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/20170319-ConjunctivePathPrograms/half.i_3.bplTransformedIcfg_BEv2_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-00a8621 [2018-09-30 10:47:00,629 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 10:47:00,631 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 10:47:00,643 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 10:47:00,643 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 10:47:00,645 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 10:47:00,646 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 10:47:00,648 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 10:47:00,650 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 10:47:00,650 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 10:47:00,651 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 10:47:00,676 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 [2018-09-30 10:47:00,691 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 10:47:00,691 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 10:47:00,692 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 10:47:00,692 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 10:47:00,693 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 10:47:00,693 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 10:47:00,693 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 10:47:00,694 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 10:47:00,694 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 10:47:00,694 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 10:47:00,694 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 10:47:00,694 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 10:47:00,695 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 10:47:00,695 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 10:47:00,695 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 10:47:00,695 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 10:47:00,695 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 10:47:00,696 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 10:47:00,696 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 10:47:00,696 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 10:47:00,696 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 10:47:00,696 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 10:47:00,697 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:47:00,697 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 10:47:00,697 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 10:47:00,697 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 10:47:00,697 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 10:47:00,697 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 10:47:00,698 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 10:47:00,698 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 10:47:00,698 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 10:47:00,742 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 10:47:00,755 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 10:47:00,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 10:47:00,761 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 10:47:00,761 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 10:47:00,762 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/half.i_3.bplTransformedIcfg_BEv2_4.bpl [2018-09-30 10:47:00,762 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/half.i_3.bplTransformedIcfg_BEv2_4.bpl' [2018-09-30 10:47:00,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 10:47:00,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 10:47:00,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 10:47:00,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 10:47:00,819 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 10:47:00,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:47:00" (1/1) ... [2018-09-30 10:47:00,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:47:00" (1/1) ... [2018-09-30 10:47:00,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 10:47:00,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 10:47:00,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 10:47:00,862 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 10:47:00,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:47:00" (1/1) ... [2018-09-30 10:47:00,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:47:00" (1/1) ... [2018-09-30 10:47:00,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:47:00" (1/1) ... [2018-09-30 10:47:00,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:47:00" (1/1) ... [2018-09-30 10:47:00,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:47:00" (1/1) ... [2018-09-30 10:47:00,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:47:00" (1/1) ... [2018-09-30 10:47:00,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:47:00" (1/1) ... [2018-09-30 10:47:00,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 10:47:00,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 10:47:00,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 10:47:00,883 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 10:47:00,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:47:00" (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 [2018-09-30 10:47:00,960 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-30 10:47:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-30 10:47:00,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-30 10:47:01,128 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-30 10:47:01,129 INFO L202 PluginConnector]: Adding new model half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:47:01 BoogieIcfgContainer [2018-09-30 10:47:01,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 10:47:01,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 10:47:01,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 10:47:01,134 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 10:47:01,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:47:00" (1/2) ... [2018-09-30 10:47:01,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6522f4e5 and model type half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:47:01, skipping insertion in model container [2018-09-30 10:47:01,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:47:01" (2/2) ... [2018-09-30 10:47:01,137 INFO L112 eAbstractionObserver]: Analyzing ICFG half.i_3.bplTransformedIcfg_BEv2_4.bpl [2018-09-30 10:47:01,147 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 10:47:01,155 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 10:47:01,207 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 10:47:01,207 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 10:47:01,208 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 10:47:01,208 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 10:47:01,208 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 10:47:01,208 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 10:47:01,208 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 10:47:01,209 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 10:47:01,209 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 10:47:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-30 10:47:01,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-09-30 10:47:01,231 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:01,232 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-09-30 10:47:01,233 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:01,241 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:01,242 INFO L82 PathProgramCache]: Analyzing trace with hash 29955, now seen corresponding path program 1 times [2018-09-30 10:47:01,244 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:01,245 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:01,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:01,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:01,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:01,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:01,431 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:47:01,431 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:47:01,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:47:01,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:47:01,448 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:01,450 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-30 10:47:01,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:01,581 INFO L93 Difference]: Finished difference Result 9 states and 10 transitions. [2018-09-30 10:47:01,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:47:01,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2018-09-30 10:47:01,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:01,597 INFO L225 Difference]: With dead ends: 9 [2018-09-30 10:47:01,597 INFO L226 Difference]: Without dead ends: 5 [2018-09-30 10:47:01,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2018-09-30 10:47:01,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-09-30 10:47:01,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-09-30 10:47:01,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-09-30 10:47:01,639 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2018-09-30 10:47:01,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:01,640 INFO L480 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-09-30 10:47:01,640 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:47:01,640 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2018-09-30 10:47:01,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-30 10:47:01,641 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:47:01,641 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-30 10:47:01,641 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:47:01,641 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:47:01,642 INFO L82 PathProgramCache]: Analyzing trace with hash 930412, now seen corresponding path program 1 times [2018-09-30 10:47:01,642 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:47:01,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:47:01,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:01,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:01,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:47:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:01,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:01,775 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:47:01,775 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 -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:47:01,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:47:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:47:01,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:47:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:47:01,975 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:47:01,975 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2018-09-30 10:47:01,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-30 10:47:01,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-30 10:47:01,976 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:47:01,976 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 5 states. [2018-09-30 10:47:02,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:47:02,201 INFO L93 Difference]: Finished difference Result 6 states and 7 transitions. [2018-09-30 10:47:02,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:47:02,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2018-09-30 10:47:02,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:47:02,203 INFO L225 Difference]: With dead ends: 6 [2018-09-30 10:47:02,203 INFO L226 Difference]: Without dead ends: 0 [2018-09-30 10:47:02,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:47:02,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-30 10:47:02,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-30 10:47:02,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-30 10:47:02,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-30 10:47:02,207 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2018-09-30 10:47:02,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:47:02,207 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-30 10:47:02,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-30 10:47:02,207 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-30 10:47:02,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-30 10:47:02,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-30 10:47:02,342 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2018-09-30 10:47:02,349 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 49) no Hoare annotation was computed. [2018-09-30 10:47:02,350 INFO L422 ceAbstractionStarter]: At program point L46(lines 24 46) the Hoare annotation is: (or (and (< 0 (* 2 ULTIMATE.start_main_~k~5)) (<= ULTIMATE.start_main_~i~5 1)) (and (<= 0 ULTIMATE.start_main_~n~5) (= ULTIMATE.start_main_~i~5 0) (<= ULTIMATE.start_main_~n~5 0))) [2018-09-30 10:47:02,350 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 49) no Hoare annotation was computed. [2018-09-30 10:47:02,350 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 49) no Hoare annotation was computed. [2018-09-30 10:47:02,350 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 48) no Hoare annotation was computed. [2018-09-30 10:47:02,350 INFO L422 ceAbstractionStarter]: At program point L36(lines 36 47) the Hoare annotation is: false [2018-09-30 10:47:02,361 INFO L202 PluginConnector]: Adding new model half.i_3.bplTransformedIcfg_BEv2_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 10:47:02 BoogieIcfgContainer [2018-09-30 10:47:02,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 10:47:02,362 INFO L168 Benchmark]: Toolchain (without parser) took 1548.09 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. [2018-09-30 10:47:02,364 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 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. [2018-09-30 10:47:02,365 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.74 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. [2018-09-30 10:47:02,366 INFO L168 Benchmark]: Boogie Preprocessor took 20.98 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. [2018-09-30 10:47:02,367 INFO L168 Benchmark]: RCFGBuilder took 246.68 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-09-30 10:47:02,368 INFO L168 Benchmark]: TraceAbstraction took 1231.39 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. [2018-09-30 10:47:02,373 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 0.24 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 42.74 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 20.98 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 246.68 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1231.39 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: 48]: 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: 24]: Loop Invariant Derived loop invariant: (0 < 2 * main_~k~5 && main_~i~5 <= 1) || ((0 <= main_~n~5 && main_~i~5 == 0) && main_~n~5 <= 0) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: false - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 4 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 21 HoareAnnotationTreeSize, 2 FomulaSimplifications, 40 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 212 SizeOfPredicates, 3 NumberOfNonLiveVariables, 27 ConjunctsInSsa, 9 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! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half.i_3.bplTransformedIcfg_BEv2_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_10-47-02-397.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/half.i_3.bplTransformedIcfg_BEv2_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_10-47-02-397.csv Received shutdown request...