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_INT-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 13:26:15,556 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 13:26:15,559 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 13:26:15,576 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 13:26:15,577 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 13:26:15,581 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 13:26:15,582 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 13:26:15,585 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 13:26:15,596 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 13:26:15,597 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 13:26:15,600 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 13:26:15,601 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 13:26:15,602 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 13:26:15,604 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 13:26:15,608 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 13:26:15,609 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 13:26:15,610 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 13:26:15,615 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 13:26:15,619 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 13:26:15,622 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 13:26:15,623 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 13:26:15,625 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 13:26:15,629 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 13:26:15,629 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 13:26:15,629 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 13:26:15,631 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 13:26:15,633 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 13:26:15,634 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 13:26:15,635 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 13:26:15,637 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 13:26:15,637 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 13:26:15,640 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 13:26:15,640 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 13:26:15,640 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 13:26:15,642 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 13:26:15,643 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 13:26:15,643 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_INT-OldIcfg.epf [2018-09-11 13:26:15,666 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 13:26:15,666 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 13:26:15,667 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 13:26:15,667 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 13:26:15,667 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 13:26:15,668 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 13:26:15,668 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 13:26:15,668 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 13:26:15,668 INFO L133 SettingsManager]: * Octagon Domain=false [2018-09-11 13:26:15,668 INFO L133 SettingsManager]: * Abstract domain=IntervalDomain [2018-09-11 13:26:15,669 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 13:26:15,669 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 13:26:15,670 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 13:26:15,670 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 13:26:15,670 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 13:26:15,670 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 13:26:15,670 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 13:26:15,671 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 13:26:15,671 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 13:26:15,671 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 13:26:15,671 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 13:26:15,671 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 13:26:15,672 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 13:26:15,673 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 13:26:15,673 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 13:26:15,673 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 13:26:15,673 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 13:26:15,673 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 13:26:15,674 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 13:26:15,674 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 13:26:15,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 13:26:15,674 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 13:26:15,674 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 13:26:15,674 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 13:26:15,747 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 13:26:15,764 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 13:26:15,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 13:26:15,774 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 13:26:15,774 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 13:26:15,775 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/sendmail-close-angle_true-unreach-call_true-termination.i [2018-09-11 13:26:16,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a4ed3d1f/dc3910f6d5414c87b71d09a44fad74fb/FLAGfd69d4761 [2018-09-11 13:26:16,368 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 13:26:16,369 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/sendmail-close-angle_true-unreach-call_true-termination.i [2018-09-11 13:26:16,377 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a4ed3d1f/dc3910f6d5414c87b71d09a44fad74fb/FLAGfd69d4761 [2018-09-11 13:26:16,394 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a4ed3d1f/dc3910f6d5414c87b71d09a44fad74fb [2018-09-11 13:26:16,405 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 13:26:16,408 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 13:26:16,410 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 13:26:16,410 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 13:26:16,419 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 13:26:16,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 01:26:16" (1/1) ... [2018-09-11 13:26:16,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21ef585a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16, skipping insertion in model container [2018-09-11 13:26:16,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 01:26:16" (1/1) ... [2018-09-11 13:26:16,602 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 13:26:16,642 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 13:26:16,660 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 13:26:16,668 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 13:26:16,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16 WrapperNode [2018-09-11 13:26:16,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 13:26:16,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 13:26:16,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 13:26:16,684 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 13:26:16,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16" (1/1) ... [2018-09-11 13:26:16,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16" (1/1) ... [2018-09-11 13:26:16,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 13:26:16,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 13:26:16,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 13:26:16,710 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 13:26:16,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16" (1/1) ... [2018-09-11 13:26:16,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16" (1/1) ... [2018-09-11 13:26:16,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16" (1/1) ... [2018-09-11 13:26:16,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16" (1/1) ... [2018-09-11 13:26:16,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16" (1/1) ... [2018-09-11 13:26:16,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16" (1/1) ... [2018-09-11 13:26:16,731 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16" (1/1) ... [2018-09-11 13:26:16,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 13:26:16,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 13:26:16,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 13:26:16,734 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 13:26:16,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16" (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 13:26:16,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 13:26:16,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 13:26:16,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 13:26:16,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 13:26:16,826 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 13:26:16,827 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 13:26:16,827 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 13:26:16,827 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 13:26:17,501 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 13:26:17,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 01:26:17 BoogieIcfgContainer [2018-09-11 13:26:17,503 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 13:26:17,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 13:26:17,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 13:26:17,507 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 13:26:17,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 01:26:16" (1/3) ... [2018-09-11 13:26:17,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba54aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 01:26:17, skipping insertion in model container [2018-09-11 13:26:17,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 01:26:16" (2/3) ... [2018-09-11 13:26:17,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba54aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 01:26:17, skipping insertion in model container [2018-09-11 13:26:17,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 01:26:17" (3/3) ... [2018-09-11 13:26:17,511 INFO L112 eAbstractionObserver]: Analyzing ICFG sendmail-close-angle_true-unreach-call_true-termination.i [2018-09-11 13:26:17,521 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 13:26:17,529 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 13:26:17,575 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 13:26:17,576 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 13:26:17,576 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 13:26:17,577 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 13:26:17,577 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 13:26:17,577 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 13:26:17,577 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 13:26:17,577 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 13:26:17,578 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 13:26:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2018-09-11 13:26:17,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-11 13:26:17,604 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 13:26:17,605 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 13:26:17,606 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 13:26:17,614 INFO L82 PathProgramCache]: Analyzing trace with hash 162908914, now seen corresponding path program 1 times [2018-09-11 13:26:17,618 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 13:26:17,619 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-11 13:26:17,621 INFO L202 CegarAbsIntRunner]: [0], [4], [7], [9], [15], [18], [24], [30], [34], [59], [70], [71], [72], [82] [2018-09-11 13:26:17,665 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2018-09-11 13:26:17,666 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown