java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_exp_cong.epf -i ../../../trunk/examples/programs/toy/nonlinear/ConstantValue-Safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 17:02:06,833 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 17:02:06,835 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 17:02:06,849 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 17:02:06,849 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 17:02:06,851 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 17:02:06,855 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 17:02:06,858 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 17:02:06,860 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 17:02:06,861 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 17:02:06,864 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 17:02:06,864 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 17:02:06,871 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 17:02:06,872 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 17:02:06,877 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 17:02:06,877 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 17:02:06,878 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 17:02:06,880 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 17:02:06,882 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 17:02:06,885 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 17:02:06,886 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 17:02:06,889 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 17:02:06,892 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-03 17:02:06,893 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-03 17:02:06,893 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-03 17:02:06,895 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-03 17:02:06,896 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-03 17:02:06,897 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-03 17:02:06,898 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-03 17:02:06,902 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-03 17:02:06,902 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-03 17:02:06,904 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-12-03 17:02:06,907 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_exp_cong.epf [2018-12-03 17:02:06,934 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 17:02:06,934 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 17:02:06,935 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 17:02:06,935 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 17:02:06,935 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 17:02:06,936 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 17:02:06,938 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 17:02:06,938 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 17:02:06,938 INFO L133 SettingsManager]: * Explicit value domain=true [2018-12-03 17:02:06,939 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 17:02:06,939 INFO L133 SettingsManager]: * Octagon Domain=false [2018-12-03 17:02:06,939 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 17:02:06,939 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 17:02:06,939 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 17:02:06,939 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 17:02:06,940 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 17:02:06,940 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 17:02:06,942 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 17:02:06,942 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 17:02:06,943 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 17:02:06,943 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 17:02:06,943 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 17:02:06,943 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 17:02:06,943 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 17:02:06,943 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 17:02:06,945 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 17:02:06,945 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 17:02:06,945 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 17:02:06,945 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 17:02:06,945 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 17:02:06,946 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 17:02:06,946 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 17:02:06,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 17:02:06,946 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 17:02:06,946 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 17:02:06,947 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 17:02:06,947 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 17:02:06,947 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 17:02:06,947 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 17:02:06,947 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 17:02:06,947 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 17:02:06,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 17:02:07,014 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 17:02:07,019 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 17:02:07,020 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 17:02:07,020 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 17:02:07,021 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/ConstantValue-Safe.bpl [2018-12-03 17:02:07,021 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/ConstantValue-Safe.bpl' [2018-12-03 17:02:07,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 17:02:07,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 17:02:07,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 17:02:07,054 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 17:02:07,054 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 17:02:07,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:02:07" (1/1) ... [2018-12-03 17:02:07,081 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:02:07" (1/1) ... [2018-12-03 17:02:07,087 WARN L165 Inliner]: Program contained no entry procedure! [2018-12-03 17:02:07,087 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-12-03 17:02:07,088 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-12-03 17:02:07,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 17:02:07,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 17:02:07,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 17:02:07,091 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 17:02:07,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:02:07" (1/1) ... [2018-12-03 17:02:07,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:02:07" (1/1) ... [2018-12-03 17:02:07,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:02:07" (1/1) ... [2018-12-03 17:02:07,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:02:07" (1/1) ... [2018-12-03 17:02:07,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:02:07" (1/1) ... [2018-12-03 17:02:07,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:02:07" (1/1) ... [2018-12-03 17:02:07,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:02:07" (1/1) ... [2018-12-03 17:02:07,112 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 17:02:07,113 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 17:02:07,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 17:02:07,113 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 17:02:07,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:02:07" (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 [2018-12-03 17:02:07,185 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-12-03 17:02:07,186 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 17:02:07,186 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 17:02:07,387 INFO L272 CfgBuilder]: Using library mode [2018-12-03 17:02:07,387 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 17:02:07,387 INFO L202 PluginConnector]: Adding new model ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:02:07 BoogieIcfgContainer [2018-12-03 17:02:07,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 17:02:07,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 17:02:07,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 17:02:07,392 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 17:02:07,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 05:02:07" (1/2) ... [2018-12-03 17:02:07,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2987af90 and model type ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:02:07, skipping insertion in model container [2018-12-03 17:02:07,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:02:07" (2/2) ... [2018-12-03 17:02:07,396 INFO L112 eAbstractionObserver]: Analyzing ICFG ConstantValue-Safe.bpl [2018-12-03 17:02:07,407 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 17:02:07,415 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 17:02:07,434 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 17:02:07,472 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 17:02:07,472 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 17:02:07,472 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 17:02:07,473 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 17:02:07,473 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 17:02:07,473 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 17:02:07,473 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 17:02:07,473 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 17:02:07,490 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-12-03 17:02:07,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-03 17:02:07,499 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:02:07,500 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2018-12-03 17:02:07,503 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:02:07,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:02:07,518 INFO L82 PathProgramCache]: Analyzing trace with hash 967, now seen corresponding path program 1 times [2018-12-03 17:02:07,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:02:07,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:02:07,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:02:07,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:02:07,575 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:02:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:02:07,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 17:02:07,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 17:02:07,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-03 17:02:07,661 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 17:02:07,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 17:02:07,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 17:02:07,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 17:02:07,680 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-12-03 17:02:07,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:02:07,746 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2018-12-03 17:02:07,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 17:02:07,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-03 17:02:07,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:02:07,760 INFO L225 Difference]: With dead ends: 7 [2018-12-03 17:02:07,760 INFO L226 Difference]: Without dead ends: 4 [2018-12-03 17:02:07,764 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 17:02:07,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states. [2018-12-03 17:02:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2018-12-03 17:02:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-03 17:02:07,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2018-12-03 17:02:07,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states and 4 transitions. Word has length 2 [2018-12-03 17:02:07,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:02:07,802 INFO L480 AbstractCegarLoop]: Abstraction has 4 states and 4 transitions. [2018-12-03 17:02:07,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 17:02:07,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 4 transitions. [2018-12-03 17:02:07,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 17:02:07,803 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 17:02:07,803 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 17:02:07,803 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 17:02:07,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:02:07,804 INFO L82 PathProgramCache]: Analyzing trace with hash 29921, now seen corresponding path program 1 times [2018-12-03 17:02:07,804 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 17:02:07,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:02:07,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:02:07,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 17:02:07,805 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 17:02:07,809 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 17:02:07,809 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 17:02:07,810 INFO L169 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-12-03 17:02:07,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:02:07,829 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 17:02:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:02:07,869 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2018-12-03 17:02:07,871 INFO L205 CegarAbsIntRunner]: [0], [4], [6] [2018-12-03 17:02:07,909 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 17:02:07,909 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 17:02:07,993 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-12-03 17:02:07,994 INFO L272 AbstractInterpreter]: Visited 3 different actions 3 times. Never merged. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 0 variables. [2018-12-03 17:02:08,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 17:02:08,040 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-12-03 17:02:08,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-03 17:02:08,040 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 [2018-12-03 17:02:08,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 17:02:08,075 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-12-03 17:02:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 17:02:08,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-03 17:02:08,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 17:02:08,266 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-12-03 17:02:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-03 17:02:08,346 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-03 17:02:08,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2018-12-03 17:02:08,347 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-12-03 17:02:08,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-03 17:02:08,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-03 17:02:08,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-12-03 17:02:08,349 INFO L87 Difference]: Start difference. First operand 4 states and 4 transitions. Second operand 6 states. [2018-12-03 17:02:08,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 17:02:08,375 INFO L93 Difference]: Finished difference Result 4 states and 4 transitions. [2018-12-03 17:02:08,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 17:02:08,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 3 [2018-12-03 17:02:08,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 17:02:08,377 INFO L225 Difference]: With dead ends: 4 [2018-12-03 17:02:08,377 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 17:02:08,378 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-12-03 17:02:08,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 17:02:08,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 17:02:08,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 17:02:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 17:02:08,380 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2018-12-03 17:02:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 17:02:08,380 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 17:02:08,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-03 17:02:08,380 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 17:02:08,381 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 17:02:08,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 17:02:08,422 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONASSERT(line 21) no Hoare annotation was computed. [2018-12-03 17:02:08,422 INFO L444 ceAbstractionStarter]: At program point L17-1(lines 17 20) the Hoare annotation is: (and (<= 0 main_y) (<= 0 main_x)) [2018-12-03 17:02:08,423 INFO L448 ceAbstractionStarter]: For program point mainENTRY(lines 10 22) no Hoare annotation was computed. [2018-12-03 17:02:08,423 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 22) no Hoare annotation was computed. [2018-12-03 17:02:08,423 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 22) no Hoare annotation was computed. [2018-12-03 17:02:08,432 INFO L202 PluginConnector]: Adding new model ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:02:08 BoogieIcfgContainer [2018-12-03 17:02:08,433 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 17:02:08,433 INFO L168 Benchmark]: Toolchain (without parser) took 1382.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 76.6 MB). Peak memory consumption was 76.6 MB. Max. memory is 7.1 GB. [2018-12-03 17:02:08,435 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 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. [2018-12-03 17:02:08,436 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.03 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. [2018-12-03 17:02:08,437 INFO L168 Benchmark]: Boogie Preprocessor took 21.83 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. [2018-12-03 17:02:08,438 INFO L168 Benchmark]: RCFGBuilder took 274.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-12-03 17:02:08,439 INFO L168 Benchmark]: TraceAbstraction took 1044.27 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-12-03 17:02:08,443 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.18 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. * Boogie Procedure Inliner took 37.03 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. * Boogie Preprocessor took 21.83 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. * RCFGBuilder took 274.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1044.27 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 <= y && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 5 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 7 HoareAnnotationTreeSize, 1 FomulaSimplifications, 13 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 5 ConstructedInterpolants, 2 QuantifiedInterpolants, 73 SizeOfPredicates, 1 NumberOfNonLiveVariables, 7 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...