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/loop-invgen/sendmail-close-angle_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 19:40:54,959 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 19:40:54,961 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 19:40:54,979 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 19:40:54,979 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 19:40:54,981 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 19:40:54,983 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 19:40:54,985 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 19:40:54,988 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 19:40:54,989 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 19:40:54,990 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 19:40:54,990 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 19:40:54,991 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 19:40:54,999 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 19:40:55,004 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 19:40:55,005 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 19:40:55,005 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 19:40:55,009 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 19:40:55,013 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 19:40:55,014 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 19:40:55,016 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 19:40:55,018 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 19:40:55,024 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 19:40:55,024 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 19:40:55,024 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 19:40:55,025 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 19:40:55,027 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 19:40:55,027 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 19:40:55,028 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 19:40:55,029 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 19:40:55,029 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 19:40:55,030 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 19:40:55,030 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 19:40:55,030 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 19:40:55,033 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 19:40:55,033 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 19:40:55,035 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 19:40:55,063 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 19:40:55,063 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 19:40:55,064 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 19:40:55,064 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 19:40:55,064 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 19:40:55,067 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 19:40:55,067 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 19:40:55,068 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 19:40:55,068 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 19:40:55,068 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 19:40:55,068 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 19:40:55,068 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 19:40:55,069 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 19:40:55,070 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 19:40:55,071 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 19:40:55,071 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 19:40:55,071 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 19:40:55,071 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 19:40:55,071 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 19:40:55,072 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 19:40:55,072 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 19:40:55,072 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 19:40:55,072 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 19:40:55,073 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 19:40:55,074 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 19:40:55,074 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 19:40:55,074 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 19:40:55,074 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 19:40:55,074 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 19:40:55,075 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 19:40:55,075 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 19:40:55,075 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 19:40:55,075 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 19:40:55,075 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 19:40:55,141 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 19:40:55,156 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 19:40:55,162 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 19:40:55,163 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 19:40:55,164 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 19:40:55,165 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle_true-unreach-call_true-termination.i [2018-09-11 19:40:55,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bb2688cc/16404d61c3974dfbb748356f4266fd9e/FLAG74a5cf586 [2018-09-11 19:40:55,678 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 19:40:55,679 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle_true-unreach-call_true-termination.i [2018-09-11 19:40:55,688 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bb2688cc/16404d61c3974dfbb748356f4266fd9e/FLAG74a5cf586 [2018-09-11 19:40:55,713 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bb2688cc/16404d61c3974dfbb748356f4266fd9e [2018-09-11 19:40:55,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 19:40:55,729 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 19:40:55,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 19:40:55,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 19:40:55,737 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 19:40:55,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:40:55" (1/1) ... [2018-09-11 19:40:55,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18141405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55, skipping insertion in model container [2018-09-11 19:40:55,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:40:55" (1/1) ... [2018-09-11 19:40:55,902 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 19:40:55,938 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:40:55,956 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 19:40:55,965 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:40:55,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55 WrapperNode [2018-09-11 19:40:55,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 19:40:55,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 19:40:55,980 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 19:40:55,980 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 19:40:55,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55" (1/1) ... [2018-09-11 19:40:55,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55" (1/1) ... [2018-09-11 19:40:56,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 19:40:56,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 19:40:56,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 19:40:56,005 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 19:40:56,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55" (1/1) ... [2018-09-11 19:40:56,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55" (1/1) ... [2018-09-11 19:40:56,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55" (1/1) ... [2018-09-11 19:40:56,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55" (1/1) ... [2018-09-11 19:40:56,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55" (1/1) ... [2018-09-11 19:40:56,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55" (1/1) ... [2018-09-11 19:40:56,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55" (1/1) ... [2018-09-11 19:40:56,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 19:40:56,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 19:40:56,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 19:40:56,029 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 19:40:56,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55" (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 19:40:56,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 19:40:56,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 19:40:56,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 19:40:56,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 19:40:56,108 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 [2018-09-11 19:40:56,109 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 [2018-09-11 19:40:56,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 19:40:56,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 19:40:56,596 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 19:40:56,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:40:56 BoogieIcfgContainer [2018-09-11 19:40:56,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 19:40:56,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 19:40:56,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 19:40:56,603 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 19:40:56,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:40:55" (1/3) ... [2018-09-11 19:40:56,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1460f74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:40:56, skipping insertion in model container [2018-09-11 19:40:56,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:40:55" (2/3) ... [2018-09-11 19:40:56,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1460f74c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:40:56, skipping insertion in model container [2018-09-11 19:40:56,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:40:56" (3/3) ... [2018-09-11 19:40:56,607 INFO L112 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle_true-unreach-call_true-termination.i [2018-09-11 19:40:56,617 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 19:40:56,625 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 19:40:56,676 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 19:40:56,676 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 19:40:56,677 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 19:40:56,677 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 19:40:56,677 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 19:40:56,677 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 19:40:56,677 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 19:40:56,677 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 19:40:56,678 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 19:40:56,698 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-09-11 19:40:56,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-11 19:40:56,705 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:40:56,706 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:40:56,708 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]=== [2018-09-11 19:40:56,713 INFO L82 PathProgramCache]: Analyzing trace with hash 162908914, now seen corresponding path program 1 times [2018-09-11 19:40:56,716 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:40:56,717 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-11 19:40:56,719 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [9], [15], [18], [24], [30], [34], [59], [70], [71], [72], [82] [2018-09-11 19:40:56,784 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:40:56,784 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:40:56,842 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:40:56,843 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 7 variables. [2018-09-11 19:40:56,855 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:40:56,917 INFO L232 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 65% of their original sizes. [2018-09-11 19:40:56,918 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:40:57,079 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:40:57,081 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:40:57,082 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-11 19:40:57,082 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:40:57,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-11 19:40:57,096 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-11 19:40:57,097 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-09-11 19:40:57,100 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 7 states. [2018-09-11 19:40:57,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:40:57,821 INFO L93 Difference]: Finished difference Result 82 states and 124 transitions. [2018-09-11 19:40:57,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-11 19:40:57,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-09-11 19:40:57,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:40:57,834 INFO L225 Difference]: With dead ends: 82 [2018-09-11 19:40:57,834 INFO L226 Difference]: Without dead ends: 40 [2018-09-11 19:40:57,839 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-09-11 19:40:57,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-09-11 19:40:57,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2018-09-11 19:40:57,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-09-11 19:40:57,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2018-09-11 19:40:57,892 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 14 [2018-09-11 19:40:57,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:40:57,893 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2018-09-11 19:40:57,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-11 19:40:57,893 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2018-09-11 19:40:57,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-11 19:40:57,894 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:40:57,894 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:40:57,895 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]=== [2018-09-11 19:40:57,895 INFO L82 PathProgramCache]: Analyzing trace with hash -685241696, now seen corresponding path program 1 times [2018-09-11 19:40:57,895 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:40:57,896 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-09-11 19:40:57,896 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [9], [15], [18], [24], [30], [34], [38], [40], [43], [70], [71], [72], [82] [2018-09-11 19:40:57,898 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:40:57,898 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:40:57,911 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:40:57,911 INFO L272 AbstractInterpreter]: Visited 15 different actions 15 times. Never merged. Never widened. Never found a fixpoint. Largest state had 8 variables. [2018-09-11 19:40:57,928 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:40:57,957 INFO L232 lantSequenceWeakener]: Weakened 6 states. On average, predicates are now at 67.78% of their original sizes. [2018-09-11 19:40:57,957 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:40:58,178 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:40:58,179 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:40:58,179 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-11 19:40:58,179 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:40:58,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-11 19:40:58,180 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-11 19:40:58,181 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-09-11 19:40:58,181 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand 10 states. [2018-09-11 19:40:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:40:58,618 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2018-09-11 19:40:58,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-11 19:40:58,619 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2018-09-11 19:40:58,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:40:58,621 INFO L225 Difference]: With dead ends: 46 [2018-09-11 19:40:58,621 INFO L226 Difference]: Without dead ends: 44 [2018-09-11 19:40:58,622 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-09-11 19:40:58,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-11 19:40:58,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2018-09-11 19:40:58,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-09-11 19:40:58,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2018-09-11 19:40:58,638 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 16 [2018-09-11 19:40:58,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:40:58,639 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2018-09-11 19:40:58,639 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-11 19:40:58,639 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2018-09-11 19:40:58,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-09-11 19:40:58,640 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:40:58,641 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:40:58,641 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_sendmail_close_angle_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:40:58,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1165848799, now seen corresponding path program 1 times [2018-09-11 19:40:58,642 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:40:58,642 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 28 with the following transitions: [2018-09-11 19:40:58,642 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [9], [12], [14], [15], [18], [24], [30], [34], [38], [40], [43], [63], [70], [71], [72], [82], [83], [84], [85], [86] [2018-09-11 19:40:58,644 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:40:58,645 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:40:58,662 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:40:58,662 INFO L272 AbstractInterpreter]: Visited 22 different actions 30 times. Never merged. Never widened. Never found a fixpoint. Largest state had 9 variables. [2018-09-11 19:40:58,689 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:40:58,752 INFO L232 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 70% of their original sizes. [2018-09-11 19:40:58,752 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:40:59,196 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:40:59,197 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:40:59,197 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-09-11 19:40:59,197 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:40:59,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-11 19:40:59,198 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-11 19:40:59,198 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-09-11 19:40:59,199 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand 12 states. [2018-09-11 19:40:59,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:40:59,896 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-09-11 19:40:59,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-11 19:40:59,899 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2018-09-11 19:40:59,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:40:59,901 INFO L225 Difference]: With dead ends: 65 [2018-09-11 19:40:59,901 INFO L226 Difference]: Without dead ends: 58 [2018-09-11 19:40:59,903 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-09-11 19:40:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-09-11 19:40:59,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2018-09-11 19:40:59,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-09-11 19:40:59,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2018-09-11 19:40:59,921 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 27 [2018-09-11 19:40:59,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:40:59,922 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2018-09-11 19:40:59,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-11 19:40:59,922 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2018-09-11 19:40:59,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-09-11 19:40:59,923 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:40:59,923 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:40:59,924 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_sendmail_close_angle_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:40:59,924 INFO L82 PathProgramCache]: Analyzing trace with hash -775319678, now seen corresponding path program 1 times [2018-09-11 19:40:59,924 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:40:59,925 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 30 with the following transitions: [2018-09-11 19:40:59,925 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [9], [12], [14], [15], [18], [24], [30], [34], [38], [40], [45], [50], [53], [55], [70], [71], [72], [74], [75], [76], [77], [78] [2018-09-11 19:40:59,927 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:40:59,927 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:40:59,940 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:40:59,940 INFO L272 AbstractInterpreter]: Visited 24 different actions 32 times. Never merged. Never widened. Never found a fixpoint. Largest state had 10 variables. [2018-09-11 19:40:59,970 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:41:00,010 INFO L232 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 57.45% of their original sizes. [2018-09-11 19:41:00,011 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:41:00,636 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:41:00,636 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:41:00,636 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-11 19:41:00,637 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:41:00,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-11 19:41:00,637 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-11 19:41:00,637 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-09-11 19:41:00,638 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand 14 states. [2018-09-11 19:41:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:41:01,515 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2018-09-11 19:41:01,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-11 19:41:01,516 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 29 [2018-09-11 19:41:01,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:41:01,518 INFO L225 Difference]: With dead ends: 67 [2018-09-11 19:41:01,518 INFO L226 Difference]: Without dead ends: 65 [2018-09-11 19:41:01,519 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2018-09-11 19:41:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-09-11 19:41:01,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2018-09-11 19:41:01,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-09-11 19:41:01,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2018-09-11 19:41:01,538 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 29 [2018-09-11 19:41:01,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:41:01,539 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2018-09-11 19:41:01,539 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-11 19:41:01,539 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2018-09-11 19:41:01,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-09-11 19:41:01,540 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:01,541 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:01,541 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_sendmail_close_angle_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:01,541 INFO L82 PathProgramCache]: Analyzing trace with hash -600644733, now seen corresponding path program 1 times [2018-09-11 19:41:01,541 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:01,542 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-09-11 19:41:01,542 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [9], [12], [14], [15], [18], [24], [30], [34], [38], [40], [45], [50], [53], [55], [70], [71], [72], [74], [75], [76], [77], [78], [79], [80] [2018-09-11 19:41:01,545 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:01,545 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:01,564 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:41:01,564 INFO L272 AbstractInterpreter]: Visited 26 different actions 38 times. Never merged. Never widened. Never found a fixpoint. Largest state had 10 variables. [2018-09-11 19:41:01,603 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:41:01,663 INFO L232 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 66.25% of their original sizes. [2018-09-11 19:41:01,663 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:41:02,197 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:41:02,197 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:41:02,198 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2018-09-11 19:41:02,198 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:41:02,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-09-11 19:41:02,199 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-09-11 19:41:02,199 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-11 19:41:02,200 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand 14 states. [2018-09-11 19:41:03,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:41:03,156 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2018-09-11 19:41:03,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-09-11 19:41:03,160 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2018-09-11 19:41:03,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:41:03,161 INFO L225 Difference]: With dead ends: 71 [2018-09-11 19:41:03,162 INFO L226 Difference]: Without dead ends: 69 [2018-09-11 19:41:03,163 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2018-09-11 19:41:03,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-09-11 19:41:03,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 64. [2018-09-11 19:41:03,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-09-11 19:41:03,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2018-09-11 19:41:03,194 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 34 [2018-09-11 19:41:03,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:41:03,196 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2018-09-11 19:41:03,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-09-11 19:41:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2018-09-11 19:41:03,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-09-11 19:41:03,199 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:03,199 INFO L376 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:03,199 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_sendmail_close_angle_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:03,199 INFO L82 PathProgramCache]: Analyzing trace with hash 267512560, now seen corresponding path program 1 times [2018-09-11 19:41:03,200 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:03,200 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 54 with the following transitions: [2018-09-11 19:41:03,200 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [9], [12], [14], [15], [18], [24], [30], [34], [38], [40], [43], [45], [50], [53], [55], [63], [70], [71], [72], [74], [75], [76], [77], [78], [79], [80], [81], [82], [83], [84], [85], [86] [2018-09-11 19:41:03,203 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:03,203 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:03,393 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:41:03,393 INFO L272 AbstractInterpreter]: Visited 34 different actions 401 times. Merged at 14 different actions 98 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 11 variables. [2018-09-11 19:41:03,424 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:41:03,484 INFO L232 lantSequenceWeakener]: Weakened 32 states. On average, predicates are now at 66.25% of their original sizes. [2018-09-11 19:41:03,485 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:41:04,004 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:41:04,005 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:41:04,005 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2018-09-11 19:41:04,005 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:41:04,006 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-09-11 19:41:04,006 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-09-11 19:41:04,006 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2018-09-11 19:41:04,007 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand 17 states. [2018-09-11 19:41:04,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:41:04,885 INFO L93 Difference]: Finished difference Result 87 states and 109 transitions. [2018-09-11 19:41:04,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-11 19:41:04,886 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 53 [2018-09-11 19:41:04,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:41:04,889 INFO L225 Difference]: With dead ends: 87 [2018-09-11 19:41:04,889 INFO L226 Difference]: Without dead ends: 85 [2018-09-11 19:41:04,890 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2018-09-11 19:41:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-09-11 19:41:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2018-09-11 19:41:04,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-09-11 19:41:04,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2018-09-11 19:41:04,911 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 53 [2018-09-11 19:41:04,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:41:04,912 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2018-09-11 19:41:04,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-09-11 19:41:04,912 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2018-09-11 19:41:04,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-09-11 19:41:04,914 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:04,914 INFO L376 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:04,914 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_sendmail_close_angle_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:04,915 INFO L82 PathProgramCache]: Analyzing trace with hash -788018861, now seen corresponding path program 1 times [2018-09-11 19:41:04,915 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:04,915 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 56 with the following transitions: [2018-09-11 19:41:04,915 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [9], [12], [14], [15], [18], [24], [30], [34], [38], [40], [45], [50], [53], [55], [70], [71], [72], [74], [75], [76], [77], [78], [79], [80], [81] [2018-09-11 19:41:04,917 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:04,918 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:05,006 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:41:05,006 INFO L272 AbstractInterpreter]: Visited 27 different actions 249 times. Merged at 10 different actions 70 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 10 variables. [2018-09-11 19:41:05,011 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:41:05,060 INFO L232 lantSequenceWeakener]: Weakened 28 states. On average, predicates are now at 68.81% of their original sizes. [2018-09-11 19:41:05,060 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:41:05,531 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:41:05,532 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:41:05,532 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2018-09-11 19:41:05,533 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:41:05,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-11 19:41:05,533 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-11 19:41:05,534 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2018-09-11 19:41:05,534 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 19 states. [2018-09-11 19:41:06,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:41:06,646 INFO L93 Difference]: Finished difference Result 90 states and 108 transitions. [2018-09-11 19:41:06,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-09-11 19:41:06,647 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 55 [2018-09-11 19:41:06,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:41:06,650 INFO L225 Difference]: With dead ends: 90 [2018-09-11 19:41:06,650 INFO L226 Difference]: Without dead ends: 88 [2018-09-11 19:41:06,651 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2018-09-11 19:41:06,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-11 19:41:06,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2018-09-11 19:41:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-09-11 19:41:06,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 106 transitions. [2018-09-11 19:41:06,675 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 106 transitions. Word has length 55 [2018-09-11 19:41:06,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:41:06,676 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 106 transitions. [2018-09-11 19:41:06,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-09-11 19:41:06,676 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 106 transitions. [2018-09-11 19:41:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-09-11 19:41:06,678 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:06,679 INFO L376 BasicCegarLoop]: trace histogram [8, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:06,679 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_sendmail_close_angle_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:06,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1010097109, now seen corresponding path program 1 times [2018-09-11 19:41:06,679 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:06,679 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 59 with the following transitions: [2018-09-11 19:41:06,680 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [9], [12], [14], [15], [18], [24], [30], [34], [38], [40], [43], [45], [50], [53], [55], [63], [70], [71], [72], [74], [75], [76], [77], [78], [79], [80], [81], [82], [83], [84], [85], [86], [87], [88] [2018-09-11 19:41:06,682 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:41:06,682 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:41:06,755 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:41:06,755 INFO L272 AbstractInterpreter]: Visited 36 different actions 449 times. Merged at 15 different actions 105 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 11 variables. [2018-09-11 19:41:06,782 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:41:06,844 INFO L232 lantSequenceWeakener]: Weakened 36 states. On average, predicates are now at 66.39% of their original sizes. [2018-09-11 19:41:06,845 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:41:07,152 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:41:07,152 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:41:07,153 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-09-11 19:41:07,153 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:41:07,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-09-11 19:41:07,154 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-09-11 19:41:07,155 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-09-11 19:41:07,155 INFO L87 Difference]: Start difference. First operand 88 states and 106 transitions. Second operand 16 states. [2018-09-11 19:41:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:41:07,993 INFO L93 Difference]: Finished difference Result 103 states and 121 transitions. [2018-09-11 19:41:07,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-09-11 19:41:07,994 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2018-09-11 19:41:07,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:41:07,997 INFO L225 Difference]: With dead ends: 103 [2018-09-11 19:41:07,997 INFO L226 Difference]: Without dead ends: 88 [2018-09-11 19:41:07,998 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-09-11 19:41:07,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-09-11 19:41:08,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2018-09-11 19:41:08,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-09-11 19:41:08,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2018-09-11 19:41:08,024 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 58 [2018-09-11 19:41:08,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:41:08,024 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2018-09-11 19:41:08,025 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-09-11 19:41:08,025 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2018-09-11 19:41:08,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-09-11 19:41:08,026 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:41:08,027 INFO L376 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:41:08,027 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_sendmail_close_angle_true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:41:08,027 INFO L82 PathProgramCache]: Analyzing trace with hash 1640235457, now seen corresponding path program 2 times [2018-09-11 19:41:08,027 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:41:08,027 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-09-11 19:41:08,028 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-11 19:41:08,050 WARN L209 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2018-09-11 19:41:08,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 07:41:08 BoogieIcfgContainer [2018-09-11 19:41:08,050 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-11 19:41:08,051 INFO L168 Benchmark]: Toolchain (without parser) took 12325.07 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 874.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -659.3 MB). Peak memory consumption was 215.2 MB. Max. memory is 7.1 GB. [2018-09-11 19:41:08,053 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. [2018-09-11 19:41:08,054 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.15 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 19:41:08,054 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.85 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 19:41:08,055 INFO L168 Benchmark]: Boogie Preprocessor took 24.27 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 19:41:08,055 INFO L168 Benchmark]: RCFGBuilder took 567.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2018-09-11 19:41:08,056 INFO L168 Benchmark]: TraceAbstraction took 11452.97 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 125.8 MB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 126.2 MB). Peak memory consumption was 252.0 MB. Max. memory is 7.1 GB. [2018-09-11 19:41:08,061 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 249.15 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 23.85 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 24.27 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 567.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -796.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11452.97 ms. Allocated memory was 2.3 GB in the beginning and 2.4 GB in the end (delta: 125.8 MB). Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 126.2 MB). Peak memory consumption was 252.0 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 TRUE __VERIFIER_nondet_int() [L25] COND FALSE !(buf == buflim) [L27] CALL __VERIFIER_assert(0<=buf) [L4] COND FALSE, RET !(!(cond)) [L27] __VERIFIER_assert(0<=buf) [L28] CALL __VERIFIER_assert(buf