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/nested_true-unreach-call.c_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2d08e6e [2018-10-15 12:35:59,909 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-15 12:35:59,911 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-15 12:35:59,924 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-15 12:35:59,924 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-15 12:35:59,926 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-15 12:35:59,928 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-15 12:35:59,929 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-15 12:35:59,931 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-15 12:35:59,932 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-15 12:35:59,933 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-15 12:35:59,958 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 12:35:59,973 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-15 12:35:59,973 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-15 12:35:59,974 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-15 12:35:59,974 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-15 12:35:59,974 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-15 12:35:59,975 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-15 12:35:59,975 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-15 12:35:59,975 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-15 12:35:59,976 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-15 12:35:59,976 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-15 12:35:59,976 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-15 12:35:59,976 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-15 12:35:59,976 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-15 12:35:59,977 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-15 12:35:59,977 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-15 12:36:00,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-15 12:36:00,049 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-15 12:36:00,055 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-15 12:36:00,057 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-15 12:36:00,057 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-15 12:36:00,058 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/nested_true-unreach-call.c_4.bpl [2018-10-15 12:36:00,058 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181015-LoopsPathprograms/nested_true-unreach-call.c_4.bpl' [2018-10-15 12:36:00,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-15 12:36:00,125 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-15 12:36:00,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-15 12:36:00,126 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-15 12:36:00,126 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-15 12:36:00,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:36:00" (1/1) ... [2018-10-15 12:36:00,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:36:00" (1/1) ... [2018-10-15 12:36:00,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:36:00" (1/1) ... [2018-10-15 12:36:00,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:36:00" (1/1) ... [2018-10-15 12:36:00,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:36:00" (1/1) ... [2018-10-15 12:36:00,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:36:00" (1/1) ... [2018-10-15 12:36:00,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:36:00" (1/1) ... [2018-10-15 12:36:00,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-15 12:36:00,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-15 12:36:00,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-15 12:36:00,179 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-15 12:36:00,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:36:00" (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 12:36:00,254 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-15 12:36:00,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-15 12:36:00,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-15 12:36:00,716 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-15 12:36:00,717 INFO L202 PluginConnector]: Adding new model nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:36:00 BoogieIcfgContainer [2018-10-15 12:36:00,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-15 12:36:00,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-15 12:36:00,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-15 12:36:00,722 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-15 12:36:00,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.10 12:36:00" (1/2) ... [2018-10-15 12:36:00,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d22b9c3 and model type nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:36:00, skipping insertion in model container [2018-10-15 12:36:00,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:36:00" (2/2) ... [2018-10-15 12:36:00,726 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_true-unreach-call.c_4.bpl [2018-10-15 12:36:00,737 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-15 12:36:00,745 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-15 12:36:00,763 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-15 12:36:00,794 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-15 12:36:00,795 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-15 12:36:00,795 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-15 12:36:00,796 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-15 12:36:00,796 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-15 12:36:00,796 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-15 12:36:00,796 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-15 12:36:00,796 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-15 12:36:00,797 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-15 12:36:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2018-10-15 12:36:00,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-10-15 12:36:00,834 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:36:00,835 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] [2018-10-15 12:36:00,839 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:36:00,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:36:00,853 INFO L82 PathProgramCache]: Analyzing trace with hash 14343706, now seen corresponding path program 1 times [2018-10-15 12:36:00,920 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:36:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:36:01,070 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 12:36:01,073 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 12:36:01,073 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-15 12:36:01,078 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-15 12:36:01,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-15 12:36:01,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 12:36:01,094 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2018-10-15 12:36:01,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:36:01,224 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-10-15 12:36:01,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-15 12:36:01,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2018-10-15 12:36:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:36:01,238 INFO L225 Difference]: With dead ends: 37 [2018-10-15 12:36:01,238 INFO L226 Difference]: Without dead ends: 37 [2018-10-15 12:36:01,240 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-15 12:36:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-15 12:36:01,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2018-10-15 12:36:01,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-15 12:36:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-10-15 12:36:01,280 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 28 [2018-10-15 12:36:01,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:36:01,281 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-10-15 12:36:01,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-15 12:36:01,281 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-10-15 12:36:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-15 12:36:01,282 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:36:01,282 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] [2018-10-15 12:36:01,283 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:36:01,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:36:01,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1744265434, now seen corresponding path program 1 times [2018-10-15 12:36:01,284 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:36:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:36:01,386 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 12:36:01,386 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 12:36:01,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2018-10-15 12:36:01,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-15 12:36:01,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-15 12:36:01,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-15 12:36:01,390 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 5 states. [2018-10-15 12:36:01,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:36:01,644 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2018-10-15 12:36:01,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-15 12:36:01,645 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2018-10-15 12:36:01,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:36:01,648 INFO L225 Difference]: With dead ends: 42 [2018-10-15 12:36:01,648 INFO L226 Difference]: Without dead ends: 42 [2018-10-15 12:36:01,649 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-15 12:36:01,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-10-15 12:36:01,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-10-15 12:36:01,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-15 12:36:01,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-10-15 12:36:01,655 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 33 [2018-10-15 12:36:01,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:36:01,656 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-10-15 12:36:01,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-15 12:36:01,656 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-10-15 12:36:01,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-15 12:36:01,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:36:01,657 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-15 12:36:01,658 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:36:01,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:36:01,658 INFO L82 PathProgramCache]: Analyzing trace with hash -523917926, now seen corresponding path program 2 times [2018-10-15 12:36:01,660 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:36:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:36:01,913 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 12:36:01,914 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 12:36:01,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-10-15 12:36:01,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-15 12:36:01,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-15 12:36:01,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-15 12:36:01,916 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 7 states. [2018-10-15 12:36:02,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:36:02,070 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-15 12:36:02,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-15 12:36:02,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-10-15 12:36:02,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:36:02,079 INFO L225 Difference]: With dead ends: 47 [2018-10-15 12:36:02,079 INFO L226 Difference]: Without dead ends: 47 [2018-10-15 12:36:02,080 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2018-10-15 12:36:02,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-10-15 12:36:02,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2018-10-15 12:36:02,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-10-15 12:36:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-10-15 12:36:02,092 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 38 [2018-10-15 12:36:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:36:02,094 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-10-15 12:36:02,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-15 12:36:02,095 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-10-15 12:36:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-15 12:36:02,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:36:02,098 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-15 12:36:02,099 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:36:02,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:36:02,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1993439322, now seen corresponding path program 3 times [2018-10-15 12:36:02,102 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:36:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:36:02,330 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 12:36:02,331 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-15 12:36:02,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-10-15 12:36:02,332 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-15 12:36:02,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-15 12:36:02,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-10-15 12:36:02,333 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 9 states. [2018-10-15 12:36:02,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:36:02,836 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2018-10-15 12:36:02,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-15 12:36:02,837 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2018-10-15 12:36:02,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:36:02,839 INFO L225 Difference]: With dead ends: 52 [2018-10-15 12:36:02,840 INFO L226 Difference]: Without dead ends: 52 [2018-10-15 12:36:02,840 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2018-10-15 12:36:02,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-10-15 12:36:02,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2018-10-15 12:36:02,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-10-15 12:36:02,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-10-15 12:36:02,847 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 43 [2018-10-15 12:36:02,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:36:02,847 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-10-15 12:36:02,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-15 12:36:02,848 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-10-15 12:36:02,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-15 12:36:02,849 INFO L367 BasicCegarLoop]: Found error trace [2018-10-15 12:36:02,849 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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 12:36:02,850 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-15 12:36:02,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-15 12:36:02,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1652749030, now seen corresponding path program 4 times [2018-10-15 12:36:02,851 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-15 12:36:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-15 12:36:03,337 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-10-15 12:36:03,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-15 12:36:03,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-15 12:36:03,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-15 12:36:03,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-15 12:36:03,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-10-15 12:36:03,339 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 11 states. [2018-10-15 12:36:03,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-15 12:36:03,695 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2018-10-15 12:36:03,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-15 12:36:03,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2018-10-15 12:36:03,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-15 12:36:03,696 INFO L225 Difference]: With dead ends: 47 [2018-10-15 12:36:03,696 INFO L226 Difference]: Without dead ends: 0 [2018-10-15 12:36:03,697 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2018-10-15 12:36:03,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-15 12:36:03,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-15 12:36:03,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-15 12:36:03,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-15 12:36:03,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2018-10-15 12:36:03,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-15 12:36:03,698 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-15 12:36:03,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-15 12:36:03,699 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-15 12:36:03,699 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-15 12:36:03,704 INFO L202 PluginConnector]: Adding new model nested_true-unreach-call.c_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:36:03 BoogieIcfgContainer [2018-10-15 12:36:03,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-15 12:36:03,705 INFO L168 Benchmark]: Toolchain (without parser) took 3581.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 158.6 MB). Peak memory consumption was 158.6 MB. Max. memory is 7.1 GB. [2018-10-15 12:36:03,707 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 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 12:36:03,708 INFO L168 Benchmark]: Boogie Preprocessor took 52.82 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 12:36:03,709 INFO L168 Benchmark]: RCFGBuilder took 538.42 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 12:36:03,710 INFO L168 Benchmark]: TraceAbstraction took 2985.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 137.5 MB). Peak memory consumption was 137.5 MB. Max. memory is 7.1 GB. [2018-10-15 12:36:03,714 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 0.23 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 52.82 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 538.42 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 2985.91 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 137.5 MB). Peak memory consumption was 137.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 61]: 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, 35 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 136 SDtfs, 78 SDslu, 397 SDs, 0 SdLazy, 226 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 185 ConstructedInterpolants, 0 QuantifiedInterpolants, 21582 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 34/60 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/nested_true-unreach-call.c_4.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-15_12-36-03-726.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/nested_true-unreach-call.c_4.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-15_12-36-03-726.csv Received shutdown request...