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-b8f97f7-m [2018-10-10 15:44:29,694 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:44:29,696 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:44:29,711 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:44:29,711 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:44:29,712 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:44:29,714 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:44:29,715 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:44:29,717 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:44:29,718 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:44:29,718 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 15:44:29,719 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 15:44:29,720 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 15:44:29,721 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 15:44:29,722 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 15:44:29,723 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 15:44:29,723 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 15:44:29,725 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 15:44:29,729 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 15:44:29,735 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 15:44:29,736 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 15:44:29,738 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 15:44:29,740 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 15:44:29,753 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:44:29,768 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:44:29,769 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:44:29,773 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:44:29,773 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:44:29,773 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:44:29,773 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:44:29,774 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:44:29,774 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:44:29,774 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:44:29,775 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:44:29,775 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:44:29,775 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:44:29,775 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:44:29,776 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:44:29,776 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:44:29,829 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:44:29,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:44:29,846 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:44:29,848 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:44:29,848 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:44:29,849 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl [2018-10-10 15:44:29,849 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl' [2018-10-10 15:44:29,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:44:29,944 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:44:29,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:44:29,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:44:29,945 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:44:29,972 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 10.10 03:44:29" (1/1) ... [2018-10-10 15:44:29,974 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 10.10 03:44:29" (1/1) ... [2018-10-10 15:44:29,999 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 10.10 03:44:29" (1/1) ... [2018-10-10 15:44:30,000 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 10.10 03:44:29" (1/1) ... [2018-10-10 15:44:30,015 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 10.10 03:44:29" (1/1) ... [2018-10-10 15:44:30,020 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 10.10 03:44:29" (1/1) ... [2018-10-10 15:44:30,026 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 10.10 03:44:29" (1/1) ... [2018-10-10 15:44:30,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:44:30,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:44:30,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:44:30,033 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:44:30,034 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 10.10 03:44:29" (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 [2018-10-10 15:44:30,109 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:44:30,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:44:30,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:44:31,156 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:44:31,157 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 10.10 03:44:31 BoogieIcfgContainer [2018-10-10 15:44:31,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:44:31,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:44:31,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:44:31,162 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:44:31,163 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 10.10 03:44:29" (1/2) ... [2018-10-10 15:44:31,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@596a6aef and model type sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:44:31, skipping insertion in model container [2018-10-10 15:44:31,164 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 10.10 03:44:31" (2/2) ... [2018-10-10 15:44:31,166 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-buckets_true-unreach-call_true-valid-memsafety.i_44.bpl [2018-10-10 15:44:31,176 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:44:31,186 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:44:31,204 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:44:31,234 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:44:31,235 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:44:31,235 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:44:31,236 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:44:31,236 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:44:31,236 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:44:31,236 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:44:31,236 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:44:31,237 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:44:31,272 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2018-10-10 15:44:31,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-10 15:44:31,301 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:31,306 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] [2018-10-10 15:44:31,309 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:31,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:31,317 INFO L82 PathProgramCache]: Analyzing trace with hash 343449186, now seen corresponding path program 1 times [2018-10-10 15:44:31,388 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:32,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:32,329 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:44:32,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-10-10 15:44:32,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-10 15:44:32,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-10 15:44:32,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-10-10 15:44:32,356 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 10 states. [2018-10-10 15:44:33,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:33,367 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2018-10-10 15:44:33,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:44:33,369 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 160 [2018-10-10 15:44:33,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:33,401 INFO L225 Difference]: With dead ends: 216 [2018-10-10 15:44:33,401 INFO L226 Difference]: Without dead ends: 216 [2018-10-10 15:44:33,404 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2018-10-10 15:44:33,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2018-10-10 15:44:33,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 200. [2018-10-10 15:44:33,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2018-10-10 15:44:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 200 transitions. [2018-10-10 15:44:33,486 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 200 transitions. Word has length 160 [2018-10-10 15:44:33,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:33,488 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 200 transitions. [2018-10-10 15:44:33,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-10 15:44:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 200 transitions. [2018-10-10 15:44:33,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-10-10 15:44:33,493 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:33,493 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] [2018-10-10 15:44:33,494 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:33,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:33,494 INFO L82 PathProgramCache]: Analyzing trace with hash -4084199, now seen corresponding path program 1 times [2018-10-10 15:44:33,495 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:33,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:34,910 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2018-10-10 15:44:38,119 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:38,119 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:38,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2018-10-10 15:44:38,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-10-10 15:44:38,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-10-10 15:44:38,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2193, Unknown=0, NotChecked=0, Total=2352 [2018-10-10 15:44:38,124 INFO L87 Difference]: Start difference. First operand 200 states and 200 transitions. Second operand 49 states. [2018-10-10 15:44:40,292 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-10 15:44:40,742 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 67 [2018-10-10 15:44:41,066 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2018-10-10 15:44:41,414 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 71 [2018-10-10 15:44:41,643 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2018-10-10 15:44:42,073 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2018-10-10 15:44:42,313 WARN L178 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-10 15:44:42,707 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2018-10-10 15:44:42,932 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2018-10-10 15:44:44,677 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-10 15:44:44,856 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-10 15:44:45,212 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-10 15:44:45,483 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2018-10-10 15:44:45,767 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-10 15:44:45,954 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2018-10-10 15:44:49,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:44:49,902 INFO L93 Difference]: Finished difference Result 255 states and 255 transitions. [2018-10-10 15:44:49,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2018-10-10 15:44:49,903 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 199 [2018-10-10 15:44:49,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:44:49,906 INFO L225 Difference]: With dead ends: 255 [2018-10-10 15:44:49,906 INFO L226 Difference]: Without dead ends: 255 [2018-10-10 15:44:49,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2506 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1331, Invalid=9799, Unknown=0, NotChecked=0, Total=11130 [2018-10-10 15:44:49,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2018-10-10 15:44:49,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 239. [2018-10-10 15:44:49,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2018-10-10 15:44:49,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2018-10-10 15:44:49,928 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 199 [2018-10-10 15:44:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:44:49,929 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2018-10-10 15:44:49,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-10-10 15:44:49,929 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2018-10-10 15:44:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2018-10-10 15:44:49,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:44:49,934 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] [2018-10-10 15:44:49,934 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:44:49,935 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:44:49,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1809641090, now seen corresponding path program 2 times [2018-10-10 15:44:49,936 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:44:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:44:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:44:53,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:44:53,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-10 15:44:53,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-10 15:44:53,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-10 15:44:53,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=3006, Unknown=0, NotChecked=0, Total=3192 [2018-10-10 15:44:53,850 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 57 states. [2018-10-10 15:44:55,674 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2018-10-10 15:44:55,845 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-10 15:44:56,046 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-10 15:44:56,204 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-10 15:44:56,437 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-10 15:44:56,690 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-10-10 15:44:57,031 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-10 15:44:57,234 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2018-10-10 15:44:57,457 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2018-10-10 15:44:58,027 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2018-10-10 15:44:59,096 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-10 15:44:59,299 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-10 15:44:59,894 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2018-10-10 15:45:00,196 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2018-10-10 15:45:00,523 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2018-10-10 15:45:00,806 WARN L178 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2018-10-10 15:45:01,116 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 89 [2018-10-10 15:45:01,298 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2018-10-10 15:45:01,952 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2018-10-10 15:45:02,166 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2018-10-10 15:45:03,083 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2018-10-10 15:45:04,050 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2018-10-10 15:45:04,964 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2018-10-10 15:45:05,418 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2018-10-10 15:45:06,858 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2018-10-10 15:45:07,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:07,367 INFO L93 Difference]: Finished difference Result 294 states and 294 transitions. [2018-10-10 15:45:07,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2018-10-10 15:45:07,368 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 238 [2018-10-10 15:45:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:07,372 INFO L225 Difference]: With dead ends: 294 [2018-10-10 15:45:07,372 INFO L226 Difference]: Without dead ends: 294 [2018-10-10 15:45:07,377 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3997 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=1524, Invalid=14732, Unknown=0, NotChecked=0, Total=16256 [2018-10-10 15:45:07,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2018-10-10 15:45:07,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 278. [2018-10-10 15:45:07,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-10-10 15:45:07,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2018-10-10 15:45:07,395 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 238 [2018-10-10 15:45:07,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:07,399 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2018-10-10 15:45:07,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-10 15:45:07,399 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2018-10-10 15:45:07,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-10-10 15:45:07,407 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:45:07,407 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] [2018-10-10 15:45:07,408 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:45:07,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:45:07,408 INFO L82 PathProgramCache]: Analyzing trace with hash 518093305, now seen corresponding path program 3 times [2018-10-10 15:45:07,409 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:45:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:45:08,372 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2018-10-10 15:45:10,149 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 18 [2018-10-10 15:45:11,895 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-10-10 15:45:12,643 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:45:12,643 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:45:12,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2018-10-10 15:45:12,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2018-10-10 15:45:12,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2018-10-10 15:45:12,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=4209, Unknown=0, NotChecked=0, Total=4422 [2018-10-10 15:45:12,646 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand 67 states. [2018-10-10 15:45:14,887 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-10 15:45:15,115 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-10 15:45:15,287 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-10 15:45:15,533 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-10 15:45:15,741 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-10-10 15:45:16,129 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-10 15:45:16,344 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2018-10-10 15:45:17,119 WARN L178 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2018-10-10 15:45:18,864 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2018-10-10 15:45:19,092 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-10 15:45:19,444 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-10-10 15:45:19,733 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2018-10-10 15:45:20,018 WARN L178 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2018-10-10 15:45:20,395 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2018-10-10 15:45:20,688 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2018-10-10 15:45:21,019 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 83 [2018-10-10 15:45:21,221 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2018-10-10 15:45:21,771 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-10 15:45:22,018 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2018-10-10 15:45:22,354 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2018-10-10 15:45:23,577 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 62 [2018-10-10 15:45:23,790 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2018-10-10 15:45:24,498 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2018-10-10 15:45:24,779 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2018-10-10 15:45:25,256 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2018-10-10 15:45:25,446 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-10 15:45:25,660 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-10 15:45:26,051 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2018-10-10 15:45:26,323 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2018-10-10 15:45:30,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:30,402 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2018-10-10 15:45:30,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2018-10-10 15:45:30,403 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 277 [2018-10-10 15:45:30,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:30,406 INFO L225 Difference]: With dead ends: 333 [2018-10-10 15:45:30,406 INFO L226 Difference]: Without dead ends: 333 [2018-10-10 15:45:30,413 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5750 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=1774, Invalid=21788, Unknown=0, NotChecked=0, Total=23562 [2018-10-10 15:45:30,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-10 15:45:30,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 317. [2018-10-10 15:45:30,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2018-10-10 15:45:30,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2018-10-10 15:45:30,427 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 277 [2018-10-10 15:45:30,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:30,428 INFO L481 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2018-10-10 15:45:30,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2018-10-10 15:45:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2018-10-10 15:45:30,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-10-10 15:45:30,432 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:45:30,433 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] [2018-10-10 15:45:30,433 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:45:30,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:45:30,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1877899614, now seen corresponding path program 4 times [2018-10-10 15:45:30,434 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:45:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:45:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 150 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:45:34,676 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:45:34,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-10 15:45:34,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-10 15:45:34,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-10 15:45:34,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3988, Unknown=0, NotChecked=0, Total=4160 [2018-10-10 15:45:34,678 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand 65 states. [2018-10-10 15:45:36,849 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-10 15:45:37,061 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2018-10-10 15:45:37,224 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2018-10-10 15:45:37,503 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-10 15:45:37,765 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-10-10 15:45:38,153 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-10 15:45:38,349 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-10 15:45:39,817 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-10 15:45:40,357 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-10-10 15:45:40,612 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2018-10-10 15:45:41,038 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2018-10-10 15:45:41,356 WARN L178 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 83 [2018-10-10 15:45:41,556 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2018-10-10 15:45:42,083 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-10 15:45:42,293 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2018-10-10 15:45:42,820 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2018-10-10 15:45:44,364 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2018-10-10 15:45:45,501 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2018-10-10 15:45:45,725 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2018-10-10 15:45:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:45:49,937 INFO L93 Difference]: Finished difference Result 284 states and 283 transitions. [2018-10-10 15:45:49,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2018-10-10 15:45:49,938 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 316 [2018-10-10 15:45:49,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:45:49,939 INFO L225 Difference]: With dead ends: 284 [2018-10-10 15:45:49,939 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:45:49,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 6 SyntacticMatches, 4 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5380 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1398, Invalid=20358, Unknown=0, NotChecked=0, Total=21756 [2018-10-10 15:45:49,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:45:49,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:45:49,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:45:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:45:49,942 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 316 [2018-10-10 15:45:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:45:49,942 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:45:49,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-10 15:45:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:45:49,943 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:45:49,947 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 10.10 03:45:49 BoogieIcfgContainer [2018-10-10 15:45:49,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:45:49,948 INFO L168 Benchmark]: Toolchain (without parser) took 80005.03 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 608.2 MB). Free memory was 1.5 GB in the beginning and 1.9 GB in the end (delta: -458.0 MB). Peak memory consumption was 150.2 MB. Max. memory is 7.1 GB. [2018-10-10 15:45:49,949 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:45:49,950 INFO L168 Benchmark]: Boogie Preprocessor took 87.43 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. [2018-10-10 15:45:49,950 INFO L168 Benchmark]: RCFGBuilder took 1124.62 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. [2018-10-10 15:45:49,951 INFO L168 Benchmark]: TraceAbstraction took 78788.46 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 608.2 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -510.8 MB). Peak memory consumption was 97.4 MB. Max. memory is 7.1 GB. [2018-10-10 15:45:49,954 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.43 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 1124.62 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 78788.46 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 608.2 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -510.8 MB). Peak memory consumption was 97.4 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, 78.7s OverallTime, 5 OverallIterations, 5 TraceHistogramMax, 59.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 546 SDtfs, 7235 SDslu, 11763 SDs, 0 SdLazy, 23212 SolverSat, 623 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 587 GetRequests, 30 SyntacticMatches, 13 SemanticMatches, 544 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17660 ImplicationChecksByTransitivity, 51.5s 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 64 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 17.3s 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-0-2018-10-10_15-45-49-964.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-0-2018-10-10_15-45-49-964.csv Received shutdown request...