java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:44:47,760 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:44:47,762 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:44:47,775 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:44:47,775 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:44:47,776 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:44:47,777 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:44:47,779 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:44:47,780 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:44:47,781 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:44:47,782 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 13:44:47,783 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 13:44:47,783 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 13:44:47,784 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 13:44:47,785 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 13:44:47,786 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 13:44:47,787 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 13:44:47,789 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 13:44:47,791 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 13:44:47,794 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 13:44:47,798 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 13:44:47,799 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 13:44:47,803 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 13:44:47,804 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 13:44:47,804 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 13:44:47,805 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 13:44:47,807 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 13:44:47,808 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 13:44:47,809 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 13:44:47,809 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 13:44:47,810 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 13:44:47,812 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-23 13:44:47,813 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-23 13:44:47,813 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-23 13:44:47,814 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-23 13:44:47,815 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-23 13:44:47,815 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/regression/bpl/AutomizerBpl-nestedInterpolants.epf [2018-07-23 13:44:47,838 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:44:47,838 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:44:47,840 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:44:47,840 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:44:47,840 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:44:47,841 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:44:47,841 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:44:47,841 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:44:47,898 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:44:47,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:44:47,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:44:47,925 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:44:47,925 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:44:47,926 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl [2018-07-23 13:44:47,926 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/count_by_1_variant.i_2.bpl' [2018-07-23 13:44:47,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:44:47,987 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:44:47,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:44:47,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:44:47,988 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:44:48,015 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 23.07 01:44:47" (1/1) ... [2018-07-23 13:44:48,017 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 23.07 01:44:47" (1/1) ... [2018-07-23 13:44:48,027 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 23.07 01:44:47" (1/1) ... [2018-07-23 13:44:48,028 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 23.07 01:44:47" (1/1) ... [2018-07-23 13:44:48,030 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 23.07 01:44:47" (1/1) ... [2018-07-23 13:44:48,032 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 23.07 01:44:47" (1/1) ... [2018-07-23 13:44:48,032 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 23.07 01:44:47" (1/1) ... [2018-07-23 13:44:48,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:44:48,035 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:44:48,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:44:48,035 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:44:48,036 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 23.07 01:44:47" (1/1) ... [2018-07-23 13:44:48,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 13:44:48,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 13:44:48,275 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 13:44:48,276 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:44:48 BoogieIcfgContainer [2018-07-23 13:44:48,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:44:48,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:44:48,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:44:48,281 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:44:48,281 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 23.07 01:44:47" (1/2) ... [2018-07-23 13:44:48,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bf254aa and model type count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:44:48, skipping insertion in model container [2018-07-23 13:44:48,283 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 23.07 01:44:48" (2/2) ... [2018-07-23 13:44:48,285 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i_2.bpl [2018-07-23 13:44:48,295 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:44:48,303 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:44:48,349 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:44:48,349 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:44:48,350 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:44:48,350 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:44:48,350 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:44:48,350 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:44:48,350 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:44:48,350 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:44:48,351 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:44:48,362 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-23 13:44:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 13:44:48,373 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:44:48,374 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 13:44:48,374 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:44:48,381 INFO L82 PathProgramCache]: Analyzing trace with hash 925701, now seen corresponding path program 1 times [2018-07-23 13:44:48,387 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:44:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:44:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:44:48,462 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:44:48,462 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 13:44:48,464 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:44:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:44:48,465 INFO L185 omatonBuilderFactory]: Interpolants [9#true, 10#false, 11#(<= ULTIMATE.start_main_~i~4 0), 12#(= ULTIMATE.start___VERIFIER_assert_~cond 1)] [2018-07-23 13:44:48,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:44:48,466 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:44:48,481 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:44:48,481 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:44:48,484 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-23 13:44:48,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:44:48,526 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-23 13:44:48,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 13:44:48,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-23 13:44:48,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:44:48,538 INFO L225 Difference]: With dead ends: 11 [2018-07-23 13:44:48,538 INFO L226 Difference]: Without dead ends: 8 [2018-07-23 13:44:48,542 INFO L575 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 [2018-07-23 13:44:48,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-23 13:44:48,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-23 13:44:48,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 13:44:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 13:44:48,580 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-23 13:44:48,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:44:48,580 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 13:44:48,580 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:44:48,581 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 13:44:48,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 13:44:48,581 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:44:48,582 INFO L357 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-23 13:44:48,582 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:44:48,582 INFO L82 PathProgramCache]: Analyzing trace with hash 889531649, now seen corresponding path program 1 times [2018-07-23 13:44:48,583 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:44:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:44:48,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:44:48,630 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:44:48,632 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-07-23 13:44:48,632 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:44:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:44:48,633 INFO L185 omatonBuilderFactory]: Interpolants [51#true, 52#false, 53#(<= ULTIMATE.start_main_~i~4 0), 54#(and (<= ULTIMATE.start_main_~i~4 0) (= ULTIMATE.start___VERIFIER_assert_~cond 1)), 55#(<= ULTIMATE.start_main_~i~4 1), 56#(not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))] [2018-07-23 13:44:48,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:44:48,636 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 13:44:48,636 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 13:44:48,637 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-07-23 13:44:48,637 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2018-07-23 13:44:48,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:44:48,671 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-23 13:44:48,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 13:44:48,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2018-07-23 13:44:48,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:44:48,673 INFO L225 Difference]: With dead ends: 11 [2018-07-23 13:44:48,673 INFO L226 Difference]: Without dead ends: 9 [2018-07-23 13:44:48,683 INFO L575 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 [2018-07-23 13:44:48,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-07-23 13:44:48,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-07-23 13:44:48,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 13:44:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-23 13:44:48,687 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-23 13:44:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:44:48,688 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-23 13:44:48,688 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 13:44:48,688 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-23 13:44:48,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 13:44:48,688 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:44:48,689 INFO L357 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-23 13:44:48,689 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:44:48,689 INFO L82 PathProgramCache]: Analyzing trace with hash 141355773, now seen corresponding path program 2 times [2018-07-23 13:44:48,689 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:44:48,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:44:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:44:48,737 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:44:48,737 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-23 13:44:48,737 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:44:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:44:48,738 INFO L185 omatonBuilderFactory]: Interpolants [99#true, 100#false, 101#(<= ULTIMATE.start_main_~i~4 0), 102#(= ULTIMATE.start___VERIFIER_assert_~cond 1), 103#(or (= 0 ULTIMATE.start___VERIFIER_assert_~cond) (<= ULTIMATE.start_main_~i~4 999999)), 104#(<= ULTIMATE.start_main_~i~4 1000000), 105#(not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))] [2018-07-23 13:44:48,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 13:44:48,739 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 13:44:48,739 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 13:44:48,739 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-07-23 13:44:48,740 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-07-23 13:44:48,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:44:48,799 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 13:44:48,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-07-23 13:44:48,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-07-23 13:44:48,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:44:48,800 INFO L225 Difference]: With dead ends: 9 [2018-07-23 13:44:48,800 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 13:44:48,801 INFO L575 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 [2018-07-23 13:44:48,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 13:44:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 13:44:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 13:44:48,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 13:44:48,807 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-07-23 13:44:48,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:44:48,807 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 13:44:48,807 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 13:44:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 13:44:48,808 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 13:44:48,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 13:44:48,896 INFO L417 ceAbstractionStarter]: At program point L32(lines 32 33) the Hoare annotation is: false [2018-07-23 13:44:48,897 INFO L417 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)) [2018-07-23 13:44:48,897 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startErr0AssertViolationASSERT(line 34) the Hoare annotation is: false [2018-07-23 13:44:48,897 INFO L417 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))) [2018-07-23 13:44:48,898 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 35) the Hoare annotation is: true [2018-07-23 13:44:48,898 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 35) no Hoare annotation was computed. [2018-07-23 13:44:48,898 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 1 35) the Hoare annotation is: false [2018-07-23 13:44:48,911 INFO L202 PluginConnector]: Adding new model count_by_1_variant.i_2.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:44:48 BoogieIcfgContainer [2018-07-23 13:44:48,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:44:48,915 INFO L168 Benchmark]: Toolchain (without parser) took 928.64 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-23 13:44:48,918 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 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. [2018-07-23 13:44:48,919 INFO L168 Benchmark]: Boogie Preprocessor took 46.82 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. [2018-07-23 13:44:48,920 INFO L168 Benchmark]: RCFGBuilder took 241.94 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 13:44:48,922 INFO L168 Benchmark]: TraceAbstraction took 635.89 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. [2018-07-23 13:44:48,928 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 0.22 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 46.82 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 241.94 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 635.89 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: 20]: Loop Invariant Derived loop invariant: __VERIFIER_assert_~cond == 1 && main_~i~4 <= 999999 - 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) - 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, 1/8 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_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-44-48-944.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1_variant.i_2.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-44-48-944.csv Received shutdown request...