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/alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:34:39,311 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:34:39,314 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:34:39,326 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:34:39,326 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:34:39,328 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:34:39,329 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:34:39,331 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:34:39,332 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:34:39,333 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:34:39,334 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-14 16:34:39,334 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-14 16:34:39,335 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-14 16:34:39,336 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-14 16:34:39,337 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-14 16:34:39,338 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-14 16:34:39,339 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-14 16:34:39,341 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-14 16:34:39,343 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-14 16:34:39,344 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-14 16:34:39,346 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-14 16:34:39,347 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-14 16:34:39,349 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-14 16:34:39,357 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 16:34:39,368 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:34:39,368 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:34:39,369 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:34:39,369 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:34:39,369 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:34:39,369 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:34:39,370 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:34:39,370 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:34:39,371 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:34:39,371 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:34:39,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:34:39,371 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:34:39,371 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:34:39,372 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:34:39,373 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:34:39,416 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:34:39,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:34:39,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:34:39,435 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:34:39,436 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:34:39,437 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl [2018-10-14 16:34:39,437 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl' [2018-10-14 16:34:39,511 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:34:39,513 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:34:39,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:34:39,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:34:39,514 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:34:39,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:39" (1/1) ... [2018-10-14 16:34:39,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:39" (1/1) ... [2018-10-14 16:34:39,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:39" (1/1) ... [2018-10-14 16:34:39,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:39" (1/1) ... [2018-10-14 16:34:39,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:39" (1/1) ... [2018-10-14 16:34:39,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:39" (1/1) ... [2018-10-14 16:34:39,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:39" (1/1) ... [2018-10-14 16:34:39,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:34:39,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:34:39,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:34:39,585 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:34:39,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:39" (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 16:34:39,665 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:34:39,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:34:39,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:34:40,701 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:34:40,702 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:34:40 BoogieIcfgContainer [2018-10-14 16:34:40,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:34:40,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:34:40,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:34:40,707 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:34:40,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:39" (1/2) ... [2018-10-14 16:34:40,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@768a394b and model type alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:34:40, skipping insertion in model container [2018-10-14 16:34:40,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:34:40" (2/2) ... [2018-10-14 16:34:40,711 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl [2018-10-14 16:34:40,722 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:34:40,731 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:34:40,749 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:34:40,779 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:34:40,780 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:34:40,781 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:34:40,781 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:34:40,781 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:34:40,781 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:34:40,781 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:34:40,781 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:34:40,782 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:34:40,805 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2018-10-14 16:34:40,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-14 16:34:40,817 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:40,818 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] [2018-10-14 16:34:40,819 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:40,826 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:40,827 INFO L82 PathProgramCache]: Analyzing trace with hash -2079339700, now seen corresponding path program 1 times [2018-10-14 16:34:40,896 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:41,274 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 16:34:41,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:41,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-14 16:34:41,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-14 16:34:41,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-14 16:34:41,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-14 16:34:41,301 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 7 states. [2018-10-14 16:34:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:42,780 INFO L93 Difference]: Finished difference Result 305 states and 312 transitions. [2018-10-14 16:34:42,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-14 16:34:42,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2018-10-14 16:34:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:42,802 INFO L225 Difference]: With dead ends: 305 [2018-10-14 16:34:42,802 INFO L226 Difference]: Without dead ends: 305 [2018-10-14 16:34:42,804 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:34:42,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-10-14 16:34:42,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 195. [2018-10-14 16:34:42,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-14 16:34:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 200 transitions. [2018-10-14 16:34:42,901 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 200 transitions. Word has length 47 [2018-10-14 16:34:42,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:42,904 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 200 transitions. [2018-10-14 16:34:42,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-14 16:34:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 200 transitions. [2018-10-14 16:34:42,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-14 16:34:42,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:42,912 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-14 16:34:42,913 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:42,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:42,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1079299287, now seen corresponding path program 1 times [2018-10-14 16:34:42,915 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:43,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:43,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:43,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-14 16:34:43,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:34:43,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:34:43,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:34:43,211 INFO L87 Difference]: Start difference. First operand 195 states and 200 transitions. Second operand 11 states. [2018-10-14 16:34:44,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:44,115 INFO L93 Difference]: Finished difference Result 374 states and 381 transitions. [2018-10-14 16:34:44,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-14 16:34:44,116 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2018-10-14 16:34:44,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:44,119 INFO L225 Difference]: With dead ends: 374 [2018-10-14 16:34:44,120 INFO L226 Difference]: Without dead ends: 363 [2018-10-14 16:34:44,121 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-10-14 16:34:44,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-14 16:34:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 217. [2018-10-14 16:34:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-14 16:34:44,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 223 transitions. [2018-10-14 16:34:44,139 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 223 transitions. Word has length 74 [2018-10-14 16:34:44,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:44,139 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 223 transitions. [2018-10-14 16:34:44,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:34:44,140 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 223 transitions. [2018-10-14 16:34:44,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-14 16:34:44,144 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:44,144 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-14 16:34:44,144 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:44,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:44,145 INFO L82 PathProgramCache]: Analyzing trace with hash 598112888, now seen corresponding path program 1 times [2018-10-14 16:34:44,146 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:44,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:44,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:44,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-14 16:34:44,345 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-14 16:34:44,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-14 16:34:44,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:34:44,346 INFO L87 Difference]: Start difference. First operand 217 states and 223 transitions. Second operand 8 states. [2018-10-14 16:34:45,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:45,403 INFO L93 Difference]: Finished difference Result 504 states and 514 transitions. [2018-10-14 16:34:45,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-14 16:34:45,404 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2018-10-14 16:34:45,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:45,409 INFO L225 Difference]: With dead ends: 504 [2018-10-14 16:34:45,409 INFO L226 Difference]: Without dead ends: 500 [2018-10-14 16:34:45,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:34:45,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2018-10-14 16:34:45,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 269. [2018-10-14 16:34:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-14 16:34:45,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 277 transitions. [2018-10-14 16:34:45,428 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 277 transitions. Word has length 90 [2018-10-14 16:34:45,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:45,429 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 277 transitions. [2018-10-14 16:34:45,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-14 16:34:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 277 transitions. [2018-10-14 16:34:45,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-14 16:34:45,433 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:45,434 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-14 16:34:45,434 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:45,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:45,435 INFO L82 PathProgramCache]: Analyzing trace with hash -2041174887, now seen corresponding path program 1 times [2018-10-14 16:34:45,436 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-14 16:34:45,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:45,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-14 16:34:45,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-14 16:34:45,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-14 16:34:45,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-14 16:34:45,647 INFO L87 Difference]: Start difference. First operand 269 states and 277 transitions. Second operand 9 states. [2018-10-14 16:34:46,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:46,497 INFO L93 Difference]: Finished difference Result 423 states and 432 transitions. [2018-10-14 16:34:46,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-14 16:34:46,498 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2018-10-14 16:34:46,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:46,502 INFO L225 Difference]: With dead ends: 423 [2018-10-14 16:34:46,502 INFO L226 Difference]: Without dead ends: 391 [2018-10-14 16:34:46,503 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-10-14 16:34:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-10-14 16:34:46,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 269. [2018-10-14 16:34:46,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-14 16:34:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 276 transitions. [2018-10-14 16:34:46,515 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 276 transitions. Word has length 106 [2018-10-14 16:34:46,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:46,515 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 276 transitions. [2018-10-14 16:34:46,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-14 16:34:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 276 transitions. [2018-10-14 16:34:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-14 16:34:46,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:46,521 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-14 16:34:46,522 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:46,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:46,522 INFO L82 PathProgramCache]: Analyzing trace with hash -17135668, now seen corresponding path program 2 times [2018-10-14 16:34:46,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:46,651 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:46,651 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:34:46,652 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:34:46,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:34:46,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:34:46,653 INFO L87 Difference]: Start difference. First operand 269 states and 276 transitions. Second operand 3 states. [2018-10-14 16:34:46,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:46,720 INFO L93 Difference]: Finished difference Result 363 states and 369 transitions. [2018-10-14 16:34:46,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:34:46,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2018-10-14 16:34:46,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:46,723 INFO L225 Difference]: With dead ends: 363 [2018-10-14 16:34:46,723 INFO L226 Difference]: Without dead ends: 359 [2018-10-14 16:34:46,724 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:34:46,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-14 16:34:46,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 335. [2018-10-14 16:34:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-14 16:34:46,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 342 transitions. [2018-10-14 16:34:46,733 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 342 transitions. Word has length 133 [2018-10-14 16:34:46,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:46,734 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 342 transitions. [2018-10-14 16:34:46,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:34:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 342 transitions. [2018-10-14 16:34:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-14 16:34:46,736 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:46,737 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-14 16:34:46,737 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:46,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:46,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1496584980, now seen corresponding path program 1 times [2018-10-14 16:34:46,738 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-14 16:34:47,060 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:47,060 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-14 16:34:47,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-14 16:34:47,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-14 16:34:47,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:34:47,063 INFO L87 Difference]: Start difference. First operand 335 states and 342 transitions. Second operand 8 states. [2018-10-14 16:34:47,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:47,695 INFO L93 Difference]: Finished difference Result 363 states and 369 transitions. [2018-10-14 16:34:47,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-14 16:34:47,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2018-10-14 16:34:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:47,697 INFO L225 Difference]: With dead ends: 363 [2018-10-14 16:34:47,697 INFO L226 Difference]: Without dead ends: 359 [2018-10-14 16:34:47,698 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-10-14 16:34:47,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-14 16:34:47,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 193. [2018-10-14 16:34:47,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-14 16:34:47,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions. [2018-10-14 16:34:47,705 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 133 [2018-10-14 16:34:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:47,706 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions. [2018-10-14 16:34:47,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-14 16:34:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions. [2018-10-14 16:34:47,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-14 16:34:47,710 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:47,711 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-14 16:34:47,711 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:47,711 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:47,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1370294765, now seen corresponding path program 1 times [2018-10-14 16:34:47,713 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:49,000 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:49,001 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-14 16:34:49,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-14 16:34:49,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-14 16:34:49,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=863, Unknown=0, NotChecked=0, Total=930 [2018-10-14 16:34:49,002 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand 31 states. [2018-10-14 16:34:55,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:55,200 INFO L93 Difference]: Finished difference Result 491 states and 498 transitions. [2018-10-14 16:34:55,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-14 16:34:55,201 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 149 [2018-10-14 16:34:55,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:55,205 INFO L225 Difference]: With dead ends: 491 [2018-10-14 16:34:55,205 INFO L226 Difference]: Without dead ends: 491 [2018-10-14 16:34:55,208 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=739, Invalid=5423, Unknown=0, NotChecked=0, Total=6162 [2018-10-14 16:34:55,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-10-14 16:34:55,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 358. [2018-10-14 16:34:55,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-10-14 16:34:55,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 364 transitions. [2018-10-14 16:34:55,216 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 364 transitions. Word has length 149 [2018-10-14 16:34:55,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:55,217 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 364 transitions. [2018-10-14 16:34:55,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-14 16:34:55,217 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 364 transitions. [2018-10-14 16:34:55,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-14 16:34:55,219 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:55,220 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-14 16:34:55,220 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:55,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:55,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1798100968, now seen corresponding path program 2 times [2018-10-14 16:34:55,221 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:56,442 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:56,443 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:56,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-14 16:34:56,443 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-14 16:34:56,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-14 16:34:56,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2018-10-14 16:34:56,445 INFO L87 Difference]: Start difference. First operand 358 states and 364 transitions. Second operand 31 states. [2018-10-14 16:34:59,780 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-10-14 16:35:01,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:35:01,163 INFO L93 Difference]: Finished difference Result 458 states and 464 transitions. [2018-10-14 16:35:01,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-14 16:35:01,164 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 176 [2018-10-14 16:35:01,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:35:01,166 INFO L225 Difference]: With dead ends: 458 [2018-10-14 16:35:01,166 INFO L226 Difference]: Without dead ends: 355 [2018-10-14 16:35:01,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=802, Invalid=3890, Unknown=0, NotChecked=0, Total=4692 [2018-10-14 16:35:01,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-10-14 16:35:01,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 277. [2018-10-14 16:35:01,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-10-14 16:35:01,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-10-14 16:35:01,175 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 176 [2018-10-14 16:35:01,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:35:01,175 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-10-14 16:35:01,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-14 16:35:01,175 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-10-14 16:35:01,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-14 16:35:01,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:35:01,178 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-14 16:35:01,178 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:35:01,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:35:01,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1112506631, now seen corresponding path program 1 times [2018-10-14 16:35:01,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:35:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:35:02,039 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-14 16:35:03,959 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-14 16:35:03,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:35:03,960 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-14 16:35:03,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-14 16:35:03,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-14 16:35:03,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1790, Unknown=0, NotChecked=0, Total=1892 [2018-10-14 16:35:03,962 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 44 states. [2018-10-14 16:35:04,988 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2018-10-14 16:35:06,732 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-14 16:35:07,057 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-14 16:35:07,283 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-14 16:35:08,899 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2018-10-14 16:35:09,162 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2018-10-14 16:35:09,543 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2018-10-14 16:35:09,830 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2018-10-14 16:35:11,001 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2018-10-14 16:35:11,313 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2018-10-14 16:35:11,591 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-10-14 16:35:11,796 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2018-10-14 16:35:11,968 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-14 16:35:12,352 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2018-10-14 16:35:12,637 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2018-10-14 16:35:12,919 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2018-10-14 16:35:13,151 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 83 [2018-10-14 16:35:13,424 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 94 [2018-10-14 16:35:15,666 WARN L179 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-10-14 16:35:17,048 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-10-14 16:35:20,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:35:20,697 INFO L93 Difference]: Finished difference Result 499 states and 506 transitions. [2018-10-14 16:35:20,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-14 16:35:20,697 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 192 [2018-10-14 16:35:20,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:35:20,700 INFO L225 Difference]: With dead ends: 499 [2018-10-14 16:35:20,700 INFO L226 Difference]: Without dead ends: 447 [2018-10-14 16:35:20,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3990 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1414, Invalid=15616, Unknown=0, NotChecked=0, Total=17030 [2018-10-14 16:35:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-10-14 16:35:20,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 363. [2018-10-14 16:35:20,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-14 16:35:20,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 368 transitions. [2018-10-14 16:35:20,712 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 368 transitions. Word has length 192 [2018-10-14 16:35:20,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:35:20,713 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 368 transitions. [2018-10-14 16:35:20,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-14 16:35:20,713 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 368 transitions. [2018-10-14 16:35:20,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-14 16:35:20,716 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:35:20,716 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-14 16:35:20,717 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:35:20,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:35:20,717 INFO L82 PathProgramCache]: Analyzing trace with hash -70913139, now seen corresponding path program 2 times [2018-10-14 16:35:20,718 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:35:20,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:35:25,151 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-14 16:35:25,151 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:35:25,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-14 16:35:25,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-14 16:35:25,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-14 16:35:25,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=3851, Unknown=0, NotChecked=0, Total=4032 [2018-10-14 16:35:25,155 INFO L87 Difference]: Start difference. First operand 363 states and 368 transitions. Second operand 64 states. [2018-10-14 16:35:27,896 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 25 [2018-10-14 16:35:28,775 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 35 [2018-10-14 16:35:29,252 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 47 [2018-10-14 16:35:29,910 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 56 [2018-10-14 16:35:30,404 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 60 [2018-10-14 16:35:30,623 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:35:31,242 WARN L179 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-14 16:35:31,458 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2018-10-14 16:35:31,873 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 70 [2018-10-14 16:35:32,115 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2018-10-14 16:35:32,404 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 42 [2018-10-14 16:35:32,782 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 38 [2018-10-14 16:35:33,382 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 46 [2018-10-14 16:35:33,878 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 48 [2018-10-14 16:35:34,693 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 53 [2018-10-14 16:35:35,311 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2018-10-14 16:35:35,629 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 57 [2018-10-14 16:35:36,047 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 52 [2018-10-14 16:35:36,529 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2018-10-14 16:35:37,114 WARN L179 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 120 [2018-10-14 16:35:37,758 WARN L179 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2018-10-14 16:35:38,407 WARN L179 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 126 [2018-10-14 16:35:38,832 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-14 16:35:39,287 WARN L179 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 129 [2018-10-14 16:35:39,522 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2018-10-14 16:35:40,011 WARN L179 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2018-10-14 16:35:40,326 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2018-10-14 16:35:40,711 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 120 [2018-10-14 16:35:41,047 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2018-10-14 16:35:41,469 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 127 [2018-10-14 16:35:42,027 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2018-10-14 16:35:42,521 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2018-10-14 16:35:43,031 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 93 [2018-10-14 16:35:43,756 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 86 [2018-10-14 16:35:44,266 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 94 [2018-10-14 16:35:44,820 WARN L179 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 102 [2018-10-14 16:35:45,057 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2018-10-14 16:35:45,402 WARN L179 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2018-10-14 16:35:45,724 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2018-10-14 16:35:46,266 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 118 [2018-10-14 16:35:46,645 WARN L179 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2018-10-14 16:35:46,924 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-14 16:35:47,404 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 123 [2018-10-14 16:35:47,796 WARN L179 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2018-10-14 16:35:48,088 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-14 16:35:48,661 WARN L179 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 128 [2018-10-14 16:35:49,090 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2018-10-14 16:35:50,370 WARN L179 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 123 [2018-10-14 16:35:50,853 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2018-10-14 16:35:51,388 WARN L179 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 122 [2018-10-14 16:35:51,957 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-10-14 16:35:52,234 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-14 16:35:52,549 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2018-10-14 16:35:52,975 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2018-10-14 16:35:53,327 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-14 16:35:53,920 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-14 16:35:55,306 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2018-10-14 16:35:56,334 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2018-10-14 16:35:56,821 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 111 [2018-10-14 16:35:57,171 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 104 [2018-10-14 16:35:57,835 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2018-10-14 16:35:58,474 WARN L179 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 121 [2018-10-14 16:35:59,175 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 125 [2018-10-14 16:35:59,732 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 116 [2018-10-14 16:36:00,072 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2018-10-14 16:36:00,532 WARN L179 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 129 [2018-10-14 16:36:01,030 WARN L179 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 136 [2018-10-14 16:36:01,323 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2018-10-14 16:36:01,553 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2018-10-14 16:36:01,774 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2018-10-14 16:36:02,042 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2018-10-14 16:36:02,512 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2018-10-14 16:36:02,808 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2018-10-14 16:36:03,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:36:03,616 INFO L93 Difference]: Finished difference Result 583 states and 591 transitions. [2018-10-14 16:36:03,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-14 16:36:03,616 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 235 [2018-10-14 16:36:03,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:36:03,619 INFO L225 Difference]: With dead ends: 583 [2018-10-14 16:36:03,620 INFO L226 Difference]: Without dead ends: 531 [2018-10-14 16:36:03,628 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12219 ImplicationChecksByTransitivity, 33.4s TimeCoverageRelationStatistics Valid=3100, Invalid=38720, Unknown=0, NotChecked=0, Total=41820 [2018-10-14 16:36:03,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-14 16:36:03,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 406. [2018-10-14 16:36:03,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2018-10-14 16:36:03,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 412 transitions. [2018-10-14 16:36:03,635 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 412 transitions. Word has length 235 [2018-10-14 16:36:03,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:36:03,636 INFO L481 AbstractCegarLoop]: Abstraction has 406 states and 412 transitions. [2018-10-14 16:36:03,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-14 16:36:03,636 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 412 transitions. [2018-10-14 16:36:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-14 16:36:03,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:36:03,639 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-14 16:36:03,639 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:36:03,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:36:03,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1362807853, now seen corresponding path program 3 times [2018-10-14 16:36:03,641 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:36:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:36:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-14 16:36:03,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:36:03,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:36:03,733 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:36:03,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:36:03,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:36:03,734 INFO L87 Difference]: Start difference. First operand 406 states and 412 transitions. Second operand 3 states. [2018-10-14 16:36:03,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:36:03,841 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2018-10-14 16:36:03,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:36:03,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-10-14 16:36:03,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:36:03,843 INFO L225 Difference]: With dead ends: 333 [2018-10-14 16:36:03,843 INFO L226 Difference]: Without dead ends: 333 [2018-10-14 16:36:03,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:36:03,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-14 16:36:03,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 322. [2018-10-14 16:36:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-10-14 16:36:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 324 transitions. [2018-10-14 16:36:03,849 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 324 transitions. Word has length 235 [2018-10-14 16:36:03,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:36:03,849 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 324 transitions. [2018-10-14 16:36:03,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:36:03,849 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 324 transitions. [2018-10-14 16:36:03,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-14 16:36:03,852 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:36:03,853 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2018-10-14 16:36:03,853 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:36:03,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:36:03,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1270754983, now seen corresponding path program 4 times [2018-10-14 16:36:03,854 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:36:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:36:04,648 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-14 16:36:04,858 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-14 16:36:05,050 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-10-14 16:36:06,578 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2018-10-14 16:36:07,663 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2018-10-14 16:36:08,078 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2018-10-14 16:36:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:36:12,267 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:36:12,267 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-10-14 16:36:12,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-14 16:36:12,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-14 16:36:12,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=5645, Unknown=0, NotChecked=0, Total=6006 [2018-10-14 16:36:12,271 INFO L87 Difference]: Start difference. First operand 322 states and 324 transitions. Second operand 78 states. [2018-10-14 16:36:13,276 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2018-10-14 16:36:13,540 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2018-10-14 16:36:13,744 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2018-10-14 16:36:13,924 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-14 16:36:14,239 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2018-10-14 16:36:14,505 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2018-10-14 16:36:14,727 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-14 16:36:15,070 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-14 16:36:15,342 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2018-10-14 16:36:15,676 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2018-10-14 16:36:16,030 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2018-10-14 16:36:16,299 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-14 16:36:16,565 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2018-10-14 16:36:16,964 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2018-10-14 16:36:17,195 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-14 16:36:17,603 WARN L179 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2018-10-14 16:36:17,932 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-14 16:36:19,408 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2018-10-14 16:36:19,702 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-10-14 16:36:19,965 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-14 16:36:20,300 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2018-10-14 16:36:20,662 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2018-10-14 16:36:20,984 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-14 16:36:21,289 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-14 16:36:21,638 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2018-10-14 16:36:22,173 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2018-10-14 16:36:22,560 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2018-10-14 16:36:22,811 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-14 16:36:22,992 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-14 16:36:23,704 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2018-10-14 16:36:23,993 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2018-10-14 16:36:24,431 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2018-10-14 16:36:24,760 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2018-10-14 16:36:25,072 WARN L179 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2018-10-14 16:36:25,471 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2018-10-14 16:36:25,960 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2018-10-14 16:36:26,330 WARN L179 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 80 [2018-10-14 16:36:26,867 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2018-10-14 16:36:27,276 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2018-10-14 16:36:27,646 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 92 [2018-10-14 16:36:28,193 WARN L179 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 98 [2018-10-14 16:36:28,383 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2018-10-14 16:36:28,641 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-10-14 16:36:28,843 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2018-10-14 16:36:29,073 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2018-10-14 16:36:29,333 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2018-10-14 16:36:29,701 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2018-10-14 16:36:29,945 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2018-10-14 16:36:30,350 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2018-10-14 16:36:30,672 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2018-10-14 16:36:31,151 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2018-10-14 16:36:31,743 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2018-10-14 16:36:31,992 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2018-10-14 16:36:32,443 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2018-10-14 16:36:32,751 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2018-10-14 16:36:34,375 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2018-10-14 16:36:35,076 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2018-10-14 16:36:35,364 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-14 16:36:35,677 WARN L179 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2018-10-14 16:36:36,018 WARN L179 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2018-10-14 16:36:36,655 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2018-10-14 16:36:37,117 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2018-10-14 16:36:37,672 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2018-10-14 16:36:38,054 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-10-14 16:36:38,494 WARN L179 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 108 [2018-10-14 16:36:38,766 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2018-10-14 16:36:39,063 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2018-10-14 16:36:39,358 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-14 16:36:40,014 WARN L179 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2018-10-14 16:36:40,328 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2018-10-14 16:36:40,570 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-10-14 16:36:40,752 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-10-14 16:36:40,977 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-14 16:36:41,215 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2018-10-14 16:36:41,679 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-14 16:36:42,320 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2018-10-14 16:36:42,568 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2018-10-14 16:36:43,071 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-14 16:36:43,295 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-14 16:36:43,728 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2018-10-14 16:36:44,048 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2018-10-14 16:36:44,329 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2018-10-14 16:36:44,552 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2018-10-14 16:36:44,970 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-10-14 16:36:45,287 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2018-10-14 16:36:45,477 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-14 16:36:45,704 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-14 16:36:45,930 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:36:46,200 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-14 16:36:46,761 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-14 16:36:46,973 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2018-10-14 16:36:47,255 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2018-10-14 16:36:47,528 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-14 16:36:47,741 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2018-10-14 16:36:48,134 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-14 16:36:48,381 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2018-10-14 16:36:49,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:36:49,061 INFO L93 Difference]: Finished difference Result 560 states and 563 transitions. [2018-10-14 16:36:49,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-14 16:36:49,061 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 278 [2018-10-14 16:36:49,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:36:49,064 INFO L225 Difference]: With dead ends: 560 [2018-10-14 16:36:49,064 INFO L226 Difference]: Without dead ends: 560 [2018-10-14 16:36:49,068 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 2 SyntacticMatches, 7 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11491 ImplicationChecksByTransitivity, 34.6s TimeCoverageRelationStatistics Valid=4134, Invalid=37278, Unknown=0, NotChecked=0, Total=41412 [2018-10-14 16:36:49,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2018-10-14 16:36:49,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 446. [2018-10-14 16:36:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-10-14 16:36:49,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 449 transitions. [2018-10-14 16:36:49,075 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 449 transitions. Word has length 278 [2018-10-14 16:36:49,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:36:49,076 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 449 transitions. [2018-10-14 16:36:49,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-14 16:36:49,076 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 449 transitions. [2018-10-14 16:36:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-14 16:36:49,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:36:49,080 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-14 16:36:49,081 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:36:49,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:36:49,081 INFO L82 PathProgramCache]: Analyzing trace with hash 553831676, now seen corresponding path program 5 times [2018-10-14 16:36:49,082 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:36:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:36:49,828 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-14 16:36:50,462 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 22 proven. 104 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-10-14 16:36:50,463 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:36:50,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-14 16:36:50,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-14 16:36:50,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-14 16:36:50,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2018-10-14 16:36:50,464 INFO L87 Difference]: Start difference. First operand 446 states and 449 transitions. Second operand 24 states. [2018-10-14 16:36:52,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:36:52,858 INFO L93 Difference]: Finished difference Result 455 states and 457 transitions. [2018-10-14 16:36:52,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-14 16:36:52,858 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 305 [2018-10-14 16:36:52,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:36:52,861 INFO L225 Difference]: With dead ends: 455 [2018-10-14 16:36:52,861 INFO L226 Difference]: Without dead ends: 365 [2018-10-14 16:36:52,862 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=592, Invalid=2378, Unknown=0, NotChecked=0, Total=2970 [2018-10-14 16:36:52,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-10-14 16:36:52,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-10-14 16:36:52,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-10-14 16:36:52,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2018-10-14 16:36:52,867 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 305 [2018-10-14 16:36:52,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:36:52,867 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2018-10-14 16:36:52,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-14 16:36:52,868 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2018-10-14 16:36:52,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-14 16:36:52,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:36:52,869 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-14 16:36:52,869 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:36:52,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:36:52,870 INFO L82 PathProgramCache]: Analyzing trace with hash -956504787, now seen corresponding path program 6 times [2018-10-14 16:36:52,870 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:36:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:36:58,522 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-14 16:36:58,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:36:58,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-10-14 16:36:58,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-14 16:36:58,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-14 16:36:58,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=5892, Unknown=0, NotChecked=0, Total=6162 [2018-10-14 16:36:58,525 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand 79 states. [2018-10-14 16:37:00,315 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 18 [2018-10-14 16:37:01,509 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 47 [2018-10-14 16:37:02,001 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 56 [2018-10-14 16:37:02,322 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 60 [2018-10-14 16:37:02,812 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 66 [2018-10-14 16:37:03,179 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 71 [2018-10-14 16:37:03,606 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 95 [2018-10-14 16:37:03,988 WARN L179 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 90 [2018-10-14 16:37:04,415 WARN L179 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 97 [2018-10-14 16:37:04,874 WARN L179 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 99 [2018-10-14 16:37:05,266 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2018-10-14 16:37:05,611 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-14 16:37:05,812 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2018-10-14 16:37:06,353 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2018-10-14 16:37:06,540 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2018-10-14 16:37:06,860 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2018-10-14 16:37:07,131 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2018-10-14 16:37:07,456 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-14 16:37:07,789 WARN L179 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2018-10-14 16:37:08,140 WARN L179 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2018-10-14 16:37:08,421 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-14 16:37:08,683 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-14 16:37:08,968 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-14 16:37:09,425 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-10-14 16:37:09,763 WARN L179 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2018-10-14 16:37:10,013 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2018-10-14 16:37:10,194 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-14 16:37:10,457 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-14 16:37:10,781 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-14 16:37:11,370 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 104 [2018-10-14 16:37:11,810 WARN L179 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 106 [2018-10-14 16:37:12,157 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2018-10-14 16:37:12,685 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-14 16:37:12,868 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2018-10-14 16:37:13,183 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2018-10-14 16:37:13,479 WARN L179 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2018-10-14 16:37:13,893 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2018-10-14 16:37:14,211 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-10-14 16:37:14,632 WARN L179 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 102 [2018-10-14 16:37:17,117 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 104 [2018-10-14 16:37:17,468 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2018-10-14 16:37:18,564 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 48 [2018-10-14 16:37:18,799 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 45 [2018-10-14 16:37:19,207 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 46 [2018-10-14 16:37:19,475 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 45 [2018-10-14 16:37:19,786 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 42 [2018-10-14 16:37:20,036 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 46 [2018-10-14 16:37:20,294 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 48 [2018-10-14 16:37:20,818 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 103 [2018-10-14 16:37:21,251 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 101 [2018-10-14 16:37:21,711 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 100 [2018-10-14 16:37:22,180 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 102 [2018-10-14 16:37:22,633 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2018-10-14 16:37:22,906 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2018-10-14 16:37:23,394 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2018-10-14 16:37:23,841 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2018-10-14 16:37:24,201 WARN L179 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2018-10-14 16:37:24,490 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2018-10-14 16:37:24,709 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2018-10-14 16:37:25,026 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2018-10-14 16:37:25,309 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2018-10-14 16:37:25,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:37:25,706 INFO L93 Difference]: Finished difference Result 374 states and 375 transitions. [2018-10-14 16:37:25,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-14 16:37:25,707 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 321 [2018-10-14 16:37:25,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:37:25,707 INFO L225 Difference]: With dead ends: 374 [2018-10-14 16:37:25,708 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:37:25,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7574 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=3204, Invalid=27948, Unknown=0, NotChecked=0, Total=31152 [2018-10-14 16:37:25,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:37:25,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:37:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:37:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:37:25,710 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 321 [2018-10-14 16:37:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:37:25,711 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:37:25,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-14 16:37:25,711 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:37:25,711 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:37:25,716 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:37:25 BoogieIcfgContainer [2018-10-14 16:37:25,716 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:37:25,717 INFO L168 Benchmark]: Toolchain (without parser) took 166205.52 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 235.9 MB). Free memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: -125.1 MB). Peak memory consumption was 110.8 MB. Max. memory is 7.1 GB. [2018-10-14 16:37:25,718 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:37:25,718 INFO L168 Benchmark]: Boogie Preprocessor took 69.91 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 16:37:25,718 INFO L168 Benchmark]: RCFGBuilder took 1118.23 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-14 16:37:25,719 INFO L168 Benchmark]: TraceAbstraction took 165012.83 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 235.9 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -167.4 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. [2018-10-14 16:37:25,720 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.91 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 1118.23 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 165012.83 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 235.9 MB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -167.4 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 260]: 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, 148 locations, 1 error locations. SAFE Result, 164.9s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 137.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1852 SDtfs, 20386 SDslu, 26548 SDs, 0 SdLazy, 36388 SolverSat, 1804 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1030 GetRequests, 38 SyntacticMatches, 20 SemanticMatches, 972 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37987 ImplicationChecksByTransitivity, 118.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=446occurred in iteration=12, 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, 14 MinimizatonAttempts, 1344 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 24.6s InterpolantComputationTime, 2474 NumberOfCodeBlocks, 2474 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2460 ConstructedInterpolants, 0 QuantifiedInterpolants, 7354129 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 419/1368 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/alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-37-25-729.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-37-25-729.csv Received shutdown request...