java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-04 21:27:48,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-04 21:27:48,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-04 21:27:48,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-04 21:27:48,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-04 21:27:48,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-04 21:27:48,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-04 21:27:48,942 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-04 21:27:48,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-04 21:27:48,944 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-04 21:27:48,945 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-04 21:27:48,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-04 21:27:48,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-04 21:27:48,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-04 21:27:48,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-04 21:27:48,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-04 21:27:48,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-04 21:27:48,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-04 21:27:48,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-04 21:27:48,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-04 21:27:48,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-04 21:27:48,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-04 21:27:48,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-04 21:27:48,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-04 21:27:48,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-04 21:27:48,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-04 21:27:48,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-04 21:27:48,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-04 21:27:48,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-04 21:27:48,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-04 21:27:48,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-04 21:27:48,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-04 21:27:48,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-04 21:27:48,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-04 21:27:48,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-04 21:27:48,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-04 21:27:49,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-04 21:27:49,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-04 21:27:49,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-04 21:27:49,034 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-04 21:27:49,035 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-04 21:27:49,036 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl [2019-08-04 21:27:49,036 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170319-ConjunctivePathPrograms/pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl' [2019-08-04 21:27:49,094 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-04 21:27:49,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-04 21:27:49,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-04 21:27:49,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-04 21:27:49,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-04 21:27:49,112 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:49" (1/1) ... [2019-08-04 21:27:49,124 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:49" (1/1) ... [2019-08-04 21:27:49,133 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-04 21:27:49,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-04 21:27:49,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-04 21:27:49,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-04 21:27:49,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:49" (1/1) ... [2019-08-04 21:27:49,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:49" (1/1) ... [2019-08-04 21:27:49,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:49" (1/1) ... [2019-08-04 21:27:49,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:49" (1/1) ... [2019-08-04 21:27:49,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:49" (1/1) ... [2019-08-04 21:27:49,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:49" (1/1) ... [2019-08-04 21:27:49,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:49" (1/1) ... [2019-08-04 21:27:49,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-04 21:27:49,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-04 21:27:49,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-04 21:27:49,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-04 21:27:49,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-04 21:27:49,243 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2019-08-04 21:27:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-04 21:27:49,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-04 21:27:50,366 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-04 21:27:50,366 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-04 21:27:50,368 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:27:50 BoogieIcfgContainer [2019-08-04 21:27:50,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-04 21:27:50,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-04 21:27:50,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-04 21:27:50,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-04 21:27:50,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.08 09:27:49" (1/2) ... [2019-08-04 21:27:50,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@398c2ef1 and model type pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 09:27:50, skipping insertion in model container [2019-08-04 21:27:50,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:27:50" (2/2) ... [2019-08-04 21:27:50,387 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl [2019-08-04 21:27:50,395 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-04 21:27:50,402 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-04 21:27:50,414 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-04 21:27:50,437 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-04 21:27:50,438 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-04 21:27:50,438 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-04 21:27:50,439 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-04 21:27:50,439 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-04 21:27:50,439 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-04 21:27:50,439 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-04 21:27:50,439 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-04 21:27:50,440 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-04 21:27:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-08-04 21:27:50,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-04 21:27:50,462 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:27:50,463 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-04 21:27:50,465 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:27:50,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:27:50,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1001234, now seen corresponding path program 1 times [2019-08-04 21:27:50,514 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:27:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:27:50,651 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2019-08-04 21:27:50,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:27:50,740 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:27:50,757 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:27:50,776 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:27:50,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-04 21:27:50,807 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-04 21:27:50,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-08-04 21:27:50,811 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-04 21:27:50,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-04 21:27:50,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-08-04 21:27:50,824 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 4 states. [2019-08-04 21:27:50,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:27:50,870 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-04 21:27:50,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-04 21:27:50,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-04 21:27:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:27:50,881 INFO L225 Difference]: With dead ends: 7 [2019-08-04 21:27:50,881 INFO L226 Difference]: Without dead ends: 7 [2019-08-04 21:27:50,883 INFO L628 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 [2019-08-04 21:27:50,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-08-04 21:27:50,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-08-04 21:27:50,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-04 21:27:50,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-04 21:27:50,916 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 4 [2019-08-04 21:27:50,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:27:50,916 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-04 21:27:50,917 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-04 21:27:50,917 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-04 21:27:50,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-04 21:27:50,917 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:27:50,918 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2019-08-04 21:27:50,918 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:27:50,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:27:50,918 INFO L82 PathProgramCache]: Analyzing trace with hash 962148267, now seen corresponding path program 1 times [2019-08-04 21:27:50,919 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:27:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:27:51,088 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2019-08-04 21:27:51,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:27:51,174 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:27:51,379 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2019-08-04 21:27:51,408 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:27:51,409 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:27:51,411 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:27:51,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-04 21:27:51,508 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-04 21:27:51,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-04 21:27:51,510 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-04 21:27:51,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-04 21:27:51,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-04 21:27:51,511 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-08-04 21:27:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:27:51,769 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-08-04 21:27:51,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-04 21:27:51,770 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-08-04 21:27:51,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:27:51,771 INFO L225 Difference]: With dead ends: 9 [2019-08-04 21:27:51,772 INFO L226 Difference]: Without dead ends: 9 [2019-08-04 21:27:51,773 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-08-04 21:27:51,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-08-04 21:27:51,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-08-04 21:27:51,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-08-04 21:27:51,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-08-04 21:27:51,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2019-08-04 21:27:51,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:27:51,782 INFO L475 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-08-04 21:27:51,785 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-04 21:27:51,785 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-08-04 21:27:51,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-08-04 21:27:51,786 INFO L391 BasicCegarLoop]: Found error trace [2019-08-04 21:27:51,786 INFO L399 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1] [2019-08-04 21:27:51,787 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2019-08-04 21:27:51,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-04 21:27:51,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1206478340, now seen corresponding path program 2 times [2019-08-04 21:27:51,788 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-04 21:27:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-04 21:27:51,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2019-08-04 21:27:51,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-04 21:27:51,934 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-04 21:27:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-04 21:27:52,043 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-04 21:27:52,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-04 21:27:52,043 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-04 21:27:52,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-04 21:27:52,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-04 21:27:52,044 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2019-08-04 21:27:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-04 21:27:52,099 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-08-04 21:27:52,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-04 21:27:52,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-08-04 21:27:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-04 21:27:52,102 INFO L225 Difference]: With dead ends: 6 [2019-08-04 21:27:52,102 INFO L226 Difference]: Without dead ends: 0 [2019-08-04 21:27:52,103 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-04 21:27:52,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-04 21:27:52,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-04 21:27:52,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-04 21:27:52,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-04 21:27:52,104 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-08-04 21:27:52,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-04 21:27:52,105 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-04 21:27:52,105 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-04 21:27:52,105 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-04 21:27:52,105 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-04 21:27:52,110 INFO L202 PluginConnector]: Adding new model pals_lcr-var-start-time.4.ufo.BOUNDED-8.pals.c_10.bplTransformedIcfg_BEv2_23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 09:27:52 BoogieIcfgContainer [2019-08-04 21:27:52,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-04 21:27:52,113 INFO L168 Benchmark]: Toolchain (without parser) took 3016.57 ms. Allocated memory was 140.0 MB in the beginning and 178.8 MB in the end (delta: 38.8 MB). Free memory was 108.7 MB in the beginning and 93.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 53.6 MB. Max. memory is 7.1 GB. [2019-08-04 21:27:52,114 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory is still 110.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-04 21:27:52,115 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.24 ms. Allocated memory is still 140.0 MB. Free memory was 108.7 MB in the beginning and 106.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2019-08-04 21:27:52,116 INFO L168 Benchmark]: Boogie Preprocessor took 42.62 ms. Allocated memory is still 140.0 MB. Free memory was 106.6 MB in the beginning and 105.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-08-04 21:27:52,117 INFO L168 Benchmark]: RCFGBuilder took 1191.26 ms. Allocated memory was 140.0 MB in the beginning and 178.8 MB in the end (delta: 38.8 MB). Free memory was 105.3 MB in the beginning and 153.3 MB in the end (delta: -48.0 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2019-08-04 21:27:52,118 INFO L168 Benchmark]: TraceAbstraction took 1741.15 ms. Allocated memory is still 178.8 MB. Free memory was 153.3 MB in the beginning and 93.9 MB in the end (delta: 59.4 MB). Peak memory consumption was 59.4 MB. Max. memory is 7.1 GB. [2019-08-04 21:27:52,122 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory is still 110.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.24 ms. Allocated memory is still 140.0 MB. Free memory was 108.7 MB in the beginning and 106.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.62 ms. Allocated memory is still 140.0 MB. Free memory was 106.6 MB in the beginning and 105.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1191.26 ms. Allocated memory was 140.0 MB in the beginning and 178.8 MB in the end (delta: 38.8 MB). Free memory was 105.3 MB in the beginning and 153.3 MB in the end (delta: -48.0 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1741.15 ms. Allocated memory is still 178.8 MB. Free memory was 153.3 MB in the beginning and 93.9 MB in the end (delta: 59.4 MB). Peak memory consumption was 59.4 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10 SDtfs, 3 SDslu, 14 SDs, 0 SdLazy, 26 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 815 SizeOfPredicates, 35 NumberOfNonLiveVariables, 507 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...