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/loop-acceleration/const_true-unreach-call1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ddc4263 [2018-08-07 10:46:02,664 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-08-07 10:46:02,666 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-08-07 10:46:02,678 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-08-07 10:46:02,679 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-08-07 10:46:02,680 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-08-07 10:46:02,681 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-08-07 10:46:02,683 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-08-07 10:46:02,684 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-08-07 10:46:02,685 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-08-07 10:46:02,686 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-08-07 10:46:02,686 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-08-07 10:46:02,687 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-08-07 10:46:02,688 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-08-07 10:46:02,689 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-08-07 10:46:02,690 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-08-07 10:46:02,691 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-08-07 10:46:02,693 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-08-07 10:46:02,695 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-08-07 10:46:02,696 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-08-07 10:46:02,698 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-08-07 10:46:02,699 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-08-07 10:46:02,702 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-08-07 10:46:02,702 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-08-07 10:46:02,702 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-08-07 10:46:02,703 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-08-07 10:46:02,704 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-08-07 10:46:02,705 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-08-07 10:46:02,706 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-08-07 10:46:02,707 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-08-07 10:46:02,707 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-08-07 10:46:02,708 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-08-07 10:46:02,713 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 [2018-08-07 10:46:02,739 INFO L110 SettingsManager]: Loading preferences was successful [2018-08-07 10:46:02,739 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-08-07 10:46:02,741 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-08-07 10:46:02,741 INFO L133 SettingsManager]: * User list type=DISABLED [2018-08-07 10:46:02,741 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-08-07 10:46:02,742 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-08-07 10:46:02,742 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-08-07 10:46:02,742 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-08-07 10:46:02,742 INFO L133 SettingsManager]: * Log string format=TERM [2018-08-07 10:46:02,742 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-08-07 10:46:02,743 INFO L133 SettingsManager]: * Interval Domain=false [2018-08-07 10:46:02,743 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-08-07 10:46:02,744 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-08-07 10:46:02,744 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-08-07 10:46:02,744 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-08-07 10:46:02,744 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-08-07 10:46:02,744 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-08-07 10:46:02,745 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-08-07 10:46:02,745 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-08-07 10:46:02,745 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-08-07 10:46:02,745 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-08-07 10:46:02,746 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-08-07 10:46:02,746 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-08-07 10:46:02,746 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-08-07 10:46:02,746 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-08-07 10:46:02,746 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-08-07 10:46:02,747 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-08-07 10:46:02,747 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-08-07 10:46:02,747 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-08-07 10:46:02,747 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-08-07 10:46:02,747 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-08-07 10:46:02,748 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-08-07 10:46:02,748 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-08-07 10:46:02,797 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-08-07 10:46:02,810 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-08-07 10:46:02,814 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-08-07 10:46:02,816 INFO L271 PluginConnector]: Initializing CDTParser... [2018-08-07 10:46:02,816 INFO L276 PluginConnector]: CDTParser initialized [2018-08-07 10:46:02,817 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/const_true-unreach-call1.i [2018-08-07 10:46:03,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2894e200c/cd1f528d05674870b88a077c58c82c97/FLAGba72cc801 [2018-08-07 10:46:03,325 INFO L276 CDTParser]: Found 1 translation units. [2018-08-07 10:46:03,325 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/const_true-unreach-call1.i [2018-08-07 10:46:03,331 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2894e200c/cd1f528d05674870b88a077c58c82c97/FLAGba72cc801 [2018-08-07 10:46:03,346 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2894e200c/cd1f528d05674870b88a077c58c82c97 [2018-08-07 10:46:03,361 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-08-07 10:46:03,363 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-08-07 10:46:03,364 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-08-07 10:46:03,364 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-08-07 10:46:03,373 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-08-07 10:46:03,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 10:46:03" (1/1) ... [2018-08-07 10:46:03,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@992cac4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03, skipping insertion in model container [2018-08-07 10:46:03,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.08 10:46:03" (1/1) ... [2018-08-07 10:46:03,584 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-08-07 10:46:03,631 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 10:46:03,651 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-08-07 10:46:03,656 INFO L175 PostProcessor]: Settings: Checked method=main [2018-08-07 10:46:03,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03 WrapperNode [2018-08-07 10:46:03,673 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-08-07 10:46:03,674 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-08-07 10:46:03,674 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-08-07 10:46:03,674 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-08-07 10:46:03,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03" (1/1) ... [2018-08-07 10:46:03,692 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03" (1/1) ... [2018-08-07 10:46:03,698 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-08-07 10:46:03,699 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-08-07 10:46:03,699 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-08-07 10:46:03,700 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-08-07 10:46:03,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03" (1/1) ... [2018-08-07 10:46:03,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03" (1/1) ... [2018-08-07 10:46:03,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03" (1/1) ... [2018-08-07 10:46:03,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03" (1/1) ... [2018-08-07 10:46:03,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03" (1/1) ... [2018-08-07 10:46:03,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03" (1/1) ... [2018-08-07 10:46:03,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03" (1/1) ... [2018-08-07 10:46:03,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-08-07 10:46:03,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-08-07 10:46:03,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-08-07 10:46:03,722 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-08-07 10:46:03,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03" (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 [2018-08-07 10:46:03,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-08-07 10:46:03,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-08-07 10:46:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_const_true_unreach_call__i____VERIFIER_assert [2018-08-07 10:46:03,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_const_true_unreach_call__i____VERIFIER_assert [2018-08-07 10:46:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-08-07 10:46:03,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-08-07 10:46:03,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-08-07 10:46:03,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-08-07 10:46:04,028 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-08-07 10:46:04,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 10:46:04 BoogieIcfgContainer [2018-08-07 10:46:04,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-08-07 10:46:04,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-08-07 10:46:04,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-08-07 10:46:04,033 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-08-07 10:46:04,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.08 10:46:03" (1/3) ... [2018-08-07 10:46:04,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150e81f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 10:46:04, skipping insertion in model container [2018-08-07 10:46:04,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.08 10:46:03" (2/3) ... [2018-08-07 10:46:04,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@150e81f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 10:46:04, skipping insertion in model container [2018-08-07 10:46:04,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 10:46:04" (3/3) ... [2018-08-07 10:46:04,037 INFO L112 eAbstractionObserver]: Analyzing ICFG const_true-unreach-call1.i [2018-08-07 10:46:04,047 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-08-07 10:46:04,055 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-08-07 10:46:04,107 INFO L129 ementStrategyFactory]: Using default assertion order modulation [2018-08-07 10:46:04,107 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-08-07 10:46:04,108 INFO L382 AbstractCegarLoop]: Hoare is true [2018-08-07 10:46:04,108 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-08-07 10:46:04,108 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-08-07 10:46:04,108 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-08-07 10:46:04,108 INFO L386 AbstractCegarLoop]: Difference is false [2018-08-07 10:46:04,108 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-08-07 10:46:04,109 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-08-07 10:46:04,128 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-08-07 10:46:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-08-07 10:46:04,134 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 10:46:04,135 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 10:46:04,136 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_const_true_unreach_call__i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 10:46:04,142 INFO L82 PathProgramCache]: Analyzing trace with hash 314686959, now seen corresponding path program 1 times [2018-08-07 10:46:04,145 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 10:46:04,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:46:04,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:46:04,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:46:04,200 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 10:46:04,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:46:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:46:04,264 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 10:46:04,265 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-08-07 10:46:04,265 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 10:46:04,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-08-07 10:46:04,286 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-08-07 10:46:04,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-08-07 10:46:04,289 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-08-07 10:46:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 10:46:04,315 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-08-07 10:46:04,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-08-07 10:46:04,318 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-08-07 10:46:04,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 10:46:04,329 INFO L225 Difference]: With dead ends: 29 [2018-08-07 10:46:04,329 INFO L226 Difference]: Without dead ends: 12 [2018-08-07 10:46:04,339 INFO L603 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 [2018-08-07 10:46:04,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-08-07 10:46:04,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-08-07 10:46:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-08-07 10:46:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-08-07 10:46:04,384 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-08-07 10:46:04,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 10:46:04,385 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-08-07 10:46:04,385 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-08-07 10:46:04,385 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-08-07 10:46:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-08-07 10:46:04,386 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 10:46:04,386 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 10:46:04,386 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_const_true_unreach_call__i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 10:46:04,387 INFO L82 PathProgramCache]: Analyzing trace with hash 926255632, now seen corresponding path program 1 times [2018-08-07 10:46:04,387 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 10:46:04,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:46:04,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:46:04,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:46:04,389 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 10:46:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:46:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:46:04,519 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-08-07 10:46:04,519 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-08-07 10:46:04,519 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 10:46:04,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-08-07 10:46:04,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-08-07 10:46:04,522 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 10:46:04,522 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-08-07 10:46:04,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 10:46:04,572 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-08-07 10:46:04,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-08-07 10:46:04,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-08-07 10:46:04,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 10:46:04,574 INFO L225 Difference]: With dead ends: 19 [2018-08-07 10:46:04,574 INFO L226 Difference]: Without dead ends: 14 [2018-08-07 10:46:04,575 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-08-07 10:46:04,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-08-07 10:46:04,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-08-07 10:46:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-08-07 10:46:04,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-08-07 10:46:04,580 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-08-07 10:46:04,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 10:46:04,581 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-08-07 10:46:04,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-08-07 10:46:04,581 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-08-07 10:46:04,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-08-07 10:46:04,582 INFO L368 BasicCegarLoop]: Found error trace [2018-08-07 10:46:04,582 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-08-07 10:46:04,583 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_const_true_unreach_call__i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-08-07 10:46:04,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1883357962, now seen corresponding path program 1 times [2018-08-07 10:46:04,583 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-08-07 10:46:04,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:46:04,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:46:04,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-08-07 10:46:04,585 INFO L292 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-08-07 10:46:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:46:04,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:46:04,741 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:46:04,742 INFO L194 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 [2018-08-07 10:46:04,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:46:04,761 INFO L292 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 10:46:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:46:04,800 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:46:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:46:04,841 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:46:04,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:46:04,970 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-08-07 10:46:04,970 INFO L194 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 [2018-08-07 10:46:04,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-08-07 10:46:04,988 INFO L292 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-08-07 10:46:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-08-07 10:46:05,007 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-08-07 10:46:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:46:05,157 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-08-07 10:46:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-08-07 10:46:05,513 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-08-07 10:46:05,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [4, 4, 4] total 12 [2018-08-07 10:46:05,513 INFO L262 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-08-07 10:46:05,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-08-07 10:46:05,514 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-08-07 10:46:05,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-08-07 10:46:05,515 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-08-07 10:46:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-08-07 10:46:05,553 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-08-07 10:46:05,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-08-07 10:46:05,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-08-07 10:46:05,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-08-07 10:46:05,555 INFO L225 Difference]: With dead ends: 14 [2018-08-07 10:46:05,555 INFO L226 Difference]: Without dead ends: 0 [2018-08-07 10:46:05,556 INFO L603 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-08-07 10:46:05,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-08-07 10:46:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-08-07 10:46:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-08-07 10:46:05,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-08-07 10:46:05,557 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-08-07 10:46:05,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-08-07 10:46:05,558 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-08-07 10:46:05,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-08-07 10:46:05,558 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-08-07 10:46:05,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-08-07 10:46:05,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-08-07 10:46:05,605 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-08-07 10:46:05,605 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-08-07 10:46:05,606 INFO L422 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-08-07 10:46:05,606 INFO L422 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_const_true_unreach_call__i____VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-08-07 10:46:05,606 INFO L425 ceAbstractionStarter]: At program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_const_true_unreach_call__i____VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-08-07 10:46:05,606 INFO L422 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_const_true_unreach_call__i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-08-07 10:46:05,606 INFO L422 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-08-07 10:46:05,606 INFO L422 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-08-07 10:46:05,607 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-08-07 10:46:05,607 INFO L425 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-08-07 10:46:05,607 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-08-07 10:46:05,607 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-08-07 10:46:05,607 INFO L425 ceAbstractionStarter]: At program point mainENTRY(lines 8 16) the Hoare annotation is: true [2018-08-07 10:46:05,607 INFO L422 ceAbstractionStarter]: For program point mainEXIT(lines 8 16) no Hoare annotation was computed. [2018-08-07 10:46:05,607 INFO L422 ceAbstractionStarter]: For program point mainFINAL(lines 8 16) no Hoare annotation was computed. [2018-08-07 10:46:05,608 INFO L422 ceAbstractionStarter]: For program point L11-1(lines 11 14) no Hoare annotation was computed. [2018-08-07 10:46:05,608 INFO L418 ceAbstractionStarter]: At program point L11-3(lines 11 14) the Hoare annotation is: (or (= main_~x~0 0) (and (<= 0 main_~y~0) (<= main_~y~0 0))) [2018-08-07 10:46:05,608 INFO L418 ceAbstractionStarter]: At program point L11-4(lines 11 14) the Hoare annotation is: (= main_~x~0 0) [2018-08-07 10:46:05,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 10:46:05 BoogieIcfgContainer [2018-08-07 10:46:05,619 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-08-07 10:46:05,620 INFO L168 Benchmark]: Toolchain (without parser) took 2259.17 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -705.8 MB). Peak memory consumption was 37.7 MB. Max. memory is 7.1 GB. [2018-08-07 10:46:05,622 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. [2018-08-07 10:46:05,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.41 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. [2018-08-07 10:46:05,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.84 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. [2018-08-07 10:46:05,625 INFO L168 Benchmark]: Boogie Preprocessor took 21.96 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. [2018-08-07 10:46:05,625 INFO L168 Benchmark]: RCFGBuilder took 307.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-08-07 10:46:05,627 INFO L168 Benchmark]: TraceAbstraction took 1590.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 77.6 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. [2018-08-07 10:46:05,632 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 309.41 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 24.84 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 21.96 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 307.21 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 743.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -794.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1590.19 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 77.6 MB). Peak memory consumption was 77.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: x == 0 || (0 <= y && y <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 1 SDslu, 36 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 19 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 2173 SizeOfPredicates, 3 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 4/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/const_true-unreach-call1.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-08-07_10-46-05-647.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/const_true-unreach-call1.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-08-07_10-46-05-647.csv Received shutdown request...