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-acceleration/array_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-11 19:35:11,523 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-11 19:35:11,525 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-11 19:35:11,539 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-11 19:35:11,540 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-11 19:35:11,541 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-11 19:35:11,544 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-11 19:35:11,546 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-11 19:35:11,548 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-11 19:35:11,549 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-11 19:35:11,550 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-11 19:35:11,550 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-11 19:35:11,551 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-11 19:35:11,552 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-11 19:35:11,553 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-11 19:35:11,554 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-11 19:35:11,555 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-11 19:35:11,557 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-11 19:35:11,559 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-11 19:35:11,560 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-11 19:35:11,561 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-11 19:35:11,563 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-11 19:35:11,565 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-11 19:35:11,565 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-11 19:35:11,566 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-11 19:35:11,567 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-11 19:35:11,568 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-11 19:35:11,568 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-11 19:35:11,569 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-11 19:35:11,570 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-11 19:35:11,571 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-11 19:35:11,571 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-11 19:35:11,571 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-11 19:35:11,572 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-11 19:35:11,573 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-11 19:35:11,574 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-11 19:35:11,574 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 19:35:11,590 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-11 19:35:11,590 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-11 19:35:11,591 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-11 19:35:11,591 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-11 19:35:11,591 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-11 19:35:11,592 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-11 19:35:11,592 INFO L133 SettingsManager]: * Congruence Domain=false [2018-09-11 19:35:11,592 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-11 19:35:11,592 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2018-09-11 19:35:11,592 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-11 19:35:11,593 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-11 19:35:11,593 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-11 19:35:11,593 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-11 19:35:11,594 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-11 19:35:11,594 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-11 19:35:11,594 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-11 19:35:11,594 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-11 19:35:11,594 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-11 19:35:11,595 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-11 19:35:11,595 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-11 19:35:11,595 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-11 19:35:11,595 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-11 19:35:11,595 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-11 19:35:11,596 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-11 19:35:11,596 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-11 19:35:11,596 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-11 19:35:11,596 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-11 19:35:11,596 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-11 19:35:11,597 INFO L133 SettingsManager]: * Trace refinement strategy=TOOTHLESS_TAIPAN [2018-09-11 19:35:11,597 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-11 19:35:11,597 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-11 19:35:11,597 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-11 19:35:11,597 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-11 19:35:11,597 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-11 19:35:11,653 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-11 19:35:11,666 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-11 19:35:11,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-11 19:35:11,675 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-11 19:35:11,675 INFO L276 PluginConnector]: CDTParser initialized [2018-09-11 19:35:11,676 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i [2018-09-11 19:35:12,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/151680b45/9c0640b29ba04f52b255653d43988b99/FLAGa22ffb8c1 [2018-09-11 19:35:12,162 INFO L276 CDTParser]: Found 1 translation units. [2018-09-11 19:35:12,162 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i [2018-09-11 19:35:12,171 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/151680b45/9c0640b29ba04f52b255653d43988b99/FLAGa22ffb8c1 [2018-09-11 19:35:12,186 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/151680b45/9c0640b29ba04f52b255653d43988b99 [2018-09-11 19:35:12,198 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-11 19:35:12,202 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-11 19:35:12,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-11 19:35:12,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-11 19:35:12,210 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-11 19:35:12,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:35:12" (1/1) ... [2018-09-11 19:35:12,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e987693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12, skipping insertion in model container [2018-09-11 19:35:12,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 07:35:12" (1/1) ... [2018-09-11 19:35:12,411 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-11 19:35:12,455 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:35:12,471 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-11 19:35:12,475 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-11 19:35:12,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12 WrapperNode [2018-09-11 19:35:12,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-11 19:35:12,490 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-11 19:35:12,490 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-11 19:35:12,490 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-11 19:35:12,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12" (1/1) ... [2018-09-11 19:35:12,504 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12" (1/1) ... [2018-09-11 19:35:12,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-11 19:35:12,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-11 19:35:12,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-11 19:35:12,510 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-11 19:35:12,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12" (1/1) ... [2018-09-11 19:35:12,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12" (1/1) ... [2018-09-11 19:35:12,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12" (1/1) ... [2018-09-11 19:35:12,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12" (1/1) ... [2018-09-11 19:35:12,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12" (1/1) ... [2018-09-11 19:35:12,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12" (1/1) ... [2018-09-11 19:35:12,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12" (1/1) ... [2018-09-11 19:35:12,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-11 19:35:12,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-11 19:35:12,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-11 19:35:12,527 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-11 19:35:12,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12" (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 19:35:12,589 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_array_true_unreach_call__true_termination_i____VERIFIER_assert [2018-09-11 19:35:12,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_array_true_unreach_call__true_termination_i____VERIFIER_assert [2018-09-11 19:35:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-11 19:35:12,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-11 19:35:12,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-11 19:35:12,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-11 19:35:12,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-11 19:35:12,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-11 19:35:12,835 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-11 19:35:12,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:35:12 BoogieIcfgContainer [2018-09-11 19:35:12,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-11 19:35:12,837 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-11 19:35:12,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-11 19:35:12,841 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-11 19:35:12,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 07:35:12" (1/3) ... [2018-09-11 19:35:12,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67087ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:35:12, skipping insertion in model container [2018-09-11 19:35:12,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 07:35:12" (2/3) ... [2018-09-11 19:35:12,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67087ef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 07:35:12, skipping insertion in model container [2018-09-11 19:35:12,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 07:35:12" (3/3) ... [2018-09-11 19:35:12,844 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call1_true-termination.i [2018-09-11 19:35:12,853 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-11 19:35:12,860 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-11 19:35:12,902 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-11 19:35:12,902 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-11 19:35:12,903 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-11 19:35:12,903 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-11 19:35:12,903 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-11 19:35:12,903 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-11 19:35:12,903 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-11 19:35:12,903 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-11 19:35:12,904 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-11 19:35:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-11 19:35:12,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-11 19:35:12,925 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:35:12,926 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:35:12,927 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_array_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:35:12,933 INFO L82 PathProgramCache]: Analyzing trace with hash 47309880, now seen corresponding path program 1 times [2018-09-11 19:35:12,936 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:35:12,937 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 11 with the following transitions: [2018-09-11 19:35:12,939 INFO L202 CegarAbsIntRunner]: [0], [3], [5], [11], [15], [28], [32], [33], [34], [36] [2018-09-11 19:35:12,988 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:35:12,988 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:35:13,025 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:35:13,027 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-11 19:35:13,046 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:35:13,093 INFO L232 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 100% of their original sizes. [2018-09-11 19:35:13,093 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:35:13,095 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:35:13,098 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:35:13,098 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-11 19:35:13,098 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:35:13,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-11 19:35:13,120 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-11 19:35:13,121 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 19:35:13,126 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-09-11 19:35:13,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:35:13,156 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2018-09-11 19:35:13,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-11 19:35:13,158 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-11 19:35:13,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:35:13,168 INFO L225 Difference]: With dead ends: 30 [2018-09-11 19:35:13,169 INFO L226 Difference]: Without dead ends: 13 [2018-09-11 19:35:13,173 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-11 19:35:13,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-11 19:35:13,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-11 19:35:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-11 19:35:13,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-11 19:35:13,216 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-09-11 19:35:13,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:35:13,217 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-11 19:35:13,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-11 19:35:13,217 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-11 19:35:13,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-11 19:35:13,218 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:35:13,218 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:35:13,219 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_array_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:35:13,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1197084163, now seen corresponding path program 1 times [2018-09-11 19:35:13,219 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:35:13,220 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 12 with the following transitions: [2018-09-11 19:35:13,220 INFO L202 CegarAbsIntRunner]: [0], [3], [5], [11], [15], [19], [22], [32], [33], [34], [36] [2018-09-11 19:35:13,222 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:35:13,222 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2018-09-11 19:35:13,227 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-09-11 19:35:13,227 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Never found a fixpoint. Largest state had 2 variables. [2018-09-11 19:35:13,267 INFO L399 sIntCurrentIteration]: Generating AbsInt predicates [2018-09-11 19:35:13,278 INFO L224 lantSequenceWeakener]: Could never weaken! [2018-09-11 19:35:13,280 INFO L412 sIntCurrentIteration]: Unifying AI predicates [2018-09-11 19:35:13,306 INFO L423 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-09-11 19:35:13,307 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-11 19:35:13,307 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-11 19:35:13,307 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-11 19:35:13,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-11 19:35:13,309 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-11 19:35:13,309 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 19:35:13,309 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-09-11 19:35:13,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-11 19:35:13,351 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-11 19:35:13,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-11 19:35:13,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-11 19:35:13,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-11 19:35:13,353 INFO L225 Difference]: With dead ends: 21 [2018-09-11 19:35:13,353 INFO L226 Difference]: Without dead ends: 16 [2018-09-11 19:35:13,355 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-11 19:35:13,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-11 19:35:13,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-09-11 19:35:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-11 19:35:13,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-11 19:35:13,360 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-09-11 19:35:13,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-11 19:35:13,360 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-11 19:35:13,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-11 19:35:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-11 19:35:13,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-11 19:35:13,361 INFO L368 BasicCegarLoop]: Found error trace [2018-09-11 19:35:13,362 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-11 19:35:13,362 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_array_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-11 19:35:13,362 INFO L82 PathProgramCache]: Analyzing trace with hash 688816788, now seen corresponding path program 1 times [2018-09-11 19:35:13,362 INFO L69 tionRefinementEngine]: Using refinement strategy ToothlessTaipanRefinementStrategy [2018-09-11 19:35:13,363 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-09-11 19:35:13,363 INFO L202 CegarAbsIntRunner]: [0], [3], [5], [11], [15], [19], [22], [24], [26], [32], [33], [34], [36] [2018-09-11 19:35:13,365 INFO L148 AbstractInterpreter]: Using domain OctagonDomain [2018-09-11 19:35:13,365 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