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/AutomizerBplTransformed.xml -s ../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf -i ../../../trunk/examples/programs/20181015-LoopsPathprograms/underapprox_true-unreach-call2_true-termination.i_3.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2d08e6e [2018-10-15 13:15:03,201 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 13:15:03,203 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 13:15:03,218 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-15 13:15:03,260 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 13:15:03,276 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 13:15:03,276 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 13:15:03,278 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 13:15:03,278 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 13:15:03,278 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 13:15:03,278 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 13:15:03,279 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 13:15:03,279 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 13:15:03,280 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 13:15:03,280 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 13:15:03,280 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 13:15:03,281 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 13:15:03,281 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 13:15:03,282 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 13:15:03,282 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 13:15:03,353 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 13:15:03,370 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 13:15:03,378 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 13:15:03,380 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 13:15:03,380 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 13:15:03,381 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/underapprox_true-unreach-call2_true-termination.i_3.bpl [2018-10-15 13:15:03,382 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/underapprox_true-unreach-call2_true-termination.i_3.bpl' [2018-10-15 13:15:03,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 13:15:03,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-10-15 13:15:03,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 13:15:03,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 13:15:03,434 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 13:15:03,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:15:03" (1/1) ... [2018-10-15 13:15:03,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:15:03" (1/1) ... [2018-10-15 13:15:03,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:15:03" (1/1) ... [2018-10-15 13:15:03,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:15:03" (1/1) ... [2018-10-15 13:15:03,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:15:03" (1/1) ... [2018-10-15 13:15:03,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:15:03" (1/1) ... [2018-10-15 13:15:03,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:15:03" (1/1) ... [2018-10-15 13:15:03,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 13:15:03,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 13:15:03,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 13:15:03,486 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 13:15:03,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:15:03" (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 13:15:03,572 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-15 13:15:03,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 13:15:03,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 13:15:03,861 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 13:15:03,862 INFO L202 PluginConnector]: Adding new model underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:03 BoogieIcfgContainer [2018-10-15 13:15:03,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 13:15:03,862 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2018-10-15 13:15:03,862 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2018-10-15 13:15:03,863 INFO L276 PluginConnector]: IcfgTransformer initialized [2018-10-15 13:15:03,867 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:03" (1/1) ... [2018-10-15 13:15:03,871 WARN L219 ansformationObserver]: HeapSeparator: input icfg has no '#valid' array -- returning unchanged Icfg! [2018-10-15 13:15:03,885 INFO L202 PluginConnector]: Adding new model underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 01:15:03 BasicIcfg [2018-10-15 13:15:03,885 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2018-10-15 13:15:03,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 13:15:03,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 13:15:03,889 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 13:15:03,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 01:15:03" (1/3) ... [2018-10-15 13:15:03,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173de9a2 and model type underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:15:03, skipping insertion in model container [2018-10-15 13:15:03,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:15:03" (2/3) ... [2018-10-15 13:15:03,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@173de9a2 and model type underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:15:03, skipping insertion in model container [2018-10-15 13:15:03,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 15.10 01:15:03" (3/3) ... [2018-10-15 13:15:03,893 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_true-unreach-call2_true-termination.i_3.bplleft_unchanged_by_heapseparator [2018-10-15 13:15:03,903 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 13:15:03,912 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 13:15:03,930 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 13:15:03,958 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 13:15:03,959 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 13:15:03,959 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 13:15:03,959 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 13:15:03,959 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 13:15:03,959 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 13:15:03,960 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 13:15:03,960 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 13:15:03,960 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 13:15:03,973 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-10-15 13:15:03,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-10-15 13:15:03,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 13:15:03,982 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 13:15:03,983 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 13:15:03,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 13:15:03,990 INFO L82 PathProgramCache]: Analyzing trace with hash 570541353, now seen corresponding path program 1 times [2018-10-15 13:15:04,039 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 13:15:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 13:15:04,260 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 13:15:04,263 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 13:15:04,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 13:15:04,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 13:15:04,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 13:15:04,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 13:15:04,289 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2018-10-15 13:15:04,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 13:15:04,386 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-10-15 13:15:04,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 13:15:04,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-10-15 13:15:04,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 13:15:04,400 INFO L225 Difference]: With dead ends: 18 [2018-10-15 13:15:04,400 INFO L226 Difference]: Without dead ends: 18 [2018-10-15 13:15:04,402 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 13:15:04,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-10-15 13:15:04,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-10-15 13:15:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-15 13:15:04,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-10-15 13:15:04,433 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2018-10-15 13:15:04,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 13:15:04,433 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-10-15 13:15:04,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 13:15:04,434 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-10-15 13:15:04,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-15 13:15:04,434 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 13:15:04,435 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 13:15:04,435 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 13:15:04,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 13:15:04,436 INFO L82 PathProgramCache]: Analyzing trace with hash 303616675, now seen corresponding path program 1 times [2018-10-15 13:15:04,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 13:15:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 13:15:04,830 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 13:15:04,832 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 13:15:04,833 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-15 13:15:04,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-15 13:15:04,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-15 13:15:04,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-15 13:15:04,836 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-10-15 13:15:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 13:15:05,008 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-10-15 13:15:05,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-15 13:15:05,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-10-15 13:15:05,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 13:15:05,011 INFO L225 Difference]: With dead ends: 23 [2018-10-15 13:15:05,011 INFO L226 Difference]: Without dead ends: 23 [2018-10-15 13:15:05,012 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-15 13:15:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-15 13:15:05,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-10-15 13:15:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-15 13:15:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-10-15 13:15:05,016 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2018-10-15 13:15:05,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 13:15:05,017 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-10-15 13:15:05,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-15 13:15:05,017 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-10-15 13:15:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-15 13:15:05,018 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 13:15:05,018 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 13:15:05,018 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 13:15:05,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 13:15:05,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1752096407, now seen corresponding path program 2 times [2018-10-15 13:15:05,020 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 13:15:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 13:15:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 13:15:05,429 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 13:15:05,429 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-15 13:15:05,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-15 13:15:05,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-15 13:15:05,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-15 13:15:05,431 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2018-10-15 13:15:05,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 13:15:05,744 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-10-15 13:15:05,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-15 13:15:05,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-10-15 13:15:05,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 13:15:05,746 INFO L225 Difference]: With dead ends: 28 [2018-10-15 13:15:05,746 INFO L226 Difference]: Without dead ends: 28 [2018-10-15 13:15:05,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-15 13:15:05,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-10-15 13:15:05,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-10-15 13:15:05,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-15 13:15:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-10-15 13:15:05,752 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 20 [2018-10-15 13:15:05,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 13:15:05,753 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-10-15 13:15:05,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-15 13:15:05,753 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-10-15 13:15:05,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-15 13:15:05,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 13:15:05,754 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 13:15:05,754 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 13:15:05,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 13:15:05,755 INFO L82 PathProgramCache]: Analyzing trace with hash 687414883, now seen corresponding path program 3 times [2018-10-15 13:15:05,756 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 13:15:05,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 13:15:06,003 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 13:15:06,003 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 13:15:06,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-15 13:15:06,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-15 13:15:06,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-15 13:15:06,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-15 13:15:06,005 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 9 states. [2018-10-15 13:15:06,410 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-10-15 13:15:06,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 13:15:06,656 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-10-15 13:15:06,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-15 13:15:06,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2018-10-15 13:15:06,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 13:15:06,661 INFO L225 Difference]: With dead ends: 33 [2018-10-15 13:15:06,661 INFO L226 Difference]: Without dead ends: 33 [2018-10-15 13:15:06,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-10-15 13:15:06,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-15 13:15:06,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2018-10-15 13:15:06,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-10-15 13:15:06,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-10-15 13:15:06,667 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2018-10-15 13:15:06,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 13:15:06,668 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-10-15 13:15:06,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-15 13:15:06,668 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-10-15 13:15:06,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-10-15 13:15:06,669 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 13:15:06,670 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 13:15:06,670 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 13:15:06,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 13:15:06,670 INFO L82 PathProgramCache]: Analyzing trace with hash 264908201, now seen corresponding path program 4 times [2018-10-15 13:15:06,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 13:15:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 13:15:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 13:15:06,912 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 13:15:06,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-15 13:15:06,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-15 13:15:06,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-15 13:15:06,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-15 13:15:06,914 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 11 states. [2018-10-15 13:15:07,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 13:15:07,327 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-10-15 13:15:07,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-15 13:15:07,329 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2018-10-15 13:15:07,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 13:15:07,330 INFO L225 Difference]: With dead ends: 38 [2018-10-15 13:15:07,330 INFO L226 Difference]: Without dead ends: 38 [2018-10-15 13:15:07,331 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2018-10-15 13:15:07,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-15 13:15:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2018-10-15 13:15:07,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-15 13:15:07,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-10-15 13:15:07,336 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 30 [2018-10-15 13:15:07,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 13:15:07,336 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-10-15 13:15:07,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-15 13:15:07,337 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-10-15 13:15:07,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-15 13:15:07,338 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 13:15:07,338 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 13:15:07,338 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 13:15:07,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 13:15:07,339 INFO L82 PathProgramCache]: Analyzing trace with hash -742540765, now seen corresponding path program 5 times [2018-10-15 13:15:07,340 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 13:15:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 13:15:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 13:15:07,558 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 13:15:07,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2018-10-15 13:15:07,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-15 13:15:07,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-15 13:15:07,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-10-15 13:15:07,560 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 13 states. [2018-10-15 13:15:08,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 13:15:08,050 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-10-15 13:15:08,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-15 13:15:08,051 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2018-10-15 13:15:08,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 13:15:08,052 INFO L225 Difference]: With dead ends: 43 [2018-10-15 13:15:08,052 INFO L226 Difference]: Without dead ends: 43 [2018-10-15 13:15:08,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=443, Unknown=0, NotChecked=0, Total=506 [2018-10-15 13:15:08,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-10-15 13:15:08,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-10-15 13:15:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-15 13:15:08,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-10-15 13:15:08,058 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 35 [2018-10-15 13:15:08,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 13:15:08,058 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-10-15 13:15:08,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-15 13:15:08,059 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-10-15 13:15:08,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-15 13:15:08,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 13:15:08,061 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-15 13:15:08,061 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 13:15:08,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 13:15:08,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1179707881, now seen corresponding path program 6 times [2018-10-15 13:15:08,064 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 13:15:08,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 13:15:08,700 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-15 13:15:08,700 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 13:15:08,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-10-15 13:15:08,701 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-15 13:15:08,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-15 13:15:08,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2018-10-15 13:15:08,702 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 18 states. [2018-10-15 13:15:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 13:15:09,373 INFO L93 Difference]: Finished difference Result 39 states and 38 transitions. [2018-10-15 13:15:09,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-15 13:15:09,373 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2018-10-15 13:15:09,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 13:15:09,374 INFO L225 Difference]: With dead ends: 39 [2018-10-15 13:15:09,374 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 13:15:09,376 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=897, Unknown=0, NotChecked=0, Total=992 [2018-10-15 13:15:09,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 13:15:09,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 13:15:09,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 13:15:09,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 13:15:09,377 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-10-15 13:15:09,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 13:15:09,377 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 13:15:09,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-15 13:15:09,377 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 13:15:09,377 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 13:15:09,382 INFO L202 PluginConnector]: Adding new model underapprox_true-unreach-call2_true-termination.i_3.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:15:09 BasicIcfg [2018-10-15 13:15:09,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 13:15:09,383 INFO L168 Benchmark]: Toolchain (without parser) took 5951.25 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 351.6 MB). Peak memory consumption was 351.6 MB. Max. memory is 7.1 GB. [2018-10-15 13:15:09,384 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.16 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 13:15:09,385 INFO L168 Benchmark]: Boogie Preprocessor took 51.02 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 13:15:09,386 INFO L168 Benchmark]: RCFGBuilder took 376.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-15 13:15:09,387 INFO L168 Benchmark]: IcfgTransformer took 22.67 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-15 13:15:09,388 INFO L168 Benchmark]: TraceAbstraction took 5496.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 330.5 MB). Peak memory consumption was 330.5 MB. Max. memory is 7.1 GB. [2018-10-15 13:15:09,392 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 0.16 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 51.02 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 376.29 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * IcfgTransformer took 22.67 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * TraceAbstraction took 5496.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 330.5 MB). Peak memory consumption was 330.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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, 17 locations, 1 error locations. SAFE Result, 5.4s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 2.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 115 SDtfs, 40 SDslu, 619 SDs, 0 SdLazy, 978 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 14 SyntacticMatches, 6 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=6, 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, 7 MinimizatonAttempts, 12 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 27277 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/196 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/underapprox_true-unreach-call2_true-termination.i_3.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-Benchmark-0-2018-10-15_13-15-09-404.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/underapprox_true-unreach-call2_true-termination.i_3.bpl_heapsep-2018-09-18.epf_AutomizerBplTransformed.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_13-15-09-404.csv Received shutdown request...