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/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-935f392 [2018-07-23 13:49:29,891 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 13:49:29,894 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 13:49:29,907 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 13:49:29,907 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 13:49:29,908 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 13:49:29,910 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 13:49:29,911 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 13:49:29,913 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 13:49:29,914 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 13:49:29,915 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 13:49:29,915 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 13:49:29,916 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 13:49:29,917 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 13:49:29,918 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 13:49:29,919 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 13:49:29,919 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 13:49:29,921 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 13:49:29,923 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 13:49:29,925 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 13:49:29,926 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 13:49:29,927 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 13:49:29,930 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-23 13:49:29,931 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-23 13:49:29,931 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-23 13:49:29,934 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-23 13:49:29,935 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-23 13:49:29,936 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-23 13:49:29,937 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-23 13:49:29,941 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-23 13:49:29,942 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-23 13:49:29,943 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-23 13:49:29,947 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 13:49:29,969 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 13:49:29,970 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 13:49:29,971 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 13:49:29,972 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-23 13:49:29,972 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 13:49:29,972 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-23 13:49:29,972 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-23 13:49:29,972 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 13:49:30,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 13:49:30,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 13:49:30,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 13:49:30,051 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-23 13:49:30,051 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-23 13:49:30,052 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl [2018-07-23 13:49:30,052 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl' [2018-07-23 13:49:30,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 13:49:30,155 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-07-23 13:49:30,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 13:49:30,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 13:49:30,156 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 13:49:30,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:30" (1/1) ... [2018-07-23 13:49:30,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:30" (1/1) ... [2018-07-23 13:49:30,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:30" (1/1) ... [2018-07-23 13:49:30,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:30" (1/1) ... [2018-07-23 13:49:30,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:30" (1/1) ... [2018-07-23 13:49:30,230 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:30" (1/1) ... [2018-07-23 13:49:30,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:30" (1/1) ... [2018-07-23 13:49:30,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 13:49:30,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 13:49:30,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 13:49:30,244 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 13:49:30,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:30" (1/1) ... [2018-07-23 13:49:30,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 13:49:30,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 13:49:30,999 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 13:49:31,000 INFO L202 PluginConnector]: Adding new model pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:49:30 BoogieIcfgContainer [2018-07-23 13:49:31,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 13:49:31,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 13:49:31,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 13:49:31,005 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 13:49:31,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 23.07 01:49:30" (1/2) ... [2018-07-23 13:49:31,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27af29d3 and model type pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 01:49:31, skipping insertion in model container [2018-07-23 13:49:31,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 01:49:30" (2/2) ... [2018-07-23 13:49:31,009 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl [2018-07-23 13:49:31,024 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-23 13:49:31,034 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 13:49:31,080 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 13:49:31,081 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 13:49:31,081 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 13:49:31,081 INFO L375 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-23 13:49:31,082 INFO L376 AbstractCegarLoop]: Backedges is CANONICAL [2018-07-23 13:49:31,082 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 13:49:31,082 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 13:49:31,082 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 13:49:31,083 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 13:49:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-23 13:49:31,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-23 13:49:31,107 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:31,108 INFO L357 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-23 13:49:31,109 INFO L414 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:31,116 INFO L82 PathProgramCache]: Analyzing trace with hash 987398, now seen corresponding path program 1 times [2018-07-23 13:49:31,123 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:31,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:31,339 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 13:49:31,342 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 13:49:31,342 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 13:49:31,345 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:31,345 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 13:49:31,345 INFO L185 omatonBuilderFactory]: Interpolants [9#true, 10#false, 11#(and (= ~mode1 (* 256 (div ~mode1 256))) (<= ~r1 (* 256 (div ~r1 256)))), 12#(= ULTIMATE.start_assert_~arg 1)] [2018-07-23 13:49:31,346 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 13:49:31,347 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:49:31,361 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:49:31,362 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:49:31,365 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-23 13:49:31,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:31,439 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-23 13:49:31,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:49:31,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-23 13:49:31,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:31,459 INFO L225 Difference]: With dead ends: 11 [2018-07-23 13:49:31,460 INFO L226 Difference]: Without dead ends: 8 [2018-07-23 13:49:31,464 INFO L575 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 [2018-07-23 13:49:31,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-23 13:49:31,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-23 13:49:31,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-23 13:49:31,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-23 13:49:31,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-23 13:49:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:31,503 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-23 13:49:31,503 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:49:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-23 13:49:31,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-23 13:49:31,504 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:31,504 INFO L357 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-23 13:49:31,505 INFO L414 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:31,505 INFO L82 PathProgramCache]: Analyzing trace with hash 948966809, now seen corresponding path program 1 times [2018-07-23 13:49:31,506 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:31,659 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 13:49:31,660 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:49:31,660 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-23 13:49:31,660 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:31,660 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 13:49:31,661 INFO L185 omatonBuilderFactory]: Interpolants [49#true, 50#false, 51#(and (= ~mode1 (* 256 (div ~mode1 256))) (<= ~r1 (* 256 (div ~r1 256)))), 52#(and (= ~mode1 1) (<= ~r1 (* 256 (div ~r1 256)))), 53#(= ULTIMATE.start_assert_~arg 1)] [2018-07-23 13:49:31,661 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 13:49:31,663 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-23 13:49:31,663 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-23 13:49:31,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-23 13:49:31,664 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-23 13:49:31,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:31,765 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-23 13:49:31,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-23 13:49:31,766 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-23 13:49:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:31,771 INFO L225 Difference]: With dead ends: 12 [2018-07-23 13:49:31,772 INFO L226 Difference]: Without dead ends: 10 [2018-07-23 13:49:31,773 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-23 13:49:31,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-23 13:49:31,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-23 13:49:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-23 13:49:31,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-23 13:49:31,781 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-23 13:49:31,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:31,782 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-23 13:49:31,782 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-23 13:49:31,782 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-23 13:49:31,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-23 13:49:31,783 INFO L349 BasicCegarLoop]: Found error trace [2018-07-23 13:49:31,783 INFO L357 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-23 13:49:31,784 INFO L414 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0AssertViolationASSERT]=== [2018-07-23 13:49:31,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1424114028, now seen corresponding path program 2 times [2018-07-23 13:49:31,784 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-23 13:49:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 13:49:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 13:49:31,947 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-23 13:49:31,947 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-23 13:49:31,948 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-07-23 13:49:31,948 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 13:49:31,948 INFO L185 omatonBuilderFactory]: Interpolants [98#true, 99#false, 100#(and (= ~mode3 (* 256 (div ~mode3 256))) (<= ~send2 127) (= ~mode2 (* 256 (div ~mode2 256))) (<= 0 ~send2) (= 0 (+ ~nomsg 1))), 101#(and (not (= ~p2_old ~nomsg)) (= ~mode3 1))] [2018-07-23 13:49:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-23 13:49:31,949 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 13:49:31,951 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 13:49:31,952 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:49:31,952 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-07-23 13:49:31,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 13:49:31,979 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2018-07-23 13:49:31,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 13:49:31,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-07-23 13:49:31,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 13:49:31,982 INFO L225 Difference]: With dead ends: 9 [2018-07-23 13:49:31,983 INFO L226 Difference]: Without dead ends: 0 [2018-07-23 13:49:31,983 INFO L575 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-23 13:49:31,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-23 13:49:31,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-23 13:49:31,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-23 13:49:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-23 13:49:31,987 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-07-23 13:49:31,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 13:49:31,988 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-23 13:49:31,988 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 13:49:31,988 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-23 13:49:31,988 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-23 13:49:31,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-23 13:49:32,058 INFO L421 ceAbstractionStarter]: For program point L184(lines 184 195) no Hoare annotation was computed. [2018-07-23 13:49:32,059 INFO L421 ceAbstractionStarter]: For program point L267(lines 263 274) no Hoare annotation was computed. [2018-07-23 13:49:32,060 INFO L417 ceAbstractionStarter]: At program point L288(lines 288 295) the Hoare annotation is: (and (= ~mode1 1) (= ULTIMATE.start_assert_~arg 1) (not (= ~p2_old ~nomsg)) (= ~mode3 1) (<= ~r1 (* 256 (div ~r1 256)))) [2018-07-23 13:49:32,060 INFO L421 ceAbstractionStarter]: For program point L202(lines 194 203) no Hoare annotation was computed. [2018-07-23 13:49:32,060 INFO L421 ceAbstractionStarter]: For program point L224(lines 216 225) no Hoare annotation was computed. [2018-07-23 13:49:32,060 INFO L421 ceAbstractionStarter]: For program point L246(lines 238 247) no Hoare annotation was computed. [2018-07-23 13:49:32,062 INFO L421 ceAbstractionStarter]: For program point L207(lines 207 217) no Hoare annotation was computed. [2018-07-23 13:49:32,062 INFO L421 ceAbstractionStarter]: For program point L229(lines 229 239) no Hoare annotation was computed. [2018-07-23 13:49:32,062 INFO L424 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 51 300) the Hoare annotation is: true [2018-07-23 13:49:32,062 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 51 300) the Hoare annotation is: false [2018-07-23 13:49:32,065 INFO L417 ceAbstractionStarter]: At program point L294(lines 294 298) the Hoare annotation is: false [2018-07-23 13:49:32,065 INFO L421 ceAbstractionStarter]: For program point L278(lines 273 279) no Hoare annotation was computed. [2018-07-23 13:49:32,067 INFO L417 ceAbstractionStarter]: At program point L297(lines 177 297) the Hoare annotation is: (let ((.cse0 (<= ~r1 (* 256 (div ~r1 256))))) (or (and (= ~mode1 1) (= ULTIMATE.start_assert_~arg 1) (not (= ~p2_old ~nomsg)) (= ~mode3 1) .cse0) (and (= ~mode3 (* 256 (div ~mode3 256))) (= ~mode1 (* 256 (div ~mode1 256))) (<= ~send2 127) (= ~mode2 (* 256 (div ~mode2 256))) (<= 0 ~send2) (= 0 (+ ~nomsg 1)) .cse0))) [2018-07-23 13:49:32,067 INFO L421 ceAbstractionStarter]: For program point L258(lines 258 264) no Hoare annotation was computed. [2018-07-23 13:49:32,068 INFO L417 ceAbstractionStarter]: At program point ULTIMATE.startErr0AssertViolationASSERT(line 299) the Hoare annotation is: false [2018-07-23 13:49:32,068 INFO L421 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 51 300) no Hoare annotation was computed. [2018-07-23 13:49:32,085 INFO L202 PluginConnector]: Adding new model pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 01:49:32 BoogieIcfgContainer [2018-07-23 13:49:32,085 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 13:49:32,087 INFO L168 Benchmark]: Toolchain (without parser) took 1932.41 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-07-23 13:49:32,089 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 13:49:32,091 INFO L168 Benchmark]: Boogie Preprocessor took 87.30 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 13:49:32,094 INFO L168 Benchmark]: RCFGBuilder took 756.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-07-23 13:49:32,095 INFO L168 Benchmark]: TraceAbstraction took 1084.50 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-07-23 13:49:32,101 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 87.30 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 756.40 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1084.50 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 299]: 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: 288]: Loop Invariant Derived loop invariant: (((~mode1 == 1 && assert_~arg == 1) && !(~p2_old == ~nomsg)) && ~mode3 == 1) && ~r1 <= 256 * (~r1 / 256) - InvariantResult [Line: 294]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 177]: Loop Invariant Derived loop invariant: ((((~mode1 == 1 && assert_~arg == 1) && !(~p2_old == ~nomsg)) && ~mode3 == 1) && ~r1 <= 256 * (~r1 / 256)) || ((((((~mode3 == 256 * (~mode3 / 256) && ~mode1 == 256 * (~mode1 / 256)) && ~send2 <= 127) && ~mode2 == 256 * (~mode2 / 256)) && 0 <= ~send2) && 0 == ~nomsg + 1) && ~r1 <= 256 * (~r1 / 256)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9 SDtfs, 3 SDslu, 11 SDs, 0 SdLazy, 23 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 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, 5/8 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 87 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 584 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 5/8 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/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-07-23_13-49-32-116.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c_13.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_13-49-32-116.csv Received shutdown request...