponding path program 1 times [2018-07-23 18:30:52,600 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:30:52,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:30:52,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:30:52,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:30:52,602 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:30:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:30:52,904 WARN L169 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-23 18:30:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:30:53,389 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:30:53,390 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 18:30:53,390 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:30:53,392 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 18:30:53,392 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 18:30:53,392 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 18:30:53,393 INFO L87 Difference]: Start difference. First operand 3408 states and 5843 transitions. Second operand 6 states. [2018-07-23 18:31:03,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:31:03,623 INFO L93 Difference]: Finished difference Result 8684 states and 14847 transitions. [2018-07-23 18:31:03,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 18:31:03,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 790 [2018-07-23 18:31:03,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:31:03,658 INFO L225 Difference]: With dead ends: 8684 [2018-07-23 18:31:03,659 INFO L226 Difference]: Without dead ends: 5282 [2018-07-23 18:31:03,669 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 18:31:03,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5282 states. [2018-07-23 18:31:03,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5282 to 5242. [2018-07-23 18:31:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5242 states. [2018-07-23 18:31:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5242 states to 5242 states and 8097 transitions. [2018-07-23 18:31:03,825 INFO L78 Accepts]: Start accepts. Automaton has 5242 states and 8097 transitions. Word has length 790 [2018-07-23 18:31:03,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:31:03,825 INFO L471 AbstractCegarLoop]: Abstraction has 5242 states and 8097 transitions. [2018-07-23 18:31:03,825 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 18:31:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5242 states and 8097 transitions. [2018-07-23 18:31:03,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 796 [2018-07-23 18:31:03,848 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:31:03,848 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:31:03,849 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:31:03,849 INFO L82 PathProgramCache]: Analyzing trace with hash 308430287, now seen corresponding path program 1 times [2018-07-23 18:31:03,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:31:03,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:31:03,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:31:03,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:31:03,851 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:31:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:31:04,124 WARN L169 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4 [2018-07-23 18:31:04,434 WARN L169 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-23 18:31:04,691 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:31:04,692 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 18:31:04,692 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-07-23 18:31:04,692 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 18:31:04,693 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 18:31:04,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 18:31:04,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 18:31:04,694 INFO L87 Difference]: Start difference. First operand 5242 states and 8097 transitions. Second operand 7 states. [2018-07-23 18:31:13,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 18:31:13,776 INFO L93 Difference]: Finished difference Result 13477 states and 21459 transitions. [2018-07-23 18:31:13,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-07-23 18:31:13,781 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 795 [2018-07-23 18:31:13,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 18:31:13,831 INFO L225 Difference]: With dead ends: 13477 [2018-07-23 18:31:13,832 INFO L226 Difference]: Without dead ends: 8241 [2018-07-23 18:31:13,849 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-07-23 18:31:13,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8241 states. [2018-07-23 18:31:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8241 to 8016. [2018-07-23 18:31:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8016 states. [2018-07-23 18:31:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8016 states to 8016 states and 12057 transitions. [2018-07-23 18:31:14,123 INFO L78 Accepts]: Start accepts. Automaton has 8016 states and 12057 transitions. Word has length 795 [2018-07-23 18:31:14,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 18:31:14,124 INFO L471 AbstractCegarLoop]: Abstraction has 8016 states and 12057 transitions. [2018-07-23 18:31:14,124 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 18:31:14,124 INFO L276 IsEmpty]: Start isEmpty. Operand 8016 states and 12057 transitions. [2018-07-23 18:31:14,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2018-07-23 18:31:14,160 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 18:31:14,161 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 18:31:14,161 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___false_unreach_call_c__calculate_output4Err0AssertViolationERROR_FUNCTION]=== [2018-07-23 18:31:14,162 INFO L82 PathProgramCache]: Analyzing trace with hash -811974594, now seen corresponding path program 1 times [2018-07-23 18:31:14,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 18:31:14,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:31:14,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:31:14,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 18:31:14,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 18:31:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:31:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 18:31:15,055 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:31:15,055 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 18:31:15,057 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 811 with the following transitions: [2018-07-23 18:31:15,061 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [405], [407], [857], [861], [867], [871], [873], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2662], [2666], [2670], [2674], [2677], [2678], [2682], [2686], [2690], [2693], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3506], [3510], [3514], [3518], [3522], [3526], [3529], [3530], [3531], [3532], [3534], [3535], [3536], [3538], [3540] [2018-07-23 18:31:15,240 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 18:31:15,241 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-07-23 18:34:28,423 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-07-23 18:34:28,425 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-07-23 18:34:28,426 INFO L419 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-07-23 18:34:28,426 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 18:34:28,427 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 [2018-07-23 18:34:28,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 18:34:28,442 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-23 18:34:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 18:34:28,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-23 18:34:29,012 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-23 18:34:29,215 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-23 18:34:29,215 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 18:34:29,223 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 18:34:29,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 06:34:29 BoogieIcfgContainer [2018-07-23 18:34:29,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 18:34:29,226 INFO L168 Benchmark]: Toolchain (without parser) took 253647.84 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -677.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-07-23 18:34:29,229 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-23 18:34:29,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2735.15 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: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2018-07-23 18:34:29,230 INFO L168 Benchmark]: Boogie Procedure Inliner took 194.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 18:34:29,231 INFO L168 Benchmark]: Boogie Preprocessor took 799.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.6 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.8 MB. Max. memory is 7.1 GB. [2018-07-23 18:34:29,232 INFO L168 Benchmark]: RCFGBuilder took 12609.87 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 208.1 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -121.5 MB). Peak memory consumption was 753.1 MB. Max. memory is 7.1 GB. [2018-07-23 18:34:29,235 INFO L168 Benchmark]: TraceAbstraction took 237302.60 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 276.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-07-23 18:34:29,246 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2735.15 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: 222.0 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 194.23 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 799.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 801.6 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 99.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12609.87 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 208.1 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -121.5 MB). Peak memory consumption was 753.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237302.60 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 276.1 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4640]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4640). Cancelled while BasicCegarLoop was analyzing trace of length 811 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 907 locations, 1 error locations. TIMEOUT Result, 237.2s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 35.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2140 SDtfs, 6647 SDslu, 466 SDs, 0 SdLazy, 15336 SolverSat, 5030 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 10 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8016occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 193.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 4 MinimizatonAttempts, 265 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 3142 NumberOfCodeBlocks, 3142 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 3138 ConstructedInterpolants, 0 QuantifiedInterpolants, 6256856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 37/37 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/Problem04_label06_false-unreach-call.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_18-34-29-284.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem04_label06_false-unreach-call.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_18-34-29-284.csv Completed graceful shutdown