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 -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/num_conversion_2.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ff8eab6 [2018-09-26 08:18:29,736 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-26 08:18:29,738 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-26 08:18:29,754 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-26 08:18:29,754 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-26 08:18:29,756 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-26 08:18:29,757 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-26 08:18:29,759 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-26 08:18:29,762 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-26 08:18:29,763 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-26 08:18:29,764 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-09-26 08:18:29,803 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-09-26 08:18:29,817 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-26 08:18:29,817 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-26 08:18:29,818 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-26 08:18:29,820 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-09-26 08:18:29,821 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-26 08:18:29,821 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-09-26 08:18:29,821 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-09-26 08:18:29,821 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-26 08:18:29,867 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-26 08:18:29,882 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-26 08:18:29,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-26 08:18:29,891 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-09-26 08:18:29,891 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-09-26 08:18:29,892 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/num_conversion_2.i_3.bpl [2018-09-26 08:18:29,892 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/num_conversion_2.i_3.bpl' [2018-09-26 08:18:29,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-26 08:18:29,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-26 08:18:29,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-26 08:18:29,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-26 08:18:29,960 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-26 08:18:29,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:18:29" (1/1) ... [2018-09-26 08:18:29,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:18:29" (1/1) ... [2018-09-26 08:18:30,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-26 08:18:30,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-26 08:18:30,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-26 08:18:30,005 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-26 08:18:30,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:18:29" (1/1) ... [2018-09-26 08:18:30,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:18:29" (1/1) ... [2018-09-26 08:18:30,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:18:29" (1/1) ... [2018-09-26 08:18:30,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:18:29" (1/1) ... [2018-09-26 08:18:30,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:18:29" (1/1) ... [2018-09-26 08:18:30,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:18:29" (1/1) ... [2018-09-26 08:18:30,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:18:29" (1/1) ... [2018-09-26 08:18:30,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-26 08:18:30,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-26 08:18:30,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-26 08:18:30,031 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-26 08:18:30,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:18:29" (1/1) ... [2018-09-26 08:18:30,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-26 08:18:30,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-26 08:18:30,275 INFO L346 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-26 08:18:30,276 INFO L202 PluginConnector]: Adding new model num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:18:30 BoogieIcfgContainer [2018-09-26 08:18:30,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-26 08:18:30,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-26 08:18:30,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-26 08:18:30,281 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-26 08:18:30,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 26.09 08:18:29" (1/2) ... [2018-09-26 08:18:30,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b3c6e2 and model type num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.09 08:18:30, skipping insertion in model container [2018-09-26 08:18:30,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.09 08:18:30" (2/2) ... [2018-09-26 08:18:30,285 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.i_3.bpl [2018-09-26 08:18:30,295 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-09-26 08:18:30,302 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-26 08:18:30,350 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-09-26 08:18:30,351 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-26 08:18:30,351 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-26 08:18:30,352 INFO L383 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-09-26 08:18:30,352 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-26 08:18:30,352 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-26 08:18:30,352 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-26 08:18:30,352 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-26 08:18:30,353 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-26 08:18:30,368 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-09-26 08:18:30,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-09-26 08:18:30,376 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:18:30,377 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-09-26 08:18:30,378 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:18:30,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:18:30,385 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-09-26 08:18:30,392 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:18:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:18:30,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:18:30,481 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-26 08:18:30,482 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-26 08:18:30,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-26 08:18:30,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-26 08:18:30,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-26 08:18:30,505 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states. [2018-09-26 08:18:30,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:18:30,537 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2018-09-26 08:18:30,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-26 08:18:30,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-09-26 08:18:30,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:18:30,550 INFO L225 Difference]: With dead ends: 10 [2018-09-26 08:18:30,551 INFO L226 Difference]: Without dead ends: 7 [2018-09-26 08:18:30,554 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-26 08:18:30,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2018-09-26 08:18:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-09-26 08:18:30,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-09-26 08:18:30,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-09-26 08:18:30,594 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-09-26 08:18:30,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:18:30,594 INFO L480 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-09-26 08:18:30,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-26 08:18:30,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-09-26 08:18:30,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-09-26 08:18:30,595 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:18:30,595 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-09-26 08:18:30,596 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:18:30,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:18:30,597 INFO L82 PathProgramCache]: Analyzing trace with hash 889591169, now seen corresponding path program 1 times [2018-09-26 08:18:30,597 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:18:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:18:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:18:30,661 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:18:30,661 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-09-26 08:18:30,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-26 08:18:30,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-26 08:18:30,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 08:18:30,666 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-09-26 08:18:30,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:18:30,692 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-09-26 08:18:30,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-26 08:18:30,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2018-09-26 08:18:30,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:18:30,694 INFO L225 Difference]: With dead ends: 11 [2018-09-26 08:18:30,694 INFO L226 Difference]: Without dead ends: 9 [2018-09-26 08:18:30,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-09-26 08:18:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2018-09-26 08:18:30,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-09-26 08:18:30,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-09-26 08:18:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-09-26 08:18:30,699 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-09-26 08:18:30,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:18:30,700 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-09-26 08:18:30,700 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-26 08:18:30,700 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-09-26 08:18:30,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-26 08:18:30,701 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:18:30,701 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-09-26 08:18:30,701 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:18:30,701 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:18:30,702 INFO L82 PathProgramCache]: Analyzing trace with hash 198673595, now seen corresponding path program 2 times [2018-09-26 08:18:30,702 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:18:30,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:18:30,769 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:18:30,770 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:18:30,770 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-09-26 08:18:30,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-26 08:18:30,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-26 08:18:30,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-26 08:18:30,775 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-09-26 08:18:30,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:18:30,864 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-09-26 08:18:30,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-26 08:18:30,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2018-09-26 08:18:30,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:18:30,869 INFO L225 Difference]: With dead ends: 13 [2018-09-26 08:18:30,869 INFO L226 Difference]: Without dead ends: 11 [2018-09-26 08:18:30,870 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-26 08:18:30,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-09-26 08:18:30,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-09-26 08:18:30,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-09-26 08:18:30,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-09-26 08:18:30,880 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-09-26 08:18:30,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:18:30,880 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-09-26 08:18:30,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-26 08:18:30,881 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-09-26 08:18:30,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-26 08:18:30,883 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:18:30,883 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-09-26 08:18:30,883 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:18:30,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:18:30,884 INFO L82 PathProgramCache]: Analyzing trace with hash 1946815861, now seen corresponding path program 3 times [2018-09-26 08:18:30,885 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:18:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:18:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:18:31,024 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:18:31,025 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-09-26 08:18:31,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-26 08:18:31,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-26 08:18:31,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-09-26 08:18:31,026 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 6 states. [2018-09-26 08:18:31,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:18:31,103 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-09-26 08:18:31,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-26 08:18:31,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-09-26 08:18:31,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:18:31,105 INFO L225 Difference]: With dead ends: 15 [2018-09-26 08:18:31,105 INFO L226 Difference]: Without dead ends: 13 [2018-09-26 08:18:31,108 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-09-26 08:18:31,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-26 08:18:31,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-26 08:18:31,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-26 08:18:31,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-26 08:18:31,113 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-09-26 08:18:31,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:18:31,114 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-26 08:18:31,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-26 08:18:31,115 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-26 08:18:31,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-26 08:18:31,116 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:18:31,116 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-09-26 08:18:31,116 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:18:31,116 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:18:31,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1715646545, now seen corresponding path program 4 times [2018-09-26 08:18:31,119 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:18:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:18:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:18:31,189 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:18:31,189 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-09-26 08:18:31,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-26 08:18:31,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-26 08:18:31,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-26 08:18:31,190 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2018-09-26 08:18:31,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:18:31,241 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-09-26 08:18:31,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-26 08:18:31,242 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-09-26 08:18:31,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:18:31,242 INFO L225 Difference]: With dead ends: 17 [2018-09-26 08:18:31,243 INFO L226 Difference]: Without dead ends: 15 [2018-09-26 08:18:31,243 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-09-26 08:18:31,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-09-26 08:18:31,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-09-26 08:18:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-26 08:18:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-26 08:18:31,248 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-09-26 08:18:31,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:18:31,249 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-26 08:18:31,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-26 08:18:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-26 08:18:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-26 08:18:31,250 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:18:31,250 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-09-26 08:18:31,250 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:18:31,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:18:31,251 INFO L82 PathProgramCache]: Analyzing trace with hash 531164009, now seen corresponding path program 5 times [2018-09-26 08:18:31,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:18:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:18:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:18:31,318 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:18:31,318 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-09-26 08:18:31,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-26 08:18:31,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-26 08:18:31,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-26 08:18:31,320 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2018-09-26 08:18:31,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:18:31,377 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-26 08:18:31,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-26 08:18:31,378 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2018-09-26 08:18:31,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:18:31,378 INFO L225 Difference]: With dead ends: 19 [2018-09-26 08:18:31,379 INFO L226 Difference]: Without dead ends: 17 [2018-09-26 08:18:31,379 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-09-26 08:18:31,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-26 08:18:31,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-26 08:18:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-26 08:18:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-09-26 08:18:31,385 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2018-09-26 08:18:31,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:18:31,386 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-09-26 08:18:31,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-26 08:18:31,386 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-09-26 08:18:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-26 08:18:31,387 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:18:31,387 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1] [2018-09-26 08:18:31,387 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:18:31,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:18:31,388 INFO L82 PathProgramCache]: Analyzing trace with hash -652443485, now seen corresponding path program 6 times [2018-09-26 08:18:31,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:18:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:18:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:18:31,450 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:18:31,450 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-09-26 08:18:31,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-26 08:18:31,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-26 08:18:31,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-26 08:18:31,452 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-09-26 08:18:31,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:18:31,501 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-26 08:18:31,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-26 08:18:31,502 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2018-09-26 08:18:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:18:31,503 INFO L225 Difference]: With dead ends: 21 [2018-09-26 08:18:31,503 INFO L226 Difference]: Without dead ends: 19 [2018-09-26 08:18:31,504 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-09-26 08:18:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-26 08:18:31,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-26 08:18:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-26 08:18:31,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-09-26 08:18:31,514 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2018-09-26 08:18:31,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:18:31,514 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-09-26 08:18:31,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-26 08:18:31,515 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-09-26 08:18:31,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-26 08:18:31,517 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:18:31,517 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1] [2018-09-26 08:18:31,517 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:18:31,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:18:31,518 INFO L82 PathProgramCache]: Analyzing trace with hash 67088221, now seen corresponding path program 7 times [2018-09-26 08:18:31,518 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:18:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-26 08:18:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-26 08:18:31,590 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-26 08:18:31,590 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-09-26 08:18:31,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-26 08:18:31,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-26 08:18:31,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-26 08:18:31,592 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2018-09-26 08:18:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-26 08:18:31,646 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-09-26 08:18:31,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-26 08:18:31,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2018-09-26 08:18:31,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-26 08:18:31,648 INFO L225 Difference]: With dead ends: 23 [2018-09-26 08:18:31,648 INFO L226 Difference]: Without dead ends: 21 [2018-09-26 08:18:31,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-09-26 08:18:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-26 08:18:31,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-26 08:18:31,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-26 08:18:31,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-09-26 08:18:31,660 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2018-09-26 08:18:31,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-26 08:18:31,660 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-09-26 08:18:31,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-26 08:18:31,660 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-09-26 08:18:31,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-26 08:18:31,661 INFO L367 BasicCegarLoop]: Found error trace [2018-09-26 08:18:31,663 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1] [2018-09-26 08:18:31,663 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-09-26 08:18:31,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-09-26 08:18:31,664 INFO L82 PathProgramCache]: Analyzing trace with hash 47323031, now seen corresponding path program 8 times [2018-09-26 08:18:31,664 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-09-26 08:18:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-26 08:18:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-26 08:18:31,721 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-09-26 08:18:31,761 INFO L202 PluginConnector]: Adding new model num_conversion_2.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.09 08:18:31 BoogieIcfgContainer [2018-09-26 08:18:31,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-26 08:18:31,762 INFO L168 Benchmark]: Toolchain (without parser) took 1805.73 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: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-09-26 08:18:31,765 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 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. [2018-09-26 08:18:31,766 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.42 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. [2018-09-26 08:18:31,767 INFO L168 Benchmark]: Boogie Preprocessor took 23.09 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. [2018-09-26 08:18:31,768 INFO L168 Benchmark]: RCFGBuilder took 247.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-26 08:18:31,769 INFO L168 Benchmark]: TraceAbstraction took 1484.28 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. [2018-09-26 08:18:31,776 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 0.18 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 44.42 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. * Boogie Preprocessor took 23.09 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 247.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1484.28 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 46]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: overapproximation of shiftLeft at line 39, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L15] havoc main_#res; [L16] havoc main_#t~nondet0, main_~i~6, main_~bit~6, main_~x~5, main_~y~5, main_~c~5; [L17] main_~x~5 := main_#t~nondet0; [L18] havoc main_#t~nondet0; [L19] havoc main_~y~5; [L20] havoc main_~c~5; [L21] main_~y~5 := 0; [L22] main_~c~5 := 0; VAL [main_~c~5=0, main_~y~5=0] [L25] assume true; VAL [main_~c~5=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=1, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=1, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=2, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=2, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=3, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=3, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=4, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=4, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=5, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=5, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=6, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=6, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=7, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=7, main_~i~6=0, main_~y~5=0] [L38] assume !!(main_~c~5 % 256 < 8); [L39] main_~i~6 := ~shiftLeft(1, main_~c~5 % 256); [L40] main_~bit~6 := ~bitwiseAnd(main_~x~5 % 256, main_~i~6 % 256); [L41] assume main_~bit~6 % 256 != 0; [L42] main_~y~5 := main_~y~5 % 256 + main_~i~6 % 256; [L43] main_~c~5 := main_~c~5 % 256 + 1; VAL [main_~bit~6=1, main_~c~5=8, main_~i~6=0, main_~y~5=0] [L25] assume true; VAL [main_~bit~6=1, main_~c~5=8, main_~i~6=0, main_~y~5=0] [L30] assume !(main_~c~5 % 256 < 8); [L31] __VERIFIER_assert_#in~cond := (if main_~x~5 % 256 == main_~y~5 % 256 then 1 else 0); [L32] havoc __VERIFIER_assert_~cond; [L33] __VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; [L34] assume __VERIFIER_assert_~cond == 0; [L35] assume !false; VAL [__VERIFIER_assert_#in~cond=0, __VERIFIER_assert_~cond=0, main_~bit~6=1, main_~c~5=8, main_~i~6=0, main_~x~5=1, main_~y~5=0] [L46] assert false; VAL [__VERIFIER_assert_#in~cond=0, __VERIFIER_assert_~cond=0, main_~bit~6=1, main_~c~5=8, main_~i~6=0, main_~x~5=1, main_~y~5=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. UNSAFE Result, 1.4s OverallTime, 9 OverallIterations, 9 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 60 SDtfs, 0 SDslu, 205 SDs, 0 SdLazy, 276 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=8, 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, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 9936 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 0/168 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/num_conversion_2.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-26_08-18-31-794.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/num_conversion_2.i_3.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-26_08-18-31-794.csv Received shutdown request...