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/20181010-MemSafetyPathprograms/sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:51:54,954 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:51:54,956 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:51:54,973 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:51:54,974 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:51:54,975 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:51:54,976 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:51:54,978 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:51:54,979 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:51:54,981 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:51:54,982 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-14 16:51:55,004 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:51:55,014 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:51:55,014 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:51:55,015 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:51:55,015 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:51:55,015 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:51:55,015 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:51:55,016 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:51:55,016 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:51:55,016 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:51:55,017 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:51:55,017 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:51:55,017 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:51:55,017 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:51:55,018 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:51:55,018 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:51:55,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:51:55,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:51:55,077 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:51:55,078 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:51:55,079 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:51:55,079 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl [2018-10-14 16:51:55,080 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl' [2018-10-14 16:51:55,161 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:51:55,163 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:51:55,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:51:55,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:51:55,164 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:51:55,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:51:55" (1/1) ... [2018-10-14 16:51:55,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:51:55" (1/1) ... [2018-10-14 16:51:55,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:51:55" (1/1) ... [2018-10-14 16:51:55,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:51:55" (1/1) ... [2018-10-14 16:51:55,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:51:55" (1/1) ... [2018-10-14 16:51:55,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:51:55" (1/1) ... [2018-10-14 16:51:55,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:51:55" (1/1) ... [2018-10-14 16:51:55,251 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:51:55,252 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:51:55,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:51:55,256 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:51:55,257 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:51:55" (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 [2018-10-14 16:51:55,329 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:51:55,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:51:55,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:51:56,330 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:51:56,332 INFO L202 PluginConnector]: Adding new model sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:51:56 BoogieIcfgContainer [2018-10-14 16:51:56,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:51:56,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:51:56,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:51:56,337 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:51:56,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:51:55" (1/2) ... [2018-10-14 16:51:56,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5534755f and model type sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:51:56, skipping insertion in model container [2018-10-14 16:51:56,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:51:56" (2/2) ... [2018-10-14 16:51:56,341 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl [2018-10-14 16:51:56,351 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:51:56,360 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:51:56,380 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:51:56,410 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:51:56,411 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:51:56,411 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:51:56,411 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:51:56,412 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:51:56,412 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:51:56,412 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:51:56,412 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:51:56,412 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:51:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2018-10-14 16:51:56,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-14 16:51:56,454 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:56,456 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, 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, 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, 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] [2018-10-14 16:51:56,457 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:56,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:56,464 INFO L82 PathProgramCache]: Analyzing trace with hash 343449186, now seen corresponding path program 1 times [2018-10-14 16:51:56,530 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:51:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:51:57,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:51:57,691 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-14 16:51:57,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-14 16:51:57,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-14 16:51:57,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:51:57,717 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 10 states. [2018-10-14 16:51:58,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:51:58,754 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-10-14 16:51:58,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-14 16:51:58,756 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2018-10-14 16:51:58,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:51:58,774 INFO L225 Difference]: With dead ends: 216 [2018-10-14 16:51:58,774 INFO L226 Difference]: Without dead ends: 216 [2018-10-14 16:51:58,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2018-10-14 16:51:58,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-14 16:51:58,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 200. [2018-10-14 16:51:58,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-14 16:51:58,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-14 16:51:58,832 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 160 [2018-10-14 16:51:58,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:51:58,834 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-14 16:51:58,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-14 16:51:58,834 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-14 16:51:58,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-14 16:51:58,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:51:58,839 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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] [2018-10-14 16:51:58,840 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:51:58,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:51:58,840 INFO L82 PathProgramCache]: Analyzing trace with hash -4084199, now seen corresponding path program 1 times [2018-10-14 16:51:58,841 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:51:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:00,076 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2018-10-14 16:52:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:03,137 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:03,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-14 16:52:03,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-14 16:52:03,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-14 16:52:03,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2193, Unknown=0, NotChecked=0, Total=2352 [2018-10-14 16:52:03,142 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 49 states. [2018-10-14 16:52:05,355 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-14 16:52:05,814 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-14 16:52:06,161 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2018-10-14 16:52:06,456 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2018-10-14 16:52:06,727 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2018-10-14 16:52:07,162 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2018-10-14 16:52:07,404 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-14 16:52:07,787 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2018-10-14 16:52:08,000 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-14 16:52:09,744 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-14 16:52:09,923 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-14 16:52:10,278 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-14 16:52:10,612 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2018-10-14 16:52:10,886 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-14 16:52:11,075 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2018-10-14 16:52:15,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:15,114 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-14 16:52:15,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-14 16:52:15,120 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 199 [2018-10-14 16:52:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:15,123 INFO L225 Difference]: With dead ends: 255 [2018-10-14 16:52:15,123 INFO L226 Difference]: Without dead ends: 255 [2018-10-14 16:52:15,129 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2506 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=1331, Invalid=9799, Unknown=0, NotChecked=0, Total=11130 [2018-10-14 16:52:15,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-14 16:52:15,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 239. [2018-10-14 16:52:15,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-14 16:52:15,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-14 16:52:15,145 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 199 [2018-10-14 16:52:15,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:15,145 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-14 16:52:15,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-14 16:52:15,146 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-14 16:52:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-14 16:52:15,150 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:15,150 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:52:15,151 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:15,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:15,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1809641090, now seen corresponding path program 2 times [2018-10-14 16:52:15,152 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:18,667 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:18,668 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:18,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-14 16:52:18,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-14 16:52:18,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-14 16:52:18,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=3006, Unknown=0, NotChecked=0, Total=3192 [2018-10-14 16:52:18,671 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 57 states. [2018-10-14 16:52:20,494 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-10-14 16:52:20,665 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-14 16:52:20,860 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-14 16:52:21,021 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-14 16:52:21,244 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-14 16:52:21,438 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-10-14 16:52:21,867 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-14 16:52:22,103 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2018-10-14 16:52:22,358 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2018-10-14 16:52:22,917 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-10-14 16:52:23,534 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-14 16:52:23,967 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:52:24,168 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-14 16:52:24,534 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:52:24,820 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-14 16:52:25,089 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2018-10-14 16:52:25,418 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-10-14 16:52:25,696 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2018-10-14 16:52:25,995 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 89 [2018-10-14 16:52:26,177 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2018-10-14 16:52:26,745 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-14 16:52:27,052 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2018-10-14 16:52:27,957 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-14 16:52:29,879 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2018-10-14 16:52:30,462 WARN L179 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-14 16:52:31,992 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-10-14 16:52:32,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:32,608 INFO L93 Difference]: Finished difference Result 294 states and 294 transitions. [2018-10-14 16:52:32,609 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-14 16:52:32,609 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 238 [2018-10-14 16:52:32,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:32,613 INFO L225 Difference]: With dead ends: 294 [2018-10-14 16:52:32,614 INFO L226 Difference]: Without dead ends: 294 [2018-10-14 16:52:32,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3997 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1524, Invalid=14732, Unknown=0, NotChecked=0, Total=16256 [2018-10-14 16:52:32,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-10-14 16:52:32,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 278. [2018-10-14 16:52:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-10-14 16:52:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2018-10-14 16:52:32,647 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 238 [2018-10-14 16:52:32,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:32,648 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2018-10-14 16:52:32,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-14 16:52:32,648 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2018-10-14 16:52:32,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-14 16:52:32,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:32,659 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:52:32,660 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:32,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:32,661 INFO L82 PathProgramCache]: Analyzing trace with hash 518093305, now seen corresponding path program 3 times [2018-10-14 16:52:32,664 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:32,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:52:34,410 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-10-14 16:52:34,793 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-10-14 16:52:36,666 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-10-14 16:52:38,569 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-10-14 16:52:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:52:39,317 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:52:39,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-14 16:52:39,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-14 16:52:39,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-14 16:52:39,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=4209, Unknown=0, NotChecked=0, Total=4422 [2018-10-14 16:52:39,320 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand 67 states. [2018-10-14 16:52:41,533 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-14 16:52:41,746 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-14 16:52:41,919 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-14 16:52:42,172 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-14 16:52:42,479 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-10-14 16:52:42,917 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-14 16:52:43,145 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2018-10-14 16:52:43,937 WARN L179 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2018-10-14 16:52:45,650 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-14 16:52:45,888 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-14 16:52:46,232 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-14 16:52:46,513 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2018-10-14 16:52:46,782 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2018-10-14 16:52:47,152 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2018-10-14 16:52:47,480 WARN L179 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2018-10-14 16:52:47,850 WARN L179 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 83 [2018-10-14 16:52:48,582 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-14 16:52:48,804 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2018-10-14 16:52:49,068 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-10-14 16:52:50,076 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2018-10-14 16:52:50,303 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2018-10-14 16:52:50,516 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2018-10-14 16:52:51,229 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2018-10-14 16:52:51,507 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2018-10-14 16:52:51,987 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2018-10-14 16:52:52,179 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-14 16:52:52,404 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-14 16:52:52,848 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2018-10-14 16:52:53,110 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2018-10-14 16:52:57,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:52:57,017 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-10-14 16:52:57,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-14 16:52:57,018 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 277 [2018-10-14 16:52:57,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:52:57,021 INFO L225 Difference]: With dead ends: 333 [2018-10-14 16:52:57,021 INFO L226 Difference]: Without dead ends: 333 [2018-10-14 16:52:57,028 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5750 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=1774, Invalid=21788, Unknown=0, NotChecked=0, Total=23562 [2018-10-14 16:52:57,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-14 16:52:57,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 317. [2018-10-14 16:52:57,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-14 16:52:57,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-14 16:52:57,039 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 277 [2018-10-14 16:52:57,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:52:57,040 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-14 16:52:57,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-14 16:52:57,040 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-14 16:52:57,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-14 16:52:57,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:52:57,045 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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] [2018-10-14 16:52:57,045 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:52:57,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:52:57,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1877899614, now seen corresponding path program 4 times [2018-10-14 16:52:57,046 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:52:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:53:01,374 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 150 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:53:01,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:53:01,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-14 16:53:01,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-14 16:53:01,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-14 16:53:01,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3988, Unknown=0, NotChecked=0, Total=4160 [2018-10-14 16:53:01,377 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 65 states. [2018-10-14 16:53:03,705 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-14 16:53:03,913 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-14 16:53:04,073 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-14 16:53:04,309 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-14 16:53:04,521 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-10-14 16:53:04,902 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-14 16:53:05,108 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-14 16:53:06,596 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-14 16:53:06,909 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-10-14 16:53:07,130 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-14 16:53:07,379 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-14 16:53:07,826 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2018-10-14 16:53:08,189 WARN L179 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2018-10-14 16:53:08,912 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-14 16:53:09,123 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-10-14 16:53:11,042 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2018-10-14 16:53:12,186 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2018-10-14 16:53:12,401 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-14 16:53:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:53:16,586 INFO L93 Difference]: Finished difference Result 284 states and 283 transitions. [2018-10-14 16:53:16,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-14 16:53:16,587 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 316 [2018-10-14 16:53:16,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:53:16,588 INFO L225 Difference]: With dead ends: 284 [2018-10-14 16:53:16,588 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:53:16,590 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5380 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=1398, Invalid=20358, Unknown=0, NotChecked=0, Total=21756 [2018-10-14 16:53:16,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:53:16,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:53:16,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:53:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:53:16,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 316 [2018-10-14 16:53:16,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:53:16,592 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:53:16,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-14 16:53:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:53:16,592 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:53:16,597 INFO L202 PluginConnector]: Adding new model sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:53:16 BoogieIcfgContainer [2018-10-14 16:53:16,597 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:53:16,598 INFO L168 Benchmark]: Toolchain (without parser) took 81436.71 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 606.6 MB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -432.7 MB). Peak memory consumption was 173.9 MB. Max. memory is 7.1 GB. [2018-10-14 16:53:16,599 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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. [2018-10-14 16:53:16,600 INFO L168 Benchmark]: Boogie Preprocessor took 88.44 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. [2018-10-14 16:53:16,600 INFO L168 Benchmark]: RCFGBuilder took 1079.57 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-14 16:53:16,601 INFO L168 Benchmark]: TraceAbstraction took 80264.08 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 606.6 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -485.6 MB). Peak memory consumption was 121.0 MB. Max. memory is 7.1 GB. [2018-10-14 16:53:16,605 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 0.19 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 88.44 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 1079.57 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 80264.08 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 606.6 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -485.6 MB). Peak memory consumption was 121.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 277]: 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, 177 locations, 1 error locations. SAFE Result, 80.1s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 59.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 546 SDtfs, 7235 SDslu, 11763 SDs, 0 SdLazy, 23212 SolverSat, 623 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 587 GetRequests, 30 SyntacticMatches, 13 SemanticMatches, 544 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17660 ImplicationChecksByTransitivity, 52.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=317occurred 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, 64 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 18.4s InterpolantComputationTime, 1190 NumberOfCodeBlocks, 1190 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1185 ConstructedInterpolants, 0 QuantifiedInterpolants, 5568420 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 150/640 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/sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-53-16-615.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-53-16-615.csv Received shutdown request...