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_oct_cong.epf -i ../../../trunk/examples/programs/toy/nonlinear/ConstantValue-Safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c78c21b [2018-12-03 18:19:48,141 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-03 18:19:48,143 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-03 18:19:48,155 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-03 18:19:48,156 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-03 18:19:48,157 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-03 18:19:48,158 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-03 18:19:48,160 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-03 18:19:48,163 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-03 18:19:48,164 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-03 18:19:48,167 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-03 18:19:48,167 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-03 18:19:48,168 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-03 18:19:48,169 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-03 18:19:48,172 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-03 18:19:48,173 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-03 18:19:48,174 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-03 18:19:48,177 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-03 18:19:48,181 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-03 18:19:48,184 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-03 18:19:48,185 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-03 18:19:48,189 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-03 18:19:48,191 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-12-03 18:19:48,204 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_compound_oct_cong.epf [2018-12-03 18:19:48,226 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-03 18:19:48,226 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-03 18:19:48,229 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2018-12-03 18:19:48,229 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2018-12-03 18:19:48,229 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-03 18:19:48,230 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-03 18:19:48,230 INFO L133 SettingsManager]: * User list type=DISABLED [2018-12-03 18:19:48,230 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-12-03 18:19:48,230 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-12-03 18:19:48,231 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2018-12-03 18:19:48,231 INFO L133 SettingsManager]: * Log string format=TERM [2018-12-03 18:19:48,231 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-12-03 18:19:48,231 INFO L133 SettingsManager]: * Interval Domain=false [2018-12-03 18:19:48,233 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-03 18:19:48,233 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-03 18:19:48,233 INFO L133 SettingsManager]: * Use SBE=true [2018-12-03 18:19:48,233 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-03 18:19:48,234 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-03 18:19:48,234 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-03 18:19:48,234 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-03 18:19:48,234 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-03 18:19:48,234 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-03 18:19:48,235 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-03 18:19:48,237 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-03 18:19:48,237 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-03 18:19:48,237 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-03 18:19:48,237 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-03 18:19:48,238 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-03 18:19:48,238 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-03 18:19:48,238 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-03 18:19:48,238 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-03 18:19:48,238 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-03 18:19:48,239 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-03 18:19:48,239 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-03 18:19:48,239 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-12-03 18:19:48,239 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-03 18:19:48,239 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-03 18:19:48,240 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-12-03 18:19:48,240 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-12-03 18:19:48,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-03 18:19:48,284 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-03 18:19:48,288 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-03 18:19:48,289 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-12-03 18:19:48,289 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-12-03 18:19:48,290 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/ConstantValue-Safe.bpl [2018-12-03 18:19:48,290 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/ConstantValue-Safe.bpl' [2018-12-03 18:19:48,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-03 18:19:48,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-12-03 18:19:48,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-03 18:19:48,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-03 18:19:48,321 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-03 18:19:48,338 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 06:19:48" (1/1) ... [2018-12-03 18:19:48,350 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 06:19:48" (1/1) ... [2018-12-03 18:19:48,358 WARN L165 Inliner]: Program contained no entry procedure! [2018-12-03 18:19:48,358 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-12-03 18:19:48,358 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-12-03 18:19:48,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-03 18:19:48,361 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-03 18:19:48,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-03 18:19:48,362 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-03 18:19:48,374 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 06:19:48" (1/1) ... [2018-12-03 18:19:48,374 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 06:19:48" (1/1) ... [2018-12-03 18:19:48,374 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 06:19:48" (1/1) ... [2018-12-03 18:19:48,375 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 06:19:48" (1/1) ... [2018-12-03 18:19:48,377 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 06:19:48" (1/1) ... [2018-12-03 18:19:48,380 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 06:19:48" (1/1) ... [2018-12-03 18:19:48,381 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 06:19:48" (1/1) ... [2018-12-03 18:19:48,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-03 18:19:48,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-03 18:19:48,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-03 18:19:48,383 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-03 18:19:48,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:19:48" (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 18:19:48,444 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2018-12-03 18:19:48,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-03 18:19:48,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-03 18:19:48,654 INFO L272 CfgBuilder]: Using library mode [2018-12-03 18:19:48,654 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-12-03 18:19:48,655 INFO L202 PluginConnector]: Adding new model ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 06:19:48 BoogieIcfgContainer [2018-12-03 18:19:48,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-03 18:19:48,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-03 18:19:48,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-03 18:19:48,660 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-03 18:19:48,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.12 06:19:48" (1/2) ... [2018-12-03 18:19:48,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4574a5e9 and model type ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 06:19:48, skipping insertion in model container [2018-12-03 18:19:48,662 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 06:19:48" (2/2) ... [2018-12-03 18:19:48,664 INFO L112 eAbstractionObserver]: Analyzing ICFG ConstantValue-Safe.bpl [2018-12-03 18:19:48,675 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-03 18:19:48,683 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-03 18:19:48,703 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-03 18:19:48,739 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-03 18:19:48,739 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-03 18:19:48,740 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-03 18:19:48,740 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-03 18:19:48,740 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-03 18:19:48,740 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-03 18:19:48,740 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-03 18:19:48,741 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-03 18:19:48,757 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2018-12-03 18:19:48,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2018-12-03 18:19:48,770 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:19:48,771 INFO L402 BasicCegarLoop]: trace histogram [1, 1] [2018-12-03 18:19:48,777 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 18:19:48,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:19:48,792 INFO L82 PathProgramCache]: Analyzing trace with hash 967, now seen corresponding path program 1 times [2018-12-03 18:19:48,795 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:19:48,852 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:19:48,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:19:48,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:19:48,853 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:19:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:19:49,016 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 18:19:49,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:19:49,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-03 18:19:49,019 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:19:49,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-12-03 18:19:49,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-03 18:19:49,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-03 18:19:49,043 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2018-12-03 18:19:49,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:19:49,152 INFO L93 Difference]: Finished difference Result 7 states and 8 transitions. [2018-12-03 18:19:49,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 18:19:49,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 2 [2018-12-03 18:19:49,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:19:49,165 INFO L225 Difference]: With dead ends: 7 [2018-12-03 18:19:49,165 INFO L226 Difference]: Without dead ends: 4 [2018-12-03 18:19:49,169 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 18:19:49,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4 states. [2018-12-03 18:19:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4 to 4. [2018-12-03 18:19:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-03 18:19:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 4 transitions. [2018-12-03 18:19:49,205 INFO L78 Accepts]: Start accepts. Automaton has 4 states and 4 transitions. Word has length 2 [2018-12-03 18:19:49,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:19:49,206 INFO L480 AbstractCegarLoop]: Abstraction has 4 states and 4 transitions. [2018-12-03 18:19:49,206 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-12-03 18:19:49,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4 states and 4 transitions. [2018-12-03 18:19:49,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-12-03 18:19:49,207 INFO L394 BasicCegarLoop]: Found error trace [2018-12-03 18:19:49,207 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-12-03 18:19:49,207 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]=== [2018-12-03 18:19:49,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:19:49,208 INFO L82 PathProgramCache]: Analyzing trace with hash 29921, now seen corresponding path program 1 times [2018-12-03 18:19:49,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-12-03 18:19:49,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:19:49,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:19:49,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-03 18:19:49,209 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-12-03 18:19:49,213 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-12-03 18:19:49,214 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-12-03 18:19:49,214 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 18:19:49,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-03 18:19:49,232 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-12-03 18:19:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-03 18:19:49,276 INFO L203 CegarAbsIntRunner]: Running AI on error trace of length 4 with the following transitions: [2018-12-03 18:19:49,278 INFO L205 CegarAbsIntRunner]: [0], [4], [6] [2018-12-03 18:19:49,336 INFO L148 AbstractInterpreter]: Using domain ArrayDomain [2018-12-03 18:19:49,336 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2018-12-03 18:19:49,429 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-12-03 18:19:49,432 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 18:19:49,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-03 18:19:49,484 INFO L401 sIntCurrentIteration]: Generating AbsInt predicates [2018-12-03 18:19:49,521 INFO L227 lantSequenceWeakener]: Weakened 1 states. On average, predicates are now at 50% of their original sizes. [2018-12-03 18:19:49,521 INFO L416 sIntCurrentIteration]: Unifying AI predicates [2018-12-03 18:19:49,553 INFO L418 sIntCurrentIteration]: We unified 2 AI predicates to 2 [2018-12-03 18:19:49,554 INFO L427 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-12-03 18:19:49,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-03 18:19:49,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-03 18:19:49,555 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-12-03 18:19:49,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-03 18:19:49,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-03 18:19:49,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-03 18:19:49,557 INFO L87 Difference]: Start difference. First operand 4 states and 4 transitions. Second operand 4 states. [2018-12-03 18:19:49,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-03 18:19:49,577 INFO L93 Difference]: Finished difference Result 4 states and 4 transitions. [2018-12-03 18:19:49,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-03 18:19:49,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 3 [2018-12-03 18:19:49,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-03 18:19:49,578 INFO L225 Difference]: With dead ends: 4 [2018-12-03 18:19:49,578 INFO L226 Difference]: Without dead ends: 0 [2018-12-03 18:19:49,585 INFO L631 BasicCegarLoop]: 2 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-03 18:19:49,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-03 18:19:49,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-03 18:19:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-03 18:19:49,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-03 18:19:49,587 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2018-12-03 18:19:49,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-03 18:19:49,587 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-03 18:19:49,587 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-03 18:19:49,587 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-03 18:19:49,587 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-03 18:19:49,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-03 18:19:49,749 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-12-03 18:19:49,753 INFO L444 ceAbstractionStarter]: At program point L17-1(lines 17 20) the Hoare annotation is: (and (<= 0 (* 2 main_x)) (<= 0 (* 2 main_y))) [2018-12-03 18:19:49,753 INFO L448 ceAbstractionStarter]: For program point mainENTRY(lines 10 22) no Hoare annotation was computed. [2018-12-03 18:19:49,753 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONASSERT(line 21) no Hoare annotation was computed. [2018-12-03 18:19:49,754 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 10 22) no Hoare annotation was computed. [2018-12-03 18:19:49,754 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 10 22) no Hoare annotation was computed. [2018-12-03 18:19:49,760 INFO L202 PluginConnector]: Adding new model ConstantValue-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 06:19:49 BoogieIcfgContainer [2018-12-03 18:19:49,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-03 18:19:49,762 INFO L168 Benchmark]: Toolchain (without parser) took 1442.49 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-12-03 18:19:49,763 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 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 18:19:49,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.92 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 18:19:49,765 INFO L168 Benchmark]: Boogie Preprocessor took 21.42 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 18:19:49,766 INFO L168 Benchmark]: RCFGBuilder took 272.21 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 18:19:49,767 INFO L168 Benchmark]: TraceAbstraction took 1104.85 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: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2018-12-03 18:19:49,771 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 0.16 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 39.92 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 21.42 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 272.21 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 1104.85 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: 44.9 MB). Peak memory consumption was 44.9 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 <= 2 * x && 0 <= 2 * y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 5 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 2 SDslu, 0 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.0 AbsIntAvgWeakeningVarsNumRemoved, 1.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 11 HoareAnnotationTreeSize, 1 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 1 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...