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/Problem15_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 14:31:18,154 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 14:31:18,156 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 14:31:18,175 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 14:31:18,176 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 14:31:18,177 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 14:31:18,181 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 14:31:18,183 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 14:31:18,186 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 14:31:18,187 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 14:31:18,194 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 14:31:18,194 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 14:31:18,198 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 14:31:18,199 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 14:31:18,203 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 14:31:18,204 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 14:31:18,205 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 14:31:18,207 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 14:31:18,209 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 14:31:18,210 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 14:31:18,211 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 14:31:18,216 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 14:31:18,219 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 14:31:18,220 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 14:31:18,220 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 14:31:18,223 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 14:31:18,224 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 14:31:18,225 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 14:31:18,231 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 14:31:18,232 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 14:31:18,233 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 14:31:18,235 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-24 14:31:18,235 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-24 14:31:18,236 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-24 14:31:18,237 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-24 14:31:18,237 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-24 14:31:18,238 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 14:31:18,263 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 14:31:18,264 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 14:31:18,264 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 14:31:18,265 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 14:31:18,265 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 14:31:18,265 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 14:31:18,265 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 14:31:18,265 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 14:31:18,266 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 14:31:18,266 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 14:31:18,266 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 14:31:18,267 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 14:31:18,267 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 14:31:18,267 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 14:31:18,267 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 14:31:18,268 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 14:31:18,268 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 14:31:18,268 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 14:31:18,268 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 14:31:18,268 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 14:31:18,268 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 14:31:18,269 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 14:31:18,269 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 14:31:18,269 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 14:31:18,269 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 14:31:18,269 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 14:31:18,270 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 14:31:18,270 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 14:31:18,270 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 14:31:18,270 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 14:31:18,270 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 14:31:18,271 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 14:31:18,271 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 14:31:18,319 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 14:31:18,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 14:31:18,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 14:31:18,342 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 14:31:18,343 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 14:31:18,344 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c [2018-07-24 14:31:18,687 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef15dece/fdbc1a6927394303b4af734c294ef9c6/FLAGd987505b7 [2018-07-24 14:31:19,107 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 14:31:19,108 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c [2018-07-24 14:31:19,132 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef15dece/fdbc1a6927394303b4af734c294ef9c6/FLAGd987505b7 [2018-07-24 14:31:19,148 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef15dece/fdbc1a6927394303b4af734c294ef9c6 [2018-07-24 14:31:19,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 14:31:19,161 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 14:31:19,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 14:31:19,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 14:31:19,173 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 14:31:19,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:31:19" (1/1) ... [2018-07-24 14:31:19,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483b7022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:19, skipping insertion in model container [2018-07-24 14:31:19,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 02:31:19" (1/1) ... [2018-07-24 14:31:19,481 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 14:31:20,110 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:31:20,131 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 14:31:20,448 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 14:31:20,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:20 WrapperNode [2018-07-24 14:31:20,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 14:31:20,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 14:31:20,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 14:31:20,576 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 14:31:20,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:20" (1/1) ... [2018-07-24 14:31:20,637 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:20" (1/1) ... [2018-07-24 14:31:20,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 14:31:20,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 14:31:20,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 14:31:20,818 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 14:31:21,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:20" (1/1) ... [2018-07-24 14:31:21,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:20" (1/1) ... [2018-07-24 14:31:21,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:20" (1/1) ... [2018-07-24 14:31:21,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:20" (1/1) ... [2018-07-24 14:31:21,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:20" (1/1) ... [2018-07-24 14:31:21,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:20" (1/1) ... [2018-07-24 14:31:21,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:20" (1/1) ... [2018-07-24 14:31:21,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 14:31:21,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 14:31:21,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 14:31:21,472 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 14:31:21,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:20" (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 14:31:21,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 14:31:21,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 14:31:21,549 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 14:31:21,549 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 14:31:21,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 14:31:21,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 14:31:21,550 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 14:31:21,550 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 14:31:21,550 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 14:31:21,551 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 14:31:28,538 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 14:31:28,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:31:28 BoogieIcfgContainer [2018-07-24 14:31:28,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 14:31:28,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 14:31:28,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 14:31:28,544 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 14:31:28,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 02:31:19" (1/3) ... [2018-07-24 14:31:28,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cea9351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:31:28, skipping insertion in model container [2018-07-24 14:31:28,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 02:31:20" (2/3) ... [2018-07-24 14:31:28,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cea9351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 02:31:28, skipping insertion in model container [2018-07-24 14:31:28,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 02:31:28" (3/3) ... [2018-07-24 14:31:28,552 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label10_true-unreach-call.c [2018-07-24 14:31:28,560 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 14:31:28,569 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 14:31:28,632 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 14:31:28,632 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 14:31:28,633 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 14:31:28,633 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 14:31:28,633 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 14:31:28,633 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 14:31:28,633 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 14:31:28,633 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 14:31:28,634 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 14:31:28,678 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-07-24 14:31:28,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-07-24 14:31:28,690 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:31:28,691 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] [2018-07-24 14:31:28,691 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 14:31:28,696 INFO L82 PathProgramCache]: Analyzing trace with hash 411103961, now seen corresponding path program 1 times [2018-07-24 14:31:28,699 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:31:28,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:31:28,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:31:28,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:31:28,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:31:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:31:29,151 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 14:31:29,153 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:31:29,153 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:31:29,154 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:31:29,159 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:31:29,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:31:29,176 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:31:29,178 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-07-24 14:31:37,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:31:37,916 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-07-24 14:31:37,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:31:37,917 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-07-24 14:31:37,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:31:37,947 INFO L225 Difference]: With dead ends: 1558 [2018-07-24 14:31:37,947 INFO L226 Difference]: Without dead ends: 1114 [2018-07-24 14:31:37,958 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 14:31:37,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-07-24 14:31:38,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-07-24 14:31:38,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-07-24 14:31:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-07-24 14:31:38,110 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 41 [2018-07-24 14:31:38,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:31:38,111 INFO L471 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-07-24 14:31:38,111 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:31:38,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-07-24 14:31:38,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-07-24 14:31:38,126 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:31:38,126 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:31:38,127 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 14:31:38,127 INFO L82 PathProgramCache]: Analyzing trace with hash 634687564, now seen corresponding path program 1 times [2018-07-24 14:31:38,128 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:31:38,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:31:38,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:31:38,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:31:38,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:31:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:31:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:31:38,447 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:31:38,448 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 14:31:38,448 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:31:38,451 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:31:38,451 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:31:38,451 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 14:31:38,451 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-07-24 14:31:48,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:31:48,966 INFO L93 Difference]: Finished difference Result 4063 states and 7149 transitions. [2018-07-24 14:31:48,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:31:48,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-07-24 14:31:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:31:48,994 INFO L225 Difference]: With dead ends: 4063 [2018-07-24 14:31:48,994 INFO L226 Difference]: Without dead ends: 2978 [2018-07-24 14:31:49,009 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 14:31:49,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2018-07-24 14:31:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2940. [2018-07-24 14:31:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2940 states. [2018-07-24 14:31:49,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 4056 transitions. [2018-07-24 14:31:49,122 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 4056 transitions. Word has length 114 [2018-07-24 14:31:49,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:31:49,123 INFO L471 AbstractCegarLoop]: Abstraction has 2940 states and 4056 transitions. [2018-07-24 14:31:49,123 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:31:49,123 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 4056 transitions. [2018-07-24 14:31:49,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-07-24 14:31:49,129 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:31:49,129 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:31:49,130 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 14:31:49,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1054696356, now seen corresponding path program 1 times [2018-07-24 14:31:49,130 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:31:49,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:31:49,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:31:49,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:31:49,132 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:31:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:31:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:31:49,362 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:31:49,362 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:31:49,362 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:31:49,363 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:31:49,363 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:31:49,363 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:31:49,364 INFO L87 Difference]: Start difference. First operand 2940 states and 4056 transitions. Second operand 4 states. [2018-07-24 14:31:54,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:31:54,831 INFO L93 Difference]: Finished difference Result 10366 states and 14865 transitions. [2018-07-24 14:31:54,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:31:54,833 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-07-24 14:31:54,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:31:54,888 INFO L225 Difference]: With dead ends: 10366 [2018-07-24 14:31:54,888 INFO L226 Difference]: Without dead ends: 7432 [2018-07-24 14:31:54,916 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:31:54,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7432 states. [2018-07-24 14:31:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7432 to 7424. [2018-07-24 14:31:55,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7424 states. [2018-07-24 14:31:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7424 states to 7424 states and 9741 transitions. [2018-07-24 14:31:55,103 INFO L78 Accepts]: Start accepts. Automaton has 7424 states and 9741 transitions. Word has length 122 [2018-07-24 14:31:55,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:31:55,104 INFO L471 AbstractCegarLoop]: Abstraction has 7424 states and 9741 transitions. [2018-07-24 14:31:55,104 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:31:55,104 INFO L276 IsEmpty]: Start isEmpty. Operand 7424 states and 9741 transitions. [2018-07-24 14:31:55,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-24 14:31:55,110 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:31:55,110 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:31:55,110 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 14:31:55,110 INFO L82 PathProgramCache]: Analyzing trace with hash 298577814, now seen corresponding path program 1 times [2018-07-24 14:31:55,111 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:31:55,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:31:55,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:31:55,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:31:55,112 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:31:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:31:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:31:55,404 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:31:55,404 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 14:31:55,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:31:55,422 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:31:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:31:55,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:31:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:31:55,895 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:31:56,112 WARN L169 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2018-07-24 14:31:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:31:56,543 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 14:31:56,543 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [7] total 12 [2018-07-24 14:31:56,543 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:31:56,544 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:31:56,544 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:31:56,544 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:31:56,544 INFO L87 Difference]: Start difference. First operand 7424 states and 9741 transitions. Second operand 5 states. [2018-07-24 14:32:08,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:32:08,328 INFO L93 Difference]: Finished difference Result 19735 states and 26604 transitions. [2018-07-24 14:32:08,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:32:08,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2018-07-24 14:32:08,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:32:08,389 INFO L225 Difference]: With dead ends: 19735 [2018-07-24 14:32:08,389 INFO L226 Difference]: Without dead ends: 12317 [2018-07-24 14:32:08,442 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:32:08,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12317 states. [2018-07-24 14:32:08,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12317 to 11946. [2018-07-24 14:32:08,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11946 states. [2018-07-24 14:32:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11946 states to 11946 states and 16028 transitions. [2018-07-24 14:32:08,741 INFO L78 Accepts]: Start accepts. Automaton has 11946 states and 16028 transitions. Word has length 153 [2018-07-24 14:32:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:32:08,742 INFO L471 AbstractCegarLoop]: Abstraction has 11946 states and 16028 transitions. [2018-07-24 14:32:08,742 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:32:08,742 INFO L276 IsEmpty]: Start isEmpty. Operand 11946 states and 16028 transitions. [2018-07-24 14:32:08,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-07-24 14:32:08,753 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:32:08,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:32:08,754 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 14:32:08,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1969369293, now seen corresponding path program 1 times [2018-07-24 14:32:08,754 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:32:08,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:32:08,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:32:08,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:32:08,756 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:32:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:32:09,352 WARN L169 SmtUtils]: Spent 389.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-07-24 14:32:09,712 WARN L169 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-07-24 14:32:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:32:10,011 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:32:10,011 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 14:32:10,011 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:32:10,012 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 14:32:10,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 14:32:10,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-07-24 14:32:10,013 INFO L87 Difference]: Start difference. First operand 11946 states and 16028 transitions. Second operand 6 states. [2018-07-24 14:32:21,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:32:21,907 INFO L93 Difference]: Finished difference Result 24707 states and 33644 transitions. [2018-07-24 14:32:21,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 14:32:21,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 186 [2018-07-24 14:32:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:32:21,964 INFO L225 Difference]: With dead ends: 24707 [2018-07-24 14:32:21,965 INFO L226 Difference]: Without dead ends: 13075 [2018-07-24 14:32:22,009 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:32:22,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13075 states. [2018-07-24 14:32:22,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13075 to 12997. [2018-07-24 14:32:22,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12997 states. [2018-07-24 14:32:22,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12997 states to 12997 states and 17514 transitions. [2018-07-24 14:32:22,326 INFO L78 Accepts]: Start accepts. Automaton has 12997 states and 17514 transitions. Word has length 186 [2018-07-24 14:32:22,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:32:22,327 INFO L471 AbstractCegarLoop]: Abstraction has 12997 states and 17514 transitions. [2018-07-24 14:32:22,327 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 14:32:22,327 INFO L276 IsEmpty]: Start isEmpty. Operand 12997 states and 17514 transitions. [2018-07-24 14:32:22,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-07-24 14:32:22,339 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:32:22,339 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:32:22,339 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 14:32:22,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1976437543, now seen corresponding path program 1 times [2018-07-24 14:32:22,340 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:32:22,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:32:22,341 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:32:22,341 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:32:22,341 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:32:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:32:22,618 WARN L169 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-07-24 14:32:22,934 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 68 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:32:22,934 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:32:22,934 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 14:32:22,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:32:22,949 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:32:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:32:23,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:32:23,265 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 14:32:23,265 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:32:23,569 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 68 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:32:23,590 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:32:23,591 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11 [2018-07-24 14:32:23,591 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:32:23,591 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:32:23,592 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:32:23,592 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:32:23,592 INFO L87 Difference]: Start difference. First operand 12997 states and 17514 transitions. Second operand 5 states. [2018-07-24 14:32:30,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:32:30,480 INFO L93 Difference]: Finished difference Result 33141 states and 46172 transitions. [2018-07-24 14:32:30,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 14:32:30,482 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 205 [2018-07-24 14:32:30,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:32:30,575 INFO L225 Difference]: With dead ends: 33141 [2018-07-24 14:32:30,575 INFO L226 Difference]: Without dead ends: 20458 [2018-07-24 14:32:30,623 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 405 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:32:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20458 states. [2018-07-24 14:32:30,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20458 to 19858. [2018-07-24 14:32:30,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19858 states. [2018-07-24 14:32:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19858 states to 19858 states and 25924 transitions. [2018-07-24 14:32:31,028 INFO L78 Accepts]: Start accepts. Automaton has 19858 states and 25924 transitions. Word has length 205 [2018-07-24 14:32:31,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:32:31,028 INFO L471 AbstractCegarLoop]: Abstraction has 19858 states and 25924 transitions. [2018-07-24 14:32:31,029 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:32:31,029 INFO L276 IsEmpty]: Start isEmpty. Operand 19858 states and 25924 transitions. [2018-07-24 14:32:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2018-07-24 14:32:31,068 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:32:31,069 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 14:32:31,069 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 14:32:31,070 INFO L82 PathProgramCache]: Analyzing trace with hash 422161671, now seen corresponding path program 1 times [2018-07-24 14:32:31,070 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:32:31,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:32:31,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:32:31,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:32:31,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:32:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:32:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 108 proven. 221 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-07-24 14:32:31,759 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:32:31,759 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:32:31,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:32:31,776 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:32:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:32:31,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:32:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-07-24 14:32:32,099 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:32:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 110 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 14:32:32,970 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:32:32,971 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 5 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 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:32:33,132 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:32:33,132 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:32:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:32:33,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:32:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-07-24 14:32:33,467 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:32:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 110 proven. 144 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-07-24 14:32:33,918 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:32:33,918 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 9 [2018-07-24 14:32:33,918 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:32:33,922 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 14:32:33,923 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 14:32:33,923 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-07-24 14:32:33,923 INFO L87 Difference]: Start difference. First operand 19858 states and 25924 transitions. Second operand 7 states. [2018-07-24 14:32:42,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:32:42,382 INFO L93 Difference]: Finished difference Result 58933 states and 78862 transitions. [2018-07-24 14:32:42,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-07-24 14:32:42,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2018-07-24 14:32:42,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:32:42,536 INFO L225 Difference]: With dead ends: 58933 [2018-07-24 14:32:42,536 INFO L226 Difference]: Without dead ends: 39389 [2018-07-24 14:32:42,597 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1209 GetRequests, 1192 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:32:42,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39389 states. [2018-07-24 14:32:43,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39389 to 36955. [2018-07-24 14:32:43,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36955 states. [2018-07-24 14:32:43,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36955 states to 36955 states and 45289 transitions. [2018-07-24 14:32:43,649 INFO L78 Accepts]: Start accepts. Automaton has 36955 states and 45289 transitions. Word has length 298 [2018-07-24 14:32:43,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:32:43,649 INFO L471 AbstractCegarLoop]: Abstraction has 36955 states and 45289 transitions. [2018-07-24 14:32:43,650 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 14:32:43,650 INFO L276 IsEmpty]: Start isEmpty. Operand 36955 states and 45289 transitions. [2018-07-24 14:32:43,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-07-24 14:32:43,668 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:32:43,668 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:32:43,669 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 14:32:43,669 INFO L82 PathProgramCache]: Analyzing trace with hash -103293048, now seen corresponding path program 1 times [2018-07-24 14:32:43,670 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:32:43,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:32:43,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:32:43,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:32:43,671 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:32:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:32:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 14:32:44,794 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:32:44,795 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:32:44,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:32:44,819 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:32:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:32:44,953 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:32:45,695 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 14:32:45,695 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:32:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 68 proven. 107 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-24 14:32:46,610 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 14:32:46,610 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-07-24 14:32:46,610 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:32:46,610 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 14:32:46,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 14:32:46,611 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-07-24 14:32:46,611 INFO L87 Difference]: Start difference. First operand 36955 states and 45289 transitions. Second operand 5 states. [2018-07-24 14:33:00,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:33:00,385 INFO L93 Difference]: Finished difference Result 79663 states and 98784 transitions. [2018-07-24 14:33:00,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 14:33:00,385 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 354 [2018-07-24 14:33:00,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:33:00,558 INFO L225 Difference]: With dead ends: 79663 [2018-07-24 14:33:00,559 INFO L226 Difference]: Without dead ends: 43022 [2018-07-24 14:33:00,674 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 720 GetRequests, 706 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-07-24 14:33:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43022 states. [2018-07-24 14:33:01,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43022 to 41314. [2018-07-24 14:33:01,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41314 states. [2018-07-24 14:33:01,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41314 states to 41314 states and 50708 transitions. [2018-07-24 14:33:01,417 INFO L78 Accepts]: Start accepts. Automaton has 41314 states and 50708 transitions. Word has length 354 [2018-07-24 14:33:01,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:33:01,417 INFO L471 AbstractCegarLoop]: Abstraction has 41314 states and 50708 transitions. [2018-07-24 14:33:01,418 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 14:33:01,418 INFO L276 IsEmpty]: Start isEmpty. Operand 41314 states and 50708 transitions. [2018-07-24 14:33:01,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2018-07-24 14:33:01,434 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:33:01,434 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:33:01,434 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 14:33:01,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1540555844, now seen corresponding path program 1 times [2018-07-24 14:33:01,435 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:33:01,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:33:01,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:33:01,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:33:01,436 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:33:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:33:01,897 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-07-24 14:33:01,897 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 14:33:01,897 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 14:33:01,897 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 14:33:01,898 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 14:33:01,898 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 14:33:01,898 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-24 14:33:01,898 INFO L87 Difference]: Start difference. First operand 41314 states and 50708 transitions. Second operand 4 states. [2018-07-24 14:33:08,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:33:08,501 INFO L93 Difference]: Finished difference Result 93274 states and 120917 transitions. [2018-07-24 14:33:08,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-24 14:33:08,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 389 [2018-07-24 14:33:08,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:33:08,690 INFO L225 Difference]: With dead ends: 93274 [2018-07-24 14:33:08,690 INFO L226 Difference]: Without dead ends: 52274 [2018-07-24 14:33:08,861 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 14:33:08,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52274 states. [2018-07-24 14:33:09,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52274 to 51924. [2018-07-24 14:33:09,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51924 states. [2018-07-24 14:33:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51924 states to 51924 states and 64601 transitions. [2018-07-24 14:33:09,772 INFO L78 Accepts]: Start accepts. Automaton has 51924 states and 64601 transitions. Word has length 389 [2018-07-24 14:33:09,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:33:09,773 INFO L471 AbstractCegarLoop]: Abstraction has 51924 states and 64601 transitions. [2018-07-24 14:33:09,773 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 14:33:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 51924 states and 64601 transitions. [2018-07-24 14:33:09,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2018-07-24 14:33:09,810 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:33:09,811 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:33:09,811 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:33:09,811 INFO L82 PathProgramCache]: Analyzing trace with hash -311185326, now seen corresponding path program 1 times [2018-07-24 14:33:09,812 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:33:09,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:33:09,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:33:09,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:33:09,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:33:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:33:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 28 proven. 179 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 14:33:11,140 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:33:11,140 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:33:11,151 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:33:11,151 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:33:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:33:11,315 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:33:12,028 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:33:12,028 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:33:12,188 WARN L169 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-07-24 14:33:12,525 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:33:12,545 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:33:12,545 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 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:33:12,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:33:12,561 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:33:12,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:33:12,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:33:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 74 proven. 139 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:33:13,272 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:33:13,751 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:33:13,753 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:33:13,753 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 5, 7, 5] total 20 [2018-07-24 14:33:13,754 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:33:13,755 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-24 14:33:13,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-24 14:33:13,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2018-07-24 14:33:13,756 INFO L87 Difference]: Start difference. First operand 51924 states and 64601 transitions. Second operand 11 states. [2018-07-24 14:33:42,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:33:42,391 INFO L93 Difference]: Finished difference Result 147879 states and 198977 transitions. [2018-07-24 14:33:42,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-07-24 14:33:42,391 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 461 [2018-07-24 14:33:42,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:33:42,709 INFO L225 Difference]: With dead ends: 147879 [2018-07-24 14:33:42,710 INFO L226 Difference]: Without dead ends: 96269 [2018-07-24 14:33:42,961 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 1914 GetRequests, 1850 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=699, Invalid=3333, Unknown=0, NotChecked=0, Total=4032 [2018-07-24 14:33:43,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96269 states. [2018-07-24 14:33:44,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96269 to 94799. [2018-07-24 14:33:44,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94799 states. [2018-07-24 14:33:45,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94799 states to 94799 states and 118015 transitions. [2018-07-24 14:33:45,232 INFO L78 Accepts]: Start accepts. Automaton has 94799 states and 118015 transitions. Word has length 461 [2018-07-24 14:33:45,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:33:45,233 INFO L471 AbstractCegarLoop]: Abstraction has 94799 states and 118015 transitions. [2018-07-24 14:33:45,233 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-24 14:33:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 94799 states and 118015 transitions. [2018-07-24 14:33:45,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2018-07-24 14:33:45,461 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:33:45,461 INFO L353 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 14:33:45,461 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:33:45,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1851400070, now seen corresponding path program 1 times [2018-07-24 14:33:45,462 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:33:45,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:33:45,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:33:45,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:33:45,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:33:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:33:46,524 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 317 proven. 84 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2018-07-24 14:33:46,525 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:33:46,525 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:33:46,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:33:46,540 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:33:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:33:46,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:33:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 654 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-07-24 14:33:47,211 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:33:48,145 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 317 proven. 84 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2018-07-24 14:33:48,167 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:33:48,167 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 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:33:48,185 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:33:48,186 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:33:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:33:48,744 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:33:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 654 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-07-24 14:33:49,007 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:33:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 317 proven. 84 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2018-07-24 14:33:49,364 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 14:33:49,364 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 11 [2018-07-24 14:33:49,364 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 14:33:49,366 INFO L450 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-07-24 14:33:49,366 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-07-24 14:33:49,366 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-07-24 14:33:49,367 INFO L87 Difference]: Start difference. First operand 94799 states and 118015 transitions. Second operand 9 states. [2018-07-24 14:34:00,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 14:34:00,920 INFO L93 Difference]: Finished difference Result 182062 states and 241367 transitions. [2018-07-24 14:34:00,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-07-24 14:34:00,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 726 [2018-07-24 14:34:00,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 14:34:01,261 INFO L225 Difference]: With dead ends: 182062 [2018-07-24 14:34:01,261 INFO L226 Difference]: Without dead ends: 87577 [2018-07-24 14:34:01,539 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2930 GetRequests, 2906 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2018-07-24 14:34:01,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87577 states. [2018-07-24 14:34:02,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87577 to 86804. [2018-07-24 14:34:02,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86804 states. [2018-07-24 14:34:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86804 states to 86804 states and 111652 transitions. [2018-07-24 14:34:04,409 INFO L78 Accepts]: Start accepts. Automaton has 86804 states and 111652 transitions. Word has length 726 [2018-07-24 14:34:04,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 14:34:04,410 INFO L471 AbstractCegarLoop]: Abstraction has 86804 states and 111652 transitions. [2018-07-24 14:34:04,410 INFO L472 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-07-24 14:34:04,410 INFO L276 IsEmpty]: Start isEmpty. Operand 86804 states and 111652 transitions. [2018-07-24 14:34:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-07-24 14:34:04,486 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 14:34:04,487 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-07-24 14:34:04,487 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 14:34:04,488 INFO L82 PathProgramCache]: Analyzing trace with hash 532000351, now seen corresponding path program 1 times [2018-07-24 14:34:04,488 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 14:34:04,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:34:04,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:34:04,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 14:34:04,489 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 14:34:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:34:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-07-24 14:34:05,268 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:34:05,269 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 14:34:05,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:34:05,280 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:34:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:34:05,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:34:18,545 WARN L169 SmtUtils]: Spent 12.71 s on a formula simplification. DAG size of input: 118 DAG size of output: 52 [2018-07-24 14:34:20,098 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 590 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:34:20,098 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:34:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 485 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 14:34:22,119 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 14:34:22,120 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 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:34:22,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 14:34:22,136 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 14:34:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 14:34:22,731 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 14:34:36,174 WARN L169 SmtUtils]: Spent 13.22 s on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2018-07-24 14:34:37,386 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 455 proven. 111 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-07-24 14:34:37,386 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 14:34:37,840 WARN L169 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 27 [2018-07-24 14:34:45,360 WARN L169 SmtUtils]: Spent 7.33 s on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2018-07-24 14:34:49,805 WARN L169 SmtUtils]: Spent 4.10 s on a formula simplification that was a NOOP. DAG size: 48 [2018-07-24 14:34:49,810 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-07-24 14:34:49,921 WARN L136 XnfTransformerHelper]: expecting exponential blowup for input size 6 Received shutdown request... [2018-07-24 14:35:25,214 WARN L169 SmtUtils]: Spent 33.08 s on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2018-07-24 14:35:25,215 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-07-24 14:35:25,416 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 14:35:25,417 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-24 14:35:25,423 WARN L202 ceAbstractionStarter]: Timeout [2018-07-24 14:35:25,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.07 02:35:25 BoogieIcfgContainer [2018-07-24 14:35:25,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-24 14:35:25,425 INFO L168 Benchmark]: Toolchain (without parser) took 246264.59 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -497.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-07-24 14:35:25,427 INFO L168 Benchmark]: CDTParser took 0.22 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 14:35:25,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1413.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 127.0 MB). Peak memory consumption was 127.0 MB. Max. memory is 7.1 GB. [2018-07-24 14:35:25,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 241.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-24 14:35:25,430 INFO L168 Benchmark]: Boogie Preprocessor took 654.14 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 900.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. [2018-07-24 14:35:25,433 INFO L168 Benchmark]: RCFGBuilder took 7067.36 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 314.8 MB). Peak memory consumption was 314.8 MB. Max. memory is 7.1 GB. [2018-07-24 14:35:25,433 INFO L168 Benchmark]: TraceAbstraction took 236883.33 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 65.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-07-24 14:35:25,442 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1413.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 127.0 MB). Peak memory consumption was 127.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 241.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 654.14 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 900.7 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 89.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7067.36 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 314.8 MB). Peak memory consumption was 314.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 236883.33 ms. Allocated memory was 2.4 GB in the beginning and 3.9 GB in the end (delta: 1.4 GB). Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 65.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 109). Cancelled while BasicCegarLoop was analyzing trace of length 730 with TraceHistMax 4, while TraceCheckSpWp was constructing backward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 236.8s OverallTime, 12 OverallIterations, 5 TraceHistogramMax, 126.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2329 SDtfs, 21202 SDslu, 3448 SDs, 0 SdLazy, 40818 SolverSat, 9168 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 106.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7543 GetRequests, 7378 SyntacticMatches, 16 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1299 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94799occurred in iteration=10, 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: 9.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 7853 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 14.2s InterpolantComputationTime, 6731 NumberOfCodeBlocks, 6731 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 10384 ConstructedInterpolants, 0 QuantifiedInterpolants, 15324063 SizeOfPredicates, 14 NumberOfNonLiveVariables, 5544 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 29 InterpolantComputations, 9 PerfectInterpolantSequences, 6579/8028 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/Problem15_label10_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_14-35-25-458.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem15_label10_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-24_14-35-25-458.csv Completed graceful shutdown