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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call3_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 10:32:07,835 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 10:32:07,837 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 10:32:07,852 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 10:32:07,852 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 10:32:07,856 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 10:32:07,857 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 10:32:07,859 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 10:32:07,862 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 10:32:07,862 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 10:32:07,865 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 10:32:07,866 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 10:32:07,867 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 10:32:07,868 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 10:32:07,870 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 10:32:07,871 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 10:32:07,872 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 10:32:07,873 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 10:32:07,879 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 10:32:07,880 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 10:32:07,882 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 10:32:07,883 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 10:32:07,886 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 10:32:07,886 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 10:32:07,887 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 10:32:07,890 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 10:32:07,891 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 10:32:07,892 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 10:32:07,896 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 10:32:07,897 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 10:32:07,897 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 10:32:07,900 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 10:32:07,900 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 10:32:07,900 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 10:32:07,903 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 10:32:07,904 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 10:32:07,905 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 10:32:07,933 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 10:32:07,933 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 10:32:07,934 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 10:32:07,934 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 10:32:07,935 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 10:32:07,935 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 10:32:07,935 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 10:32:07,935 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 10:32:07,935 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 10:32:07,936 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 10:32:07,936 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 10:32:07,937 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 10:32:07,937 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 10:32:07,937 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 10:32:07,938 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 10:32:07,938 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 10:32:07,938 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 10:32:07,938 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 10:32:07,938 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 10:32:07,939 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 10:32:07,939 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 10:32:07,939 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 10:32:07,939 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 10:32:07,939 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 10:32:07,940 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 10:32:07,940 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 10:32:07,940 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 10:32:07,940 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 10:32:07,940 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 10:32:07,943 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 10:32:07,943 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 10:32:07,943 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 10:32:07,943 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 10:32:07,943 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 10:32:07,944 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 10:32:07,944 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 10:32:08,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 10:32:08,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 10:32:08,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 10:32:08,031 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 10:32:08,032 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 10:32:08,032 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-11-07 10:32:08,089 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcf49684/0af11fd4e031438381c85273cb79c1a6/FLAG5850d49b7 [2018-11-07 10:32:08,581 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 10:32:08,582 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call3_true-termination.i [2018-11-07 10:32:08,587 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcf49684/0af11fd4e031438381c85273cb79c1a6/FLAG5850d49b7 [2018-11-07 10:32:08,603 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fcf49684/0af11fd4e031438381c85273cb79c1a6 [2018-11-07 10:32:08,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 10:32:08,615 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 10:32:08,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 10:32:08,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 10:32:08,619 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 10:32:08,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:32:08" (1/1) ... [2018-11-07 10:32:08,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@189f4f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08, skipping insertion in model container [2018-11-07 10:32:08,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:32:08" (1/1) ... [2018-11-07 10:32:08,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 10:32:08,652 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 10:32:08,878 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:32:08,883 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 10:32:08,909 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:32:08,938 INFO L193 MainTranslator]: Completed translation [2018-11-07 10:32:08,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08 WrapperNode [2018-11-07 10:32:08,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 10:32:08,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 10:32:08,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 10:32:08,940 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 10:32:08,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08" (1/1) ... [2018-11-07 10:32:08,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08" (1/1) ... [2018-11-07 10:32:08,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 10:32:08,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 10:32:08,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 10:32:08,972 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 10:32:08,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08" (1/1) ... [2018-11-07 10:32:08,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08" (1/1) ... [2018-11-07 10:32:08,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08" (1/1) ... [2018-11-07 10:32:08,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08" (1/1) ... [2018-11-07 10:32:08,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08" (1/1) ... [2018-11-07 10:32:09,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08" (1/1) ... [2018-11-07 10:32:09,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08" (1/1) ... [2018-11-07 10:32:09,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 10:32:09,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 10:32:09,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 10:32:09,015 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 10:32:09,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08" (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 [2018-11-07 10:32:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-07 10:32:09,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 10:32:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 10:32:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-07 10:32:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 10:32:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 10:32:09,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 10:32:09,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 10:32:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-07 10:32:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 10:32:09,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 10:32:09,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-07 10:32:09,585 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 10:32:09,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:32:09 BoogieIcfgContainer [2018-11-07 10:32:09,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 10:32:09,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 10:32:09,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 10:32:09,590 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 10:32:09,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:32:08" (1/3) ... [2018-11-07 10:32:09,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fd7228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:32:09, skipping insertion in model container [2018-11-07 10:32:09,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:32:08" (2/3) ... [2018-11-07 10:32:09,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fd7228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:32:09, skipping insertion in model container [2018-11-07 10:32:09,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:32:09" (3/3) ... [2018-11-07 10:32:09,594 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call3_true-termination.i [2018-11-07 10:32:09,602 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 10:32:09,610 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 10:32:09,626 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 10:32:09,661 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 10:32:09,661 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 10:32:09,661 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 10:32:09,662 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 10:32:09,662 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 10:32:09,662 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 10:32:09,662 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 10:32:09,662 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 10:32:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2018-11-07 10:32:09,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-07 10:32:09,689 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:32:09,690 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:32:09,692 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:32:09,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:32:09,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1609639134, now seen corresponding path program 1 times [2018-11-07 10:32:09,702 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:32:09,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:32:09,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:32:09,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:32:09,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:32:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:32:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:32:09,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:32:09,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 10:32:09,845 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:32:09,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 10:32:09,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 10:32:09,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 10:32:09,869 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2018-11-07 10:32:09,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:32:09,894 INFO L93 Difference]: Finished difference Result 50 states and 59 transitions. [2018-11-07 10:32:09,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 10:32:09,896 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-11-07 10:32:09,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:32:09,905 INFO L225 Difference]: With dead ends: 50 [2018-11-07 10:32:09,905 INFO L226 Difference]: Without dead ends: 23 [2018-11-07 10:32:09,909 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 [2018-11-07 10:32:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-11-07 10:32:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-11-07 10:32:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-07 10:32:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-11-07 10:32:09,952 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2018-11-07 10:32:09,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:32:09,953 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-11-07 10:32:09,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 10:32:09,953 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-11-07 10:32:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-07 10:32:09,955 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:32:09,955 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:32:09,956 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:32:09,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:32:09,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1276177946, now seen corresponding path program 1 times [2018-11-07 10:32:09,957 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:32:09,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:32:09,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:32:09,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:32:09,958 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:32:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:32:10,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:32:10,045 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:32:10,045 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 10:32:10,046 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:32:10,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 10:32:10,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 10:32:10,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 10:32:10,048 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 3 states. [2018-11-07 10:32:10,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:32:10,146 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2018-11-07 10:32:10,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 10:32:10,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-11-07 10:32:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:32:10,149 INFO L225 Difference]: With dead ends: 45 [2018-11-07 10:32:10,149 INFO L226 Difference]: Without dead ends: 34 [2018-11-07 10:32:10,150 INFO L604 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 [2018-11-07 10:32:10,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-07 10:32:10,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2018-11-07 10:32:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-07 10:32:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2018-11-07 10:32:10,158 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2018-11-07 10:32:10,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:32:10,159 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2018-11-07 10:32:10,159 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 10:32:10,159 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2018-11-07 10:32:10,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-07 10:32:10,160 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:32:10,160 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:32:10,160 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:32:10,161 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:32:10,161 INFO L82 PathProgramCache]: Analyzing trace with hash 2114953933, now seen corresponding path program 1 times [2018-11-07 10:32:10,161 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:32:10,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:32:10,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:32:10,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:32:10,163 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:32:10,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:32:10,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:32:10,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:32:10,274 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:32:10,275 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-11-07 10:32:10,277 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [10], [13], [15], [16], [17], [19], [23], [27], [28], [31], [48], [51], [53], [59], [60], [61], [63] [2018-11-07 10:32:10,312 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 10:32:10,312 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 10:32:10,485 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 10:32:10,486 INFO L272 AbstractInterpreter]: Visited 21 different actions 33 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 16 variables. [2018-11-07 10:32:10,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:32:10,518 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 10:32:10,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:32:10,518 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 [2018-11-07 10:32:10,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:32:10,532 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 10:32:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:32:10,577 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 10:32:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:32:10,620 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 10:32:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:32:10,779 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 10:32:10,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-07 10:32:10,780 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 10:32:10,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 10:32:10,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 10:32:10,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-07 10:32:10,782 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 5 states. [2018-11-07 10:32:11,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:32:11,058 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2018-11-07 10:32:11,058 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 10:32:11,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-07 10:32:11,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:32:11,060 INFO L225 Difference]: With dead ends: 60 [2018-11-07 10:32:11,060 INFO L226 Difference]: Without dead ends: 45 [2018-11-07 10:32:11,061 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-07 10:32:11,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-07 10:32:11,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2018-11-07 10:32:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-07 10:32:11,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2018-11-07 10:32:11,079 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 22 [2018-11-07 10:32:11,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:32:11,079 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2018-11-07 10:32:11,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 10:32:11,080 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2018-11-07 10:32:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-07 10:32:11,081 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:32:11,082 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:32:11,082 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:32:11,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:32:11,082 INFO L82 PathProgramCache]: Analyzing trace with hash 882173434, now seen corresponding path program 2 times [2018-11-07 10:32:11,084 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:32:11,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:32:11,085 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:32:11,085 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:32:11,086 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:32:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:32:11,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:32:11,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:32:11,177 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:32:11,178 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 10:32:11,178 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 10:32:11,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:32:11,178 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 10:32:11,196 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 10:32:11,197 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 10:32:11,227 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2018-11-07 10:32:11,227 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 10:32:11,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 10:32:11,320 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 10:32:11,320 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 10:32:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 10:32:11,454 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 10:32:11,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 11 [2018-11-07 10:32:11,454 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:32:11,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 10:32:11,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 10:32:11,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 10:32:11,458 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 5 states. [2018-11-07 10:32:11,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:32:11,630 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2018-11-07 10:32:11,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 10:32:11,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-07 10:32:11,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:32:11,634 INFO L225 Difference]: With dead ends: 44 [2018-11-07 10:32:11,634 INFO L226 Difference]: Without dead ends: 39 [2018-11-07 10:32:11,635 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-11-07 10:32:11,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-11-07 10:32:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2018-11-07 10:32:11,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-07 10:32:11,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-11-07 10:32:11,642 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 27 [2018-11-07 10:32:11,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:32:11,643 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-11-07 10:32:11,643 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 10:32:11,643 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-11-07 10:32:11,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-07 10:32:11,644 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:32:11,645 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:32:11,645 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:32:11,645 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:32:11,645 INFO L82 PathProgramCache]: Analyzing trace with hash 146533222, now seen corresponding path program 1 times [2018-11-07 10:32:11,645 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:32:11,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:32:11,647 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-07 10:32:11,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:32:11,647 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:32:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:32:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-07 10:32:11,730 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:32:11,730 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:32:11,730 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-11-07 10:32:11,730 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [10], [13], [15], [16], [17], [19], [23], [27], [28], [31], [33], [38], [40], [48], [51], [53], [59], [60], [61], [63] [2018-11-07 10:32:11,732 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 10:32:11,733 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 10:32:11,821 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 10:32:11,821 INFO L272 AbstractInterpreter]: Visited 24 different actions 56 times. Merged at 11 different actions 22 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 17 variables. [2018-11-07 10:32:11,849 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:32:11,849 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 10:32:11,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:32:11,849 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 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 [2018-11-07 10:32:11,861 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:32:11,861 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 10:32:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:32:11,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 10:32:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-07 10:32:11,918 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 10:32:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-07 10:32:12,016 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 10:32:12,017 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2018-11-07 10:32:12,017 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 10:32:12,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 10:32:12,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 10:32:12,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-07 10:32:12,018 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2018-11-07 10:32:12,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:32:12,386 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2018-11-07 10:32:12,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 10:32:12,386 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-11-07 10:32:12,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:32:12,387 INFO L225 Difference]: With dead ends: 75 [2018-11-07 10:32:12,387 INFO L226 Difference]: Without dead ends: 55 [2018-11-07 10:32:12,388 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-07 10:32:12,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-07 10:32:12,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2018-11-07 10:32:12,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-07 10:32:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-11-07 10:32:12,397 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 32 [2018-11-07 10:32:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:32:12,398 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-11-07 10:32:12,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 10:32:12,398 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-11-07 10:32:12,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-07 10:32:12,399 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:32:12,399 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:32:12,399 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:32:12,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:32:12,400 INFO L82 PathProgramCache]: Analyzing trace with hash 603773523, now seen corresponding path program 2 times [2018-11-07 10:32:12,400 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:32:12,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:32:12,401 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:32:12,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:32:12,402 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:32:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:32:12,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-07 10:32:12,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:32:12,485 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:32:12,486 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 10:32:12,486 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 10:32:12,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:32:12,486 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 10:32:12,496 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 10:32:12,496 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 10:32:12,519 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-07 10:32:12,519 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 10:32:12,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 10:32:12,603 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-07 10:32:12,603 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 10:32:12,709 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-07 10:32:12,729 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 10:32:12,730 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6] total 13 [2018-11-07 10:32:12,730 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:32:12,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 10:32:12,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 10:32:12,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 10:32:12,731 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2018-11-07 10:32:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:32:12,806 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2018-11-07 10:32:12,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 10:32:12,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2018-11-07 10:32:12,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:32:12,808 INFO L225 Difference]: With dead ends: 49 [2018-11-07 10:32:12,808 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 10:32:12,809 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-11-07 10:32:12,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 10:32:12,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 10:32:12,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 10:32:12,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 10:32:12,811 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-11-07 10:32:12,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:32:12,811 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 10:32:12,812 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 10:32:12,812 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 10:32:12,812 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 10:32:12,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 10:32:12,889 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-07 10:32:12,889 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-07 10:32:12,889 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 10:32:12,889 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 10:32:12,890 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 10:32:12,890 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 10:32:12,890 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 10:32:12,890 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2018-11-07 10:32:12,890 INFO L425 ceAbstractionStarter]: For program point L17-1(line 17) no Hoare annotation was computed. [2018-11-07 10:32:12,890 INFO L425 ceAbstractionStarter]: For program point L17-2(lines 17 21) no Hoare annotation was computed. [2018-11-07 10:32:12,890 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 17 21) no Hoare annotation was computed. [2018-11-07 10:32:12,890 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2018-11-07 10:32:12,890 INFO L425 ceAbstractionStarter]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2018-11-07 10:32:12,891 INFO L421 ceAbstractionStarter]: At program point L17-5(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2018-11-07 10:32:12,891 INFO L421 ceAbstractionStarter]: At program point L17-6(lines 17 21) the Hoare annotation is: (<= main_~i~0 1023) [2018-11-07 10:32:12,891 INFO L425 ceAbstractionStarter]: For program point L13-3(lines 13 15) no Hoare annotation was computed. [2018-11-07 10:32:12,891 INFO L428 ceAbstractionStarter]: At program point L13-4(lines 13 15) the Hoare annotation is: true [2018-11-07 10:32:12,891 INFO L425 ceAbstractionStarter]: For program point L13-5(lines 13 15) no Hoare annotation was computed. [2018-11-07 10:32:12,891 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true [2018-11-07 10:32:12,891 INFO L425 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-11-07 10:32:12,892 INFO L425 ceAbstractionStarter]: For program point L18(lines 18 20) no Hoare annotation was computed. [2018-11-07 10:32:12,892 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-07 10:32:12,892 INFO L425 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-07 10:32:12,892 INFO L425 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-11-07 10:32:12,892 INFO L425 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-11-07 10:32:12,892 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-07 10:32:12,892 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-07 10:32:12,892 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-07 10:32:12,893 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-07 10:32:12,893 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-07 10:32:12,893 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-07 10:32:12,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:32:12 BoogieIcfgContainer [2018-11-07 10:32:12,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 10:32:12,906 INFO L168 Benchmark]: Toolchain (without parser) took 4291.60 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -548.9 MB). Peak memory consumption was 171.0 MB. Max. memory is 7.1 GB. [2018-11-07 10:32:12,908 INFO L168 Benchmark]: CDTParser took 0.16 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. [2018-11-07 10:32:12,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.48 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. [2018-11-07 10:32:12,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.32 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. [2018-11-07 10:32:12,910 INFO L168 Benchmark]: Boogie Preprocessor took 36.96 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. [2018-11-07 10:32:12,910 INFO L168 Benchmark]: RCFGBuilder took 571.03 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -771.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2018-11-07 10:32:12,911 INFO L168 Benchmark]: TraceAbstraction took 3318.09 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 212.0 MB). Peak memory consumption was 212.0 MB. Max. memory is 7.1 GB. [2018-11-07 10:32:12,916 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 323.48 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 31.32 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 36.96 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 571.03 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -771.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3318.09 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 212.0 MB). Peak memory consumption was 212.0 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: 17]: Loop Invariant Derived loop invariant: i <= 1023 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 1.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 123 SDtfs, 74 SDslu, 192 SDs, 0 SdLazy, 137 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 259 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 22 NumberOfFragments, 12 HoareAnnotationTreeSize, 13 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 267 NumberOfCodeBlocks, 247 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 371 ConstructedInterpolants, 0 QuantifiedInterpolants, 17329 SizeOfPredicates, 7 NumberOfNonLiveVariables, 262 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 78/141 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...