java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:28:23,968 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:28:23,970 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:28:23,987 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:28:23,988 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:28:23,989 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:28:23,991 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:28:23,993 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:28:23,995 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:28:23,996 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:28:23,996 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:28:23,997 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:28:23,998 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:28:23,998 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:28:24,000 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:28:24,000 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:28:24,001 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:28:24,003 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:28:24,010 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:28:24,016 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:28:24,017 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:28:24,018 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:28:24,021 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:28:24,021 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:28:24,021 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:28:24,022 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:28:24,023 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:28:24,024 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:28:24,024 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:28:24,025 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:28:24,026 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:28:24,026 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-07-25 13:28:24,027 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-07-25 13:28:24,027 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-07-25 13:28:24,028 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-07-25 13:28:24,029 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-07-25 13:28:24,029 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:28:24,037 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:28:24,037 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:28:24,038 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:28:24,039 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:28:24,039 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:28:24,039 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:28:24,039 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:28:24,039 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:28:24,093 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:28:24,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:28:24,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:28:24,115 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:28:24,116 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:28:24,117 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl [2018-07-25 13:28:24,117 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl' [2018-07-25 13:28:24,198 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:28:24,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:28:24,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:28:24,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:28:24,201 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:28:24,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:24" (1/1) ... [2018-07-25 13:28:24,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:24" (1/1) ... [2018-07-25 13:28:24,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:28:24,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:28:24,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:28:24,260 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:28:24,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:24" (1/1) ... [2018-07-25 13:28:24,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:24" (1/1) ... [2018-07-25 13:28:24,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:24" (1/1) ... [2018-07-25 13:28:24,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:24" (1/1) ... [2018-07-25 13:28:24,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:24" (1/1) ... [2018-07-25 13:28:24,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:24" (1/1) ... [2018-07-25 13:28:24,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:24" (1/1) ... [2018-07-25 13:28:24,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:28:24,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:28:24,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:28:24,300 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:28:24,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:24" (1/1) ... [2018-07-25 13:28:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:28:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:28:25,139 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:28:25,140 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:28:25 BoogieIcfgContainer [2018-07-25 13:28:25,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:28:25,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:28:25,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:28:25,145 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:28:25,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:24" (1/2) ... [2018-07-25 13:28:25,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@439656d9 and model type pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:28:25, skipping insertion in model container [2018-07-25 13:28:25,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:28:25" (2/2) ... [2018-07-25 13:28:25,149 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl [2018-07-25 13:28:25,160 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:28:25,168 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:28:25,213 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:28:25,214 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:28:25,214 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:28:25,214 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:28:25,214 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:28:25,215 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:28:25,215 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:28:25,215 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:28:25,215 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:28:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 13:28:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 13:28:25,238 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:25,239 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 13:28:25,240 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:25,245 INFO L82 PathProgramCache]: Analyzing trace with hash 990345, now seen corresponding path program 1 times [2018-07-25 13:28:25,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:25,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:25,385 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:28:25,385 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:28:25,390 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:28:25,405 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:28:25,406 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:28:25,409 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 13:28:25,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:25,470 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 13:28:25,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:28:25,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 13:28:25,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:25,483 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:28:25,484 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 13:28:25,487 INFO L574 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 [2018-07-25 13:28:25,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 13:28:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-25 13:28:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 13:28:25,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 13:28:25,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 13:28:25,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:25,521 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 13:28:25,521 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:28:25,521 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 13:28:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:28:25,522 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:25,522 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 13:28:25,522 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:25,522 INFO L82 PathProgramCache]: Analyzing trace with hash 951799901, now seen corresponding path program 1 times [2018-07-25 13:28:25,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:25,663 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:25,663 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:28:25,670 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:28:25,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:28:25,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:28:25,671 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-25 13:28:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:25,770 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 13:28:25,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:28:25,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-25 13:28:25,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:25,772 INFO L225 Difference]: With dead ends: 12 [2018-07-25 13:28:25,772 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 13:28:25,774 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-25 13:28:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 13:28:25,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-25 13:28:25,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:28:25,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 13:28:25,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 13:28:25,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:25,781 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 13:28:25,781 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:28:25,782 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 13:28:25,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:28:25,783 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:25,783 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 13:28:25,783 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:25,784 INFO L82 PathProgramCache]: Analyzing trace with hash -148250831, now seen corresponding path program 2 times [2018-07-25 13:28:25,784 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:25,961 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:25,961 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:28:25,961 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:28:25,962 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:28:25,962 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:28:25,963 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-07-25 13:28:26,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:26,070 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-07-25 13:28:26,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:28:26,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-07-25 13:28:26,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:26,071 INFO L225 Difference]: With dead ends: 14 [2018-07-25 13:28:26,071 INFO L226 Difference]: Without dead ends: 12 [2018-07-25 13:28:26,072 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:28:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-07-25 13:28:26,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-07-25 13:28:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 13:28:26,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 13:28:26,077 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 13:28:26,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:26,078 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 13:28:26,078 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:28:26,078 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 13:28:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 13:28:26,082 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:26,083 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 13:28:26,083 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:26,085 INFO L82 PathProgramCache]: Analyzing trace with hash -735049467, now seen corresponding path program 3 times [2018-07-25 13:28:26,085 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-25 13:28:26,316 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:26,316 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:28:26,316 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:28:26,317 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:28:26,317 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:28:26,318 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2018-07-25 13:28:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:26,513 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-07-25 13:28:26,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:28:26,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2018-07-25 13:28:26,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:26,516 INFO L225 Difference]: With dead ends: 16 [2018-07-25 13:28:26,516 INFO L226 Difference]: Without dead ends: 14 [2018-07-25 13:28:26,517 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:28:26,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-07-25 13:28:26,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-07-25 13:28:26,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-07-25 13:28:26,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-07-25 13:28:26,525 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-07-25 13:28:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:26,525 INFO L472 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-07-25 13:28:26,526 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:28:26,526 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-07-25 13:28:26,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-07-25 13:28:26,528 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:26,528 INFO L354 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1] [2018-07-25 13:28:26,529 INFO L415 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:26,529 INFO L82 PathProgramCache]: Analyzing trace with hash -2007822887, now seen corresponding path program 4 times [2018-07-25 13:28:26,531 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:26,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:26,682 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-25 13:28:26,683 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:26,683 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-07-25 13:28:26,683 INFO L451 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-25 13:28:26,683 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-25 13:28:26,684 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-07-25 13:28:26,684 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 8 states. [2018-07-25 13:28:26,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:26,758 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-07-25 13:28:26,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:28:26,759 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2018-07-25 13:28:26,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:26,760 INFO L225 Difference]: With dead ends: 17 [2018-07-25 13:28:26,760 INFO L226 Difference]: Without dead ends: 15 [2018-07-25 13:28:26,761 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-07-25 13:28:26,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-07-25 13:28:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-07-25 13:28:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-07-25 13:28:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-07-25 13:28:26,766 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-07-25 13:28:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:26,766 INFO L472 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-07-25 13:28:26,767 INFO L473 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-25 13:28:26,767 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-07-25 13:28:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-07-25 13:28:26,768 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:26,768 INFO L354 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1] [2018-07-25 13:28:26,768 INFO L415 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:26,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1077400147, now seen corresponding path program 5 times [2018-07-25 13:28:26,769 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:26,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-07-25 13:28:26,888 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:26,889 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 13:28:26,889 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:28:26,889 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:28:26,890 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:28:26,890 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2018-07-25 13:28:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:26,905 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2018-07-25 13:28:26,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:28:26,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-07-25 13:28:26,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:26,906 INFO L225 Difference]: With dead ends: 15 [2018-07-25 13:28:26,906 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 13:28:26,907 INFO L574 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 [2018-07-25 13:28:26,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 13:28:26,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 13:28:26,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 13:28:26,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 13:28:26,908 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2018-07-25 13:28:26,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:26,909 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 13:28:26,909 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:28:26,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 13:28:26,909 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 13:28:26,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 13:28:27,006 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 74 391) the Hoare annotation is: false [2018-07-25 13:28:27,006 INFO L418 ceAbstractionStarter]: At program point L382(lines 382 389) the Hoare annotation is: false [2018-07-25 13:28:27,006 INFO L422 ceAbstractionStarter]: For program point L283(lines 283 293) no Hoare annotation was computed. [2018-07-25 13:28:27,007 INFO L418 ceAbstractionStarter]: At program point L376(lines 376 383) the Hoare annotation is: (and (<= ~r1 0) (<= 1 ~mode4) (<= 1 ~mode1) (<= ~mode1 1) (<= ~mode3 1) (<= ~mode4 1) (<= 1 ~mode3) (= 1 ULTIMATE.start_assert_~arg) (<= 0 ~r1) (not (= ~p3_old ~nomsg))) [2018-07-25 13:28:27,007 INFO L422 ceAbstractionStarter]: For program point L341(lines 335 342) no Hoare annotation was computed. [2018-07-25 13:28:27,008 INFO L422 ceAbstractionStarter]: For program point L366(lines 361 367) no Hoare annotation was computed. [2018-07-25 13:28:27,008 INFO L422 ceAbstractionStarter]: For program point L298(lines 292 299) no Hoare annotation was computed. [2018-07-25 13:28:27,008 INFO L422 ceAbstractionStarter]: For program point L321(lines 312 322) no Hoare annotation was computed. [2018-07-25 13:28:27,008 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 74 391) the Hoare annotation is: true [2018-07-25 13:28:27,010 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 74 391) no Hoare annotation was computed. [2018-07-25 13:28:27,010 INFO L422 ceAbstractionStarter]: For program point L278(lines 272 279) no Hoare annotation was computed. [2018-07-25 13:28:27,011 INFO L422 ceAbstractionStarter]: For program point L303(lines 303 313) no Hoare annotation was computed. [2018-07-25 13:28:27,011 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 390) the Hoare annotation is: false [2018-07-25 13:28:27,011 INFO L422 ceAbstractionStarter]: For program point L262(lines 262 273) no Hoare annotation was computed. [2018-07-25 13:28:27,011 INFO L422 ceAbstractionStarter]: For program point L326(lines 326 336) no Hoare annotation was computed. [2018-07-25 13:28:27,013 INFO L418 ceAbstractionStarter]: At program point L388(lines 255 388) the Hoare annotation is: (let ((.cse0 (<= ~r1 0)) (.cse1 (<= 0 ~r1))) (or (and .cse0 (<= 1 ~mode4) (<= 1 ~mode1) (<= ~mode1 1) (<= ~mode3 1) (<= ~mode4 1) (<= 1 ~mode3) (= 1 ULTIMATE.start_assert_~arg) .cse1 (not (= ~p3_old ~nomsg))) (and .cse0 (<= ~send3 127) (= ~mode3 (* 256 (div ~mode3 256))) (= ~mode1 (* 256 (div ~mode1 256))) (= 0 (+ ~nomsg 1)) (= ~mode4 (* 256 (div ~mode4 256))) (<= 0 ~send3) .cse1))) [2018-07-25 13:28:27,013 INFO L422 ceAbstractionStarter]: For program point L355(lines 355 362) no Hoare annotation was computed. [2018-07-25 13:28:27,030 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:28:27 BoogieIcfgContainer [2018-07-25 13:28:27,031 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:28:27,032 INFO L168 Benchmark]: Toolchain (without parser) took 2833.66 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-07-25 13:28:27,035 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. [2018-07-25 13:28:27,036 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.59 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. [2018-07-25 13:28:27,037 INFO L168 Benchmark]: Boogie Preprocessor took 39.98 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. [2018-07-25 13:28:27,037 INFO L168 Benchmark]: RCFGBuilder took 840.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-07-25 13:28:27,039 INFO L168 Benchmark]: TraceAbstraction took 1889.52 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: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. [2018-07-25 13:28:27,045 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 58.59 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 39.98 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. * RCFGBuilder took 840.49 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1889.52 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: 169.1 MB). Peak memory consumption was 169.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 390]: 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: 255]: Loop Invariant Derived loop invariant: (((((((((~r1 <= 0 && 1 <= ~mode4) && 1 <= ~mode1) && ~mode1 <= 1) && ~mode3 <= 1) && ~mode4 <= 1) && 1 <= ~mode3) && 1 == assert_~arg) && 0 <= ~r1) && !(~p3_old == ~nomsg)) || (((((((~r1 <= 0 && ~send3 <= 127) && ~mode3 == 256 * (~mode3 / 256)) && ~mode1 == 256 * (~mode1 / 256)) && 0 == ~nomsg + 1) && ~mode4 == 256 * (~mode4 / 256)) && 0 <= ~send3) && 0 <= ~r1) - InvariantResult [Line: 382]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 376]: Loop Invariant Derived loop invariant: ((((((((~r1 <= 0 && 1 <= ~mode4) && 1 <= ~mode1) && ~mode1 <= 1) && ~mode3 <= 1) && ~mode4 <= 1) && 1 <= ~mode3) && 1 == assert_~arg) && 0 <= ~r1) && !(~p3_old == ~nomsg) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 21 SDslu, 34 SDs, 0 SdLazy, 107 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=5, 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, 6 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 108 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 3336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 1 PerfectInterpolantSequences, 34/70 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-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-28-27-074.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.4.1.ufo.BOUNDED-8.pals.c_10.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-28-27-074.csv Received shutdown request...