java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 16:11:56,852 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 16:11:56,854 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 16:11:56,868 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 16:11:56,868 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 16:11:56,870 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 16:11:56,871 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 16:11:56,874 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 16:11:56,876 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 16:11:56,878 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 16:11:56,879 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 16:11:56,879 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 16:11:56,882 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 16:11:56,885 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 16:11:56,891 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 16:11:56,892 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 16:11:56,894 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 16:11:56,896 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 16:11:56,902 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 16:11:56,905 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 16:11:56,906 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 16:11:56,908 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 16:11:56,912 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 16:11:56,912 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 16:11:56,912 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 16:11:56,913 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 16:11:56,914 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 16:11:56,915 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 16:11:56,915 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 16:11:56,917 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 16:11:56,917 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 16:11:56,918 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 16:11:56,921 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 16:11:56,943 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 16:11:56,943 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 16:11:56,944 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 16:11:56,944 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 16:11:56,944 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 16:11:56,944 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 16:11:56,945 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 16:11:56,945 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 16:11:56,945 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 16:11:56,945 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 16:11:56,945 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 16:11:56,946 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 16:11:56,946 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 16:11:56,946 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 16:11:56,947 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 16:11:56,947 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 16:11:56,947 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 16:11:56,947 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 16:11:56,947 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 16:11:56,948 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 16:11:56,948 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 16:11:56,948 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 16:11:56,948 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 16:11:56,948 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 16:11:56,949 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 16:11:56,949 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 16:11:56,949 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 16:11:56,949 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 16:11:56,949 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 16:11:56,950 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 16:11:56,950 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 16:11:56,950 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 16:11:56,950 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 16:11:56,950 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 16:11:57,000 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 16:11:57,016 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 16:11:57,020 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 16:11:57,021 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 16:11:57,022 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 16:11:57,022 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008_true-unreach-call_true-termination.c.i [2018-10-23 16:11:57,087 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/449ed9174/c326f607e9f240a89e4aef5ef8a29449/FLAGd1052a3b4 [2018-10-23 16:11:57,502 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 16:11:57,502 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008_true-unreach-call_true-termination.c.i [2018-10-23 16:11:57,509 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/449ed9174/c326f607e9f240a89e4aef5ef8a29449/FLAGd1052a3b4 [2018-10-23 16:11:57,524 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/449ed9174/c326f607e9f240a89e4aef5ef8a29449 [2018-10-23 16:11:57,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 16:11:57,538 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 16:11:57,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 16:11:57,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 16:11:57,542 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 16:11:57,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 04:11:57" (1/1) ... [2018-10-23 16:11:57,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325d2746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57, skipping insertion in model container [2018-10-23 16:11:57,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 04:11:57" (1/1) ... [2018-10-23 16:11:57,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 16:11:57,588 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 16:11:57,816 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 16:11:57,820 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 16:11:57,841 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 16:11:57,858 INFO L193 MainTranslator]: Completed translation [2018-10-23 16:11:57,859 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57 WrapperNode [2018-10-23 16:11:57,859 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 16:11:57,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 16:11:57,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 16:11:57,860 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 16:11:57,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57" (1/1) ... [2018-10-23 16:11:57,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57" (1/1) ... [2018-10-23 16:11:57,886 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 16:11:57,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 16:11:57,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 16:11:57,887 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 16:11:57,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57" (1/1) ... [2018-10-23 16:11:57,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57" (1/1) ... [2018-10-23 16:11:57,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57" (1/1) ... [2018-10-23 16:11:57,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57" (1/1) ... [2018-10-23 16:11:57,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57" (1/1) ... [2018-10-23 16:11:57,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57" (1/1) ... [2018-10-23 16:11:57,908 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57" (1/1) ... [2018-10-23 16:11:57,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 16:11:57,910 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 16:11:57,910 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 16:11:57,911 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 16:11:57,911 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 16:11:57,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 16:11:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 16:11:57,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 16:11:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 16:11:57,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 16:11:57,973 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 16:11:57,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-23 16:11:57,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-23 16:11:58,255 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 16:11:58,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 04:11:58 BoogieIcfgContainer [2018-10-23 16:11:58,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 16:11:58,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 16:11:58,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 16:11:58,271 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 16:11:58,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 04:11:57" (1/3) ... [2018-10-23 16:11:58,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@802bd37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 04:11:58, skipping insertion in model container [2018-10-23 16:11:58,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 04:11:57" (2/3) ... [2018-10-23 16:11:58,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@802bd37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 04:11:58, skipping insertion in model container [2018-10-23 16:11:58,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 04:11:58" (3/3) ... [2018-10-23 16:11:58,277 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008_true-unreach-call_true-termination.c.i [2018-10-23 16:11:58,297 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 16:11:58,309 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 16:11:58,335 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 16:11:58,375 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 16:11:58,375 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 16:11:58,376 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 16:11:58,376 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 16:11:58,376 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 16:11:58,376 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 16:11:58,376 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 16:11:58,377 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 16:11:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-10-23 16:11:58,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-10-23 16:11:58,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 16:11:58,404 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 16:11:58,406 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 16:11:58,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 16:11:58,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1281911547, now seen corresponding path program 1 times [2018-10-23 16:11:58,417 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 16:11:58,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 16:11:58,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 16:11:58,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 16:11:58,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 16:11:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 16:11:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 16:11:58,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 16:11:58,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 16:11:58,550 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 16:11:58,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-23 16:11:58,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-23 16:11:58,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-23 16:11:58,569 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-10-23 16:11:58,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 16:11:58,590 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-10-23 16:11:58,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 16:11:58,592 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2018-10-23 16:11:58,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 16:11:58,600 INFO L225 Difference]: With dead ends: 32 [2018-10-23 16:11:58,601 INFO L226 Difference]: Without dead ends: 13 [2018-10-23 16:11:58,604 INFO L605 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 [2018-10-23 16:11:58,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-23 16:11:58,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-23 16:11:58,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-23 16:11:58,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-10-23 16:11:58,645 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-10-23 16:11:58,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 16:11:58,645 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-10-23 16:11:58,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-23 16:11:58,648 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-10-23 16:11:58,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-23 16:11:58,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 16:11:58,649 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 16:11:58,650 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 16:11:58,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 16:11:58,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1335306055, now seen corresponding path program 1 times [2018-10-23 16:11:58,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 16:11:58,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 16:11:58,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 16:11:58,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 16:11:58,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 16:11:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 16:11:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 16:11:58,737 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 16:11:58,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 16:11:58,737 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 16:11:58,739 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 16:11:58,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 16:11:58,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 16:11:58,740 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-10-23 16:11:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 16:11:58,757 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-10-23 16:11:58,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 16:11:58,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2018-10-23 16:11:58,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 16:11:58,758 INFO L225 Difference]: With dead ends: 20 [2018-10-23 16:11:58,758 INFO L226 Difference]: Without dead ends: 15 [2018-10-23 16:11:58,759 INFO L605 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 [2018-10-23 16:11:58,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-23 16:11:58,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-23 16:11:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-23 16:11:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-10-23 16:11:58,764 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-10-23 16:11:58,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 16:11:58,765 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-10-23 16:11:58,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 16:11:58,765 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-10-23 16:11:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-23 16:11:58,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 16:11:58,766 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 16:11:58,766 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 16:11:58,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 16:11:58,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1931535679, now seen corresponding path program 1 times [2018-10-23 16:11:58,767 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 16:11:58,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 16:11:58,768 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 16:11:58,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 16:11:58,769 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 16:11:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 16:11:58,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 16:11:58,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 16:11:58,976 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 16:11:58,977 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 15 with the following transitions: [2018-10-23 16:11:58,979 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [16], [18], [25], [28], [30], [36], [37], [38], [40] [2018-10-23 16:11:59,035 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 16:11:59,035 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 16:11:59,340 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-23 16:11:59,341 INFO L272 AbstractInterpreter]: Visited 13 different actions 79 times. Merged at 3 different actions 29 times. Widened at 1 different actions 6 times. Found 1 fixpoints after 1 different actions. Largest state had 4 variables. [2018-10-23 16:11:59,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 16:11:59,359 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-23 16:11:59,360 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 16:11:59,360 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 16:11:59,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 16:11:59,379 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 16:11:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 16:11:59,412 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 16:11:59,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 16:11:59,570 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 16:11:59,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 16:11:59,989 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-23 16:11:59,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 13 [2018-10-23 16:11:59,989 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 16:11:59,990 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 16:11:59,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 16:11:59,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-10-23 16:11:59,991 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2018-10-23 16:12:00,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 16:12:00,112 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-10-23 16:12:00,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 16:12:00,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2018-10-23 16:12:00,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 16:12:00,113 INFO L225 Difference]: With dead ends: 15 [2018-10-23 16:12:00,113 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 16:12:00,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2018-10-23 16:12:00,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 16:12:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 16:12:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 16:12:00,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 16:12:00,116 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-10-23 16:12:00,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 16:12:00,117 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 16:12:00,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 16:12:00,117 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 16:12:00,117 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 16:12:00,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 16:12:00,182 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-23 16:12:00,182 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-23 16:12:00,182 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-23 16:12:00,182 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-23 16:12:00,182 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-23 16:12:00,182 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-23 16:12:00,183 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 21) the Hoare annotation is: true [2018-10-23 16:12:00,183 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 21) no Hoare annotation was computed. [2018-10-23 16:12:00,183 INFO L425 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-10-23 16:12:00,183 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-10-23 16:12:00,183 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2018-10-23 16:12:00,183 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 21) no Hoare annotation was computed. [2018-10-23 16:12:00,183 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 18) the Hoare annotation is: (or (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 2) main_~y~0)) [2018-10-23 16:12:00,184 INFO L421 ceAbstractionStarter]: At program point L15-4(lines 15 18) the Hoare annotation is: (and (<= (+ main_~x~0 2) main_~y~0) (<= 2 main_~y~0)) [2018-10-23 16:12:00,184 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-23 16:12:00,184 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-23 16:12:00,184 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-23 16:12:00,184 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-23 16:12:00,184 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-23 16:12:00,184 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-23 16:12:00,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 04:12:00 BoogieIcfgContainer [2018-10-23 16:12:00,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 16:12:00,196 INFO L168 Benchmark]: Toolchain (without parser) took 2659.38 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -669.0 MB). Peak memory consumption was 49.8 MB. Max. memory is 7.1 GB. [2018-10-23 16:12:00,198 INFO L168 Benchmark]: CDTParser took 0.20 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. [2018-10-23 16:12:00,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 320.74 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. [2018-10-23 16:12:00,200 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.72 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. [2018-10-23 16:12:00,201 INFO L168 Benchmark]: Boogie Preprocessor took 23.07 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. [2018-10-23 16:12:00,201 INFO L168 Benchmark]: RCFGBuilder took 345.81 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -768.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-10-23 16:12:00,203 INFO L168 Benchmark]: TraceAbstraction took 1931.72 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 88.6 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. [2018-10-23 16:12:00,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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. * CACSL2BoogieTranslator took 320.74 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 26.72 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 23.07 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 345.81 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 718.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -768.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1931.72 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 88.6 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 15]: Loop Invariant Derived loop invariant: x + 50 <= 0 || x + 2 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 2 SDslu, 41 SDs, 0 SdLazy, 18 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 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, 25 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 1640 SizeOfPredicates, 5 NumberOfNonLiveVariables, 35 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 4/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...