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_INTCON-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-08 15:06:28,045 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-08 15:06:28,048 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-08 15:06:28,061 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-08 15:06:28,062 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-08 15:06:28,063 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-08 15:06:28,064 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-08 15:06:28,066 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-08 15:06:28,067 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-08 15:06:28,068 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-08 15:06:28,069 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-08 15:06:28,069 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-08 15:06:28,070 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-08 15:06:28,071 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-08 15:06:28,073 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-08 15:06:28,073 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-08 15:06:28,074 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-08 15:06:28,076 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-08 15:06:28,078 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-08 15:06:28,080 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-08 15:06:28,081 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-08 15:06:28,082 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-08 15:06:28,085 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-08 15:06:28,087 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-08 15:06:28,088 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-08 15:06:28,089 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-08 15:06:28,091 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-08 15:06:28,092 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-08 15:06:28,096 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-08 15:06:28,099 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-08 15:06:28,099 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-08 15:06:28,100 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-08-08 15:06:28,104 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf [2018-08-08 15:06:28,123 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-08 15:06:28,123 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-08 15:06:28,124 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-08 15:06:28,124 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-08 15:06:28,124 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-08 15:06:28,125 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-08 15:06:28,125 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-08 15:06:28,125 INFO L133 SettingsManager]: * Octagon Domain=false [2018-08-08 15:06:28,125 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-08 15:06:28,125 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-08 15:06:28,126 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-08 15:06:28,126 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-08 15:06:28,127 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-08 15:06:28,127 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-08 15:06:28,127 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-08 15:06:28,127 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-08 15:06:28,127 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-08 15:06:28,128 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-08 15:06:28,128 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-08 15:06:28,128 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-08 15:06:28,128 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-08 15:06:28,128 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-08 15:06:28,129 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-08 15:06:28,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-08 15:06:28,129 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-08 15:06:28,129 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-08 15:06:28,130 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-08 15:06:28,130 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-08-08 15:06:28,130 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-08 15:06:28,130 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-08 15:06:28,130 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-08 15:06:28,130 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-08 15:06:28,131 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-08 15:06:28,187 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-08 15:06:28,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-08 15:06:28,203 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-08 15:06:28,205 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-08 15:06:28,206 INFO L276 PluginConnector]: CDTParser initialized [2018-08-08 15:06:28,206 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle_true-unreach-call_true-termination.i [2018-08-08 15:06:28,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c175d5ad7/e9dc39c8929d4f088947ce25bdcccb69/FLAG18bb67c3f [2018-08-08 15:06:28,747 INFO L276 CDTParser]: Found 1 translation units. [2018-08-08 15:06:28,747 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle_true-unreach-call_true-termination.i [2018-08-08 15:06:28,758 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c175d5ad7/e9dc39c8929d4f088947ce25bdcccb69/FLAG18bb67c3f [2018-08-08 15:06:28,780 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c175d5ad7/e9dc39c8929d4f088947ce25bdcccb69 [2018-08-08 15:06:28,795 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-08 15:06:28,797 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-08 15:06:28,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-08 15:06:28,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-08 15:06:28,813 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-08 15:06:28,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 03:06:28" (1/1) ... [2018-08-08 15:06:28,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd0f50d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:28, skipping insertion in model container [2018-08-08 15:06:28,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.08 03:06:28" (1/1) ... [2018-08-08 15:06:28,962 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-08 15:06:28,998 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 15:06:29,015 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-08 15:06:29,024 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-08 15:06:29,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:29 WrapperNode [2018-08-08 15:06:29,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-08 15:06:29,040 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-08 15:06:29,040 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-08 15:06:29,040 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-08 15:06:29,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:29" (1/1) ... [2018-08-08 15:06:29,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:29" (1/1) ... [2018-08-08 15:06:29,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-08 15:06:29,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-08 15:06:29,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-08 15:06:29,065 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-08 15:06:29,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:29" (1/1) ... [2018-08-08 15:06:29,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:29" (1/1) ... [2018-08-08 15:06:29,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:29" (1/1) ... [2018-08-08 15:06:29,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:29" (1/1) ... [2018-08-08 15:06:29,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:29" (1/1) ... [2018-08-08 15:06:29,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:29" (1/1) ... [2018-08-08 15:06:29,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:29" (1/1) ... [2018-08-08 15:06:29,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-08 15:06:29,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-08 15:06:29,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-08 15:06:29,090 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-08 15:06:29,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:29" (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 [2018-08-08 15:06:29,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-08 15:06:29,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-08 15:06:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-08 15:06:29,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-08 15:06:29,171 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_sendmail_close_angle_true_unreach_call_true_termination_i____VERIFIER_assert [2018-08-08 15:06:29,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_sendmail_close_angle_true_unreach_call_true_termination_i____VERIFIER_assert [2018-08-08 15:06:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-08 15:06:29,173 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-08 15:06:30,028 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-08 15:06:30,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 03:06:30 BoogieIcfgContainer [2018-08-08 15:06:30,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-08 15:06:30,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-08 15:06:30,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-08 15:06:30,036 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-08 15:06:30,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.08 03:06:28" (1/3) ... [2018-08-08 15:06:30,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230ecd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 03:06:30, skipping insertion in model container [2018-08-08 15:06:30,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.08 03:06:29" (2/3) ... [2018-08-08 15:06:30,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230ecd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.08 03:06:30, skipping insertion in model container [2018-08-08 15:06:30,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.08 03:06:30" (3/3) ... [2018-08-08 15:06:30,041 INFO L112 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle_true-unreach-call_true-termination.i [2018-08-08 15:06:30,063 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-08 15:06:30,078 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-08 15:06:30,131 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-08 15:06:30,132 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-08 15:06:30,132 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-08 15:06:30,132 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-08 15:06:30,132 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-08 15:06:30,132 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-08 15:06:30,133 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-08 15:06:30,133 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-08 15:06:30,133 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-08 15:06:30,153 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-08-08 15:06:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-08-08 15:06:30,160 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 15:06:30,161 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 15:06:30,163 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_sendmail_close_angle_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 15:06:30,168 INFO L82 PathProgramCache]: Analyzing trace with hash 162908914, now seen corresponding path program 1 times [2018-08-08 15:06:30,171 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 15:06:30,172 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-08-08 15:06:30,174 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [9], [15], [18], [24], [30], [34], [59], [70], [71], [72], [82] [2018-08-08 15:06:30,215 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-08-08 15:06:30,215 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 15:06:30,305 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-08-08 15:06:30,306 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-08-08 15:06:30,327 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-08-08 15:06:30,392 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 65% of their original sizes. [2018-08-08 15:06:30,392 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-08-08 15:06:30,535 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-08-08 15:06:30,537 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-08 15:06:30,537 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-08-08 15:06:30,537 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-08 15:06:30,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-08-08 15:06:30,547 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-08-08 15:06:30,548 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-08-08 15:06:30,550 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2018-08-08 15:06:31,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-08 15:06:31,054 INFO L93 Difference]: Finished difference Result 82 states and 124 transitions. [2018-08-08 15:06:31,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-08-08 15:06:31,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-08-08 15:06:31,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-08 15:06:31,072 INFO L225 Difference]: With dead ends: 82 [2018-08-08 15:06:31,073 INFO L226 Difference]: Without dead ends: 40 [2018-08-08 15:06:31,079 INFO L603 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-08-08 15:06:31,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-08-08 15:06:31,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2018-08-08 15:06:31,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-08-08 15:06:31,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2018-08-08 15:06:31,174 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 14 [2018-08-08 15:06:31,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-08 15:06:31,175 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2018-08-08 15:06:31,175 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-08-08 15:06:31,175 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2018-08-08 15:06:31,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-08-08 15:06:31,177 INFO L368 BasicCegarLoop]: Found error trace [2018-08-08 15:06:31,178 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-08 15:06:31,178 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_sendmail_close_angle_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-08 15:06:31,178 INFO L82 PathProgramCache]: Analyzing trace with hash -685241696, now seen corresponding path program 1 times [2018-08-08 15:06:31,179 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-08-08 15:06:31,179 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-08-08 15:06:31,179 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [9], [15], [18], [24], [30], [34], [38], [40], [43], [70], [71], [72], [82] [2018-08-08 15:06:31,182 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-08-08 15:06:31,183 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-08-08 15:06:31,223 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-08-08 15:06:31,223 INFO L272 AbstractInterpreter]: Visited 16 different actions 16 times. Never merged. Never widened. Never found a fixpoint. Largest state had 8 variables. [2018-08-08 15:06:31,234 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-08-08 15:06:31,255 WARN L205 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-08-08 15:06:31,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.08 03:06:31 BoogieIcfgContainer [2018-08-08 15:06:31,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-08 15:06:31,257 INFO L168 Benchmark]: Toolchain (without parser) took 2461.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -765.7 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2018-08-08 15:06:31,261 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-08-08 15:06:31,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.31 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. [2018-08-08 15:06:31,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.40 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. [2018-08-08 15:06:31,264 INFO L168 Benchmark]: Boogie Preprocessor took 24.54 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. [2018-08-08 15:06:31,264 INFO L168 Benchmark]: RCFGBuilder took 939.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -818.8 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2018-08-08 15:06:31,266 INFO L168 Benchmark]: TraceAbstraction took 1225.35 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: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-08-08 15:06:31,274 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 239.31 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 24.40 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 24.54 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 939.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 777.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -818.8 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1225.35 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: 42.5 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: 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] int in; [L13] int inlen = __VERIFIER_nondet_int(); [L14] int bufferlen = __VERIFIER_nondet_int(); [L15] int buf; [L16] int buflim; [L17] COND TRUE bufferlen >1 [L18] COND TRUE inlen > 0 [L19] COND TRUE bufferlen < inlen [L20] buf = 0 [L21] in = 0 [L22] buflim = bufferlen - 2 [L23] COND FALSE !(__VERIFIER_nondet_int()) [L35] CALL __VERIFIER_assert(0<=buf) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 1 error locations. UNKNOWN Result, 1.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 49 SDtfs, 94 SDslu, 97 SDs, 0 SdLazy, 33 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 2 AbstIntIterations, 1 AbstIntStrong, 0.8846153846153846 AbsIntWeakeningRatio, 0.7692307692307693 AbsIntAvgWeakeningVarsNumRemoved, 0.9230769230769231 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 10 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/sendmail-close-angle_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-08_15-06-31-297.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/sendmail-close-angle_true-unreach-call_true-termination.i_svcomp-Reach-64bit-ToothlessTaipan_INTCON-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-08_15-06-31-297.csv Received shutdown request...