java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181015-LoopsPathprograms/mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2d08e6e [2018-10-15 12:35:40,380 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 12:35:40,383 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 12:35:40,396 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 12:35:40,397 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 12:35:40,398 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 12:35:40,399 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 12:35:40,401 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 12:35:40,403 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 12:35:40,403 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 12:35:40,404 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-15 12:35:40,432 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-15 12:35:40,448 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 12:35:40,448 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 12:35:40,449 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 12:35:40,449 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 12:35:40,449 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 12:35:40,449 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 12:35:40,450 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 12:35:40,450 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 12:35:40,451 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 12:35:40,451 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 12:35:40,451 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 12:35:40,452 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 12:35:40,452 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 12:35:40,453 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 12:35:40,453 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 12:35:40,513 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 12:35:40,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 12:35:40,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 12:35:40,532 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 12:35:40,533 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 12:35:40,534 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl [2018-10-15 12:35:40,534 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl' [2018-10-15 12:35:40,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 12:35:40,609 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 12:35:40,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 12:35:40,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 12:35:40,610 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 12:35:40,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:40" (1/1) ... [2018-10-15 12:35:40,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:40" (1/1) ... [2018-10-15 12:35:40,656 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:40" (1/1) ... [2018-10-15 12:35:40,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:40" (1/1) ... [2018-10-15 12:35:40,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:40" (1/1) ... [2018-10-15 12:35:40,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:40" (1/1) ... [2018-10-15 12:35:40,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:40" (1/1) ... [2018-10-15 12:35:40,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 12:35:40,676 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 12:35:40,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 12:35:40,677 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 12:35:40,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:40" (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 [2018-10-15 12:35:40,756 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-15 12:35:40,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 12:35:40,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 12:35:41,213 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 12:35:41,214 INFO L202 PluginConnector]: Adding new model mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:35:41 BoogieIcfgContainer [2018-10-15 12:35:41,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 12:35:41,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 12:35:41,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 12:35:41,219 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 12:35:41,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:35:40" (1/2) ... [2018-10-15 12:35:41,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53151958 and model type mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:35:41, skipping insertion in model container [2018-10-15 12:35:41,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:35:41" (2/2) ... [2018-10-15 12:35:41,222 INFO L112 eAbstractionObserver]: Analyzing ICFG mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl [2018-10-15 12:35:41,232 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 12:35:41,241 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 12:35:41,259 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 12:35:41,284 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 12:35:41,285 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 12:35:41,285 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 12:35:41,285 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 12:35:41,285 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 12:35:41,285 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 12:35:41,285 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 12:35:41,286 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 12:35:41,286 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 12:35:41,301 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-10-15 12:35:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-15 12:35:41,311 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:35:41,312 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 12:35:41,313 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:35:41,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:35:41,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1805271269, now seen corresponding path program 1 times [2018-10-15 12:35:41,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:35:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:35:41,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 12:35:41,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 12:35:41,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-15 12:35:41,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-15 12:35:41,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-15 12:35:41,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-15 12:35:41,578 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2018-10-15 12:35:41,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:35:41,759 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2018-10-15 12:35:41,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-15 12:35:41,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-10-15 12:35:41,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:35:41,781 INFO L225 Difference]: With dead ends: 49 [2018-10-15 12:35:41,781 INFO L226 Difference]: Without dead ends: 47 [2018-10-15 12:35:41,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-15 12:35:41,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-15 12:35:41,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2018-10-15 12:35:41,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-15 12:35:41,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-15 12:35:41,836 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 32 [2018-10-15 12:35:41,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:35:41,837 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-15 12:35:41,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-15 12:35:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-15 12:35:41,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-15 12:35:41,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:35:41,839 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 12:35:41,839 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:35:41,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:35:41,841 INFO L82 PathProgramCache]: Analyzing trace with hash -1185675233, now seen corresponding path program 1 times [2018-10-15 12:35:41,843 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:35:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:35:42,618 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-15 12:35:42,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 12:35:42,785 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 12:35:42,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2018-10-15 12:35:42,787 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-15 12:35:42,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-15 12:35:42,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-10-15 12:35:42,789 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 14 states. [2018-10-15 12:35:43,045 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-15 12:35:43,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:35:43,947 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2018-10-15 12:35:43,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-15 12:35:43,948 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2018-10-15 12:35:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:35:43,949 INFO L225 Difference]: With dead ends: 62 [2018-10-15 12:35:43,950 INFO L226 Difference]: Without dead ends: 52 [2018-10-15 12:35:43,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2018-10-15 12:35:43,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-15 12:35:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-10-15 12:35:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-15 12:35:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-15 12:35:43,959 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 40 [2018-10-15 12:35:43,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:35:43,960 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-15 12:35:43,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-15 12:35:43,960 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-15 12:35:43,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-15 12:35:43,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:35:43,962 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 12:35:43,967 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:35:43,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:35:43,967 INFO L82 PathProgramCache]: Analyzing trace with hash -453309149, now seen corresponding path program 2 times [2018-10-15 12:35:43,969 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:35:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:35:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 12:35:44,799 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 12:35:44,800 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2018-10-15 12:35:44,800 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-15 12:35:44,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-15 12:35:44,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2018-10-15 12:35:44,802 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 19 states. [2018-10-15 12:35:46,018 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-10-15 12:35:46,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:35:46,180 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2018-10-15 12:35:46,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-10-15 12:35:46,180 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2018-10-15 12:35:46,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:35:46,182 INFO L225 Difference]: With dead ends: 70 [2018-10-15 12:35:46,182 INFO L226 Difference]: Without dead ends: 60 [2018-10-15 12:35:46,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=287, Invalid=1119, Unknown=0, NotChecked=0, Total=1406 [2018-10-15 12:35:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-15 12:35:46,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2018-10-15 12:35:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-10-15 12:35:46,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2018-10-15 12:35:46,191 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 48 [2018-10-15 12:35:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:35:46,191 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2018-10-15 12:35:46,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-10-15 12:35:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2018-10-15 12:35:46,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-10-15 12:35:46,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:35:46,194 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 12:35:46,194 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:35:46,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:35:46,195 INFO L82 PathProgramCache]: Analyzing trace with hash 551472679, now seen corresponding path program 3 times [2018-10-15 12:35:46,196 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:35:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:35:47,116 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 12:35:47,117 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 12:35:47,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2018-10-15 12:35:47,117 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-15 12:35:47,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-15 12:35:47,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2018-10-15 12:35:47,119 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 23 states. [2018-10-15 12:35:48,029 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 28 [2018-10-15 12:35:48,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:35:48,738 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2018-10-15 12:35:48,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-15 12:35:48,739 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 56 [2018-10-15 12:35:48,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:35:48,740 INFO L225 Difference]: With dead ends: 55 [2018-10-15 12:35:48,740 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 12:35:48,741 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=406, Invalid=1486, Unknown=0, NotChecked=0, Total=1892 [2018-10-15 12:35:48,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 12:35:48,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 12:35:48,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 12:35:48,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 12:35:48,742 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2018-10-15 12:35:48,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:35:48,742 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 12:35:48,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-15 12:35:48,743 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 12:35:48,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 12:35:48,748 INFO L202 PluginConnector]: Adding new model mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:35:48 BoogieIcfgContainer [2018-10-15 12:35:48,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 12:35:48,749 INFO L168 Benchmark]: Toolchain (without parser) took 8141.80 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 17.8 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 85.2 MB). Peak memory consumption was 103.1 MB. Max. memory is 7.1 GB. [2018-10-15 12:35:48,751 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 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. [2018-10-15 12:35:48,751 INFO L168 Benchmark]: Boogie Preprocessor took 60.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 12:35:48,752 INFO L168 Benchmark]: RCFGBuilder took 537.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-15 12:35:48,753 INFO L168 Benchmark]: TraceAbstraction took 7533.26 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 17.8 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 64.1 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2018-10-15 12:35:48,757 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 0.17 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 60.18 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 537.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7533.26 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 17.8 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 64.1 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: 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, 42 locations, 1 error locations. SAFE Result, 7.4s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 4.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 124 SDtfs, 571 SDslu, 760 SDs, 0 SdLazy, 681 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred 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, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 176 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 172 ConstructedInterpolants, 0 QuantifiedInterpolants, 53650 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 4/38 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/mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_12-35-48-768.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/mcmillan2006_true-unreach-call_true-termination.c.i_3.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_12-35-48-768.csv Received shutdown request...