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_CON-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-dace188-m [2018-09-15 15:47:39,756 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-15 15:47:39,758 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-15 15:47:39,770 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-15 15:47:39,771 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-15 15:47:39,772 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-15 15:47:39,773 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-15 15:47:39,775 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-15 15:47:39,777 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-15 15:47:39,778 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-15 15:47:39,779 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-15 15:47:39,779 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-15 15:47:39,780 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-15 15:47:39,781 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-15 15:47:39,782 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-15 15:47:39,783 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-15 15:47:39,784 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-15 15:47:39,787 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-15 15:47:39,792 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-15 15:47:39,793 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-15 15:47:39,799 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-15 15:47:39,800 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-15 15:47:39,806 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-15 15:47:39,825 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_CON-OldIcfg.epf [2018-09-15 15:47:39,852 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-15 15:47:39,852 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-15 15:47:39,853 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-15 15:47:39,853 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-15 15:47:39,854 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-15 15:47:39,854 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-15 15:47:39,854 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-15 15:47:39,854 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-15 15:47:39,854 INFO L133 SettingsManager]: * Abstract domain=CongruenceDomain [2018-09-15 15:47:39,854 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-15 15:47:39,855 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-15 15:47:39,855 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-15 15:47:39,855 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-15 15:47:39,856 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-15 15:47:39,856 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-15 15:47:39,856 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-15 15:47:39,856 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-15 15:47:39,857 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-15 15:47:39,858 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-15 15:47:39,858 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-15 15:47:39,858 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-15 15:47:39,858 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-15 15:47:39,859 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-15 15:47:39,859 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-15 15:47:39,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-15 15:47:39,859 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-15 15:47:39,859 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-15 15:47:39,860 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-15 15:47:39,860 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-15 15:47:39,860 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-15 15:47:39,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-15 15:47:39,860 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-15 15:47:39,861 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-15 15:47:39,861 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-15 15:47:39,928 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-15 15:47:39,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-15 15:47:39,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-15 15:47:39,945 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-15 15:47:39,946 INFO L276 PluginConnector]: CDTParser initialized [2018-09-15 15:47:39,946 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i [2018-09-15 15:47:40,315 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87378b6a4/50cb8d99caec4924bd020a84f3a87cd7/FLAG638c0fc62 [2018-09-15 15:47:40,469 INFO L277 CDTParser]: Found 1 translation units. [2018-09-15 15:47:40,470 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i [2018-09-15 15:47:40,477 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87378b6a4/50cb8d99caec4924bd020a84f3a87cd7/FLAG638c0fc62 [2018-09-15 15:47:40,493 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87378b6a4/50cb8d99caec4924bd020a84f3a87cd7 [2018-09-15 15:47:40,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-15 15:47:40,507 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-15 15:47:40,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:40,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-15 15:47:40,517 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-15 15:47:40,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463eb615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40, skipping insertion in model container [2018-09-15 15:47:40,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,534 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-15 15:47:40,733 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:40,751 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-15 15:47:40,762 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-15 15:47:40,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40 WrapperNode [2018-09-15 15:47:40,787 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-15 15:47:40,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:40,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-15 15:47:40,788 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-15 15:47:40,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,836 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-15 15:47:40,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-15 15:47:40,837 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-15 15:47:40,837 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-15 15:47:40,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,849 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (1/1) ... [2018-09-15 15:47:40,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-15 15:47:40,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-15 15:47:40,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-15 15:47:40,864 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-15 15:47:40,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (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 [2018-09-15 15:47:41,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-15 15:47:41,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-15 15:47:41,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-15 15:47:41,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-15 15:47:41,000 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-15 15:47:41,001 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-15 15:47:41,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-15 15:47:41,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-15 15:47:41,443 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-15 15:47:41,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:47:41 BoogieIcfgContainer [2018-09-15 15:47:41,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-15 15:47:41,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-15 15:47:41,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-15 15:47:41,448 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-15 15:47:41,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 03:47:40" (1/3) ... [2018-09-15 15:47:41,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fa9861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:47:41, skipping insertion in model container [2018-09-15 15:47:41,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 03:47:40" (2/3) ... [2018-09-15 15:47:41,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57fa9861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 03:47:41, skipping insertion in model container [2018-09-15 15:47:41,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 03:47:41" (3/3) ... [2018-09-15 15:47:41,452 INFO L112 eAbstractionObserver]: Analyzing ICFG veris.c_sendmail__tTflag_arr_one_loop_true-unreach-call_true-termination.i [2018-09-15 15:47:41,461 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-15 15:47:41,470 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-15 15:47:41,516 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-15 15:47:41,517 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-15 15:47:41,517 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-15 15:47:41,517 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-15 15:47:41,517 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-15 15:47:41,518 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-15 15:47:41,518 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-15 15:47:41,518 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-15 15:47:41,518 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-15 15:47:41,536 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-09-15 15:47:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-15 15:47:41,543 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:41,544 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:41,545 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:41,550 INFO L82 PathProgramCache]: Analyzing trace with hash -900586403, now seen corresponding path program 1 times [2018-09-15 15:47:41,552 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:41,553 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 14 with the following transitions: [2018-09-15 15:47:41,556 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [18], [20], [32], [37], [40], [42], [48], [49], [50], [52] [2018-09-15 15:47:41,586 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:41,587 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:41,677 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:41,679 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 33 variables. [2018-09-15 15:47:41,692 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:41,739 INFO L232 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96% of their original sizes. [2018-09-15 15:47:41,740 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:41,759 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:41,760 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:41,760 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 15:47:41,761 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:41,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 15:47:41,774 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 15:47:41,775 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 15:47:41,777 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2018-09-15 15:47:41,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:41,833 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2018-09-15 15:47:41,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 15:47:41,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-09-15 15:47:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:41,842 INFO L225 Difference]: With dead ends: 39 [2018-09-15 15:47:41,842 INFO L226 Difference]: Without dead ends: 17 [2018-09-15 15:47:41,846 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 [2018-09-15 15:47:41,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-15 15:47:41,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-15 15:47:41,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-15 15:47:41,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-09-15 15:47:41,882 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-09-15 15:47:41,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:41,883 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-09-15 15:47:41,883 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 15:47:41,883 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-09-15 15:47:41,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-15 15:47:41,884 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:41,885 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:41,886 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:41,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1574784468, now seen corresponding path program 1 times [2018-09-15 15:47:41,886 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:41,887 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-15 15:47:41,887 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [20], [24], [28], [37], [40], [42], [48], [49], [50], [52] [2018-09-15 15:47:41,888 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:41,889 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:41,897 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-15 15:47:41,897 INFO L272 AbstractInterpreter]: Visited 8 different actions 8 times. Never merged. Never widened. Never found a fixpoint. Largest state had 33 variables. [2018-09-15 15:47:41,932 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-15 15:47:41,948 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 90% of their original sizes. [2018-09-15 15:47:41,948 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-15 15:47:41,977 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-15 15:47:41,978 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-15 15:47:41,978 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-15 15:47:41,978 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-15 15:47:41,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-15 15:47:41,980 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-15 15:47:41,980 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 15:47:41,980 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 3 states. [2018-09-15 15:47:42,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-15 15:47:42,041 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2018-09-15 15:47:42,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-15 15:47:42,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2018-09-15 15:47:42,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-15 15:47:42,042 INFO L225 Difference]: With dead ends: 28 [2018-09-15 15:47:42,042 INFO L226 Difference]: Without dead ends: 20 [2018-09-15 15:47:42,044 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-15 15:47:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-15 15:47:42,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-09-15 15:47:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-15 15:47:42,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-09-15 15:47:42,050 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2018-09-15 15:47:42,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-15 15:47:42,050 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-09-15 15:47:42,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-15 15:47:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-09-15 15:47:42,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-15 15:47:42,051 INFO L368 BasicCegarLoop]: Found error trace [2018-09-15 15:47:42,052 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-15 15:47:42,052 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-15 15:47:42,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1822958319, now seen corresponding path program 1 times [2018-09-15 15:47:42,052 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-15 15:47:42,053 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-15 15:47:42,053 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [16], [20], [24], [28], [37], [40], [42], [48], [49], [50], [52] [2018-09-15 15:47:42,054 INFO L148 AbstractInterpreter]: Using domain CongruenceDomain [2018-09-15 15:47:42,054 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CongruenceDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-15 15:47:42,090 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-09-15 15:47:42,090 INFO L272 AbstractInterpreter]: Visited 17 different actions 25 times. Merged at 3 different actions 6 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 35 variables. [2018-09-15 15:47:42,113 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-15 15:47:42,134 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-15 15:47:42,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 03:47:42 BoogieIcfgContainer [2018-09-15 15:47:42,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-15 15:47:42,136 INFO L168 Benchmark]: Toolchain (without parser) took 1632.35 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -732.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:42,138 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. [2018-09-15 15:47:42,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.12 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. [2018-09-15 15:47:42,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.55 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. [2018-09-15 15:47:42,141 INFO L168 Benchmark]: Boogie Preprocessor took 26.16 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. [2018-09-15 15:47:42,141 INFO L168 Benchmark]: RCFGBuilder took 580.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -787.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:42,143 INFO L168 Benchmark]: TraceAbstraction took 690.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2018-09-15 15:47:42,148 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 280.12 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 48.55 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 26.16 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 580.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 747.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -787.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 690.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 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 TRUE i < 10 [L19] CALL in[i] = __VERIFIER_nondet_char() [L19] RET in[i] = __VERIFIER_nondet_char() [L18] i++ [L18] i++ [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, 0.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 37 SDtfs, 9 SDslu, 26 SDs, 0 SdLazy, 12 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 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, 0.2s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.75 AbsIntWeakeningRatio, 2.4615384615384617 AbsIntAvgWeakeningVarsNumRemoved, 1.3076923076923077 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 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_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-15_15-47-42-161.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_CON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-15_15-47-42-161.csv Received shutdown request...