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/scalable/CTR_8bitCounter-correct.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b8c145f [2019-08-05 10:52:23,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 10:52:23,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 10:52:23,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 10:52:23,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 10:52:23,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 10:52:23,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 10:52:23,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 10:52:23,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 10:52:23,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 10:52:23,960 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 10:52:23,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 10:52:23,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 10:52:23,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 10:52:23,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 10:52:23,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 10:52:23,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 10:52:23,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 10:52:23,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 10:52:23,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 10:52:23,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 10:52:23,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 10:52:23,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 10:52:23,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 10:52:23,977 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 10:52:23,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 10:52:23,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 10:52:23,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 10:52:23,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 10:52:23,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 10:52:23,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 10:52:23,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 10:52:23,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 10:52:23,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 10:52:23,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 10:52:23,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 10:52:24,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 10:52:24,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 10:52:24,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 10:52:24,045 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 10:52:24,045 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 10:52:24,046 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/scalable/CTR_8bitCounter-correct.bpl [2019-08-05 10:52:24,046 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/scalable/CTR_8bitCounter-correct.bpl' [2019-08-05 10:52:24,084 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 10:52:24,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-05 10:52:24,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-08-05 10:52:24,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-08-05 10:52:24,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-08-05 10:52:24,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:52:24" (1/1) ... [2019-08-05 10:52:24,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:52:24" (1/1) ... [2019-08-05 10:52:24,120 WARN L165 Inliner]: Program contained no entry procedure! [2019-08-05 10:52:24,121 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-08-05 10:52:24,121 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-08-05 10:52:24,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-08-05 10:52:24,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 10:52:24,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 10:52:24,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 10:52:24,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:52:24" (1/1) ... [2019-08-05 10:52:24,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:52:24" (1/1) ... [2019-08-05 10:52:24,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:52:24" (1/1) ... [2019-08-05 10:52:24,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:52:24" (1/1) ... [2019-08-05 10:52:24,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:52:24" (1/1) ... [2019-08-05 10:52:24,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:52:24" (1/1) ... [2019-08-05 10:52:24,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:52:24" (1/1) ... [2019-08-05 10:52:24,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 10:52:24,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 10:52:24,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 10:52:24,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 10:52:24,156 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:52:24" (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 [2019-08-05 10:52:24,223 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Counter given in one single declaration [2019-08-05 10:52:24,223 INFO L130 BoogieDeclarations]: Found specification of procedure Counter [2019-08-05 10:52:24,224 INFO L138 BoogieDeclarations]: Found implementation of procedure Counter [2019-08-05 10:52:25,104 INFO L275 CfgBuilder]: Using library mode [2019-08-05 10:52:25,104 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 10:52:25,105 INFO L202 PluginConnector]: Adding new model CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:52:25 BoogieIcfgContainer [2019-08-05 10:52:25,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 10:52:25,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-08-05 10:52:25,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-08-05 10:52:25,110 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-08-05 10:52:25,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 10:52:24" (1/2) ... [2019-08-05 10:52:25,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b414fc2 and model type CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.08 10:52:25, skipping insertion in model container [2019-08-05 10:52:25,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 10:52:25" (2/2) ... [2019-08-05 10:52:25,114 INFO L109 eAbstractionObserver]: Analyzing ICFG CTR_8bitCounter-correct.bpl [2019-08-05 10:52:25,123 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2019-08-05 10:52:25,131 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-08-05 10:52:25,145 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-08-05 10:52:25,169 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-08-05 10:52:25,170 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-08-05 10:52:25,170 INFO L378 AbstractCegarLoop]: Hoare is false [2019-08-05 10:52:25,170 INFO L379 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2019-08-05 10:52:25,170 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-08-05 10:52:25,170 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-08-05 10:52:25,171 INFO L382 AbstractCegarLoop]: Difference is false [2019-08-05 10:52:25,171 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-08-05 10:52:25,171 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-08-05 10:52:25,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states. [2019-08-05 10:52:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-08-05 10:52:25,193 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:52:25,194 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-08-05 10:52:25,196 INFO L418 AbstractCegarLoop]: === Iteration 1 === [CounterErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:52:25,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:52:25,202 INFO L82 PathProgramCache]: Analyzing trace with hash 31296, now seen corresponding path program 1 times [2019-08-05 10:52:25,251 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:52:25,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:52:25,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 3 conjunts are in the unsatisfiable core [2019-08-05 10:52:25,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:52:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:52:25,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-08-05 10:52:25,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-08-05 10:52:25,373 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-08-05 10:52:25,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-08-05 10:52:25,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:52:25,389 INFO L87 Difference]: Start difference. First operand 5 states. Second operand 3 states. [2019-08-05 10:52:25,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:52:25,475 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-08-05 10:52:25,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-08-05 10:52:25,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-08-05 10:52:25,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:52:25,492 INFO L225 Difference]: With dead ends: 6 [2019-08-05 10:52:25,493 INFO L226 Difference]: Without dead ends: 5 [2019-08-05 10:52:25,497 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-08-05 10:52:25,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states. [2019-08-05 10:52:25,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2019-08-05 10:52:25,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2019-08-05 10:52:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2019-08-05 10:52:25,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states and 5 transitions. Word has length 3 [2019-08-05 10:52:25,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:52:25,557 INFO L475 AbstractCegarLoop]: Abstraction has 5 states and 5 transitions. [2019-08-05 10:52:25,558 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-08-05 10:52:25,558 INFO L276 IsEmpty]: Start isEmpty. Operand 5 states and 5 transitions. [2019-08-05 10:52:25,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-08-05 10:52:25,558 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:52:25,559 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-08-05 10:52:25,559 INFO L418 AbstractCegarLoop]: === Iteration 2 === [CounterErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:52:25,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:52:25,560 INFO L82 PathProgramCache]: Analyzing trace with hash 989413, now seen corresponding path program 1 times [2019-08-05 10:52:25,561 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:52:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:52:25,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2019-08-05 10:52:25,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:52:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:52:25,680 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:52:25,680 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2019-08-05 10:52:25,682 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-08-05 10:52:25,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-08-05 10:52:25,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:52:25,683 INFO L87 Difference]: Start difference. First operand 5 states and 5 transitions. Second operand 4 states. [2019-08-05 10:52:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:52:25,800 INFO L93 Difference]: Finished difference Result 6 states and 6 transitions. [2019-08-05 10:52:25,800 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-08-05 10:52:25,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-08-05 10:52:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:52:25,801 INFO L225 Difference]: With dead ends: 6 [2019-08-05 10:52:25,801 INFO L226 Difference]: Without dead ends: 6 [2019-08-05 10:52:25,803 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-08-05 10:52:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2019-08-05 10:52:25,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-08-05 10:52:25,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-08-05 10:52:25,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-08-05 10:52:25,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2019-08-05 10:52:25,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:52:25,806 INFO L475 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-08-05 10:52:25,806 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-08-05 10:52:25,806 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2019-08-05 10:52:25,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-08-05 10:52:25,807 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:52:25,807 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1] [2019-08-05 10:52:25,807 INFO L418 AbstractCegarLoop]: === Iteration 3 === [CounterErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:52:25,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:52:25,808 INFO L82 PathProgramCache]: Analyzing trace with hash 30691040, now seen corresponding path program 2 times [2019-08-05 10:52:25,809 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:52:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:52:25,886 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 9 conjunts are in the unsatisfiable core [2019-08-05 10:52:25,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:52:26,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:52:26,017 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:52:26,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-08-05 10:52:26,018 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-08-05 10:52:26,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-08-05 10:52:26,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-08-05 10:52:26,019 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 5 states. [2019-08-05 10:52:26,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:52:26,129 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-05 10:52:26,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:52:26,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-08-05 10:52:26,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:52:26,131 INFO L225 Difference]: With dead ends: 7 [2019-08-05 10:52:26,131 INFO L226 Difference]: Without dead ends: 7 [2019-08-05 10:52:26,132 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-08-05 10:52:26,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-08-05 10:52:26,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-08-05 10:52:26,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-08-05 10:52:26,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-08-05 10:52:26,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-08-05 10:52:26,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:52:26,134 INFO L475 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-08-05 10:52:26,134 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-08-05 10:52:26,134 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-08-05 10:52:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-08-05 10:52:26,135 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:52:26,135 INFO L399 BasicCegarLoop]: trace histogram [3, 1, 1, 1] [2019-08-05 10:52:26,136 INFO L418 AbstractCegarLoop]: === Iteration 4 === [CounterErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:52:26,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:52:26,136 INFO L82 PathProgramCache]: Analyzing trace with hash 951441477, now seen corresponding path program 3 times [2019-08-05 10:52:26,137 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:52:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:52:26,180 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2019-08-05 10:52:26,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:52:26,449 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2019-08-05 10:52:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:52:26,517 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:52:26,517 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-08-05 10:52:26,518 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-08-05 10:52:26,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-08-05 10:52:26,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-08-05 10:52:26,519 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 6 states. [2019-08-05 10:52:26,742 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2019-08-05 10:52:26,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:52:26,772 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2019-08-05 10:52:26,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-08-05 10:52:26,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-08-05 10:52:26,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:52:26,773 INFO L225 Difference]: With dead ends: 8 [2019-08-05 10:52:26,773 INFO L226 Difference]: Without dead ends: 8 [2019-08-05 10:52:26,774 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-08-05 10:52:26,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-08-05 10:52:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-08-05 10:52:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-08-05 10:52:26,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-08-05 10:52:26,776 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-08-05 10:52:26,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:52:26,776 INFO L475 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-08-05 10:52:26,776 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-08-05 10:52:26,776 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-08-05 10:52:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-08-05 10:52:26,777 INFO L391 BasicCegarLoop]: Found error trace [2019-08-05 10:52:26,777 INFO L399 BasicCegarLoop]: trace histogram [4, 1, 1, 1] [2019-08-05 10:52:26,777 INFO L418 AbstractCegarLoop]: === Iteration 5 === [CounterErr0ASSERT_VIOLATIONASSERT]=== [2019-08-05 10:52:26,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-08-05 10:52:26,778 INFO L82 PathProgramCache]: Analyzing trace with hash -570066048, now seen corresponding path program 4 times [2019-08-05 10:52:26,779 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2019-08-05 10:52:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-08-05 10:52:26,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 10 conjunts are in the unsatisfiable core [2019-08-05 10:52:26,825 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-08-05 10:52:27,310 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2019-08-05 10:52:27,321 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:52:27,327 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:52:27,329 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:52:27,332 INFO L320 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-08-05 10:52:27,554 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-08-05 10:52:27,776 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 25 [2019-08-05 10:52:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-08-05 10:52:27,780 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-08-05 10:52:27,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-08-05 10:52:27,780 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-08-05 10:52:27,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-08-05 10:52:27,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-08-05 10:52:27,781 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states. [2019-08-05 10:52:27,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-08-05 10:52:27,820 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-08-05 10:52:27,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-08-05 10:52:27,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7 [2019-08-05 10:52:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-08-05 10:52:27,821 INFO L225 Difference]: With dead ends: 7 [2019-08-05 10:52:27,821 INFO L226 Difference]: Without dead ends: 0 [2019-08-05 10:52:27,822 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-08-05 10:52:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-08-05 10:52:27,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-08-05 10:52:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-08-05 10:52:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-08-05 10:52:27,823 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-08-05 10:52:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-08-05 10:52:27,823 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-08-05 10:52:27,823 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-08-05 10:52:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-08-05 10:52:27,823 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-08-05 10:52:27,827 INFO L202 PluginConnector]: Adding new model CTR_8bitCounter-correct.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.08 10:52:27 BoogieIcfgContainer [2019-08-05 10:52:27,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-08-05 10:52:27,829 INFO L168 Benchmark]: Toolchain (without parser) took 3743.31 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 107.8 MB in the beginning and 163.0 MB in the end (delta: -55.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. [2019-08-05 10:52:27,830 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 109.0 MB in the beginning and 108.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 10:52:27,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.93 ms. Allocated memory is still 140.5 MB. Free memory was 107.8 MB in the beginning and 105.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2019-08-05 10:52:27,832 INFO L168 Benchmark]: Boogie Preprocessor took 29.00 ms. Allocated memory is still 140.5 MB. Free memory was 105.8 MB in the beginning and 104.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-08-05 10:52:27,833 INFO L168 Benchmark]: RCFGBuilder took 951.53 ms. Allocated memory is still 140.5 MB. Free memory was 104.6 MB in the beginning and 77.7 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2019-08-05 10:52:27,834 INFO L168 Benchmark]: TraceAbstraction took 2720.41 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 77.5 MB in the beginning and 163.0 MB in the end (delta: -85.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 10:52:27,838 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 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 109.0 MB in the beginning and 108.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 36.93 ms. Allocated memory is still 140.5 MB. Free memory was 107.8 MB in the beginning and 105.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.00 ms. Allocated memory is still 140.5 MB. Free memory was 105.8 MB in the beginning and 104.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 951.53 ms. Allocated memory is still 140.5 MB. Free memory was 104.6 MB in the beginning and 77.7 MB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2720.41 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 77.5 MB in the beginning and 163.0 MB in the end (delta: -85.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 49]: 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, 5 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 4 SDslu, 2 SDs, 0 SdLazy, 50 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=4, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 2060 SizeOfPredicates, 11 NumberOfNonLiveVariables, 130 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 5/20 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...