java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/eureka_05_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 19:30:09,236 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 19:30:09,239 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 19:30:09,258 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 19:30:09,258 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 19:30:09,260 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 19:30:09,261 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 19:30:09,263 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 19:30:09,265 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 19:30:09,266 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 19:30:09,267 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 19:30:09,267 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 19:30:09,268 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 19:30:09,269 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 19:30:09,270 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 19:30:09,271 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 19:30:09,272 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 19:30:09,274 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 19:30:09,277 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 19:30:09,279 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 19:30:09,280 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 19:30:09,281 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 19:30:09,284 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 19:30:09,284 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 19:30:09,285 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 19:30:09,286 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 19:30:09,287 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 19:30:09,290 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 19:30:09,292 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 19:30:09,293 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 19:30:09,293 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 19:30:09,294 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 19:30:09,294 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 19:30:09,296 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 19:30:09,297 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 19:30:09,300 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 19:30:09,300 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf [2018-09-11 19:30:09,322 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 19:30:09,322 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 19:30:09,323 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 19:30:09,326 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 19:30:09,327 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 19:30:09,327 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 19:30:09,327 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 19:30:09,327 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 19:30:09,327 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 19:30:09,328 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 19:30:09,328 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 19:30:09,328 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 19:30:09,329 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 19:30:09,329 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 19:30:09,330 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 19:30:09,331 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 19:30:09,331 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 19:30:09,331 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 19:30:09,331 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 19:30:09,331 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 19:30:09,332 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 19:30:09,332 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 19:30:09,332 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 19:30:09,333 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 19:30:09,334 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 19:30:09,334 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 19:30:09,334 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 19:30:09,334 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 19:30:09,335 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 19:30:09,335 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 19:30:09,335 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 19:30:09,335 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 19:30:09,335 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 19:30:09,336 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 19:30:09,405 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 19:30:09,419 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 19:30:09,425 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 19:30:09,426 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 19:30:09,427 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 19:30:09,428 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/eureka_05_true-unreach-call_true-termination.i [2018-09-11 19:30:09,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc6e5122/8d2eca85fb214090b75851e1ed555e6c/FLAG0b53e5680 [2018-09-11 19:30:09,968 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 19:30:09,969 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/eureka_05_true-unreach-call_true-termination.i [2018-09-11 19:30:09,977 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc6e5122/8d2eca85fb214090b75851e1ed555e6c/FLAG0b53e5680 [2018-09-11 19:30:09,993 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc6e5122/8d2eca85fb214090b75851e1ed555e6c [2018-09-11 19:30:10,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 19:30:10,010 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 19:30:10,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 19:30:10,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 19:30:10,021 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 19:30:10,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:30:09" (1/1) ... [2018-09-11 19:30:10,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c1f22a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10, skipping insertion in model container [2018-09-11 19:30:10,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:30:09" (1/1) ... [2018-09-11 19:30:10,237 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 19:30:10,299 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:30:10,326 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 19:30:10,343 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:30:10,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10 WrapperNode [2018-09-11 19:30:10,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 19:30:10,365 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 19:30:10,365 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 19:30:10,366 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 19:30:10,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10" (1/1) ... [2018-09-11 19:30:10,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10" (1/1) ... [2018-09-11 19:30:10,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 19:30:10,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 19:30:10,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 19:30:10,394 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 19:30:10,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10" (1/1) ... [2018-09-11 19:30:10,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10" (1/1) ... [2018-09-11 19:30:10,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10" (1/1) ... [2018-09-11 19:30:10,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10" (1/1) ... [2018-09-11 19:30:10,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10" (1/1) ... [2018-09-11 19:30:10,435 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10" (1/1) ... [2018-09-11 19:30:10,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10" (1/1) ... [2018-09-11 19:30:10,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 19:30:10,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 19:30:10,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 19:30:10,447 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 19:30:10,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10" (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 [2018-09-11 19:30:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 19:30:10,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 19:30:10,526 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i__SelectionSort [2018-09-11 19:30:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i__SelectionSort [2018-09-11 19:30:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 19:30:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 19:30:10,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 19:30:10,527 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 19:30:10,528 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 19:30:10,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 19:30:11,057 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 19:30:11,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:30:11 BoogieIcfgContainer [2018-09-11 19:30:11,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 19:30:11,059 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 19:30:11,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 19:30:11,062 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 19:30:11,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:30:09" (1/3) ... [2018-09-11 19:30:11,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53493063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:30:11, skipping insertion in model container [2018-09-11 19:30:11,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:10" (2/3) ... [2018-09-11 19:30:11,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53493063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:30:11, skipping insertion in model container [2018-09-11 19:30:11,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:30:11" (3/3) ... [2018-09-11 19:30:11,066 INFO L112 eAbstractionObserver]: Analyzing ICFG eureka_05_true-unreach-call_true-termination.i [2018-09-11 19:30:11,076 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 19:30:11,083 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 19:30:11,133 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 19:30:11,134 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 19:30:11,134 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 19:30:11,134 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 19:30:11,134 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 19:30:11,135 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 19:30:11,135 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 19:30:11,135 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 19:30:11,135 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 19:30:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-09-11 19:30:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-11 19:30:11,163 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:30:11,165 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:30:11,166 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:30:11,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1318846397, now seen corresponding path program 1 times [2018-09-11 19:30:11,174 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:30:11,176 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-09-11 19:30:11,178 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [35], [37], [41], [54], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89], [90], [91] [2018-09-11 19:30:11,238 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:30:11,238 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:30:11,287 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:30:11,289 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-09-11 19:30:11,310 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:30:11,358 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 100% of their original sizes. [2018-09-11 19:30:11,359 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:30:11,361 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:30:11,362 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:30:11,363 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-11 19:30:11,363 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:30:11,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-11 19:30:11,373 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-11 19:30:11,374 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 19:30:11,376 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2018-09-11 19:30:11,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:30:11,401 INFO L93 Difference]: Finished difference Result 63 states and 81 transitions. [2018-09-11 19:30:11,401 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-11 19:30:11,403 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-09-11 19:30:11,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:30:11,412 INFO L225 Difference]: With dead ends: 63 [2018-09-11 19:30:11,412 INFO L226 Difference]: Without dead ends: 32 [2018-09-11 19:30:11,418 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 19:30:11,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-09-11 19:30:11,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-09-11 19:30:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-09-11 19:30:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2018-09-11 19:30:11,458 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 19 [2018-09-11 19:30:11,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:30:11,459 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-09-11 19:30:11,459 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-11 19:30:11,459 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2018-09-11 19:30:11,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-11 19:30:11,460 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:30:11,460 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:30:11,461 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:30:11,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1884353144, now seen corresponding path program 1 times [2018-09-11 19:30:11,461 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:30:11,462 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-09-11 19:30:11,462 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [37], [41], [45], [48], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89], [90], [91] [2018-09-11 19:30:11,464 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:30:11,464 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:30:11,472 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:30:11,472 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 6 variables. [2018-09-11 19:30:11,508 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:30:11,528 INFO L232 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 54.17% of their original sizes. [2018-09-11 19:30:11,529 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:30:11,573 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:30:11,573 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:30:11,574 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-11 19:30:11,574 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:30:11,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-11 19:30:11,575 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-11 19:30:11,575 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-11 19:30:11,576 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 4 states. [2018-09-11 19:30:11,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:30:11,743 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2018-09-11 19:30:11,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-11 19:30:11,744 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-09-11 19:30:11,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:30:11,746 INFO L225 Difference]: With dead ends: 58 [2018-09-11 19:30:11,746 INFO L226 Difference]: Without dead ends: 35 [2018-09-11 19:30:11,748 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-11 19:30:11,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-09-11 19:30:11,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-09-11 19:30:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-09-11 19:30:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2018-09-11 19:30:11,758 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 21 [2018-09-11 19:30:11,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:30:11,758 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2018-09-11 19:30:11,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-11 19:30:11,759 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2018-09-11 19:30:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-09-11 19:30:11,760 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:30:11,760 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:30:11,760 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:30:11,761 INFO L82 PathProgramCache]: Analyzing trace with hash 362283247, now seen corresponding path program 1 times [2018-09-11 19:30:11,761 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:30:11,761 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 25 with the following transitions: [2018-09-11 19:30:11,761 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [37], [41], [45], [48], [50], [52], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89], [90], [91] [2018-09-11 19:30:11,763 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:30:11,764 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:30:11,788 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:30:11,788 INFO L272 AbstractInterpreter]: Visited 14 different actions 34 times. Merged at 3 different actions 15 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 8 variables. [2018-09-11 19:30:11,814 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:30:11,843 INFO L232 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 45.45% of their original sizes. [2018-09-11 19:30:11,843 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:30:11,964 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:30:11,964 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:30:11,965 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-11 19:30:11,965 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:30:11,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-11 19:30:11,965 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-11 19:30:11,966 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 19:30:11,966 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2018-09-11 19:30:12,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:30:12,444 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-09-11 19:30:12,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-11 19:30:12,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-09-11 19:30:12,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:30:12,449 INFO L225 Difference]: With dead ends: 59 [2018-09-11 19:30:12,449 INFO L226 Difference]: Without dead ends: 46 [2018-09-11 19:30:12,450 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-11 19:30:12,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-09-11 19:30:12,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 36. [2018-09-11 19:30:12,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-09-11 19:30:12,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-09-11 19:30:12,464 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 24 [2018-09-11 19:30:12,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:30:12,465 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-09-11 19:30:12,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-11 19:30:12,465 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-09-11 19:30:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-09-11 19:30:12,466 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:30:12,467 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-11 19:30:12,467 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:30:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash -314923675, now seen corresponding path program 1 times [2018-09-11 19:30:12,467 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:30:12,468 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-09-11 19:30:12,468 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [15], [18], [31], [33], [37], [41], [45], [48], [50], [52], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89], [90], [91] [2018-09-11 19:30:12,471 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:30:12,472 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:30:12,486 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:30:12,487 INFO L272 AbstractInterpreter]: Visited 17 different actions 37 times. Merged at 3 different actions 15 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 9 variables. [2018-09-11 19:30:12,490 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:30:12,537 INFO L232 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 40.44% of their original sizes. [2018-09-11 19:30:12,537 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:30:12,688 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:30:12,688 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:30:12,688 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-11 19:30:12,689 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:30:12,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-11 19:30:12,690 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-11 19:30:12,690 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-11 19:30:12,690 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 7 states. [2018-09-11 19:30:13,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:30:13,125 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2018-09-11 19:30:13,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-11 19:30:13,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-09-11 19:30:13,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:30:13,129 INFO L225 Difference]: With dead ends: 71 [2018-09-11 19:30:13,129 INFO L226 Difference]: Without dead ends: 50 [2018-09-11 19:30:13,130 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-09-11 19:30:13,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-11 19:30:13,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2018-09-11 19:30:13,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-09-11 19:30:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-09-11 19:30:13,142 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 30 [2018-09-11 19:30:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:30:13,142 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-09-11 19:30:13,142 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-11 19:30:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-09-11 19:30:13,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-11 19:30:13,144 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:30:13,144 INFO L376 BasicCegarLoop]: trace histogram [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] [2018-09-11 19:30:13,144 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_eureka____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:30:13,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1174102332, now seen corresponding path program 1 times [2018-09-11 19:30:13,145 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:30:13,145 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-09-11 19:30:13,145 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [11], [15], [18], [20], [23], [27], [31], [33], [37], [41], [45], [48], [50], [52], [57], [61], [66], [74], [77], [79], [85], [86], [87], [89], [90], [91] [2018-09-11 19:30:13,148 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:30:13,148 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown