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-b8f97f7-m [2018-10-10 15:27:14,474 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:27:14,476 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:27:14,495 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 15:27:14,496 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 15:27:14,497 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 15:27:14,499 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 15:27:14,501 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 15:27:14,504 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 15:27:14,505 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 15:27:14,507 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-10 15:27:14,551 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:27:14,560 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:27:14,561 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:27:14,562 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:27:14,562 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:27:14,562 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:27:14,562 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:27:14,563 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:27:14,563 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:27:14,564 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:27:14,564 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:27:14,564 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:27:14,564 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:27:14,564 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:27:14,565 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:27:14,565 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:27:14,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:27:14,622 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:27:14,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:27:14,628 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:27:14,629 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:27:14,629 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl [2018-10-10 15:27:14,630 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl' [2018-10-10 15:27:14,723 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:27:14,725 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:27:14,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:27:14,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:27:14,726 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:27:14,753 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 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,755 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 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,784 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 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,785 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 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,800 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 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,810 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 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,812 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 10.10 03:27:14" (1/1) ... [2018-10-10 15:27:14,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:27:14,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:27:14,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:27:14,821 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:27:14,824 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 10.10 03:27:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:27:14,894 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:27:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:27:14,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:27:15,849 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:27:15,849 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 10.10 03:27:15 BoogieIcfgContainer [2018-10-10 15:27:15,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:27:15,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:27:15,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:27:15,854 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:27:15,855 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 10.10 03:27:14" (1/2) ... [2018-10-10 15:27:15,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b10349a and model type alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:27:15, skipping insertion in model container [2018-10-10 15:27:15,856 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 10.10 03:27:15" (2/2) ... [2018-10-10 15:27:15,858 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl [2018-10-10 15:27:15,868 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:27:15,876 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:27:15,894 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:27:15,926 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:27:15,927 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:27:15,927 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:27:15,927 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:27:15,927 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:27:15,928 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:27:15,928 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:27:15,928 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:27:15,928 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:27:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2018-10-10 15:27:15,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-10-10 15:27:15,967 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:15,968 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] [2018-10-10 15:27:15,970 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:15,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:15,977 INFO L82 PathProgramCache]: Analyzing trace with hash -2079339700, now seen corresponding path program 1 times [2018-10-10 15:27:16,026 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:16,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:16,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:16,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-10 15:27:16,409 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-10 15:27:16,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-10 15:27:16,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-10 15:27:16,429 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 7 states. [2018-10-10 15:27:17,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:17,922 INFO L93 Difference]: Finished difference Result 305 states and 312 transitions. [2018-10-10 15:27:17,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:27:17,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2018-10-10 15:27:17,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:17,942 INFO L225 Difference]: With dead ends: 305 [2018-10-10 15:27:17,942 INFO L226 Difference]: Without dead ends: 305 [2018-10-10 15:27:17,944 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 [2018-10-10 15:27:17,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2018-10-10 15:27:18,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 195. [2018-10-10 15:27:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-10-10 15:27:18,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 200 transitions. [2018-10-10 15:27:18,021 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 200 transitions. Word has length 47 [2018-10-10 15:27:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:18,022 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 200 transitions. [2018-10-10 15:27:18,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-10 15:27:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 200 transitions. [2018-10-10 15:27:18,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-10-10 15:27:18,029 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:18,029 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] [2018-10-10 15:27:18,030 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:18,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:18,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1079299287, now seen corresponding path program 1 times [2018-10-10 15:27:18,032 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:18,298 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:18,298 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 15:27:18,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:27:18,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:27:18,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:27:18,302 INFO L87 Difference]: Start difference. First operand 195 states and 200 transitions. Second operand 11 states. [2018-10-10 15:27:19,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:19,314 INFO L93 Difference]: Finished difference Result 374 states and 381 transitions. [2018-10-10 15:27:19,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-10 15:27:19,314 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2018-10-10 15:27:19,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:19,318 INFO L225 Difference]: With dead ends: 374 [2018-10-10 15:27:19,318 INFO L226 Difference]: Without dead ends: 363 [2018-10-10 15:27:19,320 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 [2018-10-10 15:27:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2018-10-10 15:27:19,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 217. [2018-10-10 15:27:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-10-10 15:27:19,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 223 transitions. [2018-10-10 15:27:19,339 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 223 transitions. Word has length 74 [2018-10-10 15:27:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:19,340 INFO L481 AbstractCegarLoop]: Abstraction has 217 states and 223 transitions. [2018-10-10 15:27:19,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:27:19,340 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 223 transitions. [2018-10-10 15:27:19,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-10 15:27:19,344 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:19,345 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] [2018-10-10 15:27:19,345 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:19,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:19,345 INFO L82 PathProgramCache]: Analyzing trace with hash 598112888, now seen corresponding path program 1 times [2018-10-10 15:27:19,347 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:19,536 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:19,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-10 15:27:19,537 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-10 15:27:19,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-10 15:27:19,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-10 15:27:19,538 INFO L87 Difference]: Start difference. First operand 217 states and 223 transitions. Second operand 8 states. [2018-10-10 15:27:20,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:20,573 INFO L93 Difference]: Finished difference Result 504 states and 514 transitions. [2018-10-10 15:27:20,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-10 15:27:20,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 90 [2018-10-10 15:27:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:20,579 INFO L225 Difference]: With dead ends: 504 [2018-10-10 15:27:20,579 INFO L226 Difference]: Without dead ends: 500 [2018-10-10 15:27:20,580 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 [2018-10-10 15:27:20,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2018-10-10 15:27:20,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 269. [2018-10-10 15:27:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-10 15:27:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 277 transitions. [2018-10-10 15:27:20,600 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 277 transitions. Word has length 90 [2018-10-10 15:27:20,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:20,601 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 277 transitions. [2018-10-10 15:27:20,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-10 15:27:20,601 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 277 transitions. [2018-10-10 15:27:20,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-10 15:27:20,606 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:20,606 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] [2018-10-10 15:27:20,606 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:20,607 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:20,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2041174887, now seen corresponding path program 1 times [2018-10-10 15:27:20,608 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 15:27:20,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:20,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:27:20,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:27:20,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:27:20,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:27:20,862 INFO L87 Difference]: Start difference. First operand 269 states and 277 transitions. Second operand 9 states. [2018-10-10 15:27:21,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:21,569 INFO L93 Difference]: Finished difference Result 423 states and 432 transitions. [2018-10-10 15:27:21,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 15:27:21,570 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2018-10-10 15:27:21,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:21,574 INFO L225 Difference]: With dead ends: 423 [2018-10-10 15:27:21,574 INFO L226 Difference]: Without dead ends: 391 [2018-10-10 15:27:21,575 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-10-10 15:27:21,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2018-10-10 15:27:21,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 269. [2018-10-10 15:27:21,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2018-10-10 15:27:21,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 276 transitions. [2018-10-10 15:27:21,587 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 276 transitions. Word has length 106 [2018-10-10 15:27:21,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:21,588 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 276 transitions. [2018-10-10 15:27:21,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:27:21,588 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 276 transitions. [2018-10-10 15:27:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-10 15:27:21,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:21,594 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] [2018-10-10 15:27:21,595 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:21,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:21,595 INFO L82 PathProgramCache]: Analyzing trace with hash -17135668, now seen corresponding path program 2 times [2018-10-10 15:27:21,596 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:21,721 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:21,722 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:21,722 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:27:21,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:27:21,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:27:21,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:27:21,724 INFO L87 Difference]: Start difference. First operand 269 states and 276 transitions. Second operand 3 states. [2018-10-10 15:27:21,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:21,839 INFO L93 Difference]: Finished difference Result 363 states and 369 transitions. [2018-10-10 15:27:21,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:27:21,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2018-10-10 15:27:21,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:21,842 INFO L225 Difference]: With dead ends: 363 [2018-10-10 15:27:21,843 INFO L226 Difference]: Without dead ends: 359 [2018-10-10 15:27:21,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:27:21,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-10 15:27:21,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 335. [2018-10-10 15:27:21,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2018-10-10 15:27:21,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 342 transitions. [2018-10-10 15:27:21,854 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 342 transitions. Word has length 133 [2018-10-10 15:27:21,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:21,854 INFO L481 AbstractCegarLoop]: Abstraction has 335 states and 342 transitions. [2018-10-10 15:27:21,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:27:21,855 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 342 transitions. [2018-10-10 15:27:21,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-10 15:27:21,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:21,858 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] [2018-10-10 15:27:21,859 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:21,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:21,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1496584980, now seen corresponding path program 1 times [2018-10-10 15:27:21,860 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-10 15:27:22,072 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:22,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 15:27:22,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-10 15:27:22,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-10 15:27:22,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-10-10 15:27:22,073 INFO L87 Difference]: Start difference. First operand 335 states and 342 transitions. Second operand 8 states. [2018-10-10 15:27:22,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:22,645 INFO L93 Difference]: Finished difference Result 363 states and 369 transitions. [2018-10-10 15:27:22,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:27:22,645 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 133 [2018-10-10 15:27:22,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:22,647 INFO L225 Difference]: With dead ends: 363 [2018-10-10 15:27:22,648 INFO L226 Difference]: Without dead ends: 359 [2018-10-10 15:27:22,648 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 [2018-10-10 15:27:22,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2018-10-10 15:27:22,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 193. [2018-10-10 15:27:22,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-10-10 15:27:22,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 196 transitions. [2018-10-10 15:27:22,654 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 196 transitions. Word has length 133 [2018-10-10 15:27:22,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:22,655 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 196 transitions. [2018-10-10 15:27:22,655 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-10 15:27:22,655 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 196 transitions. [2018-10-10 15:27:22,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-10 15:27:22,657 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:22,657 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] [2018-10-10 15:27:22,658 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:22,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:22,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1370294765, now seen corresponding path program 1 times [2018-10-10 15:27:22,659 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:23,962 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:23,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-10 15:27:23,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-10 15:27:23,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-10 15:27:23,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=863, Unknown=0, NotChecked=0, Total=930 [2018-10-10 15:27:23,964 INFO L87 Difference]: Start difference. First operand 193 states and 196 transitions. Second operand 31 states. [2018-10-10 15:27:27,193 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2018-10-10 15:27:30,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:30,186 INFO L93 Difference]: Finished difference Result 491 states and 498 transitions. [2018-10-10 15:27:30,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-10-10 15:27:30,187 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 149 [2018-10-10 15:27:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:30,191 INFO L225 Difference]: With dead ends: 491 [2018-10-10 15:27:30,191 INFO L226 Difference]: Without dead ends: 491 [2018-10-10 15:27:30,194 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1188 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=739, Invalid=5423, Unknown=0, NotChecked=0, Total=6162 [2018-10-10 15:27:30,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2018-10-10 15:27:30,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 358. [2018-10-10 15:27:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2018-10-10 15:27:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 364 transitions. [2018-10-10 15:27:30,202 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 364 transitions. Word has length 149 [2018-10-10 15:27:30,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:30,203 INFO L481 AbstractCegarLoop]: Abstraction has 358 states and 364 transitions. [2018-10-10 15:27:30,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-10 15:27:30,203 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 364 transitions. [2018-10-10 15:27:30,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-10-10 15:27:30,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:30,206 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] [2018-10-10 15:27:30,206 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:30,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:30,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1798100968, now seen corresponding path program 2 times [2018-10-10 15:27:30,207 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:30,950 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-10 15:27:31,194 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-10 15:27:31,466 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-10 15:27:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:32,335 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:32,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-10 15:27:32,336 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-10 15:27:32,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-10 15:27:32,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2018-10-10 15:27:32,337 INFO L87 Difference]: Start difference. First operand 358 states and 364 transitions. Second operand 31 states. [2018-10-10 15:27:35,888 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2018-10-10 15:27:37,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:37,251 INFO L93 Difference]: Finished difference Result 458 states and 464 transitions. [2018-10-10 15:27:37,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-10 15:27:37,252 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 176 [2018-10-10 15:27:37,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:37,255 INFO L225 Difference]: With dead ends: 458 [2018-10-10 15:27:37,255 INFO L226 Difference]: Without dead ends: 355 [2018-10-10 15:27:37,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=802, Invalid=3890, Unknown=0, NotChecked=0, Total=4692 [2018-10-10 15:27:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-10-10 15:27:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 277. [2018-10-10 15:27:37,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-10-10 15:27:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 281 transitions. [2018-10-10 15:27:37,263 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 281 transitions. Word has length 176 [2018-10-10 15:27:37,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:37,263 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 281 transitions. [2018-10-10 15:27:37,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-10 15:27:37,264 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 281 transitions. [2018-10-10 15:27:37,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-10 15:27:37,266 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:37,266 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] [2018-10-10 15:27:37,266 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:37,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:37,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1112506631, now seen corresponding path program 1 times [2018-10-10 15:27:37,267 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 15:27:39,304 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:39,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2018-10-10 15:27:39,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2018-10-10 15:27:39,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2018-10-10 15:27:39,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1790, Unknown=0, NotChecked=0, Total=1892 [2018-10-10 15:27:39,306 INFO L87 Difference]: Start difference. First operand 277 states and 281 transitions. Second operand 44 states. [2018-10-10 15:27:42,181 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-10 15:27:42,545 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-10 15:27:42,766 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-10 15:27:44,248 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2018-10-10 15:27:44,505 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2018-10-10 15:27:44,685 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-10-10 15:27:44,903 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2018-10-10 15:27:45,214 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2018-10-10 15:27:46,442 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2018-10-10 15:27:46,741 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2018-10-10 15:27:47,002 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 61 [2018-10-10 15:27:47,202 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2018-10-10 15:27:47,427 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-10 15:27:48,117 WARN L178 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2018-10-10 15:27:48,373 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2018-10-10 15:27:48,611 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2018-10-10 15:27:48,844 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 83 [2018-10-10 15:27:49,132 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 94 [2018-10-10 15:27:52,228 WARN L178 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-10-10 15:27:56,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:56,069 INFO L93 Difference]: Finished difference Result 499 states and 506 transitions. [2018-10-10 15:27:56,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-10 15:27:56,070 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 192 [2018-10-10 15:27:56,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:56,073 INFO L225 Difference]: With dead ends: 499 [2018-10-10 15:27:56,073 INFO L226 Difference]: Without dead ends: 447 [2018-10-10 15:27:56,077 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3990 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=1414, Invalid=15616, Unknown=0, NotChecked=0, Total=17030 [2018-10-10 15:27:56,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-10-10 15:27:56,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 363. [2018-10-10 15:27:56,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2018-10-10 15:27:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 368 transitions. [2018-10-10 15:27:56,085 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 368 transitions. Word has length 192 [2018-10-10 15:27:56,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:56,085 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 368 transitions. [2018-10-10 15:27:56,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2018-10-10 15:27:56,085 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 368 transitions. [2018-10-10 15:27:56,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-10 15:27:56,088 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:56,088 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] [2018-10-10 15:27:56,089 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:56,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:56,089 INFO L82 PathProgramCache]: Analyzing trace with hash -70913139, now seen corresponding path program 2 times [2018-10-10 15:27:56,090 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 15:28:00,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:28:00,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-10 15:28:00,582 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-10 15:28:00,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-10 15:28:00,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=3851, Unknown=0, NotChecked=0, Total=4032 [2018-10-10 15:28:00,584 INFO L87 Difference]: Start difference. First operand 363 states and 368 transitions. Second operand 64 states. [2018-10-10 15:28:03,123 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 23 [2018-10-10 15:28:04,160 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 35 [2018-10-10 15:28:04,629 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 47 [2018-10-10 15:28:05,304 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 56 [2018-10-10 15:28:05,815 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 60 [2018-10-10 15:28:06,024 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-10 15:28:06,640 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 66 [2018-10-10 15:28:06,849 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 64 [2018-10-10 15:28:07,219 WARN L178 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 70 [2018-10-10 15:28:07,443 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 68 [2018-10-10 15:28:07,777 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 42 [2018-10-10 15:28:08,228 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 38 [2018-10-10 15:28:08,740 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 46 [2018-10-10 15:28:09,234 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 48 [2018-10-10 15:28:10,011 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 53 [2018-10-10 15:28:10,602 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 58 [2018-10-10 15:28:10,897 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 57 [2018-10-10 15:28:11,304 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 52 [2018-10-10 15:28:11,779 WARN L178 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 117 [2018-10-10 15:28:12,334 WARN L178 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 120 [2018-10-10 15:28:13,024 WARN L178 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 124 [2018-10-10 15:28:13,255 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-10 15:28:13,687 WARN L178 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 126 [2018-10-10 15:28:14,133 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2018-10-10 15:28:14,608 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 129 [2018-10-10 15:28:14,840 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2018-10-10 15:28:15,320 WARN L178 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 132 [2018-10-10 15:28:15,641 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2018-10-10 15:28:16,018 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 120 [2018-10-10 15:28:16,349 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 98 [2018-10-10 15:28:16,774 WARN L178 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 127 [2018-10-10 15:28:17,354 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2018-10-10 15:28:17,854 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 81 [2018-10-10 15:28:18,029 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-10-10 15:28:18,450 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 93 [2018-10-10 15:28:18,619 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-10 15:28:19,142 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 86 [2018-10-10 15:28:19,664 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 94 [2018-10-10 15:28:20,252 WARN L178 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 102 [2018-10-10 15:28:20,504 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 73 [2018-10-10 15:28:20,831 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2018-10-10 15:28:21,198 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2018-10-10 15:28:21,758 WARN L178 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 118 [2018-10-10 15:28:22,175 WARN L178 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2018-10-10 15:28:22,448 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-10 15:28:22,916 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 123 [2018-10-10 15:28:23,373 WARN L178 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2018-10-10 15:28:23,685 WARN L178 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 89 [2018-10-10 15:28:24,214 WARN L178 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 128 [2018-10-10 15:28:24,623 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2018-10-10 15:28:25,910 WARN L178 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 123 [2018-10-10 15:28:26,400 WARN L178 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 127 [2018-10-10 15:28:26,965 WARN L178 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 122 [2018-10-10 15:28:27,566 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 70 [2018-10-10 15:28:27,847 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-10 15:28:28,176 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2018-10-10 15:28:28,690 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2018-10-10 15:28:29,022 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2018-10-10 15:28:29,539 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-10 15:28:30,985 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 109 [2018-10-10 15:28:31,978 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 116 [2018-10-10 15:28:32,462 WARN L178 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 111 [2018-10-10 15:28:32,824 WARN L178 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 104 [2018-10-10 15:28:33,555 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2018-10-10 15:28:34,285 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 121 [2018-10-10 15:28:34,933 WARN L178 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 125 [2018-10-10 15:28:35,502 WARN L178 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 116 [2018-10-10 15:28:35,839 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 100 [2018-10-10 15:28:36,312 WARN L178 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 129 [2018-10-10 15:28:36,798 WARN L178 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 136 [2018-10-10 15:28:37,084 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2018-10-10 15:28:37,284 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2018-10-10 15:28:37,543 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2018-10-10 15:28:37,812 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2018-10-10 15:28:38,275 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2018-10-10 15:28:38,658 WARN L178 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2018-10-10 15:28:39,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:39,519 INFO L93 Difference]: Finished difference Result 583 states and 591 transitions. [2018-10-10 15:28:39,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2018-10-10 15:28:39,523 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 235 [2018-10-10 15:28:39,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:39,525 INFO L225 Difference]: With dead ends: 583 [2018-10-10 15:28:39,525 INFO L226 Difference]: Without dead ends: 531 [2018-10-10 15:28:39,534 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12219 ImplicationChecksByTransitivity, 34.1s TimeCoverageRelationStatistics Valid=3100, Invalid=38720, Unknown=0, NotChecked=0, Total=41820 [2018-10-10 15:28:39,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-10 15:28:39,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 406. [2018-10-10 15:28:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 406 states. [2018-10-10 15:28:39,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 412 transitions. [2018-10-10 15:28:39,544 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 412 transitions. Word has length 235 [2018-10-10 15:28:39,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:39,544 INFO L481 AbstractCegarLoop]: Abstraction has 406 states and 412 transitions. [2018-10-10 15:28:39,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-10 15:28:39,544 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 412 transitions. [2018-10-10 15:28:39,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-10 15:28:39,547 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:39,547 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] [2018-10-10 15:28:39,547 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:39,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:39,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1362807853, now seen corresponding path program 3 times [2018-10-10 15:28:39,549 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-10-10 15:28:39,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:28:39,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:28:39,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:28:39,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:28:39,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:28:39,635 INFO L87 Difference]: Start difference. First operand 406 states and 412 transitions. Second operand 3 states. [2018-10-10 15:28:39,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:39,708 INFO L93 Difference]: Finished difference Result 333 states and 335 transitions. [2018-10-10 15:28:39,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:28:39,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 235 [2018-10-10 15:28:39,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:39,710 INFO L225 Difference]: With dead ends: 333 [2018-10-10 15:28:39,710 INFO L226 Difference]: Without dead ends: 333 [2018-10-10 15:28:39,711 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 [2018-10-10 15:28:39,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-10-10 15:28:39,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 322. [2018-10-10 15:28:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-10-10 15:28:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 324 transitions. [2018-10-10 15:28:39,716 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 324 transitions. Word has length 235 [2018-10-10 15:28:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:39,717 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 324 transitions. [2018-10-10 15:28:39,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:28:39,717 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 324 transitions. [2018-10-10 15:28:39,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-10 15:28:39,720 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:39,720 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] [2018-10-10 15:28:39,720 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:39,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:39,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1270754983, now seen corresponding path program 4 times [2018-10-10 15:28:39,722 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:41,842 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2018-10-10 15:28:42,927 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 30 [2018-10-10 15:28:43,653 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 27 [2018-10-10 15:28:47,424 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 241 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:28:47,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:28:47,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2018-10-10 15:28:47,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-10-10 15:28:47,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-10-10 15:28:47,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=5645, Unknown=0, NotChecked=0, Total=6006 [2018-10-10 15:28:47,426 INFO L87 Difference]: Start difference. First operand 322 states and 324 transitions. Second operand 78 states. [2018-10-10 15:28:48,418 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 66 [2018-10-10 15:28:48,668 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2018-10-10 15:28:48,990 WARN L178 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2018-10-10 15:28:49,201 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2018-10-10 15:28:49,413 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2018-10-10 15:28:49,651 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2018-10-10 15:28:49,846 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-10 15:28:50,167 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2018-10-10 15:28:50,435 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 58 [2018-10-10 15:28:50,790 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 55 [2018-10-10 15:28:51,138 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 49 [2018-10-10 15:28:51,403 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2018-10-10 15:28:51,684 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2018-10-10 15:28:52,095 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 62 [2018-10-10 15:28:52,329 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-10 15:28:52,740 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 68 [2018-10-10 15:28:53,063 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-10 15:28:54,115 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2018-10-10 15:28:54,775 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2018-10-10 15:28:55,045 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-10 15:28:55,393 WARN L178 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 77 [2018-10-10 15:28:55,741 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2018-10-10 15:28:56,055 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-10 15:28:56,356 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2018-10-10 15:28:56,674 WARN L178 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2018-10-10 15:28:57,204 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2018-10-10 15:28:57,598 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2018-10-10 15:28:57,854 WARN L178 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-10 15:28:58,043 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2018-10-10 15:28:58,767 WARN L178 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2018-10-10 15:28:59,121 WARN L178 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2018-10-10 15:28:59,413 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2018-10-10 15:28:59,683 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2018-10-10 15:28:59,984 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 70 [2018-10-10 15:29:00,382 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2018-10-10 15:29:00,877 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 77 [2018-10-10 15:29:01,245 WARN L178 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 80 [2018-10-10 15:29:01,788 WARN L178 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2018-10-10 15:29:02,204 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2018-10-10 15:29:02,588 WARN L178 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 92 [2018-10-10 15:29:03,132 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 98 [2018-10-10 15:29:03,313 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2018-10-10 15:29:03,562 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 67 [2018-10-10 15:29:03,757 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2018-10-10 15:29:03,960 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2018-10-10 15:29:04,341 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2018-10-10 15:29:04,621 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2018-10-10 15:29:04,863 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2018-10-10 15:29:05,248 WARN L178 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2018-10-10 15:29:05,572 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 84 [2018-10-10 15:29:06,030 WARN L178 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 95 [2018-10-10 15:29:06,628 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 59 [2018-10-10 15:29:06,876 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 67 [2018-10-10 15:29:07,317 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2018-10-10 15:29:07,606 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2018-10-10 15:29:09,257 WARN L178 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2018-10-10 15:29:09,932 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2018-10-10 15:29:10,264 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2018-10-10 15:29:10,581 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2018-10-10 15:29:10,935 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 78 [2018-10-10 15:29:11,575 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 104 [2018-10-10 15:29:11,976 WARN L178 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 102 [2018-10-10 15:29:12,519 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2018-10-10 15:29:12,904 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2018-10-10 15:29:13,330 WARN L178 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 108 [2018-10-10 15:29:13,615 WARN L178 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2018-10-10 15:29:13,937 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 69 [2018-10-10 15:29:14,241 WARN L178 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 68 [2018-10-10 15:29:14,894 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 72 [2018-10-10 15:29:15,194 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 74 [2018-10-10 15:29:15,427 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-10-10 15:29:15,618 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-10-10 15:29:15,842 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-10 15:29:16,071 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2018-10-10 15:29:16,370 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-10 15:29:16,997 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 61 [2018-10-10 15:29:17,245 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2018-10-10 15:29:17,723 WARN L178 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2018-10-10 15:29:17,950 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2018-10-10 15:29:18,381 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2018-10-10 15:29:18,695 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 70 [2018-10-10 15:29:18,980 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 71 [2018-10-10 15:29:19,205 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2018-10-10 15:29:19,603 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-10-10 15:29:19,923 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2018-10-10 15:29:20,115 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-10 15:29:20,327 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-10 15:29:20,541 WARN L178 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-10 15:29:20,818 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2018-10-10 15:29:21,362 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-10 15:29:21,573 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2018-10-10 15:29:22,105 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-10 15:29:22,311 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2018-10-10 15:29:22,699 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2018-10-10 15:29:22,962 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2018-10-10 15:29:23,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:29:23,656 INFO L93 Difference]: Finished difference Result 560 states and 563 transitions. [2018-10-10 15:29:23,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2018-10-10 15:29:23,656 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 278 [2018-10-10 15:29:23,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:29:23,659 INFO L225 Difference]: With dead ends: 560 [2018-10-10 15:29:23,659 INFO L226 Difference]: Without dead ends: 560 [2018-10-10 15:29:23,662 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 2 SyntacticMatches, 7 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11491 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=4134, Invalid=37278, Unknown=0, NotChecked=0, Total=41412 [2018-10-10 15:29:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2018-10-10 15:29:23,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 446. [2018-10-10 15:29:23,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2018-10-10 15:29:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 449 transitions. [2018-10-10 15:29:23,669 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 449 transitions. Word has length 278 [2018-10-10 15:29:23,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:29:23,670 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 449 transitions. [2018-10-10 15:29:23,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-10-10 15:29:23,670 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 449 transitions. [2018-10-10 15:29:23,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-10 15:29:23,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:29:23,672 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] [2018-10-10 15:29:23,673 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:29:23,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:29:23,673 INFO L82 PathProgramCache]: Analyzing trace with hash 553831676, now seen corresponding path program 5 times [2018-10-10 15:29:23,674 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:29:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:29:24,414 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-10 15:29:25,128 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 22 proven. 104 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-10-10 15:29:25,129 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:29:25,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-10 15:29:25,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-10 15:29:25,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-10 15:29:25,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2018-10-10 15:29:25,130 INFO L87 Difference]: Start difference. First operand 446 states and 449 transitions. Second operand 24 states. [2018-10-10 15:29:27,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:29:27,509 INFO L93 Difference]: Finished difference Result 455 states and 457 transitions. [2018-10-10 15:29:27,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-10 15:29:27,509 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 305 [2018-10-10 15:29:27,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:29:27,512 INFO L225 Difference]: With dead ends: 455 [2018-10-10 15:29:27,512 INFO L226 Difference]: Without dead ends: 365 [2018-10-10 15:29:27,512 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=592, Invalid=2378, Unknown=0, NotChecked=0, Total=2970 [2018-10-10 15:29:27,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-10-10 15:29:27,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2018-10-10 15:29:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2018-10-10 15:29:27,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 366 transitions. [2018-10-10 15:29:27,519 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 366 transitions. Word has length 305 [2018-10-10 15:29:27,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:29:27,519 INFO L481 AbstractCegarLoop]: Abstraction has 365 states and 366 transitions. [2018-10-10 15:29:27,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-10 15:29:27,519 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 366 transitions. [2018-10-10 15:29:27,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2018-10-10 15:29:27,521 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:29:27,522 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] [2018-10-10 15:29:27,522 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:29:27,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:29:27,522 INFO L82 PathProgramCache]: Analyzing trace with hash -956504787, now seen corresponding path program 6 times [2018-10-10 15:29:27,523 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:29:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:29:28,628 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-10-10 15:29:28,877 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2018-10-10 15:29:33,633 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-10 15:29:33,633 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:29:33,633 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2018-10-10 15:29:33,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2018-10-10 15:29:33,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2018-10-10 15:29:33,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=5892, Unknown=0, NotChecked=0, Total=6162 [2018-10-10 15:29:33,635 INFO L87 Difference]: Start difference. First operand 365 states and 366 transitions. Second operand 79 states. [2018-10-10 15:29:34,890 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 28 [2018-10-10 15:29:36,588 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 47 [2018-10-10 15:29:37,076 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 56 [2018-10-10 15:29:37,385 WARN L178 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 60 [2018-10-10 15:29:37,865 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 66 [2018-10-10 15:29:38,222 WARN L178 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 71 [2018-10-10 15:29:38,644 WARN L178 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 95 [2018-10-10 15:29:39,037 WARN L178 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 90 [2018-10-10 15:29:39,472 WARN L178 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 97 [2018-10-10 15:29:39,964 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 99 [2018-10-10 15:29:40,389 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 57 [2018-10-10 15:29:40,670 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 59 [2018-10-10 15:29:40,878 WARN L178 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 52 [2018-10-10 15:29:41,415 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2018-10-10 15:29:41,595 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 53 [2018-10-10 15:29:41,905 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2018-10-10 15:29:42,177 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2018-10-10 15:29:42,472 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2018-10-10 15:29:42,799 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2018-10-10 15:29:43,140 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 75 [2018-10-10 15:29:43,409 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-10-10 15:29:43,670 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2018-10-10 15:29:43,951 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2018-10-10 15:29:44,403 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2018-10-10 15:29:44,738 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 85 [2018-10-10 15:29:44,987 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2018-10-10 15:29:45,306 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2018-10-10 15:29:45,593 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2018-10-10 15:29:45,853 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2018-10-10 15:29:46,451 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 104 [2018-10-10 15:29:46,890 WARN L178 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 106 [2018-10-10 15:29:47,227 WARN L178 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2018-10-10 15:29:47,744 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-10 15:29:47,910 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 59 [2018-10-10 15:29:48,214 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2018-10-10 15:29:48,492 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2018-10-10 15:29:48,923 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2018-10-10 15:29:49,246 WARN L178 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 78 [2018-10-10 15:29:49,667 WARN L178 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 102 [2018-10-10 15:29:52,103 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 104 [2018-10-10 15:29:52,437 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2018-10-10 15:29:52,852 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2018-10-10 15:29:53,546 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 48 [2018-10-10 15:29:53,777 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 45 [2018-10-10 15:29:54,190 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 46 [2018-10-10 15:29:54,439 WARN L178 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 45 [2018-10-10 15:29:54,758 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 42 [2018-10-10 15:29:55,017 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 46 [2018-10-10 15:29:55,296 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 48 [2018-10-10 15:29:55,870 WARN L178 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 103 [2018-10-10 15:29:56,276 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 101 [2018-10-10 15:29:56,734 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 100 [2018-10-10 15:29:57,193 WARN L178 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 102 [2018-10-10 15:29:57,646 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2018-10-10 15:29:57,924 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 65 [2018-10-10 15:29:58,415 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2018-10-10 15:29:58,859 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2018-10-10 15:29:59,185 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2018-10-10 15:29:59,464 WARN L178 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 70 [2018-10-10 15:29:59,683 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2018-10-10 15:29:59,987 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2018-10-10 15:30:00,259 WARN L178 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 71 [2018-10-10 15:30:00,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:30:00,830 INFO L93 Difference]: Finished difference Result 374 states and 375 transitions. [2018-10-10 15:30:00,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2018-10-10 15:30:00,830 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 321 [2018-10-10 15:30:00,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:30:00,831 INFO L225 Difference]: With dead ends: 374 [2018-10-10 15:30:00,831 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:30:00,833 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 4 SyntacticMatches, 5 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7574 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=3204, Invalid=27948, Unknown=0, NotChecked=0, Total=31152 [2018-10-10 15:30:00,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:30:00,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:30:00,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:30:00,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:30:00,834 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 321 [2018-10-10 15:30:00,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:30:00,834 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:30:00,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2018-10-10 15:30:00,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:30:00,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:30:00,840 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 10.10 03:30:00 BoogieIcfgContainer [2018-10-10 15:30:00,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:30:00,841 INFO L168 Benchmark]: Toolchain (without parser) took 166116.95 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 241.2 MB). Free memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: -248.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:30:00,841 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:30:00,842 INFO L168 Benchmark]: Boogie Preprocessor took 94.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:30:00,842 INFO L168 Benchmark]: RCFGBuilder took 1028.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-10 15:30:00,842 INFO L168 Benchmark]: TraceAbstraction took 164988.77 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 241.2 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -290.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:30:00,844 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 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.95 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1028.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 164988.77 ms. Allocated memory was 1.5 GB in the beginning and 1.8 GB in the end (delta: 241.2 MB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -290.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 260]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. SAFE Result, 164.9s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 137.7s 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, 119.1s 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, 24.6s InterpolantComputationTime, 2474 NumberOfCodeBlocks, 2474 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 2460 ConstructedInterpolants, 0 QuantifiedInterpolants, 7354129 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 419/1368 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_47.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-30-00-852.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-0-2018-10-10_15-30-00-852.csv Received shutdown request...