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.4.2.ufo.BOUNDED-8.pals.c_10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-e6fd87c [2018-07-25 13:28:26,768 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-25 13:28:26,770 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-25 13:28:26,785 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-25 13:28:26,786 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-25 13:28:26,787 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-25 13:28:26,788 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-25 13:28:26,790 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-25 13:28:26,791 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-25 13:28:26,792 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-25 13:28:26,793 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-25 13:28:26,793 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-25 13:28:26,794 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-25 13:28:26,796 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-25 13:28:26,800 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-25 13:28:26,803 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-25 13:28:26,804 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-25 13:28:26,806 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-25 13:28:26,808 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-25 13:28:26,809 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-25 13:28:26,810 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-25 13:28:26,811 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-25 13:28:26,814 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-25 13:28:26,814 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-25 13:28:26,815 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-25 13:28:26,815 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-25 13:28:26,816 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-25 13:28:26,817 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-25 13:28:26,818 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-25 13:28:26,819 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-25 13:28:26,820 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-25 13:28:26,820 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-25 13:28:26,823 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/Pdr/AutomizerBpl-nestedInterpolants.epf [2018-07-25 13:28:26,831 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-25 13:28:26,831 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-25 13:28:26,832 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-25 13:28:26,833 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol [2018-07-25 13:28:26,833 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-25 13:28:26,833 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-07-25 13:28:26,833 INFO L133 SettingsManager]: * Use separate solver for trace checks=false [2018-07-25 13:28:26,833 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-25 13:28:26,885 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-25 13:28:26,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-25 13:28:26,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-25 13:28:26,903 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-07-25 13:28:26,903 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-07-25 13:28:26,904 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl [2018-07-25 13:28:26,904 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl' [2018-07-25 13:28:26,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-25 13:28:26,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-07-25 13:28:26,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-25 13:28:26,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-25 13:28:26,976 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-25 13:28:26,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:26" (1/1) ... [2018-07-25 13:28:27,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:26" (1/1) ... [2018-07-25 13:28:27,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-25 13:28:27,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-25 13:28:27,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-25 13:28:27,020 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-25 13:28:27,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:26" (1/1) ... [2018-07-25 13:28:27,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:26" (1/1) ... [2018-07-25 13:28:27,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:26" (1/1) ... [2018-07-25 13:28:27,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:26" (1/1) ... [2018-07-25 13:28:27,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:26" (1/1) ... [2018-07-25 13:28:27,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:26" (1/1) ... [2018-07-25 13:28:27,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:26" (1/1) ... [2018-07-25 13:28:27,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-25 13:28:27,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-25 13:28:27,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-25 13:28:27,081 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-25 13:28:27,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:26" (1/1) ... [2018-07-25 13:28:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-25 13:28:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-25 13:28:27,973 INFO L273 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-25 13:28:27,974 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:28:27 BoogieIcfgContainer [2018-07-25 13:28:27,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-25 13:28:27,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-25 13:28:27,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-25 13:28:27,986 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-25 13:28:27,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.07 01:28:26" (1/2) ... [2018-07-25 13:28:27,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3563c4 and model type pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.07 01:28:27, skipping insertion in model container [2018-07-25 13:28:27,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.07 01:28:27" (2/2) ... [2018-07-25 13:28:27,991 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl [2018-07-25 13:28:27,998 INFO L133 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-07-25 13:28:28,006 INFO L145 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-25 13:28:28,052 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-25 13:28:28,053 INFO L374 AbstractCegarLoop]: Interprodecural is true [2018-07-25 13:28:28,053 INFO L375 AbstractCegarLoop]: Hoare is true [2018-07-25 13:28:28,053 INFO L376 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-07-25 13:28:28,053 INFO L377 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-25 13:28:28,053 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-25 13:28:28,054 INFO L379 AbstractCegarLoop]: Difference is false [2018-07-25 13:28:28,054 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-25 13:28:28,054 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-25 13:28:28,069 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2018-07-25 13:28:28,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-07-25 13:28:28,077 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:28,078 INFO L354 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-07-25 13:28:28,080 INFO L415 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:28,085 INFO L82 PathProgramCache]: Analyzing trace with hash 990345, now seen corresponding path program 1 times [2018-07-25 13:28:28,092 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:28,296 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 13:28:28,299 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-25 13:28:28,300 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-25 13:28:28,305 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:28:28,319 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:28:28,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:28:28,322 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2018-07-25 13:28:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:28,388 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-07-25 13:28:28,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:28:28,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-07-25 13:28:28,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:28,405 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:28:28,405 INFO L226 Difference]: Without dead ends: 8 [2018-07-25 13:28:28,409 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 13:28:28,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-07-25 13:28:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-07-25 13:28:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-07-25 13:28:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-07-25 13:28:28,448 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2018-07-25 13:28:28,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:28,449 INFO L472 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2018-07-25 13:28:28,449 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:28:28,449 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2018-07-25 13:28:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-07-25 13:28:28,450 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:28,450 INFO L354 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2018-07-25 13:28:28,450 INFO L415 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:28,451 INFO L82 PathProgramCache]: Analyzing trace with hash 951799901, now seen corresponding path program 1 times [2018-07-25 13:28:28,451 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:28,534 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 13:28:28,535 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:28,535 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2018-07-25 13:28:28,537 INFO L451 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-25 13:28:28,538 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-25 13:28:28,538 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-07-25 13:28:28,539 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2018-07-25 13:28:28,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:28,639 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-07-25 13:28:28,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-25 13:28:28,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2018-07-25 13:28:28,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:28,641 INFO L225 Difference]: With dead ends: 12 [2018-07-25 13:28:28,641 INFO L226 Difference]: Without dead ends: 10 [2018-07-25 13:28:28,642 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 13:28:28,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2018-07-25 13:28:28,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-07-25 13:28:28,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-07-25 13:28:28,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-07-25 13:28:28,648 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2018-07-25 13:28:28,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:28,648 INFO L472 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2018-07-25 13:28:28,649 INFO L473 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-25 13:28:28,649 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2018-07-25 13:28:28,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-07-25 13:28:28,649 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:28,650 INFO L354 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2018-07-25 13:28:28,650 INFO L415 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:28,650 INFO L82 PathProgramCache]: Analyzing trace with hash -148250831, now seen corresponding path program 2 times [2018-07-25 13:28:28,653 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:28,816 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 13:28:28,816 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:28,817 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-07-25 13:28:28,817 INFO L451 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-25 13:28:28,817 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-25 13:28:28,818 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-07-25 13:28:28,818 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-07-25 13:28:28,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:28,934 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2018-07-25 13:28:28,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-25 13:28:28,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2018-07-25 13:28:28,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:28,937 INFO L225 Difference]: With dead ends: 13 [2018-07-25 13:28:28,938 INFO L226 Difference]: Without dead ends: 11 [2018-07-25 13:28:28,938 INFO L574 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-07-25 13:28:28,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-07-25 13:28:28,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-07-25 13:28:28,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-07-25 13:28:28,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-07-25 13:28:28,948 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-07-25 13:28:28,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:28,952 INFO L472 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2018-07-25 13:28:28,952 INFO L473 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-25 13:28:28,952 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2018-07-25 13:28:28,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-07-25 13:28:28,953 INFO L346 BasicCegarLoop]: Found error trace [2018-07-25 13:28:28,953 INFO L354 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1] [2018-07-25 13:28:28,955 INFO L415 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-07-25 13:28:28,955 INFO L82 PathProgramCache]: Analyzing trace with hash -735049467, now seen corresponding path program 3 times [2018-07-25 13:28:28,955 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-07-25 13:28:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-25 13:28:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-25 13:28:29,070 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-07-25 13:28:29,070 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2018-07-25 13:28:29,071 INFO L451 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-25 13:28:29,071 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-25 13:28:29,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-25 13:28:29,072 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2018-07-25 13:28:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-25 13:28:29,097 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2018-07-25 13:28:29,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-25 13:28:29,102 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2018-07-25 13:28:29,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-25 13:28:29,102 INFO L225 Difference]: With dead ends: 11 [2018-07-25 13:28:29,102 INFO L226 Difference]: Without dead ends: 0 [2018-07-25 13:28:29,103 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 13:28:29,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-07-25 13:28:29,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-07-25 13:28:29,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-07-25 13:28:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-07-25 13:28:29,105 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-07-25 13:28:29,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-25 13:28:29,105 INFO L472 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-07-25 13:28:29,105 INFO L473 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-25 13:28:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-07-25 13:28:29,106 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-07-25 13:28:29,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-07-25 13:28:29,187 INFO L422 ceAbstractionStarter]: For program point L353(lines 353 360) no Hoare annotation was computed. [2018-07-25 13:28:29,188 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startEXIT(lines 74 389) the Hoare annotation is: false [2018-07-25 13:28:29,188 INFO L422 ceAbstractionStarter]: For program point L316(lines 310 317) no Hoare annotation was computed. [2018-07-25 13:28:29,188 INFO L418 ceAbstractionStarter]: At program point L380(lines 380 387) the Hoare annotation is: false [2018-07-25 13:28:29,188 INFO L422 ceAbstractionStarter]: For program point L281(lines 281 291) no Hoare annotation was computed. [2018-07-25 13:28:29,189 INFO L418 ceAbstractionStarter]: At program point L374(lines 374 381) the Hoare annotation is: (and (<= ~r1 0) (<= 1 ~mode4) (= ULTIMATE.start_assert_~arg 1) (<= 1 ~mode1) (<= ~mode1 1) (<= ~mode4 1) (not (= ~p4_old ~nomsg)) (<= 0 ~r1)) [2018-07-25 13:28:29,191 INFO L422 ceAbstractionStarter]: For program point L339(lines 330 340) no Hoare annotation was computed. [2018-07-25 13:28:29,191 INFO L422 ceAbstractionStarter]: For program point L364(lines 359 365) no Hoare annotation was computed. [2018-07-25 13:28:29,192 INFO L422 ceAbstractionStarter]: For program point L296(lines 290 297) no Hoare annotation was computed. [2018-07-25 13:28:29,192 INFO L418 ceAbstractionStarter]: At program point ULTIMATE.startErr0ASSERT_VIOLATIONASSERT(line 388) the Hoare annotation is: false [2018-07-25 13:28:29,192 INFO L422 ceAbstractionStarter]: For program point L261(lines 261 272) no Hoare annotation was computed. [2018-07-25 13:28:29,193 INFO L422 ceAbstractionStarter]: For program point L321(lines 321 331) no Hoare annotation was computed. [2018-07-25 13:28:29,193 INFO L425 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 74 389) the Hoare annotation is: true [2018-07-25 13:28:29,193 INFO L422 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 74 389) no Hoare annotation was computed. [2018-07-25 13:28:29,193 INFO L422 ceAbstractionStarter]: For program point L276(lines 271 277) no Hoare annotation was computed. [2018-07-25 13:28:29,194 INFO L422 ceAbstractionStarter]: For program point L301(lines 301 311) no Hoare annotation was computed. [2018-07-25 13:28:29,197 INFO L418 ceAbstractionStarter]: At program point L386(lines 254 386) the Hoare annotation is: (let ((.cse0 (<= ~r1 0)) (.cse1 (<= 0 ~r1))) (or (and .cse0 (= ~mode1 (* 256 (div ~mode1 256))) (<= 0 ~send4) (<= ~send4 127) (= 0 (+ ~nomsg 1)) (= ~mode4 (* 256 (div ~mode4 256))) .cse1) (and .cse0 (<= 1 ~mode4) (= ULTIMATE.start_assert_~arg 1) (<= 1 ~mode1) (<= ~mode1 1) (<= ~mode4 1) (not (= ~p4_old ~nomsg)) .cse1))) [2018-07-25 13:28:29,214 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.07 01:28:29 BoogieIcfgContainer [2018-07-25 13:28:29,215 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-25 13:28:29,216 INFO L168 Benchmark]: Toolchain (without parser) took 2242.14 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: 116.3 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. [2018-07-25 13:28:29,218 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 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 13:28:29,223 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.04 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 13:28:29,224 INFO L168 Benchmark]: Boogie Preprocessor took 57.20 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 13:28:29,225 INFO L168 Benchmark]: RCFGBuilder took 894.08 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 13:28:29,228 INFO L168 Benchmark]: TraceAbstraction took 1237.59 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-07-25 13:28:29,234 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 0.14 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 44.04 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 57.20 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 894.08 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 1237.59 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 388]: 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: 254]: Loop Invariant Derived loop invariant: ((((((~r1 <= 0 && ~mode1 == 256 * (~mode1 / 256)) && 0 <= ~send4) && ~send4 <= 127) && 0 == ~nomsg + 1) && ~mode4 == 256 * (~mode4 / 256)) && 0 <= ~r1) || (((((((~r1 <= 0 && 1 <= ~mode4) && assert_~arg == 1) && 1 <= ~mode1) && ~mode1 <= 1) && ~mode4 <= 1) && !(~p4_old == ~nomsg)) && 0 <= ~r1) - InvariantResult [Line: 380]: Loop Invariant Derived loop invariant: false - InvariantResult [Line: 374]: Loop Invariant Derived loop invariant: ((((((~r1 <= 0 && 1 <= ~mode4) && assert_~arg == 1) && 1 <= ~mode1) && ~mode1 <= 1) && ~mode4 <= 1) && !(~p4_old == ~nomsg)) && 0 <= ~r1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 10 SDslu, 16 SDs, 0 SdLazy, 51 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 9 NumberOfFragments, 89 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1132 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 11/20 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.4.2.ufo.BOUNDED-8.pals.c_10.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-07-25_13-28-29-265.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c_10.bpl_AutomizerBpl-nestedInterpolants.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-25_13-28-29-265.csv Received shutdown request...