java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/matrix.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-9f4048f [2018-10-04 12:26:04,657 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-04 12:26:04,664 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-04 12:26:04,677 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-04 12:26:04,678 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-04 12:26:04,679 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-04 12:26:04,680 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-04 12:26:04,681 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-04 12:26:04,683 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-04 12:26:04,684 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-04 12:26:04,685 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-04 12:26:04,711 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default.epf [2018-10-04 12:26:04,732 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-04 12:26:04,733 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-04 12:26:04,733 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-04 12:26:04,733 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-04 12:26:04,734 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-04 12:26:04,734 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-04 12:26:04,734 INFO L133 SettingsManager]: * Use SBE=true [2018-10-04 12:26:04,735 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-04 12:26:04,735 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-04 12:26:04,735 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-04 12:26:04,735 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-04 12:26:04,735 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-04 12:26:04,736 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-04 12:26:04,736 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-04 12:26:04,736 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-04 12:26:04,736 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-04 12:26:04,736 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-04 12:26:04,737 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-04 12:26:04,737 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-04 12:26:04,737 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-04 12:26:04,737 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-04 12:26:04,737 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-04 12:26:04,738 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:26:04,738 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-04 12:26:04,738 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-04 12:26:04,739 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-04 12:26:04,739 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-04 12:26:04,739 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-04 12:26:04,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-04 12:26:04,739 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-04 12:26:04,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-04 12:26:04,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-04 12:26:04,815 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-04 12:26:04,817 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-04 12:26:04,817 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-04 12:26:04,818 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/matrix.i_4.bpl [2018-10-04 12:26:04,818 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/matrix.i_4.bpl' [2018-10-04 12:26:04,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-04 12:26:04,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-04 12:26:04,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-04 12:26:04,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-04 12:26:04,869 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-04 12:26:04,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:26:04" (1/1) ... [2018-10-04 12:26:04,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:26:04" (1/1) ... [2018-10-04 12:26:04,909 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-04 12:26:04,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-04 12:26:04,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-04 12:26:04,911 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-04 12:26:04,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:26:04" (1/1) ... [2018-10-04 12:26:04,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:26:04" (1/1) ... [2018-10-04 12:26:04,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:26:04" (1/1) ... [2018-10-04 12:26:04,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:26:04" (1/1) ... [2018-10-04 12:26:04,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:26:04" (1/1) ... [2018-10-04 12:26:04,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:26:04" (1/1) ... [2018-10-04 12:26:04,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:26:04" (1/1) ... [2018-10-04 12:26:04,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-04 12:26:04,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-04 12:26:04,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-04 12:26:04,931 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-04 12:26:04,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:26:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-04 12:26:04,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-04 12:26:04,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-04 12:26:05,276 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-04 12:26:05,276 INFO L202 PluginConnector]: Adding new model matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:26:05 BoogieIcfgContainer [2018-10-04 12:26:05,277 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-04 12:26:05,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-04 12:26:05,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-04 12:26:05,284 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-04 12:26:05,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 12:26:04" (1/2) ... [2018-10-04 12:26:05,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f50bf4b and model type matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 12:26:05, skipping insertion in model container [2018-10-04 12:26:05,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 12:26:05" (2/2) ... [2018-10-04 12:26:05,288 INFO L112 eAbstractionObserver]: Analyzing ICFG matrix.i_4.bpl [2018-10-04 12:26:05,299 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-04 12:26:05,307 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-04 12:26:05,354 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-04 12:26:05,355 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-10-04 12:26:05,355 INFO L382 AbstractCegarLoop]: Hoare is true [2018-10-04 12:26:05,356 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-04 12:26:05,356 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-04 12:26:05,356 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-04 12:26:05,356 INFO L386 AbstractCegarLoop]: Difference is false [2018-10-04 12:26:05,356 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-04 12:26:05,357 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-04 12:26:05,372 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2018-10-04 12:26:05,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-10-04 12:26:05,378 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:26:05,379 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-10-04 12:26:05,380 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:26:05,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:26:05,387 INFO L82 PathProgramCache]: Analyzing trace with hash 925639, now seen corresponding path program 1 times [2018-10-04 12:26:05,389 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:26:05,389 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:26:05,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:26:05,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:26:05,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:26:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:26:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:26:05,640 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:26:05,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-04 12:26:05,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-04 12:26:05,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-04 12:26:05,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 12:26:05,666 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2018-10-04 12:26:05,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:26:05,778 INFO L93 Difference]: Finished difference Result 17 states and 23 transitions. [2018-10-04 12:26:05,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-04 12:26:05,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-10-04 12:26:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:26:05,791 INFO L225 Difference]: With dead ends: 17 [2018-10-04 12:26:05,791 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 12:26:05,795 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-04 12:26:05,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 12:26:05,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-10-04 12:26:05,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-10-04 12:26:05,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-10-04 12:26:05,832 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 4 [2018-10-04 12:26:05,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:26:05,833 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2018-10-04 12:26:05,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-04 12:26:05,833 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2018-10-04 12:26:05,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-10-04 12:26:05,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:26:05,834 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-10-04 12:26:05,834 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:26:05,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:26:05,835 INFO L82 PathProgramCache]: Analyzing trace with hash 209100445, now seen corresponding path program 1 times [2018-10-04 12:26:05,835 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:26:05,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:26:05,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:26:05,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:26:05,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:26:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:26:05,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:26:05,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-04 12:26:05,947 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-04 12:26:05,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-04 12:26:05,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-04 12:26:05,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-04 12:26:05,950 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 4 states. [2018-10-04 12:26:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:26:05,990 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2018-10-04 12:26:05,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-04 12:26:05,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-10-04 12:26:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:26:05,991 INFO L225 Difference]: With dead ends: 17 [2018-10-04 12:26:05,991 INFO L226 Difference]: Without dead ends: 11 [2018-10-04 12:26:05,992 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-04 12:26:05,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-04 12:26:05,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-04 12:26:05,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-04 12:26:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-04 12:26:05,998 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-10-04 12:26:05,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:26:05,998 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-04 12:26:05,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-04 12:26:05,998 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-04 12:26:05,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-04 12:26:05,999 INFO L367 BasicCegarLoop]: Found error trace [2018-10-04 12:26:05,999 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2018-10-04 12:26:05,999 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-04 12:26:06,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-04 12:26:06,000 INFO L82 PathProgramCache]: Analyzing trace with hash -850198025, now seen corresponding path program 1 times [2018-10-04 12:26:06,000 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-04 12:26:06,000 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-04 12:26:06,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:26:06,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:26:06,001 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-04 12:26:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:26:06,357 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 15 [2018-10-04 12:26:06,616 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 19 [2018-10-04 12:26:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:26:06,731 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-04 12:26:06,731 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-04 12:26:06,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-04 12:26:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-04 12:26:06,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-04 12:26:06,883 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2018-10-04 12:26:06,904 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-10-04 12:26:06,905 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-10-04 12:26:06,929 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-04 12:26:07,105 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-10-04 12:26:07,106 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:34 [2018-10-04 12:26:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-04 12:26:07,255 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-04 12:26:07,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-10-04 12:26:07,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-04 12:26:07,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-04 12:26:07,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-04 12:26:07,257 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 6 states. [2018-10-04 12:26:07,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-04 12:26:07,528 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2018-10-04 12:26:07,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-04 12:26:07,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2018-10-04 12:26:07,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-04 12:26:07,532 INFO L225 Difference]: With dead ends: 15 [2018-10-04 12:26:07,532 INFO L226 Difference]: Without dead ends: 0 [2018-10-04 12:26:07,533 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-04 12:26:07,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-04 12:26:07,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-04 12:26:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-04 12:26:07,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-04 12:26:07,534 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-10-04 12:26:07,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-04 12:26:07,535 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-04 12:26:07,535 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-04 12:26:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-04 12:26:07,535 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-04 12:26:07,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-04 12:26:07,712 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2018-10-04 12:26:07,821 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 19 [2018-10-04 12:26:08,030 WARN L178 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2018-10-04 12:26:08,286 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 23 [2018-10-04 12:26:08,290 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 71) no Hoare annotation was computed. [2018-10-04 12:26:08,291 INFO L421 ceAbstractionStarter]: At program point L32(lines 32 43) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~N_LIN~5)) (.cse1 (<= ULTIMATE.start_main_~N_LIN~5 1))) (or (and (<= (select (select ULTIMATE.start_main_~matriz~5 0) 0) ULTIMATE.start_main_~maior~5) .cse0 .cse1) (and (<= 0 ULTIMATE.start_main_~j~5) (<= (+ ULTIMATE.start_main_~j~5 1) ULTIMATE.start_main_~N_COL~5) .cse0 (<= ULTIMATE.start_main_~N_COL~5 1) .cse1))) [2018-10-04 12:26:08,294 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(lines 1 71) no Hoare annotation was computed. [2018-10-04 12:26:08,294 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 71) no Hoare annotation was computed. [2018-10-04 12:26:08,295 INFO L421 ceAbstractionStarter]: At program point L59(lines 29 59) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~N_LIN~5)) (.cse1 (<= ULTIMATE.start_main_~N_LIN~5 1))) (or (and (<= (select (select ULTIMATE.start_main_~matriz~5 0) 0) ULTIMATE.start_main_~maior~5) .cse0 .cse1) (and (<= 0 ULTIMATE.start_main_~j~5) (<= (+ ULTIMATE.start_main_~j~5 1) ULTIMATE.start_main_~N_COL~5) .cse0 (<= ULTIMATE.start_main_~N_COL~5 1) .cse1))) [2018-10-04 12:26:08,295 INFO L421 ceAbstractionStarter]: At program point L51(lines 51 60) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~N_LIN~5 1))) (or (and (<= (select (select ULTIMATE.start_main_~matriz~5 0) 0) ULTIMATE.start_main_~maior~5) (<= 1 ULTIMATE.start_main_~N_LIN~5) .cse0) (and (< 0 (+ (div ULTIMATE.start_main_~j~5 4294967296) 1)) (<= (+ ULTIMATE.start_main_~k~5 1) ULTIMATE.start_main_~N_LIN~5) (<= 0 ULTIMATE.start_main_~k~5) (<= ULTIMATE.start_main_~j~5 0) .cse0))) [2018-10-04 12:26:08,295 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 48) no Hoare annotation was computed. [2018-10-04 12:26:08,295 INFO L421 ceAbstractionStarter]: At program point L42(lines 42 47) the Hoare annotation is: false [2018-10-04 12:26:08,296 INFO L421 ceAbstractionStarter]: At program point L70(lines 46 70) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~N_LIN~5 1))) (or (and (<= (select (select ULTIMATE.start_main_~matriz~5 0) 0) ULTIMATE.start_main_~maior~5) (<= 1 ULTIMATE.start_main_~N_LIN~5) .cse0) (and (< 0 (+ (div ULTIMATE.start_main_~j~5 4294967296) 1)) (<= (+ ULTIMATE.start_main_~k~5 1) ULTIMATE.start_main_~N_LIN~5) (<= 0 ULTIMATE.start_main_~k~5) (<= ULTIMATE.start_main_~j~5 0) .cse0))) [2018-10-04 12:26:08,318 INFO L202 PluginConnector]: Adding new model matrix.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.10 12:26:08 BoogieIcfgContainer [2018-10-04 12:26:08,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-04 12:26:08,320 INFO L168 Benchmark]: Toolchain (without parser) took 3452.07 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: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. [2018-10-04 12:26:08,321 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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. [2018-10-04 12:26:08,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-04 12:26:08,322 INFO L168 Benchmark]: Boogie Preprocessor took 19.92 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. [2018-10-04 12:26:08,323 INFO L168 Benchmark]: RCFGBuilder took 347.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-04 12:26:08,324 INFO L168 Benchmark]: TraceAbstraction took 3040.05 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: 108.4 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. [2018-10-04 12:26:08,334 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 0.19 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 40.98 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 19.92 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 347.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3040.05 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: 108.4 MB). Peak memory consumption was 108.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((main_~matriz~5[0][0] <= main_~maior~5 && 1 <= main_~N_LIN~5) && main_~N_LIN~5 <= 1) || ((((0 <= main_~j~5 && main_~j~5 + 1 <= main_~N_COL~5) && 1 <= main_~N_LIN~5) && main_~N_COL~5 <= 1) && main_~N_LIN~5 <= 1) - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((main_~matriz~5[0][0] <= main_~maior~5 && 1 <= main_~N_LIN~5) && main_~N_LIN~5 <= 1) || ((((0 <= main_~j~5 && main_~j~5 + 1 <= main_~N_COL~5) && 1 <= main_~N_LIN~5) && main_~N_COL~5 <= 1) && main_~N_LIN~5 <= 1) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((main_~matriz~5[0][0] <= main_~maior~5 && 1 <= main_~N_LIN~5) && main_~N_LIN~5 <= 1) || ((((0 < main_~j~5 / 4294967296 + 1 && main_~k~5 + 1 <= main_~N_LIN~5) && 0 <= main_~k~5) && main_~j~5 <= 0) && main_~N_LIN~5 <= 1) - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: ((main_~matriz~5[0][0] <= main_~maior~5 && 1 <= main_~N_LIN~5) && main_~N_LIN~5 <= 1) || ((((0 < main_~j~5 / 4294967296 + 1 && main_~k~5 + 1 <= main_~N_LIN~5) && 0 <= main_~k~5) && main_~j~5 <= 0) && main_~N_LIN~5 <= 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.7s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 14 SDslu, 17 SDs, 0 SdLazy, 29 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 17 NumberOfFragments, 141 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 122 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 2342 SizeOfPredicates, 5 NumberOfNonLiveVariables, 37 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 2/10 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/matrix.i_4.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-04_12-26-08-361.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/matrix.i_4.bpl_svcomp-Reach-32bit-Automizer_Default.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-04_12-26-08-361.csv Received shutdown request...