java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 08:44:42,327 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 08:44:42,329 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 08:44:42,341 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 08:44:42,342 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 08:44:42,343 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 08:44:42,344 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 08:44:42,346 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 08:44:42,348 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 08:44:42,349 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 08:44:42,349 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 08:44:42,350 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 08:44:42,351 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 08:44:42,352 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 08:44:42,353 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 08:44:42,354 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 08:44:42,354 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 08:44:42,356 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 08:44:42,358 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 08:44:42,360 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 08:44:42,361 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 08:44:42,363 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 08:44:42,365 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 08:44:42,366 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 08:44:42,366 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 08:44:42,367 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 08:44:42,368 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 08:44:42,369 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 08:44:42,370 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 08:44:42,371 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 08:44:42,371 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 08:44:42,372 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 08:44:42,372 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 08:44:42,372 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 08:44:42,373 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 08:44:42,374 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 08:44:42,374 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 08:44:42,388 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 08:44:42,389 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 08:44:42,390 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 08:44:42,390 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 08:44:42,391 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 08:44:42,391 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 08:44:42,391 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 08:44:42,391 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 08:44:42,455 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 08:44:42,470 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 08:44:42,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 08:44:42,476 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 08:44:42,477 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 08:44:42,477 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl [2018-07-25 08:44:42,478 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl' [2018-07-25 08:44:42,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 08:44:42,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 08:44:42,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 08:44:42,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 08:44:42,534 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 08:44:42,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:42" (1/1) ... [2018-07-25 08:44:42,569 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:42" (1/1) ... [2018-07-25 08:44:42,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 08:44:42,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 08:44:42,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 08:44:42,579 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 08:44:42,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:42" (1/1) ... [2018-07-25 08:44:42,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:42" (1/1) ... [2018-07-25 08:44:42,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:42" (1/1) ... [2018-07-25 08:44:42,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:42" (1/1) ... [2018-07-25 08:44:42,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:42" (1/1) ... [2018-07-25 08:44:42,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:42" (1/1) ... [2018-07-25 08:44:42,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:42" (1/1) ... [2018-07-25 08:44:42,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 08:44:42,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 08:44:42,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 08:44:42,601 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 08:44:42,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:42" (1/1) ... [2018-07-25 08:44:42,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 08:44:42,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 08:44:42,840 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 08:44:42,840 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:44:42 BoogieIcfgContainer [2018-07-25 08:44:42,841 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 08:44:42,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 08:44:42,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 08:44:42,846 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 08:44:42,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 08:44:42" (1/2) ... [2018-07-25 08:44:42,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c712e87 and model type count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 08:44:42, skipping insertion in model container [2018-07-25 08:44:42,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 08:44:42" (2/2) ... [2018-07-25 08:44:42,850 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i_2.bpl [2018-07-25 08:44:42,861 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 08:44:42,871 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 08:44:42,912 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 08:44:42,913 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 08:44:42,913 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 08:44:42,913 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 08:44:42,914 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 08:44:42,914 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 08:44:42,914 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 08:44:42,914 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 08:44:42,915 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 08:44:42,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 08:44:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 08:44:42,938 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:42,939 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 08:44:42,940 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:42,946 INFO L82 PathProgramCache]: Analyzing trace with hash 925701, now seen corresponding path program 1 times [2018-07-25 08:44:42,952 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:43,028 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 08:44:43,028 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 08:44:43,033 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 08:44:43,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 08:44:43,047 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 08:44:43,049 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 08:44:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:43,091 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 08:44:43,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 08:44:43,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 08:44:43,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:43,104 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:44:43,104 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 08:44:43,108 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-25 08:44:43,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 08:44:43,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-25 08:44:43,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 08:44:43,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 08:44:43,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 08:44:43,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:43,144 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 08:44:43,145 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 08:44:43,145 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 08:44:43,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 08:44:43,146 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:43,146 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 08:44:43,146 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:43,147 INFO L82 PathProgramCache]: Analyzing trace with hash 889531649, now seen corresponding path program 1 times [2018-07-25 08:44:43,147 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:43,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:43,196 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:43,196 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-25 08:44:43,199 INFO L451 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-25 08:44:43,199 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-25 08:44:43,199 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-25 08:44:43,200 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-25 08:44:43,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:43,234 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 08:44:43,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:44:43,236 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-25 08:44:43,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:43,237 INFO L225 Difference]: With dead ends: 11 [2018-07-25 08:44:43,237 INFO L226 Difference]: Without dead ends: 9 [2018-07-25 08:44:43,239 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:44:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-25 08:44:43,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-25 08:44:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 08:44:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 08:44:43,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 08:44:43,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:43,252 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 08:44:43,252 INFO L473 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-25 08:44:43,252 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 08:44:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 08:44:43,253 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 08:44:43,253 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 08:44:43,253 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 08:44:43,254 INFO L82 PathProgramCache]: Analyzing trace with hash 141355773, now seen corresponding path program 2 times [2018-07-25 08:44:43,254 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 08:44:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 08:44:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 08:44:43,309 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 08:44:43,309 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 08:44:43,310 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 08:44:43,310 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 08:44:43,310 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-25 08:44:43,311 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-07-25 08:44:43,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 08:44:43,374 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-25 08:44:43,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-25 08:44:43,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-07-25 08:44:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 08:44:43,376 INFO L225 Difference]: With dead ends: 9 [2018-07-25 08:44:43,376 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 08:44:43,377 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-07-25 08:44:43,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 08:44:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 08:44:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 08:44:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 08:44:43,378 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-07-25 08:44:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 08:44:43,378 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 08:44:43,378 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 08:44:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 08:44:43,379 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 08:44:43,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 08:44:43,431 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 1 35) the Hoare annotation is: false [2018-07-25 08:44:43,431 INFO L418 ceAbstractionStarter]: At program point L32(lines 32 33) the Hoare annotation is: false [2018-07-25 08:44:43,431 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 35) the Hoare annotation is: true [2018-07-25 08:44:43,431 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 35) no Hoare annotation was computed. [2018-07-25 08:44:43,432 INFO L418 ceAbstractionStarter]: At program point L28(lines 13 28) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~4 0) (and (<= ULTIMATE.start_main_~i~4 1000000) (= ULTIMATE.start___VERIFIER_assert_~cond 1))) [2018-07-25 08:44:43,432 INFO L418 ceAbstractionStarter]: At program point L20(lines 20 29) the Hoare annotation is: (and (= ULTIMATE.start___VERIFIER_assert_~cond 1) (<= ULTIMATE.start_main_~i~4 999999)) [2018-07-25 08:44:43,433 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 34) the Hoare annotation is: false [2018-07-25 08:44:43,444 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 08:44:43 BoogieIcfgContainer [2018-07-25 08:44:43,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 08:44:43,446 INFO L168 Benchmark]: Toolchain (without parser) took 913.77 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-25 08:44:43,449 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:44:43,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.89 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:44:43,450 INFO L168 Benchmark]: Boogie Preprocessor took 22.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-25 08:44:43,451 INFO L168 Benchmark]: RCFGBuilder took 239.95 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-25 08:44:43,452 INFO L168 Benchmark]: TraceAbstraction took 602.12 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-25 08:44:43,459 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 43.89 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 239.95 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 602.12 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 34]: 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: false - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: main_~i~4 <= 0 || (main_~i~4 <= 1000000 && __VERIFIER_assert_~cond == 1) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: __VERIFIER_assert_~cond == 1 && main_~i~4 <= 999999 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8 SDtfs, 3 SDslu, 12 SDs, 0 SdLazy, 23 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 10 NumberOfFragments, 22 HoareAnnotationTreeSize, 6 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 265 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 1/8 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.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_08-44-43-477.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1_variant.i_2.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_08-44-43-477.csv Received shutdown request...