java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-ToothlessTaipan_OCT-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/terminator_02_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 19:30:14,625 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 19:30:14,628 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 19:30:14,640 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 19:30:14,641 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 19:30:14,645 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 19:30:14,647 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 19:30:14,649 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 19:30:14,652 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 19:30:14,658 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 19:30:14,659 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 19:30:14,659 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 19:30:14,660 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 19:30:14,662 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 19:30:14,664 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 19:30:14,667 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 19:30:14,668 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 19:30:14,671 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 19:30:14,676 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 19:30:14,680 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 19:30:14,682 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 19:30:14,684 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 19:30:14,690 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 19:30:14,690 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 19:30:14,691 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 19:30:14,692 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 19:30:14,693 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 19:30:14,694 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 19:30:14,695 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 19:30:14,696 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 19:30:14,696 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 19:30:14,697 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 19:30:14,697 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 19:30:14,697 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 19:30:14,700 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 19:30:14,702 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 19:30:14,702 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 19:30:14,726 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 19:30:14,727 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 19:30:14,728 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 19:30:14,728 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 19:30:14,728 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 19:30:14,731 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 19:30:14,731 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 19:30:14,732 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 19:30:14,732 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 19:30:14,732 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 19:30:14,732 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 19:30:14,733 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 19:30:14,734 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 19:30:14,734 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 19:30:14,734 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 19:30:14,735 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 19:30:14,735 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 19:30:14,735 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 19:30:14,735 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 19:30:14,737 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 19:30:14,737 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 19:30:14,737 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 19:30:14,738 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 19:30:14,738 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 19:30:14,738 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 19:30:14,738 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 19:30:14,739 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 19:30:14,739 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 19:30:14,739 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 19:30:14,739 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 19:30:14,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 19:30:14,740 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 19:30:14,740 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 19:30:14,740 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 19:30:14,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 19:30:14,820 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 19:30:14,828 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 19:30:14,830 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 19:30:14,831 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 19:30:14,832 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02_true-unreach-call_true-termination.i [2018-09-11 19:30:15,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a89810a/2f34af0a8dc94570ba009a2a6745ab9b/FLAGd440f27e9 [2018-09-11 19:30:15,366 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 19:30:15,367 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02_true-unreach-call_true-termination.i [2018-09-11 19:30:15,375 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a89810a/2f34af0a8dc94570ba009a2a6745ab9b/FLAGd440f27e9 [2018-09-11 19:30:15,390 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15a89810a/2f34af0a8dc94570ba009a2a6745ab9b [2018-09-11 19:30:15,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 19:30:15,404 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 19:30:15,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 19:30:15,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 19:30:15,415 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 19:30:15,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2240911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15, skipping insertion in model container [2018-09-11 19:30:15,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,580 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 19:30:15,621 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:30:15,639 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 19:30:15,652 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:30:15,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15 WrapperNode [2018-09-11 19:30:15,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 19:30:15,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 19:30:15,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 19:30:15,667 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 19:30:15,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 19:30:15,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 19:30:15,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 19:30:15,692 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 19:30:15,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (1/1) ... [2018-09-11 19:30:15,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 19:30:15,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 19:30:15,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 19:30:15,720 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 19:30:15,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (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 19:30:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 19:30:15,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 19:30:15,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 19:30:15,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 19:30:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 19:30:15,795 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 19:30:15,795 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_terminator____true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 19:30:15,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_terminator____true_unreach_call_true_termination_i____VERIFIER_assert [2018-09-11 19:30:16,234 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 19:30:16,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:30:16 BoogieIcfgContainer [2018-09-11 19:30:16,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 19:30:16,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 19:30:16,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 19:30:16,239 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 19:30:16,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:30:15" (1/3) ... [2018-09-11 19:30:16,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201db53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:30:16, skipping insertion in model container [2018-09-11 19:30:16,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:30:15" (2/3) ... [2018-09-11 19:30:16,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@201db53d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:30:16, skipping insertion in model container [2018-09-11 19:30:16,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:30:16" (3/3) ... [2018-09-11 19:30:16,243 INFO L112 eAbstractionObserver]: Analyzing ICFG terminator_02_true-unreach-call_true-termination.i [2018-09-11 19:30:16,254 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 19:30:16,263 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 19:30:16,352 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 19:30:16,353 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 19:30:16,353 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 19:30:16,354 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 19:30:16,354 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 19:30:16,354 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 19:30:16,355 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 19:30:16,355 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 19:30:16,355 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 19:30:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-09-11 19:30:16,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-11 19:30:16,388 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:30:16,390 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:30:16,391 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_terminator____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:30:16,399 INFO L82 PathProgramCache]: Analyzing trace with hash -60552007, now seen corresponding path program 1 times [2018-09-11 19:30:16,403 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:30:16,404 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-11 19:30:16,407 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [38], [43], [46], [48], [54], [55], [56], [58] [2018-09-11 19:30:16,470 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:30:16,471 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:30:16,532 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:30:16,534 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-11 19:30:16,553 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:30:16,618 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-11 19:30:16,619 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:30:16,838 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:30:16,839 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:30:16,840 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-11 19:30:16,840 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:30:16,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-11 19:30:16,851 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-11 19:30:16,852 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-11 19:30:16,854 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 7 states. [2018-09-11 19:30:17,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:30:17,215 INFO L93 Difference]: Finished difference Result 61 states and 84 transitions. [2018-09-11 19:30:17,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-11 19:30:17,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2018-09-11 19:30:17,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:30:17,226 INFO L225 Difference]: With dead ends: 61 [2018-09-11 19:30:17,227 INFO L226 Difference]: Without dead ends: 29 [2018-09-11 19:30:17,231 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-11 19:30:17,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-11 19:30:17,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2018-09-11 19:30:17,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-11 19:30:17,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-09-11 19:30:17,272 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14 [2018-09-11 19:30:17,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:30:17,273 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2018-09-11 19:30:17,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-11 19:30:17,273 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2018-09-11 19:30:17,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-11 19:30:17,274 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:30:17,274 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:30:17,275 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_terminator____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:30:17,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1989785303, now seen corresponding path program 1 times [2018-09-11 19:30:17,275 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:30:17,275 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-09-11 19:30:17,276 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [24], [28], [43], [46], [48], [54], [55], [56], [58] [2018-09-11 19:30:17,281 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:30:17,281 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:30:17,295 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:30:17,295 INFO L272 AbstractInterpreter]: Visited 14 different actions 14 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-09-11 19:30:17,330 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:30:17,369 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-09-11 19:30:17,370 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:30:17,797 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:30:17,797 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:30:17,798 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-09-11 19:30:17,798 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:30:17,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-11 19:30:17,799 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-11 19:30:17,799 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-09-11 19:30:17,800 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 10 states. [2018-09-11 19:30:17,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:30:17,991 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2018-09-11 19:30:17,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-11 19:30:17,992 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2018-09-11 19:30:17,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:30:17,993 INFO L225 Difference]: With dead ends: 33 [2018-09-11 19:30:17,993 INFO L226 Difference]: Without dead ends: 28 [2018-09-11 19:30:17,995 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-09-11 19:30:17,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-09-11 19:30:18,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 19. [2018-09-11 19:30:18,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-11 19:30:18,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-09-11 19:30:18,002 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2018-09-11 19:30:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:30:18,003 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2018-09-11 19:30:18,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-11 19:30:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2018-09-11 19:30:18,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-11 19:30:18,004 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:30:18,004 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:30:18,005 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_terminator____true_unreach_call_true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:30:18,005 INFO L82 PathProgramCache]: Analyzing trace with hash 767970866, now seen corresponding path program 1 times [2018-09-11 19:30:18,005 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:30:18,005 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-09-11 19:30:18,006 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [20], [24], [28], [30], [33], [43], [46], [48], [54], [55], [56], [58] [2018-09-11 19:30:18,008 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:30:18,008 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown