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-INT-LIM.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 20:33:17,928 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 20:33:17,931 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 20:33:17,951 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 20:33:17,951 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 20:33:17,953 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 20:33:17,955 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 20:33:17,958 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 20:33:17,960 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 20:33:17,963 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 20:33:17,966 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 20:33:17,966 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 20:33:17,967 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 20:33:17,968 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 20:33:17,969 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 20:33:17,970 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 20:33:17,971 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 20:33:17,973 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 20:33:17,975 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 20:33:17,976 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 20:33:17,977 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 20:33:17,979 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 20:33:17,981 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 20:33:17,981 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 20:33:17,982 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 20:33:17,983 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 20:33:17,984 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 20:33:17,985 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 20:33:17,985 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 20:33:17,987 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 20:33:17,987 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 20:33:17,988 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 20:33:17,990 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 20:33:18,009 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 20:33:18,009 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 20:33:18,010 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 20:33:18,010 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 20:33:18,011 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 20:33:18,011 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 20:33:18,011 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 20:33:18,011 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 20:33:18,011 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 20:33:18,012 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 20:33:18,012 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 20:33:18,012 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 20:33:18,012 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 20:33:18,013 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 20:33:18,013 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 20:33:18,013 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 20:33:18,014 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 20:33:18,014 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 20:33:18,014 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 20:33:18,014 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 20:33:18,014 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 20:33:18,015 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 20:33:18,015 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 20:33:18,015 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 20:33:18,015 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 20:33:18,015 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 20:33:18,016 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 20:33:18,016 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 20:33:18,016 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 20:33:18,016 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 20:33:18,016 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 20:33:18,017 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 20:33:18,017 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 20:33:18,017 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 20:33:18,017 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 20:33:18,063 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 20:33:18,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 20:33:18,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 20:33:18,088 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 20:33:18,088 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 20:33:18,089 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i [2018-11-12 20:33:18,153 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c52f9f39/a3b1a63f4f7445e3b4c79dd44ac9ba0e/FLAGe07e7d9d1 [2018-11-12 20:33:18,613 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 20:33:18,614 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i [2018-11-12 20:33:18,621 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c52f9f39/a3b1a63f4f7445e3b4c79dd44ac9ba0e/FLAGe07e7d9d1 [2018-11-12 20:33:18,644 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7c52f9f39/a3b1a63f4f7445e3b4c79dd44ac9ba0e [2018-11-12 20:33:18,656 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 20:33:18,658 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 20:33:18,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 20:33:18,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 20:33:18,667 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 20:33:18,668 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:33:18" (1/1) ... [2018-11-12 20:33:18,671 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a541c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18, skipping insertion in model container [2018-11-12 20:33:18,671 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:33:18" (1/1) ... [2018-11-12 20:33:18,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 20:33:18,705 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 20:33:18,922 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:33:18,926 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 20:33:18,951 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:33:18,976 INFO L193 MainTranslator]: Completed translation [2018-11-12 20:33:18,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18 WrapperNode [2018-11-12 20:33:18,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 20:33:18,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 20:33:18,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 20:33:18,979 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 20:33:18,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18" (1/1) ... [2018-11-12 20:33:19,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18" (1/1) ... [2018-11-12 20:33:19,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 20:33:19,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 20:33:19,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 20:33:19,008 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 20:33:19,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18" (1/1) ... [2018-11-12 20:33:19,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18" (1/1) ... [2018-11-12 20:33:19,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18" (1/1) ... [2018-11-12 20:33:19,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18" (1/1) ... [2018-11-12 20:33:19,035 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18" (1/1) ... [2018-11-12 20:33:19,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18" (1/1) ... [2018-11-12 20:33:19,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18" (1/1) ... [2018-11-12 20:33:19,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 20:33:19,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 20:33:19,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 20:33:19,044 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 20:33:19,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18" (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 [2018-11-12 20:33:19,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-12 20:33:19,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 20:33:19,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 20:33:19,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-12 20:33:19,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 20:33:19,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 20:33:19,207 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 20:33:19,207 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 20:33:19,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-12 20:33:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-12 20:33:19,209 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-12 20:33:19,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-12 20:33:19,496 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 20:33:19,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:33:19 BoogieIcfgContainer [2018-11-12 20:33:19,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 20:33:19,498 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 20:33:19,498 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 20:33:19,501 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 20:33:19,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:33:18" (1/3) ... [2018-11-12 20:33:19,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523cdc20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:33:19, skipping insertion in model container [2018-11-12 20:33:19,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:33:18" (2/3) ... [2018-11-12 20:33:19,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@523cdc20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:33:19, skipping insertion in model container [2018-11-12 20:33:19,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:33:19" (3/3) ... [2018-11-12 20:33:19,505 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call1_true-termination.i [2018-11-12 20:33:19,515 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 20:33:19,523 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 20:33:19,546 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 20:33:19,611 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 20:33:19,611 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 20:33:19,612 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 20:33:19,612 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 20:33:19,612 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 20:33:19,612 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 20:33:19,612 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 20:33:19,613 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 20:33:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-11-12 20:33:19,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-12 20:33:19,651 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:33:19,652 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:33:19,658 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:33:19,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:33:19,664 INFO L82 PathProgramCache]: Analyzing trace with hash -173834890, now seen corresponding path program 1 times [2018-11-12 20:33:19,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:33:19,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:33:19,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:33:19,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:33:19,714 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:33:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:33:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:33:19,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:33:19,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-12 20:33:19,809 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:33:19,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-12 20:33:19,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-12 20:33:19,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-12 20:33:19,829 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-11-12 20:33:19,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:33:19,851 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2018-11-12 20:33:19,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-12 20:33:19,852 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-11-12 20:33:19,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:33:19,859 INFO L225 Difference]: With dead ends: 35 [2018-11-12 20:33:19,860 INFO L226 Difference]: Without dead ends: 15 [2018-11-12 20:33:19,863 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 [2018-11-12 20:33:19,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-12 20:33:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-12 20:33:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-12 20:33:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-12 20:33:19,898 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-11-12 20:33:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:33:19,898 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-12 20:33:19,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-12 20:33:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-12 20:33:19,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-12 20:33:19,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:33:19,900 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:33:19,900 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:33:19,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:33:19,901 INFO L82 PathProgramCache]: Analyzing trace with hash -737648989, now seen corresponding path program 1 times [2018-11-12 20:33:19,901 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:33:19,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:33:19,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:33:19,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:33:19,903 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:33:19,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:33:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:33:20,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:33:20,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 20:33:20,008 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:33:20,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 20:33:20,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 20:33:20,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 20:33:20,011 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2018-11-12 20:33:20,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:33:20,036 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-11-12 20:33:20,036 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 20:33:20,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-12 20:33:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:33:20,038 INFO L225 Difference]: With dead ends: 24 [2018-11-12 20:33:20,038 INFO L226 Difference]: Without dead ends: 18 [2018-11-12 20:33:20,039 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 [2018-11-12 20:33:20,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-12 20:33:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-12 20:33:20,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-12 20:33:20,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-12 20:33:20,044 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2018-11-12 20:33:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:33:20,045 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-12 20:33:20,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 20:33:20,045 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-12 20:33:20,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-12 20:33:20,046 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:33:20,046 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:33:20,046 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:33:20,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:33:20,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1154592614, now seen corresponding path program 1 times [2018-11-12 20:33:20,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:33:20,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:33:20,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:33:20,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:33:20,049 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:33:20,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:33:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:33:20,147 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:33:20,148 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:33:20,150 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2018-11-12 20:33:20,151 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [9], [12], [14], [16], [20], [24], [27], [29], [35], [36], [37], [39] [2018-11-12 20:33:20,182 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 20:33:20,182 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 20:33:20,392 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 20:33:20,394 INFO L272 AbstractInterpreter]: Visited 15 different actions 38 times. Merged at 3 different actions 17 times. Widened at 1 different actions 2 times. Performed 144 root evaluator evaluations with a maximum evaluation depth of 4. Performed 144 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 1 fixpoints after 1 different actions. Largest state had 15 variables. [2018-11-12 20:33:20,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:33:20,407 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 20:33:20,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:33:20,407 INFO L192 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 [2018-11-12 20:33:20,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:33:20,420 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 20:33:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:33:20,461 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:33:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:33:20,523 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:33:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:33:20,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 20:33:20,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-12 20:33:20,596 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 20:33:20,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 20:33:20,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 20:33:20,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-12 20:33:20,598 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2018-11-12 20:33:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:33:20,639 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-11-12 20:33:20,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 20:33:20,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-11-12 20:33:20,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:33:20,640 INFO L225 Difference]: With dead ends: 27 [2018-11-12 20:33:20,640 INFO L226 Difference]: Without dead ends: 21 [2018-11-12 20:33:20,641 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-12 20:33:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-12 20:33:20,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2018-11-12 20:33:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-11-12 20:33:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-11-12 20:33:20,646 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 16 [2018-11-12 20:33:20,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:33:20,646 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-11-12 20:33:20,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 20:33:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-11-12 20:33:20,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-12 20:33:20,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:33:20,648 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:33:20,648 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:33:20,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:33:20,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1276704957, now seen corresponding path program 2 times [2018-11-12 20:33:20,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:33:20,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:33:20,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:33:20,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:33:20,650 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:33:20,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:33:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:33:20,813 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:33:20,813 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 20:33:20,813 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-12 20:33:20,813 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 20:33:20,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 20:33:20,814 INFO L192 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 [2018-11-12 20:33:20,834 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-12 20:33:20,834 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-12 20:33:20,886 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-12 20:33:20,886 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-12 20:33:20,890 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 20:33:20,974 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-11-12 20:33:20,990 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-11-12 20:33:20,991 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:33:21,018 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:33:21,084 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:33:21,085 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2018-11-12 20:33:21,228 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-11-12 20:33:21,251 INFO L682 Elim1Store]: detected equality via solver [2018-11-12 20:33:21,252 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2018-11-12 20:33:21,253 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-12 20:33:21,259 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:33:21,278 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-12 20:33:21,278 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:7 [2018-11-12 20:33:21,359 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-12 20:33:21,359 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 20:33:21,740 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-12 20:33:21,766 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-12 20:33:21,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [5] total 16 [2018-11-12 20:33:21,767 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:33:21,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 20:33:21,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 20:33:21,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-11-12 20:33:21,769 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 8 states. [2018-11-12 20:33:24,074 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-12 20:33:24,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:33:24,250 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2018-11-12 20:33:24,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 20:33:24,251 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2018-11-12 20:33:24,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:33:24,251 INFO L225 Difference]: With dead ends: 20 [2018-11-12 20:33:24,251 INFO L226 Difference]: Without dead ends: 0 [2018-11-12 20:33:24,252 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-11-12 20:33:24,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-12 20:33:24,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-12 20:33:24,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-12 20:33:24,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-12 20:33:24,253 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2018-11-12 20:33:24,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:33:24,254 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-12 20:33:24,254 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 20:33:24,254 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-12 20:33:24,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-12 20:33:24,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-12 20:33:24,352 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-12 20:33:24,352 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-12 20:33:24,352 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:33:24,352 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:33:24,353 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-12 20:33:24,353 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-12 20:33:24,353 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-12 20:33:24,353 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 15) the Hoare annotation is: true [2018-11-12 20:33:24,353 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 15) no Hoare annotation was computed. [2018-11-12 20:33:24,353 INFO L421 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (and (<= 1023 |main_#t~mem1|) (exists ((v_main_~i~0_10 Int)) (and (< v_main_~i~0_10 1024) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* 4 v_main_~i~0_10) |main_~#A~0.offset|))) (<= 1023 v_main_~i~0_10))) (exists ((v_main_~i~0_10 Int)) (and (< v_main_~i~0_10 1024) (<= main_~i~0 (+ v_main_~i~0_10 1)) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* 4 v_main_~i~0_10) |main_~#A~0.offset|))))) (< |main_#t~mem1| 1024)) [2018-11-12 20:33:24,353 INFO L425 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-12 20:33:24,354 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 15) no Hoare annotation was computed. [2018-11-12 20:33:24,354 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2018-11-12 20:33:24,354 INFO L425 ceAbstractionStarter]: For program point L11-3(lines 11 13) no Hoare annotation was computed. [2018-11-12 20:33:24,354 INFO L421 ceAbstractionStarter]: At program point L11-4(lines 11 13) the Hoare annotation is: (or (exists ((v_main_~i~0_10 Int)) (and (< v_main_~i~0_10 1024) (<= main_~i~0 (+ v_main_~i~0_10 1)) (= v_main_~i~0_10 (select (select |#memory_int| |main_~#A~0.base|) (+ (* 4 v_main_~i~0_10) |main_~#A~0.offset|))))) (= main_~i~0 0)) [2018-11-12 20:33:24,354 INFO L425 ceAbstractionStarter]: For program point L11-5(lines 11 13) no Hoare annotation was computed. [2018-11-12 20:33:24,354 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-11-12 20:33:24,355 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-11-12 20:33:24,355 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-11-12 20:33:24,355 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-11-12 20:33:24,355 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-11-12 20:33:24,355 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-11-12 20:33:24,360 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,361 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,362 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,362 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,363 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-12 20:33:24,368 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,368 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,369 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,369 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,369 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-12 20:33:24,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:33:24 BoogieIcfgContainer [2018-11-12 20:33:24,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 20:33:24,372 INFO L168 Benchmark]: Toolchain (without parser) took 5714.81 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.2 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -669.3 MB). Peak memory consumption was 100.9 MB. Max. memory is 7.1 GB. [2018-11-12 20:33:24,374 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:33:24,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.08 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. [2018-11-12 20:33:24,375 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.60 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. [2018-11-12 20:33:24,375 INFO L168 Benchmark]: Boogie Preprocessor took 35.24 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. [2018-11-12 20:33:24,376 INFO L168 Benchmark]: RCFGBuilder took 453.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2018-11-12 20:33:24,377 INFO L168 Benchmark]: TraceAbstraction took 4873.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 135.0 MB). Peak memory consumption was 135.0 MB. Max. memory is 7.1 GB. [2018-11-12 20:33:24,382 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.08 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 29.60 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 35.24 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 453.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 770.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4873.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 135.0 MB). Peak memory consumption was 135.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant [2018-11-12 20:33:24,392 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,392 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,392 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,392 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,393 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-12 20:33:24,393 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,393 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,394 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,394 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_10,QUANTIFIED] [2018-11-12 20:33:24,394 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (\exists v_main_~i~0_10 : int :: (v_main_~i~0_10 < 1024 && i <= v_main_~i~0_10 + 1) && v_main_~i~0_10 == unknown-#memory_int-unknown[A][4 * v_main_~i~0_10 + A]) || i == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 4.7s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 2.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 7 SDslu, 82 SDs, 0 SdLazy, 44 SolverSat, 2 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 77 HoareAnnotationTreeSize, 10 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 122 ConstructedInterpolants, 3 QuantifiedInterpolants, 5902 SizeOfPredicates, 11 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 14/27 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...