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/count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-00a8621 [2018-09-30 10:43:23,998 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-30 10:43:24,000 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-30 10:43:24,015 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-30 10:43:24,016 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-30 10:43:24,017 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-30 10:43:24,018 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-30 10:43:24,020 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-30 10:43:24,022 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-30 10:43:24,023 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-30 10:43:24,024 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-30 10:43:24,053 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 10:43:24,069 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-30 10:43:24,069 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-30 10:43:24,070 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-30 10:43:24,070 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-30 10:43:24,073 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-30 10:43:24,073 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-30 10:43:24,074 INFO L133 SettingsManager]: * Use SBE=true [2018-09-30 10:43:24,074 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-30 10:43:24,074 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-30 10:43:24,074 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-30 10:43:24,075 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-30 10:43:24,076 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-30 10:43:24,076 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-30 10:43:24,076 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-30 10:43:24,076 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-30 10:43:24,076 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-30 10:43:24,077 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-30 10:43:24,077 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-30 10:43:24,077 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-30 10:43:24,077 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-30 10:43:24,079 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-30 10:43:24,079 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-30 10:43:24,079 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-30 10:43:24,079 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-30 10:43:24,079 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-30 10:43:24,080 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-30 10:43:24,080 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-30 10:43:24,080 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-30 10:43:24,080 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-30 10:43:24,080 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-30 10:43:24,081 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true [2018-09-30 10:43:24,144 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-30 10:43:24,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-30 10:43:24,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-30 10:43:24,164 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-30 10:43:24,165 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-30 10:43:24,166 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl [2018-09-30 10:43:24,166 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl' [2018-09-30 10:43:24,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-30 10:43:24,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-30 10:43:24,231 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-30 10:43:24,232 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-30 10:43:24,232 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-30 10:43:24,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:43:24" (1/1) ... [2018-09-30 10:43:24,267 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:43:24" (1/1) ... [2018-09-30 10:43:24,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-30 10:43:24,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-30 10:43:24,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-30 10:43:24,277 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-30 10:43:24,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:43:24" (1/1) ... [2018-09-30 10:43:24,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:43:24" (1/1) ... [2018-09-30 10:43:24,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:43:24" (1/1) ... [2018-09-30 10:43:24,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:43:24" (1/1) ... [2018-09-30 10:43:24,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:43:24" (1/1) ... [2018-09-30 10:43:24,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:43:24" (1/1) ... [2018-09-30 10:43:24,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:43:24" (1/1) ... [2018-09-30 10:43:24,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-30 10:43:24,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-30 10:43:24,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-30 10:43:24,302 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-30 10:43:24,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:43:24" (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 10:43:24,383 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-09-30 10:43:24,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-30 10:43:24,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-30 10:43:24,629 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-30 10:43:24,630 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:43:24 BoogieIcfgContainer [2018-09-30 10:43:24,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-30 10:43:24,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-30 10:43:24,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-30 10:43:24,635 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-30 10:43:24,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:43:24" (1/2) ... [2018-09-30 10:43:24,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b20d62 and model type count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:43:24, skipping insertion in model container [2018-09-30 10:43:24,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:43:24" (2/2) ... [2018-09-30 10:43:24,639 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl [2018-09-30 10:43:24,648 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-30 10:43:24,657 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-30 10:43:24,708 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-30 10:43:24,709 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-30 10:43:24,709 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-30 10:43:24,710 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-30 10:43:24,710 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-30 10:43:24,710 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-30 10:43:24,710 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-30 10:43:24,710 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-30 10:43:24,711 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-30 10:43:24,726 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2018-09-30 10:43:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 10:43:24,733 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:24,734 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-30 10:43:24,735 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:24,743 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:24,744 INFO L82 PathProgramCache]: Analyzing trace with hash 889539593, now seen corresponding path program 1 times [2018-09-30 10:43:24,746 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:24,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:24,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:24,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:24,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:24,983 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 10:43:24,988 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:43:24,989 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-30 10:43:24,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 10:43:25,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 10:43:25,042 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:25,049 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2018-09-30 10:43:25,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:25,278 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2018-09-30 10:43:25,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-30 10:43:25,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-09-30 10:43:25,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:25,292 INFO L225 Difference]: With dead ends: 17 [2018-09-30 10:43:25,293 INFO L226 Difference]: Without dead ends: 13 [2018-09-30 10:43:25,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:25,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-30 10:43:25,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 9. [2018-09-30 10:43:25,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-30 10:43:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-09-30 10:43:25,332 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-09-30 10:43:25,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:25,333 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-09-30 10:43:25,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 10:43:25,333 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-09-30 10:43:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-30 10:43:25,333 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:25,334 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-09-30 10:43:25,334 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:25,334 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:25,335 INFO L82 PathProgramCache]: Analyzing trace with hash 889599175, now seen corresponding path program 1 times [2018-09-30 10:43:25,335 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:25,335 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:25,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:25,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:25,336 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:25,356 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 10:43:25,356 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-30 10:43:25,356 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-30 10:43:25,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-30 10:43:25,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-30 10:43:25,359 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:25,359 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 3 states. [2018-09-30 10:43:25,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:25,421 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2018-09-30 10:43:25,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-30 10:43:25,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-09-30 10:43:25,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:25,422 INFO L225 Difference]: With dead ends: 21 [2018-09-30 10:43:25,423 INFO L226 Difference]: Without dead ends: 13 [2018-09-30 10:43:25,424 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 10:43:25,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-30 10:43:25,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-09-30 10:43:25,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-30 10:43:25,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-09-30 10:43:25,428 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2018-09-30 10:43:25,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:25,429 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-09-30 10:43:25,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-30 10:43:25,429 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-09-30 10:43:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-30 10:43:25,430 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:25,430 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-09-30 10:43:25,430 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:25,430 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:25,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1438040255, now seen corresponding path program 1 times [2018-09-30 10:43:25,431 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:25,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:25,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:25,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:25,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:25,483 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:25,483 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 10:43:25,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:25,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:25,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:25,725 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:25,725 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-09-30 10:43:25,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-30 10:43:25,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-30 10:43:25,726 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:25,726 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-09-30 10:43:25,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:25,997 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2018-09-30 10:43:25,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-30 10:43:25,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-09-30 10:43:25,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:25,999 INFO L225 Difference]: With dead ends: 25 [2018-09-30 10:43:25,999 INFO L226 Difference]: Without dead ends: 17 [2018-09-30 10:43:26,000 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-30 10:43:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2018-09-30 10:43:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-30 10:43:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-09-30 10:43:26,006 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2018-09-30 10:43:26,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:26,007 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2018-09-30 10:43:26,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-30 10:43:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2018-09-30 10:43:26,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-30 10:43:26,008 INFO L367 BasicCegarLoop]: Found error trace [2018-09-30 10:43:26,008 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2018-09-30 10:43:26,009 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-30 10:43:26,009 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier [2018-09-30 10:43:26,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1389400247, now seen corresponding path program 2 times [2018-09-30 10:43:26,009 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-30 10:43:26,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-30 10:43:26,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:26,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-30 10:43:26,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-30 10:43:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-30 10:43:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-09-30 10:43:26,084 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-30 10:43:26,084 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-30 10:43:26,100 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-30 10:43:26,124 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-30 10:43:26,125 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-30 10:43:26,127 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-30 10:43:26,333 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-30 10:43:26,367 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-30 10:43:26,367 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-09-30 10:43:26,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-30 10:43:26,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-30 10:43:26,370 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker [2018-09-30 10:43:26,370 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-09-30 10:43:26,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-30 10:43:26,565 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2018-09-30 10:43:26,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-30 10:43:26,565 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-09-30 10:43:26,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-30 10:43:26,566 INFO L225 Difference]: With dead ends: 26 [2018-09-30 10:43:26,566 INFO L226 Difference]: Without dead ends: 0 [2018-09-30 10:43:26,566 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time [2018-09-30 10:43:26,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-30 10:43:26,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-30 10:43:26,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-30 10:43:26,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-30 10:43:26,567 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-09-30 10:43:26,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-30 10:43:26,567 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-30 10:43:26,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-30 10:43:26,568 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-30 10:43:26,568 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-30 10:43:26,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-30 10:43:26,923 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 10 [2018-09-30 10:43:27,130 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 3 [2018-09-30 10:43:27,133 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 46) no Hoare annotation was computed. [2018-09-30 10:43:27,134 INFO L422 ceAbstractionStarter]: At program point L32(lines 32 41) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~4 999999) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~cond|)) [2018-09-30 10:43:27,134 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 46) no Hoare annotation was computed. [2018-09-30 10:43:27,134 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 46) no Hoare annotation was computed. [2018-09-30 10:43:27,134 INFO L422 ceAbstractionStarter]: At program point L28(lines 24 29) the Hoare annotation is: (and (<= ULTIMATE.start_main_~i~4 999999) (<= 1 |ULTIMATE.start___VERIFIER_assert_#in~cond|)) [2018-09-30 10:43:27,134 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 45) no Hoare annotation was computed. [2018-09-30 10:43:27,135 INFO L422 ceAbstractionStarter]: At program point L18(lines 18 25) the Hoare annotation is: (<= ULTIMATE.start_main_~i~4 999999) [2018-09-30 10:43:27,135 INFO L422 ceAbstractionStarter]: At program point L43(lines 43 44) the Hoare annotation is: false [2018-09-30 10:43:27,135 INFO L422 ceAbstractionStarter]: At program point L40(lines 15 40) the Hoare annotation is: (<= ULTIMATE.start_main_~i~4 1000000) [2018-09-30 10:43:27,148 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 10:43:27 BoogieIcfgContainer [2018-09-30 10:43:27,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-30 10:43:27,149 INFO L168 Benchmark]: Toolchain (without parser) took 2922.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 119.0 MB). Peak memory consumption was 119.0 MB. Max. memory is 7.1 GB. [2018-09-30 10:43:27,151 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. [2018-09-30 10:43:27,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.07 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 10:43:27,153 INFO L168 Benchmark]: Boogie Preprocessor took 25.42 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. [2018-09-30 10:43:27,154 INFO L168 Benchmark]: RCFGBuilder took 328.30 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 10:43:27,155 INFO L168 Benchmark]: TraceAbstraction took 2517.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. [2018-09-30 10:43:27,160 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 44.07 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 25.42 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 328.30 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 2517.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 97.8 MB). Peak memory consumption was 97.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: 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: 32]: Loop Invariant Derived loop invariant: (1 <= __VERIFIER_assert_~cond && main_~i~4 <= 999999) && 1 <= __VERIFIER_assert_#in~cond - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: main_~i~4 <= 999999 && 1 <= __VERIFIER_assert_#in~cond - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: main_~i~4 <= 999999 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: main_~i~4 <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. SAFE Result, 2.4s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.5s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 27 SDslu, 22 SDs, 0 SdLazy, 42 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, 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, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 22 NumberOfFragments, 25 HoareAnnotationTreeSize, 5 FomulaSimplifications, 256 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 111 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1261 SizeOfPredicates, 2 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 19/32 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/count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_10-43-27-176.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1_variant.i_2.bplTransformedIcfg_BEv2_3.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_10-43-27-176.csv Received shutdown request...