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-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loops/sum_array_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 10:08:57,591 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 10:08:57,595 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 10:08:57,613 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 10:08:57,614 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 10:08:57,615 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 10:08:57,617 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 10:08:57,620 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 10:08:57,621 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 10:08:57,625 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 10:08:57,626 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 10:08:57,626 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 10:08:57,627 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 10:08:57,628 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 10:08:57,629 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 10:08:57,630 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 10:08:57,631 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 10:08:57,633 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 10:08:57,635 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 10:08:57,640 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 10:08:57,642 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 10:08:57,643 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 10:08:57,648 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 10:08:57,648 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 10:08:57,648 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 10:08:57,650 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 10:08:57,651 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 10:08:57,654 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 10:08:57,655 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 10:08:57,656 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 10:08:57,656 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 10:08:57,657 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-10 10:08:57,657 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-10 10:08:57,657 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-10 10:08:57,662 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-10 10:08:57,663 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-10 10:08:57,665 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-10 10:08:57,693 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 10:08:57,694 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 10:08:57,696 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 10:08:57,696 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 10:08:57,696 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 10:08:57,696 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 10:08:57,697 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 10:08:57,697 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 10:08:57,697 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 10:08:57,698 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 10:08:57,698 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 10:08:57,699 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 10:08:57,699 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 10:08:57,699 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 10:08:57,700 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 10:08:57,700 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 10:08:57,700 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 10:08:57,700 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 10:08:57,702 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 10:08:57,702 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 10:08:57,702 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 10:08:57,703 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 10:08:57,703 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 10:08:57,703 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:08:57,703 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 10:08:57,704 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 10:08:57,704 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 10:08:57,704 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 10:08:57,704 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 10:08:57,704 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 10:08:57,705 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 10:08:57,705 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 10:08:57,705 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 10:08:57,774 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 10:08:57,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 10:08:57,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 10:08:57,798 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 10:08:57,799 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 10:08:57,799 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array_true-unreach-call.i [2018-09-10 10:08:58,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/532d38132/3646b4d6cfe34e80a1fc6241bccb0776/FLAGed5467de6 [2018-09-10 10:08:58,319 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 10:08:58,319 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array_true-unreach-call.i [2018-09-10 10:08:58,325 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/532d38132/3646b4d6cfe34e80a1fc6241bccb0776/FLAGed5467de6 [2018-09-10 10:08:58,340 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/532d38132/3646b4d6cfe34e80a1fc6241bccb0776 [2018-09-10 10:08:58,351 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 10:08:58,354 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 10:08:58,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 10:08:58,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 10:08:58,364 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 10:08:58,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:08:58" (1/1) ... [2018-09-10 10:08:58,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e2299a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58, skipping insertion in model container [2018-09-10 10:08:58,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:08:58" (1/1) ... [2018-09-10 10:08:58,552 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 10:08:58,609 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:08:58,628 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 10:08:58,639 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:08:58,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58 WrapperNode [2018-09-10 10:08:58,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 10:08:58,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 10:08:58,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 10:08:58,659 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 10:08:58,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58" (1/1) ... [2018-09-10 10:08:58,678 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58" (1/1) ... [2018-09-10 10:08:58,686 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 10:08:58,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 10:08:58,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 10:08:58,686 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 10:08:58,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58" (1/1) ... [2018-09-10 10:08:58,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58" (1/1) ... [2018-09-10 10:08:58,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58" (1/1) ... [2018-09-10 10:08:58,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58" (1/1) ... [2018-09-10 10:08:58,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58" (1/1) ... [2018-09-10 10:08:58,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58" (1/1) ... [2018-09-10 10:08:58,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58" (1/1) ... [2018-09-10 10:08:58,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 10:08:58,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 10:08:58,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 10:08:58,725 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 10:08:58,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58" (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 [2018-09-10 10:08:58,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 10:08:58,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 10:08:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum_array_true_unreach_call_i____VERIFIER_assert [2018-09-10 10:08:58,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum_array_true_unreach_call_i____VERIFIER_assert [2018-09-10 10:08:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 10:08:58,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 10:08:58,801 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 10:08:58,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 10:08:59,327 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 10:08:59,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:08:59 BoogieIcfgContainer [2018-09-10 10:08:59,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 10:08:59,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 10:08:59,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 10:08:59,332 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 10:08:59,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:08:58" (1/3) ... [2018-09-10 10:08:59,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c013f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:08:59, skipping insertion in model container [2018-09-10 10:08:59,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:08:58" (2/3) ... [2018-09-10 10:08:59,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c013f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:08:59, skipping insertion in model container [2018-09-10 10:08:59,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:08:59" (3/3) ... [2018-09-10 10:08:59,335 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_array_true-unreach-call.i [2018-09-10 10:08:59,345 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 10:08:59,353 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 10:08:59,406 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 10:08:59,407 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 10:08:59,407 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 10:08:59,407 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 10:08:59,407 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 10:08:59,407 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 10:08:59,408 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 10:08:59,408 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 10:08:59,408 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 10:08:59,427 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-09-10 10:08:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-10 10:08:59,433 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:08:59,434 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:08:59,435 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum_array_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:08:59,441 INFO L82 PathProgramCache]: Analyzing trace with hash -426515113, now seen corresponding path program 1 times [2018-09-10 10:08:59,444 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:08:59,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:08:59,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:08:59,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:08:59,495 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:08:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:08:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:08:59,558 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:08:59,558 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-10 10:08:59,558 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:08:59,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-10 10:08:59,579 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-10 10:08:59,579 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-10 10:08:59,582 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2018-09-10 10:08:59,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:08:59,608 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2018-09-10 10:08:59,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-10 10:08:59,610 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-09-10 10:08:59,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:08:59,619 INFO L225 Difference]: With dead ends: 57 [2018-09-10 10:08:59,619 INFO L226 Difference]: Without dead ends: 29 [2018-09-10 10:08:59,623 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-10 10:08:59,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-09-10 10:08:59,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-09-10 10:08:59,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-09-10 10:08:59,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-09-10 10:08:59,662 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2018-09-10 10:08:59,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:08:59,662 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-09-10 10:08:59,662 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-10 10:08:59,663 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-09-10 10:08:59,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-10 10:08:59,664 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:08:59,664 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:08:59,665 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum_array_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:08:59,665 INFO L82 PathProgramCache]: Analyzing trace with hash -637687685, now seen corresponding path program 1 times [2018-09-10 10:08:59,666 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:08:59,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:08:59,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:08:59,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:08:59,670 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:08:59,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:08:59,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:08:59,918 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:08:59,918 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-10 10:08:59,918 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:08:59,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:08:59,921 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:08:59,921 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-09-10 10:08:59,921 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2018-09-10 10:09:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:09:00,310 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2018-09-10 10:09:00,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-10 10:09:00,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-09-10 10:09:00,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:09:00,315 INFO L225 Difference]: With dead ends: 72 [2018-09-10 10:09:00,315 INFO L226 Difference]: Without dead ends: 44 [2018-09-10 10:09:00,316 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-10 10:09:00,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-10 10:09:00,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 35. [2018-09-10 10:09:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-10 10:09:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-09-10 10:09:00,329 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 20 [2018-09-10 10:09:00,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:09:00,329 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-09-10 10:09:00,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:09:00,330 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-09-10 10:09:00,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-09-10 10:09:00,331 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:09:00,331 INFO L376 BasicCegarLoop]: trace histogram [2, 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] [2018-09-10 10:09:00,331 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum_array_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:09:00,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1479038986, now seen corresponding path program 1 times [2018-09-10 10:09:00,332 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:09:00,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:09:00,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:09:00,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:09:00,333 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:09:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:09:01,183 WARN L175 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2018-09-10 10:09:01,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-09-10 10:09:01,350 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:09:01,350 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:09:01,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:09:01,370 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:09:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:09:01,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:09:01,528 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-10 10:09:01,530 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-10 10:09:01,544 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-10 10:09:01,544 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:1 [2018-09-10 10:09:01,565 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-10 10:09:01,566 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-10 10:09:01,576 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-10 10:09:01,577 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:1 [2018-09-10 10:09:01,593 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2018-09-10 10:09:01,594 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-10 10:09:01,617 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-10 10:09:01,618 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:24 [2018-09-10 10:09:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:09:01,711 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:09:01,959 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2018-09-10 10:09:01,961 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-10 10:09:01,964 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-10 10:09:01,964 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:5 [2018-09-10 10:09:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 10:09:02,131 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:09:02,131 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:09:02,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:09:02,165 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:09:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:09:02,383 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:09:02,413 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-09-10 10:09:02,414 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-10 10:09:02,423 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-10 10:09:02,423 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:7 [2018-09-10 10:09:02,587 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-09-10 10:09:02,588 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-10 10:09:02,600 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-09-10 10:09:02,601 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:14 [2018-09-10 10:09:02,742 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-09-10 10:09:02,743 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-10 10:09:02,745 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-10 10:09:02,745 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-09-10 10:09:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:09:02,786 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:09:02,820 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2018-09-10 10:09:02,821 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-09-10 10:09:02,838 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-09-10 10:09:02,839 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:13 [2018-09-10 10:09:02,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 10:09:02,878 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:09:02,878 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7, 10, 7] total 16 [2018-09-10 10:09:02,878 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:09:02,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-10 10:09:02,879 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-10 10:09:02,879 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2018-09-10 10:09:02,880 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 8 states. [2018-09-10 10:09:03,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:09:03,120 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2018-09-10 10:09:03,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-10 10:09:03,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-09-10 10:09:03,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:09:03,123 INFO L225 Difference]: With dead ends: 50 [2018-09-10 10:09:03,123 INFO L226 Difference]: Without dead ends: 48 [2018-09-10 10:09:03,124 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 13 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2018-09-10 10:09:03,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-09-10 10:09:03,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2018-09-10 10:09:03,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-09-10 10:09:03,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2018-09-10 10:09:03,132 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 31 [2018-09-10 10:09:03,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:09:03,132 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2018-09-10 10:09:03,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-10 10:09:03,133 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2018-09-10 10:09:03,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-09-10 10:09:03,134 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:09:03,134 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:09:03,135 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum_array_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:09:03,135 INFO L82 PathProgramCache]: Analyzing trace with hash 941674799, now seen corresponding path program 1 times [2018-09-10 10:09:03,135 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:09:03,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:09:03,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:09:03,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:09:03,137 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:09:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:09:03,431 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 10:09:03,431 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:09:03,432 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-10 10:09:03,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:09:03,452 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:09:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:09:03,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:09:03,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 10:09:03,637 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:09:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 10:09:04,963 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:09:04,963 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-10 10:09:04,978 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:09:04,979 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:09:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:09:05,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:09:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 10:09:05,134 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:09:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-09-10 10:09:05,190 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:09:05,190 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 13 [2018-09-10 10:09:05,191 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:09:05,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-10 10:09:05,191 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-10 10:09:05,192 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-09-10 10:09:05,192 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 9 states. [2018-09-10 10:09:05,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:09:05,538 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2018-09-10 10:09:05,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:09:05,545 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2018-09-10 10:09:05,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:09:05,546 INFO L225 Difference]: With dead ends: 111 [2018-09-10 10:09:05,547 INFO L226 Difference]: Without dead ends: 63 [2018-09-10 10:09:05,550 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 142 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-09-10 10:09:05,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-09-10 10:09:05,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2018-09-10 10:09:05,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-09-10 10:09:05,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 56 transitions. [2018-09-10 10:09:05,562 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 56 transitions. Word has length 39 [2018-09-10 10:09:05,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:09:05,563 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 56 transitions. [2018-09-10 10:09:05,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-10 10:09:05,563 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 56 transitions. [2018-09-10 10:09:05,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-09-10 10:09:05,564 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:09:05,565 INFO L376 BasicCegarLoop]: trace histogram [3, 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] [2018-09-10 10:09:05,565 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loops_sum_array_true_unreach_call_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:09:05,565 INFO L82 PathProgramCache]: Analyzing trace with hash 258725888, now seen corresponding path program 2 times [2018-09-10 10:09:05,565 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:09:05,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:09:05,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:09:05,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:09:05,567 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:09:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-09-10 10:13:46,586 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$IntegerInterpolator.interpolate(Interpolator.java:1426) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$MixedLAInterpolator.convert(Interpolator.java:1282) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:125) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:121) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:73) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:239) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.mixedPivotLA(Interpolator.java:1472) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.combine(Interpolator.java:357) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$2(Interpolator.java:326) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$CombineInterpolants.walk(Interpolator.java:153) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:198) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:430) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:375) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:313) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-09-10 10:13:46,590 INFO L168 Benchmark]: Toolchain (without parser) took 288238.06 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-09-10 10:13:46,591 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-10 10:13:46,591 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.45 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. [2018-09-10 10:13:46,592 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.27 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. [2018-09-10 10:13:46,593 INFO L168 Benchmark]: Boogie Preprocessor took 37.63 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. [2018-09-10 10:13:46,593 INFO L168 Benchmark]: RCFGBuilder took 603.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -820.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-10 10:13:46,595 INFO L168 Benchmark]: TraceAbstraction took 287260.60 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -281.7 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-09-10 10:13:46,599 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 303.45 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 27.27 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. * Boogie Preprocessor took 37.63 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 603.46 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -820.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 287260.60 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -281.7 MB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$IntegerInterpolator.interpolate(Interpolator.java:1426) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/sum_array_true-unreach-call.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_10-13-46-614.csv Completed graceful shutdown