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/veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 19:32:02,329 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 19:32:02,331 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 19:32:02,347 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 19:32:02,347 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 19:32:02,348 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 19:32:02,349 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 19:32:02,351 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 19:32:02,353 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 19:32:02,354 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 19:32:02,355 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 19:32:02,355 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 19:32:02,356 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 19:32:02,357 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 19:32:02,358 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 19:32:02,359 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 19:32:02,360 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 19:32:02,362 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 19:32:02,364 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 19:32:02,366 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 19:32:02,367 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 19:32:02,368 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 19:32:02,371 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-11 19:32:02,380 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 19:32:02,403 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 19:32:02,403 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 19:32:02,404 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 19:32:02,405 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 19:32:02,405 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 19:32:02,405 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 19:32:02,405 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 19:32:02,406 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 19:32:02,406 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 19:32:02,406 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 19:32:02,406 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 19:32:02,406 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 19:32:02,407 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 19:32:02,407 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 19:32:02,408 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 19:32:02,408 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 19:32:02,408 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 19:32:02,408 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 19:32:02,409 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 19:32:02,409 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 19:32:02,409 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 19:32:02,409 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 19:32:02,410 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 19:32:02,410 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 19:32:02,410 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 19:32:02,410 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 19:32:02,411 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 19:32:02,411 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 19:32:02,411 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 19:32:02,411 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 19:32:02,412 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 19:32:02,412 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 19:32:02,412 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 19:32:02,412 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 19:32:02,457 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 19:32:02,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 19:32:02,485 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 19:32:02,486 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 19:32:02,487 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 19:32:02,488 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i [2018-09-11 19:32:02,883 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ba9418ea/bc2dc06946d74d4b814d53620ac2caba/FLAG3afc14b95 [2018-09-11 19:32:03,072 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 19:32:03,073 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i [2018-09-11 19:32:03,085 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ba9418ea/bc2dc06946d74d4b814d53620ac2caba/FLAG3afc14b95 [2018-09-11 19:32:03,108 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ba9418ea/bc2dc06946d74d4b814d53620ac2caba [2018-09-11 19:32:03,120 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 19:32:03,124 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 19:32:03,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 19:32:03,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 19:32:03,132 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 19:32:03,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:32:03" (1/1) ... [2018-09-11 19:32:03,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13303bdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03, skipping insertion in model container [2018-09-11 19:32:03,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:32:03" (1/1) ... [2018-09-11 19:32:03,305 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 19:32:03,359 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:32:03,380 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 19:32:03,397 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:32:03,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03 WrapperNode [2018-09-11 19:32:03,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 19:32:03,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 19:32:03,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 19:32:03,422 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 19:32:03,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03" (1/1) ... [2018-09-11 19:32:03,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03" (1/1) ... [2018-09-11 19:32:03,468 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 19:32:03,471 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 19:32:03,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 19:32:03,471 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 19:32:03,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03" (1/1) ... [2018-09-11 19:32:03,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03" (1/1) ... [2018-09-11 19:32:03,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03" (1/1) ... [2018-09-11 19:32:03,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03" (1/1) ... [2018-09-11 19:32:03,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03" (1/1) ... [2018-09-11 19:32:03,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03" (1/1) ... [2018-09-11 19:32:03,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03" (1/1) ... [2018-09-11 19:32:03,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 19:32:03,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 19:32:03,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 19:32:03,520 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 19:32:03,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03" (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 19:32:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 19:32:03,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 19:32:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 19:32:03,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 19:32:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 19:32:03,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 19:32:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_veris_c_sendmail__tTflag_arr_one_loop_true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 19:32:03,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_veris_c_sendmail__tTflag_arr_one_loop_true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 19:32:04,183 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 19:32:04,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:32:04 BoogieIcfgContainer [2018-09-11 19:32:04,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 19:32:04,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 19:32:04,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 19:32:04,189 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 19:32:04,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:32:03" (1/3) ... [2018-09-11 19:32:04,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411b0332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:32:04, skipping insertion in model container [2018-09-11 19:32:04,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:32:03" (2/3) ... [2018-09-11 19:32:04,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411b0332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:32:04, skipping insertion in model container [2018-09-11 19:32:04,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:32:04" (3/3) ... [2018-09-11 19:32:04,192 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i [2018-09-11 19:32:04,202 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 19:32:04,216 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 19:32:04,270 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 19:32:04,271 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 19:32:04,271 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 19:32:04,272 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 19:32:04,272 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 19:32:04,272 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 19:32:04,272 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 19:32:04,272 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 19:32:04,273 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 19:32:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-09-11 19:32:04,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-11 19:32:04,298 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:32:04,299 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:32:04,300 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_veris_c_sendmail__tTflag_arr_one_loop_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:32:04,306 INFO L82 PathProgramCache]: Analyzing trace with hash -900586403, now seen corresponding path program 1 times [2018-09-11 19:32:04,309 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:32:04,310 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-09-11 19:32:04,313 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [18], [20], [32], [37], [40], [42], [48], [49], [50], [52] [2018-09-11 19:32:04,366 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:32:04,366 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:32:04,475 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:32:04,477 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 33 variables. [2018-09-11 19:32:04,492 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:32:04,597 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 96.67% of their original sizes. [2018-09-11 19:32:04,597 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:32:04,631 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:32:04,632 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:32:04,632 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 19:32:04,633 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:32:04,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 19:32:04,646 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 19:32:04,647 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 19:32:04,650 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-09-11 19:32:04,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:32:04,734 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2018-09-11 19:32:04,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 19:32:04,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-09-11 19:32:04,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:32:04,746 INFO L225 Difference]: With dead ends: 39 [2018-09-11 19:32:04,746 INFO L226 Difference]: Without dead ends: 17 [2018-09-11 19:32:04,750 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 19:32:04,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-11 19:32:04,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-11 19:32:04,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-11 19:32:04,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-09-11 19:32:04,787 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-09-11 19:32:04,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:32:04,788 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-09-11 19:32:04,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 19:32:04,788 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-09-11 19:32:04,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-11 19:32:04,789 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:32:04,789 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:32:04,790 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_veris_c_sendmail__tTflag_arr_one_loop_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:32:04,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1574784468, now seen corresponding path program 1 times [2018-09-11 19:32:04,790 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:32:04,791 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-11 19:32:04,791 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [20], [24], [28], [37], [40], [42], [48], [49], [50], [52] [2018-09-11 19:32:04,793 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:32:04,793 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:32:04,822 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-09-11 19:32:04,996 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-11 19:32:04,997 INFO L272 AbstractInterpreter]: Visited 15 different actions 15 times. Never merged. Never widened. Never found a fixpoint. Largest state had 33 variables. [2018-09-11 19:32:05,024 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-11 19:32:05,044 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-11 19:32:05,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 07:32:05 BoogieIcfgContainer [2018-09-11 19:32:05,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-11 19:32:05,045 INFO L168 Benchmark]: Toolchain (without parser) took 1924.76 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -681.3 MB). Peak memory consumption was 85.2 MB. Max. memory is 7.1 GB. [2018-09-11 19:32:05,048 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-09-11 19:32:05,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-11 19:32:05,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.60 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-11 19:32:05,050 INFO L168 Benchmark]: Boogie Preprocessor took 48.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-11 19:32:05,051 INFO L168 Benchmark]: RCFGBuilder took 664.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-09-11 19:32:05,052 INFO L168 Benchmark]: TraceAbstraction took 859.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 122.9 MB). Peak memory consumption was 122.9 MB. Max. memory is 7.1 GB. [2018-09-11 19:32:05,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 295.62 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.60 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.11 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 664.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 766.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 859.59 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 122.9 MB). Peak memory consumption was 122.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L12] CALL char in[11]; [L12] RET char in[11]; [L13] char *s; [L14] unsigned char c; [L15] unsigned int i, j; [L16] int idx_in; [L18] i = 0 [L18] COND FALSE !(i < 10) [L22] CALL in[10] = 0 [L22] RET in[10] = 0 [L23] idx_in = 0 [L24] s = in [L25] i = 0 [L26] CALL, EXPR in[idx_in] [L26] RET, EXPR in[idx_in] [L26] c = in[idx_in] [L27] COND FALSE !(('0' <= c) && (c <= '9')) [L35] CALL __VERIFIER_assert (i >= 0) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. UNKNOWN Result, 0.7s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 8 SDslu, 14 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9505050505050505 AbsIntWeakeningRatio, 2.6666666666666665 AbsIntAvgWeakeningVarsNumRemoved, 4.583333333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: No data available, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-11_19-32-05-071.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-11_19-32-05-071.csv Received shutdown request...