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 0.1.23-502d2f4 [2018-10-12 20:54:30,408 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-12 20:54:30,410 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-12 20:54:30,427 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-12 20:54:30,428 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-12 20:54:30,429 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-12 20:54:30,431 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-12 20:54:30,433 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-12 20:54:30,435 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-12 20:54:30,436 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-12 20:54:30,439 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-12 20:54:30,439 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-12 20:54:30,440 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-12 20:54:30,441 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-12 20:54:30,444 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-12 20:54:30,445 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-12 20:54:30,446 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-12 20:54:30,448 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-12 20:54:30,450 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-12 20:54:30,452 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-12 20:54:30,453 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-12 20:54:30,454 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-12 20:54:30,456 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-12 20:54:30,457 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-12 20:54:30,457 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-12 20:54:30,458 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-12 20:54:30,459 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-12 20:54:30,459 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-12 20:54:30,460 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-12 20:54:30,461 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-12 20:54:30,461 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-12 20:54:30,462 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-12 20:54:30,462 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-12 20:54:30,462 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-12 20:54:30,463 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-12 20:54:30,464 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-12 20:54:30,464 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-12 20:54:30,483 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-12 20:54:30,483 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-12 20:54:30,486 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-12 20:54:30,487 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-12 20:54:30,487 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-12 20:54:30,487 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-12 20:54:30,488 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-12 20:54:30,488 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-12 20:54:30,488 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-12 20:54:30,489 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-12 20:54:30,489 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-12 20:54:30,489 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-12 20:54:30,489 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-12 20:54:30,490 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-12 20:54:30,491 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-12 20:54:30,546 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-12 20:54:30,560 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-12 20:54:30,564 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-12 20:54:30,566 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-12 20:54:30,567 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-12 20:54:30,568 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl [2018-10-12 20:54:30,568 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl' [2018-10-12 20:54:30,668 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-12 20:54:30,670 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-12 20:54:30,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-12 20:54:30,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-12 20:54:30,671 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-12 20:54:30,700 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 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,702 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 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,732 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 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,733 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 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,749 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 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,756 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 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,761 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 12.10 08:54:30" (1/1) ... [2018-10-12 20:54:30,770 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-12 20:54:30,772 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-12 20:54:30,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-12 20:54:30,773 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-12 20:54:30,774 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 12.10 08:54:30" (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 [2018-10-12 20:54:30,842 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-12 20:54:30,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-12 20:54:30,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-12 20:54:31,902 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-12 20:54:31,903 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 12.10 08:54:31 BoogieIcfgContainer [2018-10-12 20:54:31,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-12 20:54:31,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-12 20:54:31,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-12 20:54:31,908 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-12 20:54:31,909 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 12.10 08:54:30" (1/2) ... [2018-10-12 20:54:31,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@389a99fa and model type alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 08:54:31, skipping insertion in model container [2018-10-12 20:54:31,910 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 12.10 08:54:31" (2/2) ... [2018-10-12 20:54:31,912 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl [2018-10-12 20:54:31,923 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-12 20:54:31,932 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-12 20:54:31,952 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-12 20:54:31,982 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-12 20:54:31,983 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-12 20:54:31,983 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-12 20:54:31,983 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-12 20:54:31,984 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-12 20:54:31,984 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-12 20:54:31,984 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-12 20:54:31,984 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-12 20:54:31,984 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-12 20:54:32,007 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2018-10-12 20:54:32,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-12 20:54:32,019 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:32,020 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] [2018-10-12 20:54:32,021 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:32,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:32,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2079339700, now seen corresponding path program 1 times [2018-10-12 20:54:32,097 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:32,449 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:54:32,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-12 20:54:32,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-12 20:54:32,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-12 20:54:32,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-12 20:54:32,476 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 7 states. [2018-10-12 20:54:33,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:33,973 INFO L93 Difference]: Finished difference Result 305 states and 312 transitions. [2018-10-12 20:54:33,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 20:54:33,976 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2018-10-12 20:54:33,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:34,006 INFO L225 Difference]: With dead ends: 305 [2018-10-12 20:54:34,007 INFO L226 Difference]: Without dead ends: 305 [2018-10-12 20:54:34,009 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 [2018-10-12 20:54:34,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-10-12 20:54:34,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 195. [2018-10-12 20:54:34,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-12 20:54:34,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 200 transitions. [2018-10-12 20:54:34,079 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 200 transitions. Word has length 47 [2018-10-12 20:54:34,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:34,080 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 200 transitions. [2018-10-12 20:54:34,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-12 20:54:34,081 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 200 transitions. [2018-10-12 20:54:34,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-12 20:54:34,084 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:34,084 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] [2018-10-12 20:54:34,085 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:34,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:34,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1079299287, now seen corresponding path program 1 times [2018-10-12 20:54:34,087 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:34,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:54:34,326 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-12 20:54:34,328 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-12 20:54:34,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-12 20:54:34,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-12 20:54:34,329 INFO L87 Difference]: Start difference. First operand 195 states and 200 transitions. Second operand 11 states. [2018-10-12 20:54:35,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:35,271 INFO L93 Difference]: Finished difference Result 374 states and 381 transitions. [2018-10-12 20:54:35,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-12 20:54:35,272 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2018-10-12 20:54:35,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:35,275 INFO L225 Difference]: With dead ends: 374 [2018-10-12 20:54:35,276 INFO L226 Difference]: Without dead ends: 363 [2018-10-12 20:54:35,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-10-12 20:54:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-12 20:54:35,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 217. [2018-10-12 20:54:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-12 20:54:35,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 223 transitions. [2018-10-12 20:54:35,296 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 223 transitions. Word has length 74 [2018-10-12 20:54:35,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:35,298 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 223 transitions. [2018-10-12 20:54:35,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-12 20:54:35,299 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 223 transitions. [2018-10-12 20:54:35,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-12 20:54:35,304 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:35,305 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] [2018-10-12 20:54:35,306 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:35,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:35,307 INFO L82 PathProgramCache]: Analyzing trace with hash 598112888, now seen corresponding path program 1 times [2018-10-12 20:54:35,307 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:35,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:35,522 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:35,522 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-12 20:54:35,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-12 20:54:35,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-12 20:54:35,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-12 20:54:35,524 INFO L87 Difference]: Start difference. First operand 217 states and 223 transitions. Second operand 8 states. [2018-10-12 20:54:36,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:36,513 INFO L93 Difference]: Finished difference Result 504 states and 514 transitions. [2018-10-12 20:54:36,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-12 20:54:36,514 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2018-10-12 20:54:36,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:36,519 INFO L225 Difference]: With dead ends: 504 [2018-10-12 20:54:36,519 INFO L226 Difference]: Without dead ends: 500 [2018-10-12 20:54:36,520 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 [2018-10-12 20:54:36,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2018-10-12 20:54:36,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 269. [2018-10-12 20:54:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-12 20:54:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 277 transitions. [2018-10-12 20:54:36,537 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 277 transitions. Word has length 90 [2018-10-12 20:54:36,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:36,538 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 277 transitions. [2018-10-12 20:54:36,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-12 20:54:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 277 transitions. [2018-10-12 20:54:36,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-12 20:54:36,541 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:36,541 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] [2018-10-12 20:54:36,542 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:36,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:36,542 INFO L82 PathProgramCache]: Analyzing trace with hash -2041174887, now seen corresponding path program 1 times [2018-10-12 20:54:36,543 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:36,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-12 20:54:36,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:54:36,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-12 20:54:36,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-12 20:54:36,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-12 20:54:36,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-12 20:54:36,743 INFO L87 Difference]: Start difference. First operand 269 states and 277 transitions. Second operand 9 states. [2018-10-12 20:54:37,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:37,491 INFO L93 Difference]: Finished difference Result 423 states and 432 transitions. [2018-10-12 20:54:37,492 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-12 20:54:37,492 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2018-10-12 20:54:37,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:37,496 INFO L225 Difference]: With dead ends: 423 [2018-10-12 20:54:37,496 INFO L226 Difference]: Without dead ends: 391 [2018-10-12 20:54:37,497 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 [2018-10-12 20:54:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-10-12 20:54:37,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 269. [2018-10-12 20:54:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-12 20:54:37,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 276 transitions. [2018-10-12 20:54:37,509 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 276 transitions. Word has length 106 [2018-10-12 20:54:37,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:37,509 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 276 transitions. [2018-10-12 20:54:37,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-12 20:54:37,509 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 276 transitions. [2018-10-12 20:54:37,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-12 20:54:37,513 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:37,513 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] [2018-10-12 20:54:37,513 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:37,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:37,514 INFO L82 PathProgramCache]: Analyzing trace with hash -17135668, now seen corresponding path program 2 times [2018-10-12 20:54:37,515 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:37,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:54:37,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-12 20:54:37,622 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-12 20:54:37,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-12 20:54:37,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:54:37,622 INFO L87 Difference]: Start difference. First operand 269 states and 276 transitions. Second operand 3 states. [2018-10-12 20:54:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:37,645 INFO L93 Difference]: Finished difference Result 363 states and 369 transitions. [2018-10-12 20:54:37,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-12 20:54:37,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2018-10-12 20:54:37,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:37,649 INFO L225 Difference]: With dead ends: 363 [2018-10-12 20:54:37,649 INFO L226 Difference]: Without dead ends: 359 [2018-10-12 20:54:37,650 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 [2018-10-12 20:54:37,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-12 20:54:37,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 335. [2018-10-12 20:54:37,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-12 20:54:37,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 342 transitions. [2018-10-12 20:54:37,660 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 342 transitions. Word has length 133 [2018-10-12 20:54:37,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:37,661 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 342 transitions. [2018-10-12 20:54:37,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-12 20:54:37,661 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 342 transitions. [2018-10-12 20:54:37,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-12 20:54:37,668 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:37,668 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] [2018-10-12 20:54:37,669 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:37,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:37,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1496584980, now seen corresponding path program 1 times [2018-10-12 20:54:37,671 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-12 20:54:37,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:54:37,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-12 20:54:37,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-12 20:54:37,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-12 20:54:37,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-12 20:54:37,934 INFO L87 Difference]: Start difference. First operand 335 states and 342 transitions. Second operand 8 states. [2018-10-12 20:54:38,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:38,476 INFO L93 Difference]: Finished difference Result 363 states and 369 transitions. [2018-10-12 20:54:38,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-12 20:54:38,478 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2018-10-12 20:54:38,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:38,480 INFO L225 Difference]: With dead ends: 363 [2018-10-12 20:54:38,480 INFO L226 Difference]: Without dead ends: 359 [2018-10-12 20:54:38,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2018-10-12 20:54:38,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-12 20:54:38,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 193. [2018-10-12 20:54:38,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-12 20:54:38,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions. [2018-10-12 20:54:38,487 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 133 [2018-10-12 20:54:38,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:38,488 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions. [2018-10-12 20:54:38,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-12 20:54:38,488 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions. [2018-10-12 20:54:38,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-12 20:54:38,490 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:38,490 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] [2018-10-12 20:54:38,491 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:38,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:38,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1370294765, now seen corresponding path program 1 times [2018-10-12 20:54:38,492 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:39,972 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:39,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-12 20:54:39,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-12 20:54:39,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-12 20:54:39,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=863, Unknown=0, NotChecked=0, Total=930 [2018-10-12 20:54:39,974 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand 31 states. [2018-10-12 20:54:46,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:46,346 INFO L93 Difference]: Finished difference Result 491 states and 498 transitions. [2018-10-12 20:54:46,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-12 20:54:46,347 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 149 [2018-10-12 20:54:46,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:46,350 INFO L225 Difference]: With dead ends: 491 [2018-10-12 20:54:46,351 INFO L226 Difference]: Without dead ends: 491 [2018-10-12 20:54:46,354 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=739, Invalid=5423, Unknown=0, NotChecked=0, Total=6162 [2018-10-12 20:54:46,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-10-12 20:54:46,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 358. [2018-10-12 20:54:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-10-12 20:54:46,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 364 transitions. [2018-10-12 20:54:46,362 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 364 transitions. Word has length 149 [2018-10-12 20:54:46,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:46,362 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 364 transitions. [2018-10-12 20:54:46,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-12 20:54:46,362 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 364 transitions. [2018-10-12 20:54:46,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-12 20:54:46,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:46,365 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] [2018-10-12 20:54:46,365 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:46,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:46,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1798100968, now seen corresponding path program 2 times [2018-10-12 20:54:46,367 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:46,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:47,358 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:54:47,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:47,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-12 20:54:47,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-12 20:54:47,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-12 20:54:47,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2018-10-12 20:54:47,360 INFO L87 Difference]: Start difference. First operand 358 states and 364 transitions. Second operand 31 states. [2018-10-12 20:54:50,742 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 47 [2018-10-12 20:54:51,911 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-10-12 20:54:52,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:54:52,782 INFO L93 Difference]: Finished difference Result 458 states and 464 transitions. [2018-10-12 20:54:52,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-12 20:54:52,783 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 176 [2018-10-12 20:54:52,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:54:52,785 INFO L225 Difference]: With dead ends: 458 [2018-10-12 20:54:52,785 INFO L226 Difference]: Without dead ends: 355 [2018-10-12 20:54:52,787 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=802, Invalid=3890, Unknown=0, NotChecked=0, Total=4692 [2018-10-12 20:54:52,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-10-12 20:54:52,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 277. [2018-10-12 20:54:52,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-10-12 20:54:52,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-10-12 20:54:52,793 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 176 [2018-10-12 20:54:52,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:54:52,794 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-10-12 20:54:52,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-12 20:54:52,794 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-10-12 20:54:52,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-12 20:54:52,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:54:52,796 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] [2018-10-12 20:54:52,797 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:54:52,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:54:52,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1112506631, now seen corresponding path program 1 times [2018-10-12 20:54:52,798 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:54:52,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:54:53,628 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:54:53,822 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-12 20:54:54,115 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2018-10-12 20:54:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-12 20:54:55,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:54:55,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-12 20:54:55,772 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-12 20:54:55,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-12 20:54:55,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1790, Unknown=0, NotChecked=0, Total=1892 [2018-10-12 20:54:55,773 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 44 states. [2018-10-12 20:54:58,976 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-12 20:54:59,187 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-12 20:55:00,843 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2018-10-12 20:55:01,052 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-10-12 20:55:01,299 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2018-10-12 20:55:01,580 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2018-10-12 20:55:02,732 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2018-10-12 20:55:03,064 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2018-10-12 20:55:03,521 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2018-10-12 20:55:03,693 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-12 20:55:04,061 WARN L178 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2018-10-12 20:55:04,310 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2018-10-12 20:55:04,558 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2018-10-12 20:55:04,798 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 83 [2018-10-12 20:55:05,098 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 94 [2018-10-12 20:55:07,367 WARN L178 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2018-10-12 20:55:08,739 WARN L178 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-10-12 20:55:12,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:55:12,123 INFO L93 Difference]: Finished difference Result 499 states and 506 transitions. [2018-10-12 20:55:12,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-12 20:55:12,124 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 192 [2018-10-12 20:55:12,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:55:12,126 INFO L225 Difference]: With dead ends: 499 [2018-10-12 20:55:12,127 INFO L226 Difference]: Without dead ends: 447 [2018-10-12 20:55:12,132 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3990 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=1414, Invalid=15616, Unknown=0, NotChecked=0, Total=17030 [2018-10-12 20:55:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-10-12 20:55:12,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 363. [2018-10-12 20:55:12,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-12 20:55:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 368 transitions. [2018-10-12 20:55:12,140 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 368 transitions. Word has length 192 [2018-10-12 20:55:12,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:55:12,140 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 368 transitions. [2018-10-12 20:55:12,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-12 20:55:12,140 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 368 transitions. [2018-10-12 20:55:12,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-12 20:55:12,143 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:55:12,143 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] [2018-10-12 20:55:12,144 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:55:12,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:55:12,144 INFO L82 PathProgramCache]: Analyzing trace with hash -70913139, now seen corresponding path program 2 times [2018-10-12 20:55:12,145 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:55:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:55:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-12 20:55:16,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:55:16,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-12 20:55:16,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-12 20:55:16,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-12 20:55:16,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=3851, Unknown=0, NotChecked=0, Total=4032 [2018-10-12 20:55:16,361 INFO L87 Difference]: Start difference. First operand 363 states and 368 transitions. Second operand 64 states. [2018-10-12 20:55:19,009 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 25 [2018-10-12 20:55:19,776 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 35 [2018-10-12 20:55:20,227 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 47 [2018-10-12 20:55:20,862 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 56 [2018-10-12 20:55:21,318 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 60 [2018-10-12 20:55:21,548 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-12 20:55:22,106 WARN L178 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-12 20:55:22,310 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2018-10-12 20:55:22,683 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 70 [2018-10-12 20:55:22,914 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2018-10-12 20:55:23,193 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 42 [2018-10-12 20:55:23,547 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 38 [2018-10-12 20:55:24,090 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 46 [2018-10-12 20:55:24,575 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 48 [2018-10-12 20:55:25,357 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 53 [2018-10-12 20:55:25,973 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2018-10-12 20:55:26,274 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 57 [2018-10-12 20:55:26,757 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 52 [2018-10-12 20:55:27,287 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2018-10-12 20:55:27,848 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 120 [2018-10-12 20:55:28,460 WARN L178 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2018-10-12 20:55:29,014 WARN L178 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 126 [2018-10-12 20:55:29,401 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-12 20:55:29,851 WARN L178 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 129 [2018-10-12 20:55:30,073 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2018-10-12 20:55:30,543 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2018-10-12 20:55:30,847 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2018-10-12 20:55:31,218 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 120 [2018-10-12 20:55:31,543 WARN L178 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2018-10-12 20:55:32,077 WARN L178 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 127 [2018-10-12 20:55:32,610 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2018-10-12 20:55:33,058 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2018-10-12 20:55:33,543 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 93 [2018-10-12 20:55:34,174 WARN L178 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 86 [2018-10-12 20:55:34,658 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 94 [2018-10-12 20:55:35,184 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 102 [2018-10-12 20:55:35,415 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2018-10-12 20:55:35,713 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2018-10-12 20:55:36,004 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2018-10-12 20:55:36,539 WARN L178 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 118 [2018-10-12 20:55:36,973 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2018-10-12 20:55:37,274 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-12 20:55:37,769 WARN L178 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 123 [2018-10-12 20:55:38,150 WARN L178 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2018-10-12 20:55:38,429 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-12 20:55:38,958 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 128 [2018-10-12 20:55:39,350 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2018-10-12 20:55:40,591 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 123 [2018-10-12 20:55:41,051 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2018-10-12 20:55:41,571 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 122 [2018-10-12 20:55:41,890 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-10-12 20:55:42,517 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-12 20:55:42,819 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2018-10-12 20:55:43,227 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2018-10-12 20:55:43,524 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-12 20:55:43,994 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-12 20:55:45,343 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2018-10-12 20:55:46,302 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2018-10-12 20:55:46,771 WARN L178 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 111 [2018-10-12 20:55:47,159 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 104 [2018-10-12 20:55:48,486 WARN L178 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 121 [2018-10-12 20:55:49,111 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 125 [2018-10-12 20:55:49,687 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 116 [2018-10-12 20:55:50,017 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2018-10-12 20:55:50,469 WARN L178 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 129 [2018-10-12 20:55:50,943 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 136 [2018-10-12 20:55:51,218 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2018-10-12 20:55:51,402 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2018-10-12 20:55:51,617 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2018-10-12 20:55:51,893 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2018-10-12 20:55:52,432 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2018-10-12 20:55:52,731 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2018-10-12 20:55:53,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:55:53,548 INFO L93 Difference]: Finished difference Result 583 states and 591 transitions. [2018-10-12 20:55:53,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-12 20:55:53,549 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 235 [2018-10-12 20:55:53,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:55:53,552 INFO L225 Difference]: With dead ends: 583 [2018-10-12 20:55:53,552 INFO L226 Difference]: Without dead ends: 531 [2018-10-12 20:55:53,561 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12219 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=3100, Invalid=38720, Unknown=0, NotChecked=0, Total=41820 [2018-10-12 20:55:53,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-12 20:55:53,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 406. [2018-10-12 20:55:53,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2018-10-12 20:55:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 412 transitions. [2018-10-12 20:55:53,569 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 412 transitions. Word has length 235 [2018-10-12 20:55:53,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:55:53,570 INFO L481 AbstractCegarLoop]: Abstraction has 406 states and 412 transitions. [2018-10-12 20:55:53,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-12 20:55:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 412 transitions. [2018-10-12 20:55:53,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-12 20:55:53,573 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:55:53,573 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] [2018-10-12 20:55:53,574 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:55:53,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:55:53,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1362807853, now seen corresponding path program 3 times [2018-10-12 20:55:53,575 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:55:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:55:53,674 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-12 20:55:53,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-12 20:55:53,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-12 20:55:53,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-12 20:55:53,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-12 20:55:53,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-12 20:55:53,676 INFO L87 Difference]: Start difference. First operand 406 states and 412 transitions. Second operand 3 states. [2018-10-12 20:55:53,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:55:53,783 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2018-10-12 20:55:53,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-12 20:55:53,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-10-12 20:55:53,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:55:53,786 INFO L225 Difference]: With dead ends: 333 [2018-10-12 20:55:53,786 INFO L226 Difference]: Without dead ends: 333 [2018-10-12 20:55:53,786 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 [2018-10-12 20:55:53,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-12 20:55:53,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 322. [2018-10-12 20:55:53,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-10-12 20:55:53,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 324 transitions. [2018-10-12 20:55:53,792 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 324 transitions. Word has length 235 [2018-10-12 20:55:53,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:55:53,792 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 324 transitions. [2018-10-12 20:55:53,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-12 20:55:53,792 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 324 transitions. [2018-10-12 20:55:53,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-12 20:55:53,796 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:55:53,797 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] [2018-10-12 20:55:53,797 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:55:53,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:55:53,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1270754983, now seen corresponding path program 4 times [2018-10-12 20:55:53,798 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:55:53,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:55:55,977 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2018-10-12 20:55:57,076 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2018-10-12 20:55:57,397 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2018-10-12 20:55:57,627 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 31 [2018-10-12 20:56:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-12 20:56:01,579 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:56:01,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-10-12 20:56:01,580 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-12 20:56:01,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-12 20:56:01,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=5645, Unknown=0, NotChecked=0, Total=6006 [2018-10-12 20:56:01,581 INFO L87 Difference]: Start difference. First operand 322 states and 324 transitions. Second operand 78 states. [2018-10-12 20:56:02,652 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2018-10-12 20:56:02,936 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2018-10-12 20:56:03,135 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2018-10-12 20:56:03,308 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-12 20:56:03,521 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2018-10-12 20:56:03,749 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2018-10-12 20:56:03,948 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-12 20:56:04,268 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-12 20:56:04,511 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2018-10-12 20:56:04,875 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2018-10-12 20:56:05,228 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2018-10-12 20:56:05,490 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-12 20:56:05,749 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2018-10-12 20:56:06,146 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2018-10-12 20:56:06,369 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-12 20:56:06,759 WARN L178 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2018-10-12 20:56:07,074 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-12 20:56:08,801 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-10-12 20:56:09,065 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-12 20:56:09,406 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2018-10-12 20:56:09,759 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2018-10-12 20:56:10,075 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-12 20:56:10,381 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-12 20:56:10,691 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2018-10-12 20:56:11,221 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2018-10-12 20:56:11,612 WARN L178 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2018-10-12 20:56:11,855 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-12 20:56:12,038 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-12 20:56:12,833 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2018-10-12 20:56:13,156 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2018-10-12 20:56:13,533 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2018-10-12 20:56:13,808 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2018-10-12 20:56:14,104 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2018-10-12 20:56:14,497 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2018-10-12 20:56:14,972 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2018-10-12 20:56:15,323 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 80 [2018-10-12 20:56:15,859 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2018-10-12 20:56:16,261 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2018-10-12 20:56:16,633 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 92 [2018-10-12 20:56:17,178 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 98 [2018-10-12 20:56:17,373 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2018-10-12 20:56:17,626 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-10-12 20:56:17,906 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2018-10-12 20:56:18,133 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2018-10-12 20:56:18,396 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2018-10-12 20:56:18,680 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2018-10-12 20:56:18,936 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2018-10-12 20:56:19,322 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2018-10-12 20:56:19,650 WARN L178 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2018-10-12 20:56:20,101 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2018-10-12 20:56:20,689 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2018-10-12 20:56:20,934 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2018-10-12 20:56:21,376 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2018-10-12 20:56:21,664 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2018-10-12 20:56:23,375 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2018-10-12 20:56:23,939 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2018-10-12 20:56:24,224 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-12 20:56:24,530 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2018-10-12 20:56:24,863 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2018-10-12 20:56:25,474 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2018-10-12 20:56:25,915 WARN L178 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2018-10-12 20:56:26,457 WARN L178 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2018-10-12 20:56:27,221 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 108 [2018-10-12 20:56:27,513 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2018-10-12 20:56:27,799 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2018-10-12 20:56:28,167 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-12 20:56:28,747 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2018-10-12 20:56:29,052 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2018-10-12 20:56:29,283 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-10-12 20:56:29,467 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-10-12 20:56:29,686 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-12 20:56:29,909 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2018-10-12 20:56:30,349 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-12 20:56:30,965 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2018-10-12 20:56:31,214 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2018-10-12 20:56:31,701 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-12 20:56:31,927 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-12 20:56:32,356 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2018-10-12 20:56:32,669 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2018-10-12 20:56:32,963 WARN L178 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2018-10-12 20:56:33,312 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2018-10-12 20:56:33,694 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-10-12 20:56:33,994 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2018-10-12 20:56:34,200 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-12 20:56:34,432 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-12 20:56:34,676 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-12 20:56:34,966 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-12 20:56:35,235 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2018-10-12 20:56:35,567 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-12 20:56:35,808 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2018-10-12 20:56:36,116 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2018-10-12 20:56:36,455 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-12 20:56:36,687 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2018-10-12 20:56:37,137 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-12 20:56:37,404 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2018-10-12 20:56:38,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:56:38,159 INFO L93 Difference]: Finished difference Result 560 states and 563 transitions. [2018-10-12 20:56:38,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-12 20:56:38,159 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 278 [2018-10-12 20:56:38,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:56:38,162 INFO L225 Difference]: With dead ends: 560 [2018-10-12 20:56:38,162 INFO L226 Difference]: Without dead ends: 560 [2018-10-12 20:56:38,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 2 SyntacticMatches, 7 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11491 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=4134, Invalid=37278, Unknown=0, NotChecked=0, Total=41412 [2018-10-12 20:56:38,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2018-10-12 20:56:38,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 446. [2018-10-12 20:56:38,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-10-12 20:56:38,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 449 transitions. [2018-10-12 20:56:38,173 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 449 transitions. Word has length 278 [2018-10-12 20:56:38,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:56:38,174 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 449 transitions. [2018-10-12 20:56:38,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-12 20:56:38,174 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 449 transitions. [2018-10-12 20:56:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-12 20:56:38,178 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:56:38,179 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] [2018-10-12 20:56:38,179 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:56:38,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:56:38,180 INFO L82 PathProgramCache]: Analyzing trace with hash 553831676, now seen corresponding path program 5 times [2018-10-12 20:56:38,180 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:56:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:56:39,011 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 22 proven. 104 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-10-12 20:56:39,011 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:56:39,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-12 20:56:39,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-12 20:56:39,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-12 20:56:39,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2018-10-12 20:56:39,013 INFO L87 Difference]: Start difference. First operand 446 states and 449 transitions. Second operand 24 states. [2018-10-12 20:56:41,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:56:41,307 INFO L93 Difference]: Finished difference Result 455 states and 457 transitions. [2018-10-12 20:56:41,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-12 20:56:41,307 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 305 [2018-10-12 20:56:41,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:56:41,310 INFO L225 Difference]: With dead ends: 455 [2018-10-12 20:56:41,310 INFO L226 Difference]: Without dead ends: 365 [2018-10-12 20:56:41,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=592, Invalid=2378, Unknown=0, NotChecked=0, Total=2970 [2018-10-12 20:56:41,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-10-12 20:56:41,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-10-12 20:56:41,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-10-12 20:56:41,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2018-10-12 20:56:41,317 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 305 [2018-10-12 20:56:41,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:56:41,318 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2018-10-12 20:56:41,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-12 20:56:41,318 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2018-10-12 20:56:41,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-12 20:56:41,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-12 20:56:41,322 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] [2018-10-12 20:56:41,322 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-12 20:56:41,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-12 20:56:41,323 INFO L82 PathProgramCache]: Analyzing trace with hash -956504787, now seen corresponding path program 6 times [2018-10-12 20:56:41,323 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-12 20:56:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-12 20:56:42,385 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-10-12 20:56:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-12 20:56:47,135 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-12 20:56:47,135 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-10-12 20:56:47,135 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-12 20:56:47,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-12 20:56:47,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=5892, Unknown=0, NotChecked=0, Total=6162 [2018-10-12 20:56:47,137 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand 79 states. [2018-10-12 20:56:48,574 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 23 [2018-10-12 20:56:50,161 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 47 [2018-10-12 20:56:50,626 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 56 [2018-10-12 20:56:50,940 WARN L178 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 60 [2018-10-12 20:56:51,413 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 66 [2018-10-12 20:56:51,767 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 71 [2018-10-12 20:56:52,188 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 95 [2018-10-12 20:56:52,543 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 90 [2018-10-12 20:56:52,964 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 97 [2018-10-12 20:56:53,422 WARN L178 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 99 [2018-10-12 20:56:53,903 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2018-10-12 20:56:54,187 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-12 20:56:54,389 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2018-10-12 20:56:54,913 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2018-10-12 20:56:55,093 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2018-10-12 20:56:55,422 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2018-10-12 20:56:55,688 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2018-10-12 20:56:55,992 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-12 20:56:56,322 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2018-10-12 20:56:56,661 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2018-10-12 20:56:56,931 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-12 20:56:57,193 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-12 20:56:57,476 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-12 20:56:57,932 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-10-12 20:56:58,261 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2018-10-12 20:56:58,503 WARN L178 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2018-10-12 20:56:58,705 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-12 20:56:59,044 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-12 20:56:59,317 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-12 20:56:59,910 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 104 [2018-10-12 20:57:00,351 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 106 [2018-10-12 20:57:00,687 WARN L178 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2018-10-12 20:57:01,244 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-12 20:57:01,426 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2018-10-12 20:57:01,751 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2018-10-12 20:57:02,035 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2018-10-12 20:57:02,451 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2018-10-12 20:57:02,757 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-10-12 20:57:03,172 WARN L178 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 102 [2018-10-12 20:57:05,561 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 104 [2018-10-12 20:57:05,886 WARN L178 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2018-10-12 20:57:06,941 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 48 [2018-10-12 20:57:07,168 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 45 [2018-10-12 20:57:07,570 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 46 [2018-10-12 20:57:07,815 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 45 [2018-10-12 20:57:08,116 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 42 [2018-10-12 20:57:08,365 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 46 [2018-10-12 20:57:08,625 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 48 [2018-10-12 20:57:09,161 WARN L178 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 103 [2018-10-12 20:57:09,589 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 101 [2018-10-12 20:57:10,054 WARN L178 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 100 [2018-10-12 20:57:10,505 WARN L178 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 102 [2018-10-12 20:57:10,953 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2018-10-12 20:57:11,227 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2018-10-12 20:57:11,737 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2018-10-12 20:57:12,173 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2018-10-12 20:57:12,512 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2018-10-12 20:57:12,803 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2018-10-12 20:57:13,012 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2018-10-12 20:57:13,317 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2018-10-12 20:57:13,590 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2018-10-12 20:57:13,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-12 20:57:13,961 INFO L93 Difference]: Finished difference Result 374 states and 375 transitions. [2018-10-12 20:57:13,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-12 20:57:13,961 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 321 [2018-10-12 20:57:13,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-12 20:57:13,962 INFO L225 Difference]: With dead ends: 374 [2018-10-12 20:57:13,963 INFO L226 Difference]: Without dead ends: 0 [2018-10-12 20:57:13,965 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7574 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=3204, Invalid=27948, Unknown=0, NotChecked=0, Total=31152 [2018-10-12 20:57:13,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-12 20:57:13,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-12 20:57:13,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-12 20:57:13,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-12 20:57:13,966 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 321 [2018-10-12 20:57:13,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-12 20:57:13,966 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-12 20:57:13,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-12 20:57:13,966 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-12 20:57:13,966 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-12 20:57:13,971 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 12.10 08:57:13 BoogieIcfgContainer [2018-10-12 20:57:13,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-12 20:57:13,973 INFO L168 Benchmark]: Toolchain (without parser) took 163303.85 ms. Allocated memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: 417.9 MB). Free memory was 1.5 GB in the beginning and 1.2 GB in the end (delta: 321.0 MB). Peak memory consumption was 738.9 MB. Max. memory is 7.1 GB. [2018-10-12 20:57:13,973 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 20:57:13,974 INFO L168 Benchmark]: Boogie Preprocessor took 100.19 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-12 20:57:13,974 INFO L168 Benchmark]: RCFGBuilder took 1131.21 ms. Allocated memory is still 1.6 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. [2018-10-12 20:57:13,974 INFO L168 Benchmark]: TraceAbstraction took 162067.08 ms. Allocated memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: 417.9 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 278.3 MB). Peak memory consumption was 696.1 MB. Max. memory is 7.1 GB. [2018-10-12 20:57:13,976 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 0.21 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.19 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1131.21 ms. Allocated memory is still 1.6 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 162067.08 ms. Allocated memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: 417.9 MB). Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 278.3 MB). Peak memory consumption was 696.1 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, 161.9s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 135.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1852 SDtfs, 20386 SDslu, 26548 SDs, 0 SdLazy, 36388 SolverSat, 1804 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1030 GetRequests, 38 SyntacticMatches, 20 SemanticMatches, 972 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37987 ImplicationChecksByTransitivity, 116.1s 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, 23.3s 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-0-2018-10-12_20-57-13-984.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-0-2018-10-12_20-57-13-984.csv Received shutdown request...