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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/nonlinear/Power1-Safe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f [2018-10-04 12:58:49,515 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 12:58:49,517 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 12:58:49,530 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 12:58:49,530 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 12:58:49,532 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 12:58:49,534 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 12:58:49,536 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 12:58:49,538 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 12:58:49,538 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 12:58:49,540 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-04 12:58:49,541 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-04 12:58:49,542 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-04 12:58:49,543 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-04 12:58:49,546 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-04 12:58:49,547 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-04 12:58:49,548 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-04 12:58:49,550 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-04 12:58:49,552 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-04 12:58:49,553 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-04 12:58:49,554 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-04 12:58:49,555 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-04 12:58:49,558 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-04 12:58:49,571 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf [2018-10-04 12:58:49,600 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 12:58:49,601 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 12:58:49,601 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 12:58:49,602 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 12:58:49,603 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 12:58:49,603 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 12:58:49,603 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 12:58:49,603 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 12:58:49,603 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 12:58:49,604 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 12:58:49,604 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 12:58:49,604 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 12:58:49,604 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 12:58:49,604 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 12:58:49,604 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 12:58:49,605 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 12:58:49,606 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 12:58:49,606 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 12:58:49,606 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 12:58:49,607 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 12:58:49,607 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 12:58:49,607 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 12:58:49,607 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:58:49,608 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 12:58:49,608 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 12:58:49,608 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 12:58:49,608 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 12:58:49,608 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 12:58:49,609 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 12:58:49,609 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 12:58:49,609 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-10-04 12:58:49,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 12:58:49,673 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 12:58:49,677 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 12:58:49,679 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 12:58:49,679 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 12:58:49,680 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Power1-Safe.bpl [2018-10-04 12:58:49,680 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/nonlinear/Power1-Safe.bpl' [2018-10-04 12:58:49,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 12:58:49,727 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 12:58:49,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 12:58:49,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 12:58:49,729 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 12:58:49,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:58:49" (1/1) ... [2018-10-04 12:58:49,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:58:49" (1/1) ... [2018-10-04 12:58:49,766 WARN L165 Inliner]: Program contained no entry procedure! [2018-10-04 12:58:49,767 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2018-10-04 12:58:49,767 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2018-10-04 12:58:49,769 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 12:58:49,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 12:58:49,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 12:58:49,770 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 12:58:49,781 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:58:49" (1/1) ... [2018-10-04 12:58:49,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:58:49" (1/1) ... [2018-10-04 12:58:49,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:58:49" (1/1) ... [2018-10-04 12:58:49,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:58:49" (1/1) ... [2018-10-04 12:58:49,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:58:49" (1/1) ... [2018-10-04 12:58:49,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:58:49" (1/1) ... [2018-10-04 12:58:49,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:58:49" (1/1) ... [2018-10-04 12:58:49,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 12:58:49,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 12:58:49,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 12:58:49,795 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 12:58:49,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:58:49" (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 [2018-10-04 12:58:49,871 INFO L124 BoogieDeclarations]: Specification and implementation of procedure power given in one single declaration [2018-10-04 12:58:49,871 INFO L130 BoogieDeclarations]: Found specification of procedure power [2018-10-04 12:58:49,871 INFO L138 BoogieDeclarations]: Found implementation of procedure power [2018-10-04 12:58:49,939 WARN L632 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-10-04 12:58:50,059 INFO L338 CfgBuilder]: Using library mode [2018-10-04 12:58:50,060 INFO L202 PluginConnector]: Adding new model Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:58:50 BoogieIcfgContainer [2018-10-04 12:58:50,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 12:58:50,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 12:58:50,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 12:58:50,065 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 12:58:50,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:58:49" (1/2) ... [2018-10-04 12:58:50,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ac5b4dc and model type Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:58:50, skipping insertion in model container [2018-10-04 12:58:50,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:58:50" (2/2) ... [2018-10-04 12:58:50,069 INFO L112 eAbstractionObserver]: Analyzing ICFG Power1-Safe.bpl [2018-10-04 12:58:50,079 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 12:58:50,087 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 12:58:50,138 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 12:58:50,139 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 12:58:50,139 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 12:58:50,139 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 12:58:50,140 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 12:58:50,140 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 12:58:50,140 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 12:58:50,140 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 12:58:50,140 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 12:58:50,157 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-10-04 12:58:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 12:58:50,166 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:50,167 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 12:58:50,168 INFO L423 AbstractCegarLoop]: === Iteration 1 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-04 12:58:50,175 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:50,175 INFO L82 PathProgramCache]: Analyzing trace with hash 924708, now seen corresponding path program 1 times [2018-10-04 12:58:50,177 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:50,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:50,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:50,223 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:58:50,223 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:50,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:50,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:58:50,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 12:58:50,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 12:58:50,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 12:58:50,330 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:50,332 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-10-04 12:58:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:50,367 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2018-10-04 12:58:50,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 12:58:50,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-04 12:58:50,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:50,382 INFO L225 Difference]: With dead ends: 10 [2018-10-04 12:58:50,382 INFO L226 Difference]: Without dead ends: 6 [2018-10-04 12:58:50,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1 [2018-10-04 12:58:50,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2018-10-04 12:58:50,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2018-10-04 12:58:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-10-04 12:58:50,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2018-10-04 12:58:50,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2018-10-04 12:58:50,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:50,419 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2018-10-04 12:58:50,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 12:58:50,420 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2018-10-04 12:58:50,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-04 12:58:50,420 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:58:50,420 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-10-04 12:58:50,421 INFO L423 AbstractCegarLoop]: === Iteration 2 === [powerErr0ENSURES_VIOLATIONPOST_CONDITION]=== [2018-10-04 12:58:50,421 INFO L108 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-10-04 12:58:50,421 INFO L82 PathProgramCache]: Analyzing trace with hash 28663973, now seen corresponding path program 1 times [2018-10-04 12:58:50,421 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:58:50,422 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:58:50,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:50,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:58:50,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:58:50,428 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-10-04 12:58:50,428 INFO L258 seRefinementStrategy]: Advancing trace checker [2018-10-04 12:58:50,428 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP 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) [2018-10-04 12:58:50,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-10-04 12:58:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:58:50,481 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:58:50,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:58:50,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-04 12:58:50,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-10-04 12:58:50,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-04 12:58:50,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-04 12:58:50,838 INFO L146 InterpolantAutomaton]: No coverage relation statistics for ImplicationMap [2018-10-04 12:58:50,838 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2018-10-04 12:58:50,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:58:50,965 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2018-10-04 12:58:50,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-04 12:58:50,966 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2018-10-04 12:58:50,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:58:50,967 INFO L225 Difference]: With dead ends: 6 [2018-10-04 12:58:50,967 INFO L226 Difference]: Without dead ends: 0 [2018-10-04 12:58:50,968 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 4 [2018-10-04 12:58:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-04 12:58:50,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-04 12:58:50,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-04 12:58:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-04 12:58:50,969 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2018-10-04 12:58:50,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:58:50,969 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-04 12:58:50,969 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-04 12:58:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-04 12:58:50,970 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-04 12:58:50,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-04 12:58:51,031 INFO L421 ceAbstractionStarter]: At program point L18-1(lines 18 22) the Hoare annotation is: (and (<= 1 power_res) (<= 1 power_a)) [2018-10-04 12:58:51,032 INFO L425 ceAbstractionStarter]: For program point powerErr0ENSURES_VIOLATIONPOST_CONDITION(lines 9 11) no Hoare annotation was computed. [2018-10-04 12:58:51,032 INFO L425 ceAbstractionStarter]: For program point $Ultimate##0(lines 9 24) no Hoare annotation was computed. [2018-10-04 12:58:51,032 INFO L425 ceAbstractionStarter]: For program point powerEXIT(lines 9 24) no Hoare annotation was computed. [2018-10-04 12:58:51,032 INFO L425 ceAbstractionStarter]: For program point powerENTRY(lines 9 24) no Hoare annotation was computed. [2018-10-04 12:58:51,032 INFO L425 ceAbstractionStarter]: For program point powerFINAL(lines 9 24) no Hoare annotation was computed. [2018-10-04 12:58:51,042 INFO L202 PluginConnector]: Adding new model Power1-Safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 12:58:51 BoogieIcfgContainer [2018-10-04 12:58:51,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 12:58:51,043 INFO L168 Benchmark]: Toolchain (without parser) took 1316.90 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-10-04 12:58:51,046 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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. [2018-10-04 12:58:51,047 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.48 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. [2018-10-04 12:58:51,047 INFO L168 Benchmark]: Boogie Preprocessor took 23.84 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. [2018-10-04 12:58:51,048 INFO L168 Benchmark]: RCFGBuilder took 266.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 12:58:51,050 INFO L168 Benchmark]: TraceAbstraction took 980.68 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. [2018-10-04 12:58:51,054 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 0.23 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 41.48 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 23.84 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 266.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 980.68 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: 34.4 MB). Peak memory consumption was 34.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: procedure postcondition always holds For all program executions holds that procedure postcondition always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 <= res && 1 <= a - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7 SDtfs, 3 SDslu, 4 SDs, 0 SdLazy, 8 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 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, 11 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 85 SizeOfPredicates, 1 NumberOfNonLiveVariables, 15 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Power1-Safe.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_12-58-51-068.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Power1-Safe.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_12-58-51-068.csv Received shutdown request...