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.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 05:00:02,814 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 05:00:02,819 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 05:00:02,832 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 05:00:02,832 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 05:00:02,833 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 05:00:02,834 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 05:00:02,836 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 05:00:02,838 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 05:00:02,839 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 05:00:02,840 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 05:00:02,840 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 05:00:02,841 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 05:00:02,842 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 05:00:02,843 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 05:00:02,844 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 05:00:02,845 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 05:00:02,847 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 05:00:02,849 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 05:00:02,850 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 05:00:02,852 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 05:00:02,853 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 05:00:02,855 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 05:00:02,862 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 05:00:02,862 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 05:00:02,863 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 05:00:02,864 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 05:00:02,864 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 05:00:02,882 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 05:00:02,882 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 05:00:02,883 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 05:00:02,883 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 05:00:02,883 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 05:00:02,883 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 05:00:02,884 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 05:00:02,884 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 05:00:02,884 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 05:00:02,884 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 05:00:02,884 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 05:00:02,885 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 05:00:02,885 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 05:00:02,885 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 05:00:02,886 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 05:00:02,886 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 05:00:02,886 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 05:00:02,886 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 05:00:02,886 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 05:00:02,887 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 05:00:02,887 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 05:00:02,887 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 05:00:02,887 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 05:00:02,887 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 05:00:02,888 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 05:00:02,888 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 05:00:02,888 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 05:00:02,888 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 05:00:02,888 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 05:00:02,889 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 05:00:02,889 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 05:00:02,889 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 05:00:02,889 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 05:00:02,889 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 05:00:02,932 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 05:00:02,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 05:00:02,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 05:00:02,954 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 05:00:02,954 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 05:00:02,955 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i [2018-11-07 05:00:03,016 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/207e64182/04c1e10753684581a7f17308de6e6959/FLAGfe8548f69 [2018-11-07 05:00:03,448 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 05:00:03,452 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_true-unreach-call1_true-termination.i [2018-11-07 05:00:03,458 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/207e64182/04c1e10753684581a7f17308de6e6959/FLAGfe8548f69 [2018-11-07 05:00:03,479 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/207e64182/04c1e10753684581a7f17308de6e6959 [2018-11-07 05:00:03,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 05:00:03,494 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 05:00:03,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 05:00:03,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 05:00:03,499 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 05:00:03,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:00:03" (1/1) ... [2018-11-07 05:00:03,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bce9522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03, skipping insertion in model container [2018-11-07 05:00:03,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:00:03" (1/1) ... [2018-11-07 05:00:03,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 05:00:03,535 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 05:00:03,757 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 05:00:03,761 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 05:00:03,779 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 05:00:03,800 INFO L193 MainTranslator]: Completed translation [2018-11-07 05:00:03,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03 WrapperNode [2018-11-07 05:00:03,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 05:00:03,801 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 05:00:03,801 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 05:00:03,801 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 05:00:03,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03" (1/1) ... [2018-11-07 05:00:03,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03" (1/1) ... [2018-11-07 05:00:03,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 05:00:03,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 05:00:03,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 05:00:03,825 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 05:00:03,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03" (1/1) ... [2018-11-07 05:00:03,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03" (1/1) ... [2018-11-07 05:00:03,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03" (1/1) ... [2018-11-07 05:00:03,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03" (1/1) ... [2018-11-07 05:00:03,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03" (1/1) ... [2018-11-07 05:00:03,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03" (1/1) ... [2018-11-07 05:00:03,850 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03" (1/1) ... [2018-11-07 05:00:03,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 05:00:03,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 05:00:03,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 05:00:03,853 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 05:00:03,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 05:00:03,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-07 05:00:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 05:00:03,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 05:00:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-07 05:00:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 05:00:03,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 05:00:03,980 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 05:00:03,981 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 05:00:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-07 05:00:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 05:00:03,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 05:00:03,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-07 05:00:04,306 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 05:00:04,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:00:04 BoogieIcfgContainer [2018-11-07 05:00:04,306 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 05:00:04,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 05:00:04,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 05:00:04,311 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 05:00:04,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:00:03" (1/3) ... [2018-11-07 05:00:04,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa7b908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:00:04, skipping insertion in model container [2018-11-07 05:00:04,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:00:03" (2/3) ... [2018-11-07 05:00:04,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fa7b908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:00:04, skipping insertion in model container [2018-11-07 05:00:04,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:00:04" (3/3) ... [2018-11-07 05:00:04,314 INFO L112 eAbstractionObserver]: Analyzing ICFG array_true-unreach-call1_true-termination.i [2018-11-07 05:00:04,324 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 05:00:04,332 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 05:00:04,349 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 05:00:04,382 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 05:00:04,382 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 05:00:04,383 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 05:00:04,383 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 05:00:04,383 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 05:00:04,383 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 05:00:04,383 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 05:00:04,383 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 05:00:04,402 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-11-07 05:00:04,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-07 05:00:04,409 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:00:04,410 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:00:04,413 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:00:04,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:00:04,420 INFO L82 PathProgramCache]: Analyzing trace with hash 526261342, now seen corresponding path program 1 times [2018-11-07 05:00:04,423 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:00:04,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:00:04,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:00:04,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:00:04,476 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:00:04,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:00:04,550 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 05:00:04,552 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 05:00:04,552 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 05:00:04,552 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:00:04,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 05:00:04,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 05:00:04,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 05:00:04,572 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2018-11-07 05:00:04,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:00:04,593 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2018-11-07 05:00:04,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 05:00:04,595 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-11-07 05:00:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:00:04,604 INFO L225 Difference]: With dead ends: 41 [2018-11-07 05:00:04,604 INFO L226 Difference]: Without dead ends: 17 [2018-11-07 05:00:04,608 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 05:00:04,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-07 05:00:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-07 05:00:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-07 05:00:04,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-07 05:00:04,651 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2018-11-07 05:00:04,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:00:04,652 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-07 05:00:04,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 05:00:04,652 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-07 05:00:04,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-07 05:00:04,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:00:04,653 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:00:04,653 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:00:04,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:00:04,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1427482147, now seen corresponding path program 1 times [2018-11-07 05:00:04,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:00:04,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:00:04,656 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:00:04,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:00:04,656 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:00:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:00:04,763 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 05:00:04,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 05:00:04,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 05:00:04,764 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:00:04,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 05:00:04,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 05:00:04,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 05:00:04,768 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2018-11-07 05:00:04,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:00:04,876 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-11-07 05:00:04,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 05:00:04,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-07 05:00:04,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:00:04,877 INFO L225 Difference]: With dead ends: 27 [2018-11-07 05:00:04,878 INFO L226 Difference]: Without dead ends: 21 [2018-11-07 05:00:04,879 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 05:00:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-07 05:00:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-11-07 05:00:04,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-07 05:00:04,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-07 05:00:04,884 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 14 [2018-11-07 05:00:04,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:00:04,885 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-07 05:00:04,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 05:00:04,885 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-07 05:00:04,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-07 05:00:04,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:00:04,886 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:00:04,887 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:00:04,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:00:04,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1966302602, now seen corresponding path program 1 times [2018-11-07 05:00:04,887 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:00:04,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:00:04,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:00:04,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:00:04,889 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:00:04,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:00:05,007 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 05:00:05,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:00:05,008 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:00:05,009 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2018-11-07 05:00:05,011 INFO L202 CegarAbsIntRunner]: [0], [1], [5], [6], [10], [13], [15], [16], [18], [22], [28], [31], [33], [39], [40], [41], [43] [2018-11-07 05:00:05,058 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 05:00:05,058 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 05:00:05,376 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 05:00:05,378 INFO L272 AbstractInterpreter]: Visited 17 different actions 55 times. Merged at 4 different actions 30 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 15 variables. [2018-11-07 05:00:05,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:00:05,424 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 05:00:05,425 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:00:05,425 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 05:00:05,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:00:05,441 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 05:00:05,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:00:05,502 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:00:05,561 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 05:00:05,562 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:00:05,637 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 05:00:05,667 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 05:00:05,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2018-11-07 05:00:05,667 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 05:00:05,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 05:00:05,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 05:00:05,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-07 05:00:05,669 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 5 states. [2018-11-07 05:00:05,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:00:05,808 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-07 05:00:05,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 05:00:05,810 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-11-07 05:00:05,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:00:05,811 INFO L225 Difference]: With dead ends: 31 [2018-11-07 05:00:05,812 INFO L226 Difference]: Without dead ends: 25 [2018-11-07 05:00:05,812 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 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 05:00:05,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-07 05:00:05,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-11-07 05:00:05,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-07 05:00:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-11-07 05:00:05,821 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 18 [2018-11-07 05:00:05,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:00:05,821 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2018-11-07 05:00:05,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 05:00:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2018-11-07 05:00:05,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-07 05:00:05,823 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 05:00:05,823 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 05:00:05,823 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 05:00:05,823 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 05:00:05,824 INFO L82 PathProgramCache]: Analyzing trace with hash 939189903, now seen corresponding path program 2 times [2018-11-07 05:00:05,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 05:00:05,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:00:05,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 05:00:05,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 05:00:05,825 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 05:00:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 05:00:05,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 05:00:05,921 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:00:05,922 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 05:00:05,922 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 05:00:05,922 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 05:00:05,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 05:00:05,922 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 05:00:05,936 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 05:00:05,936 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 05:00:05,991 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-07 05:00:05,991 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 05:00:05,995 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 05:00:06,186 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 [2018-11-07 05:00:06,198 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 [2018-11-07 05:00:06,199 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 05:00:06,213 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 05:00:06,223 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 05:00:06,224 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2018-11-07 05:00:06,371 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 [2018-11-07 05:00:06,387 INFO L682 Elim1Store]: detected equality via solver [2018-11-07 05:00:06,388 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 [2018-11-07 05:00:06,389 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 05:00:06,428 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 05:00:06,453 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 05:00:06,454 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:27, output treesize:7 [2018-11-07 05:00:06,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 05:00:06,612 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 05:00:06,897 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 20 treesize of output 18 [2018-11-07 05:00:07,030 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2018-11-07 05:00:07,044 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 7 treesize of output 3 [2018-11-07 05:00:07,047 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-07 05:00:07,118 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-07 05:00:07,306 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-07 05:00:07,306 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:41, output treesize:9 [2018-11-07 05:00:07,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 05:00:07,371 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 05:00:07,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [5] total 17 [2018-11-07 05:00:07,371 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 05:00:07,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 05:00:07,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 05:00:07,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2018-11-07 05:00:07,373 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2018-11-07 05:00:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 05:00:07,618 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-07 05:00:07,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 05:00:07,619 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2018-11-07 05:00:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 05:00:07,619 INFO L225 Difference]: With dead ends: 23 [2018-11-07 05:00:07,620 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 05:00:07,621 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2018-11-07 05:00:07,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 05:00:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 05:00:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 05:00:07,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 05:00:07,622 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2018-11-07 05:00:07,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 05:00:07,622 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 05:00:07,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 05:00:07,623 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 05:00:07,623 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 05:00:07,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 05:00:07,703 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-11-07 05:00:07,703 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-11-07 05:00:07,703 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 05:00:07,703 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 05:00:07,704 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 05:00:07,704 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 05:00:07,704 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 05:00:07,704 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 8 15) the Hoare annotation is: true [2018-11-07 05:00:07,704 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 8 15) no Hoare annotation was computed. [2018-11-07 05:00:07,705 INFO L421 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (and (<= 1023 |main_#t~mem1|) (exists ((v_main_~i~0_11 Int)) (and (<= main_~i~0 (+ v_main_~i~0_11 1)) (< v_main_~i~0_11 1024) (= v_main_~i~0_11 (select (select |#memory_int| |main_~#A~0.base|) (+ (* 4 v_main_~i~0_11) |main_~#A~0.offset|))))) (< |main_#t~mem1| 1024) (exists ((v_main_~i~0_11 Int)) (and (<= 1023 v_main_~i~0_11) (< v_main_~i~0_11 1024) (= v_main_~i~0_11 (select (select |#memory_int| |main_~#A~0.base|) (+ (* 4 v_main_~i~0_11) |main_~#A~0.offset|)))))) [2018-11-07 05:00:07,705 INFO L425 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2018-11-07 05:00:07,705 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 8 15) no Hoare annotation was computed. [2018-11-07 05:00:07,705 INFO L425 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2018-11-07 05:00:07,705 INFO L425 ceAbstractionStarter]: For program point L12-1(lines 11 13) no Hoare annotation was computed. [2018-11-07 05:00:07,705 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2018-11-07 05:00:07,706 INFO L425 ceAbstractionStarter]: For program point L9(line 9) no Hoare annotation was computed. [2018-11-07 05:00:07,706 INFO L421 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: (or (= main_~i~0 0) (exists ((v_main_~i~0_11 Int)) (and (<= main_~i~0 (+ v_main_~i~0_11 1)) (< v_main_~i~0_11 1024) (= v_main_~i~0_11 (select (select |#memory_int| |main_~#A~0.base|) (+ (* 4 v_main_~i~0_11) |main_~#A~0.offset|)))))) [2018-11-07 05:00:07,706 INFO L425 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2018-11-07 05:00:07,706 INFO L425 ceAbstractionStarter]: For program point L11-4(lines 11 13) no Hoare annotation was computed. [2018-11-07 05:00:07,706 INFO L425 ceAbstractionStarter]: For program point L9-2(line 9) no Hoare annotation was computed. [2018-11-07 05:00:07,707 INFO L425 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-11-07 05:00:07,707 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-11-07 05:00:07,707 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-11-07 05:00:07,707 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-11-07 05:00:07,707 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-11-07 05:00:07,708 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-11-07 05:00:07,713 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,714 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,714 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,715 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,718 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 05:00:07,726 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,726 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,726 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,727 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,727 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 05:00:07,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:00:07 BoogieIcfgContainer [2018-11-07 05:00:07,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 05:00:07,731 INFO L168 Benchmark]: Toolchain (without parser) took 4238.73 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 683.1 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -543.3 MB). Peak memory consumption was 139.8 MB. Max. memory is 7.1 GB. [2018-11-07 05:00:07,735 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 05:00:07,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.91 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 05:00:07,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.65 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 05:00:07,737 INFO L168 Benchmark]: Boogie Preprocessor took 26.78 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 05:00:07,739 INFO L168 Benchmark]: RCFGBuilder took 454.35 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 683.1 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -723.3 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2018-11-07 05:00:07,740 INFO L168 Benchmark]: TraceAbstraction took 3423.21 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 169.4 MB). Peak memory consumption was 169.4 MB. Max. memory is 7.1 GB. [2018-11-07 05:00:07,747 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.91 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 23.65 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 26.78 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 454.35 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 683.1 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -723.3 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3423.21 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 169.4 MB). Peak memory consumption was 169.4 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_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,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 [2018-11-07 05:00:07,767 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,767 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,767 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,768 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,768 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-07 05:00:07,771 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,771 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,771 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,771 WARN L387 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_11,QUANTIFIED] [2018-11-07 05:00:07,772 WARN L1239 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: i == 0 || (\exists v_main_~i~0_11 : int :: (i <= v_main_~i~0_11 + 1 && v_main_~i~0_11 < 1024) && v_main_~i~0_11 == unknown-#memory_int-unknown[A][4 * v_main_~i~0_11 + A]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 1 error locations. SAFE Result, 3.3s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 64 SDtfs, 13 SDslu, 88 SDs, 0 SdLazy, 67 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.4s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 10 PreInvPairs, 13 NumberOfFragments, 77 HoareAnnotationTreeSize, 10 FomulaSimplifications, 25 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 107 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 139 ConstructedInterpolants, 3 QuantifiedInterpolants, 7409 SizeOfPredicates, 10 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 16/30 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...