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_43.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:34:09,225 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:34:09,227 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:34:09,239 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:34:09,240 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:34:09,241 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:34:09,242 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:34:09,244 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:34:09,246 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:34:09,246 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:34:09,247 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-14 16:34:09,272 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-14 16:34:09,282 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:34:09,283 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:34:09,284 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:34:09,284 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:34:09,284 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:34:09,284 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:34:09,285 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:34:09,285 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:34:09,286 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:34:09,286 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:34:09,286 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:34:09,286 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:34:09,286 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:34:09,287 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:34:09,287 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:34:09,329 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:34:09,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:34:09,346 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:34:09,348 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:34:09,349 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:34:09,349 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl [2018-10-14 16:34:09,350 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl' [2018-10-14 16:34:09,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:34:09,427 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:34:09,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:34:09,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:34:09,428 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:34:09,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,483 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... [2018-10-14 16:34:09,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:34:09,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:34:09,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:34:09,513 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:34:09,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-14 16:34:09,591 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:34:09,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:34:09,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:34:10,721 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:34:10,722 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:34:10 BoogieIcfgContainer [2018-10-14 16:34:10,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:34:10,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:34:10,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:34:10,727 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:34:10,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:34:09" (1/2) ... [2018-10-14 16:34:10,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3d3081 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:34:10, skipping insertion in model container [2018-10-14 16:34:10,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:34:10" (2/2) ... [2018-10-14 16:34:10,731 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl [2018-10-14 16:34:10,741 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:34:10,755 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:34:10,776 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:34:10,810 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:34:10,811 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:34:10,811 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:34:10,811 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:34:10,811 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:34:10,811 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:34:10,812 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:34:10,812 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:34:10,812 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:34:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states. [2018-10-14 16:34:10,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-14 16:34:10,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:10,864 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:10,865 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:10,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:10,873 INFO L82 PathProgramCache]: Analyzing trace with hash -287333896, now seen corresponding path program 1 times [2018-10-14 16:34:10,923 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:11,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:11,548 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:11,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-14 16:34:11,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:34:11,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:34:11,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:34:11,573 INFO L87 Difference]: Start difference. First operand 139 states. Second operand 11 states. [2018-10-14 16:34:12,020 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-10-14 16:34:12,282 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-10-14 16:34:13,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:13,449 INFO L93 Difference]: Finished difference Result 259 states and 264 transitions. [2018-10-14 16:34:13,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-14 16:34:13,450 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 63 [2018-10-14 16:34:13,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:13,466 INFO L225 Difference]: With dead ends: 259 [2018-10-14 16:34:13,466 INFO L226 Difference]: Without dead ends: 163 [2018-10-14 16:34:13,469 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2018-10-14 16:34:13,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2018-10-14 16:34:13,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 139. [2018-10-14 16:34:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2018-10-14 16:34:13,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 141 transitions. [2018-10-14 16:34:13,526 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 141 transitions. Word has length 63 [2018-10-14 16:34:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:13,526 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 141 transitions. [2018-10-14 16:34:13,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:34:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 141 transitions. [2018-10-14 16:34:13,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-14 16:34:13,535 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:13,535 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:13,536 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:13,536 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:13,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1820774244, now seen corresponding path program 1 times [2018-10-14 16:34:13,537 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:14,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:14,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2018-10-14 16:34:14,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-14 16:34:14,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-14 16:34:14,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2018-10-14 16:34:14,512 INFO L87 Difference]: Start difference. First operand 139 states and 141 transitions. Second operand 27 states. [2018-10-14 16:34:16,383 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2018-10-14 16:34:16,822 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2018-10-14 16:34:17,018 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2018-10-14 16:34:18,648 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-14 16:34:19,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:19,999 INFO L93 Difference]: Finished difference Result 363 states and 370 transitions. [2018-10-14 16:34:19,999 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-10-14 16:34:20,000 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2018-10-14 16:34:20,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:20,003 INFO L225 Difference]: With dead ends: 363 [2018-10-14 16:34:20,004 INFO L226 Difference]: Without dead ends: 271 [2018-10-14 16:34:20,006 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 700 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=538, Invalid=3494, Unknown=0, NotChecked=0, Total=4032 [2018-10-14 16:34:20,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2018-10-14 16:34:20,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 182. [2018-10-14 16:34:20,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-10-14 16:34:20,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 185 transitions. [2018-10-14 16:34:20,021 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 185 transitions. Word has length 106 [2018-10-14 16:34:20,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:20,022 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 185 transitions. [2018-10-14 16:34:20,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2018-10-14 16:34:20,022 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 185 transitions. [2018-10-14 16:34:20,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-14 16:34:20,025 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:20,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:20,025 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:20,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:20,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1814688900, now seen corresponding path program 1 times [2018-10-14 16:34:20,027 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:20,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:20,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:20,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:34:20,094 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:34:20,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:34:20,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:34:20,095 INFO L87 Difference]: Start difference. First operand 182 states and 185 transitions. Second operand 3 states. [2018-10-14 16:34:20,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:20,132 INFO L93 Difference]: Finished difference Result 270 states and 273 transitions. [2018-10-14 16:34:20,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:34:20,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2018-10-14 16:34:20,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:20,139 INFO L225 Difference]: With dead ends: 270 [2018-10-14 16:34:20,139 INFO L226 Difference]: Without dead ends: 270 [2018-10-14 16:34:20,140 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:34:20,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2018-10-14 16:34:20,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 216. [2018-10-14 16:34:20,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2018-10-14 16:34:20,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 219 transitions. [2018-10-14 16:34:20,167 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 219 transitions. Word has length 106 [2018-10-14 16:34:20,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:20,171 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 219 transitions. [2018-10-14 16:34:20,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:34:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 219 transitions. [2018-10-14 16:34:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-14 16:34:20,177 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:20,178 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-14 16:34:20,178 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:20,178 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:20,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1455552120, now seen corresponding path program 2 times [2018-10-14 16:34:20,181 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:20,337 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:20,337 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:34:20,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:34:20,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:34:20,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:34:20,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:34:20,339 INFO L87 Difference]: Start difference. First operand 216 states and 219 transitions. Second operand 3 states. [2018-10-14 16:34:20,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:20,480 INFO L93 Difference]: Finished difference Result 260 states and 261 transitions. [2018-10-14 16:34:20,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:34:20,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2018-10-14 16:34:20,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:20,487 INFO L225 Difference]: With dead ends: 260 [2018-10-14 16:34:20,487 INFO L226 Difference]: Without dead ends: 258 [2018-10-14 16:34:20,487 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:34:20,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2018-10-14 16:34:20,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 225. [2018-10-14 16:34:20,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-10-14 16:34:20,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 227 transitions. [2018-10-14 16:34:20,511 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 227 transitions. Word has length 149 [2018-10-14 16:34:20,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:20,511 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 227 transitions. [2018-10-14 16:34:20,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:34:20,512 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 227 transitions. [2018-10-14 16:34:20,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-14 16:34:20,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:20,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:20,518 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:20,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:20,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1449466776, now seen corresponding path program 1 times [2018-10-14 16:34:20,522 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:21,936 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-10-14 16:34:22,500 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-10-14 16:34:23,706 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:23,707 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:23,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2018-10-14 16:34:23,707 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-10-14 16:34:23,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-10-14 16:34:23,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1511, Unknown=0, NotChecked=0, Total=1640 [2018-10-14 16:34:23,709 INFO L87 Difference]: Start difference. First operand 225 states and 227 transitions. Second operand 41 states. [2018-10-14 16:34:25,511 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2018-10-14 16:34:25,683 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2018-10-14 16:34:25,997 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-14 16:34:26,206 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2018-10-14 16:34:30,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:30,890 INFO L93 Difference]: Finished difference Result 402 states and 405 transitions. [2018-10-14 16:34:30,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2018-10-14 16:34:30,891 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 149 [2018-10-14 16:34:30,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:30,894 INFO L225 Difference]: With dead ends: 402 [2018-10-14 16:34:30,894 INFO L226 Difference]: Without dead ends: 402 [2018-10-14 16:34:30,897 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1673 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1059, Invalid=7497, Unknown=0, NotChecked=0, Total=8556 [2018-10-14 16:34:30,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2018-10-14 16:34:30,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 288. [2018-10-14 16:34:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2018-10-14 16:34:30,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 291 transitions. [2018-10-14 16:34:30,906 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 291 transitions. Word has length 149 [2018-10-14 16:34:30,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:30,906 INFO L481 AbstractCegarLoop]: Abstraction has 288 states and 291 transitions. [2018-10-14 16:34:30,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-10-14 16:34:30,906 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 291 transitions. [2018-10-14 16:34:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-14 16:34:30,908 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:30,909 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:30,909 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:30,909 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:30,909 INFO L82 PathProgramCache]: Analyzing trace with hash 961014568, now seen corresponding path program 1 times [2018-10-14 16:34:30,910 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-14 16:34:31,108 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:31,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-14 16:34:31,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-14 16:34:31,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-14 16:34:31,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-14 16:34:31,109 INFO L87 Difference]: Start difference. First operand 288 states and 291 transitions. Second operand 11 states. [2018-10-14 16:34:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:31,922 INFO L93 Difference]: Finished difference Result 299 states and 301 transitions. [2018-10-14 16:34:31,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-14 16:34:31,923 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 181 [2018-10-14 16:34:31,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:31,924 INFO L225 Difference]: With dead ends: 299 [2018-10-14 16:34:31,924 INFO L226 Difference]: Without dead ends: 236 [2018-10-14 16:34:31,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2018-10-14 16:34:31,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2018-10-14 16:34:31,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2018-10-14 16:34:31,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2018-10-14 16:34:31,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 237 transitions. [2018-10-14 16:34:31,931 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 237 transitions. Word has length 181 [2018-10-14 16:34:31,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:31,931 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 237 transitions. [2018-10-14 16:34:31,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-14 16:34:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 237 transitions. [2018-10-14 16:34:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-14 16:34:31,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:31,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:31,934 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:31,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:31,935 INFO L82 PathProgramCache]: Analyzing trace with hash -177106492, now seen corresponding path program 2 times [2018-10-14 16:34:31,935 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:33,663 WARN L179 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2018-10-14 16:34:33,959 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2018-10-14 16:34:34,424 WARN L179 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2018-10-14 16:34:34,643 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 36 [2018-10-14 16:34:35,096 WARN L179 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2018-10-14 16:34:35,427 WARN L179 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2018-10-14 16:34:35,572 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2018-10-14 16:34:35,970 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2018-10-14 16:34:36,158 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 39 [2018-10-14 16:34:36,451 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2018-10-14 16:34:37,582 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2018-10-14 16:34:37,772 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-14 16:34:37,947 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2018-10-14 16:34:40,641 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:40,641 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:40,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2018-10-14 16:34:40,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2018-10-14 16:34:40,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2018-10-14 16:34:40,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=3924, Unknown=0, NotChecked=0, Total=4160 [2018-10-14 16:34:40,644 INFO L87 Difference]: Start difference. First operand 236 states and 237 transitions. Second operand 65 states. [2018-10-14 16:34:42,189 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2018-10-14 16:34:43,098 WARN L179 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2018-10-14 16:34:43,945 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 57 [2018-10-14 16:34:44,190 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 60 [2018-10-14 16:34:44,440 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 63 [2018-10-14 16:34:44,813 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 72 [2018-10-14 16:34:45,106 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 71 [2018-10-14 16:34:45,511 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 76 [2018-10-14 16:34:45,814 WARN L179 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 82 [2018-10-14 16:34:46,276 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 85 [2018-10-14 16:34:46,605 WARN L179 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 88 [2018-10-14 16:34:47,335 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 58 [2018-10-14 16:34:47,733 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 61 [2018-10-14 16:34:48,082 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 47 [2018-10-14 16:34:48,381 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 51 [2018-10-14 16:34:48,811 WARN L179 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 54 [2018-10-14 16:34:49,728 WARN L179 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 63 [2018-10-14 16:34:50,216 WARN L179 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 56 [2018-10-14 16:34:50,805 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 53 [2018-10-14 16:34:51,013 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 55 [2018-10-14 16:34:51,368 WARN L179 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 64 [2018-10-14 16:34:51,704 WARN L179 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 69 [2018-10-14 16:34:52,113 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 74 [2018-10-14 16:34:52,895 WARN L179 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 86 [2018-10-14 16:34:53,425 WARN L179 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 91 [2018-10-14 16:34:53,897 WARN L179 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 97 [2018-10-14 16:34:54,447 WARN L179 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 100 [2018-10-14 16:34:54,960 WARN L179 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 103 [2018-10-14 16:34:55,280 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 69 [2018-10-14 16:34:56,389 WARN L179 SmtUtils]: Spent 869.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 66 [2018-10-14 16:34:56,735 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 70 [2018-10-14 16:34:57,118 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 82 [2018-10-14 16:34:57,590 WARN L179 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 85 [2018-10-14 16:34:58,034 WARN L179 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 91 [2018-10-14 16:34:58,325 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2018-10-14 16:34:58,670 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2018-10-14 16:34:59,056 WARN L179 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 89 [2018-10-14 16:34:59,394 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2018-10-14 16:35:00,030 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2018-10-14 16:35:00,221 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2018-10-14 16:35:00,434 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 70 [2018-10-14 16:35:00,762 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 90 [2018-10-14 16:35:01,024 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2018-10-14 16:35:01,340 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2018-10-14 16:35:01,615 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2018-10-14 16:35:01,976 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 87 [2018-10-14 16:35:02,268 WARN L179 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2018-10-14 16:35:05,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:35:05,636 INFO L93 Difference]: Finished difference Result 370 states and 372 transitions. [2018-10-14 16:35:05,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-10-14 16:35:05,637 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 192 [2018-10-14 16:35:05,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:35:05,640 INFO L225 Difference]: With dead ends: 370 [2018-10-14 16:35:05,640 INFO L226 Difference]: Without dead ends: 339 [2018-10-14 16:35:05,646 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 3 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5473 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=2737, Invalid=19315, Unknown=0, NotChecked=0, Total=22052 [2018-10-14 16:35:05,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2018-10-14 16:35:05,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 279. [2018-10-14 16:35:05,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2018-10-14 16:35:05,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 280 transitions. [2018-10-14 16:35:05,653 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 280 transitions. Word has length 192 [2018-10-14 16:35:05,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:35:05,653 INFO L481 AbstractCegarLoop]: Abstraction has 279 states and 280 transitions. [2018-10-14 16:35:05,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2018-10-14 16:35:05,654 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 280 transitions. [2018-10-14 16:35:05,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-14 16:35:05,656 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:35:05,657 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:35:05,657 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:35:05,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:35:05,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1606196536, now seen corresponding path program 3 times [2018-10-14 16:35:05,658 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:35:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:35:16,361 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 230 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:35:16,362 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:35:16,362 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [94] total 94 [2018-10-14 16:35:16,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2018-10-14 16:35:16,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2018-10-14 16:35:16,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=8368, Unknown=0, NotChecked=0, Total=8742 [2018-10-14 16:35:16,365 INFO L87 Difference]: Start difference. First operand 279 states and 280 transitions. Second operand 94 states. [2018-10-14 16:35:18,757 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2018-10-14 16:35:18,955 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2018-10-14 16:35:20,141 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2018-10-14 16:35:20,520 WARN L179 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 58 [2018-10-14 16:35:20,956 WARN L179 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 65 [2018-10-14 16:35:21,628 WARN L179 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 83 [2018-10-14 16:35:22,061 WARN L179 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 80 [2018-10-14 16:35:22,723 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 94 [2018-10-14 16:35:23,335 WARN L179 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 114 [2018-10-14 16:35:23,927 WARN L179 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 113 [2018-10-14 16:35:24,572 WARN L179 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 120 [2018-10-14 16:35:25,173 WARN L179 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 127 [2018-10-14 16:35:25,467 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2018-10-14 16:35:25,669 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 66 [2018-10-14 16:35:25,971 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2018-10-14 16:35:26,261 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2018-10-14 16:35:26,576 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2018-10-14 16:35:27,661 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2018-10-14 16:35:29,050 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 56 [2018-10-14 16:35:29,375 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 65 [2018-10-14 16:35:29,743 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2018-10-14 16:35:30,298 WARN L179 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 91 [2018-10-14 16:35:30,780 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 93 [2018-10-14 16:35:31,494 WARN L179 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 106 [2018-10-14 16:35:32,138 WARN L179 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 126 [2018-10-14 16:35:32,889 WARN L179 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 125 [2018-10-14 16:35:33,755 WARN L179 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 132 [2018-10-14 16:35:34,545 WARN L179 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 139 [2018-10-14 16:35:34,878 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 82 [2018-10-14 16:35:35,121 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2018-10-14 16:35:35,570 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2018-10-14 16:35:35,908 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2018-10-14 16:35:36,412 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2018-10-14 16:35:37,492 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2018-10-14 16:35:37,780 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2018-10-14 16:35:38,169 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2018-10-14 16:35:38,745 WARN L179 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 87 [2018-10-14 16:35:39,218 WARN L179 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 90 [2018-10-14 16:35:39,829 WARN L179 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2018-10-14 16:35:40,569 WARN L179 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 121 [2018-10-14 16:35:41,299 WARN L179 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 119 [2018-10-14 16:35:42,125 WARN L179 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 127 [2018-10-14 16:35:42,982 WARN L179 SmtUtils]: Spent 659.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 134 [2018-10-14 16:35:43,307 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2018-10-14 16:35:43,647 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2018-10-14 16:35:44,096 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2018-10-14 16:35:44,385 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-14 16:35:44,723 WARN L179 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 77 [2018-10-14 16:35:45,141 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2018-10-14 16:35:45,394 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2018-10-14 16:35:45,609 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 55 [2018-10-14 16:35:46,380 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2018-10-14 16:35:46,611 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2018-10-14 16:35:46,914 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2018-10-14 16:35:47,242 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2018-10-14 16:35:47,648 WARN L179 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2018-10-14 16:35:48,044 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 96 [2018-10-14 16:35:48,479 WARN L179 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 90 [2018-10-14 16:35:48,957 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2018-10-14 16:35:49,364 WARN L179 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2018-10-14 16:35:53,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:35:53,180 INFO L93 Difference]: Finished difference Result 413 states and 415 transitions. [2018-10-14 16:35:53,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-10-14 16:35:53,180 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 235 [2018-10-14 16:35:53,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:35:53,184 INFO L225 Difference]: With dead ends: 413 [2018-10-14 16:35:53,184 INFO L226 Difference]: Without dead ends: 382 [2018-10-14 16:35:53,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 4 SyntacticMatches, 8 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8850 ImplicationChecksByTransitivity, 37.8s TimeCoverageRelationStatistics Valid=4346, Invalid=34660, Unknown=0, NotChecked=0, Total=39006 [2018-10-14 16:35:53,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-14 16:35:53,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 322. [2018-10-14 16:35:53,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 322 states. [2018-10-14 16:35:53,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 323 transitions. [2018-10-14 16:35:53,199 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 323 transitions. Word has length 235 [2018-10-14 16:35:53,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:35:53,199 INFO L481 AbstractCegarLoop]: Abstraction has 322 states and 323 transitions. [2018-10-14 16:35:53,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 94 states. [2018-10-14 16:35:53,200 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 323 transitions. [2018-10-14 16:35:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-10-14 16:35:53,203 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:35:53,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:35:53,204 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:35:53,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:35:53,204 INFO L82 PathProgramCache]: Analyzing trace with hash 278219812, now seen corresponding path program 4 times [2018-10-14 16:35:53,205 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:35:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:35:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 333 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2018-10-14 16:35:57,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:35:57,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2018-10-14 16:35:57,147 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2018-10-14 16:35:57,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2018-10-14 16:35:57,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=4709, Unknown=0, NotChecked=0, Total=4970 [2018-10-14 16:35:57,148 INFO L87 Difference]: Start difference. First operand 322 states and 323 transitions. Second operand 71 states. [2018-10-14 16:35:59,618 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 41 [2018-10-14 16:35:59,926 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 53 [2018-10-14 16:36:00,312 WARN L179 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 62 [2018-10-14 16:36:00,606 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 71 [2018-10-14 16:36:01,012 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 76 [2018-10-14 16:36:01,364 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 81 [2018-10-14 16:36:01,676 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2018-10-14 16:36:01,931 WARN L179 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2018-10-14 16:36:02,300 WARN L179 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2018-10-14 16:36:02,610 WARN L179 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 93 [2018-10-14 16:36:02,938 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 98 [2018-10-14 16:36:04,942 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2018-10-14 16:36:05,366 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2018-10-14 16:36:05,660 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 80 [2018-10-14 16:36:06,102 WARN L179 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2018-10-14 16:36:06,441 WARN L179 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2018-10-14 16:36:06,734 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2018-10-14 16:36:06,949 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2018-10-14 16:36:07,282 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-14 16:36:07,912 WARN L179 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 105 [2018-10-14 16:36:08,296 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 107 [2018-10-14 16:36:08,598 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 99 [2018-10-14 16:36:08,993 WARN L179 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 97 [2018-10-14 16:36:09,479 WARN L179 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 99 [2018-10-14 16:36:11,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:36:11,693 INFO L93 Difference]: Finished difference Result 308 states and 309 transitions. [2018-10-14 16:36:11,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2018-10-14 16:36:11,693 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 278 [2018-10-14 16:36:11,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:36:11,694 INFO L225 Difference]: With dead ends: 308 [2018-10-14 16:36:11,694 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:36:11,696 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4486 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=2397, Invalid=17343, Unknown=0, NotChecked=0, Total=19740 [2018-10-14 16:36:11,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:36:11,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:36:11,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:36:11,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:36:11,698 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 278 [2018-10-14 16:36:11,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:36:11,698 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:36:11,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2018-10-14 16:36:11,698 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:36:11,698 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:36:11,703 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:36:11 BoogieIcfgContainer [2018-10-14 16:36:11,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:36:11,705 INFO L168 Benchmark]: Toolchain (without parser) took 122279.12 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 443.5 MB). Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 65.5 MB). Peak memory consumption was 509.0 MB. Max. memory is 7.1 GB. [2018-10-14 16:36:11,706 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:36:11,706 INFO L168 Benchmark]: Boogie Preprocessor took 84.03 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-14 16:36:11,706 INFO L168 Benchmark]: RCFGBuilder took 1210.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-14 16:36:11,707 INFO L168 Benchmark]: TraceAbstraction took 120980.17 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 443.5 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 23.2 MB). Peak memory consumption was 466.7 MB. Max. memory is 7.1 GB. [2018-10-14 16:36:11,709 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 0.22 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 84.03 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 1210.01 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 120980.17 ms. Allocated memory was 1.5 GB in the beginning and 2.0 GB in the end (delta: 443.5 MB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 23.2 MB). Peak memory consumption was 466.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 242]: 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, 139 locations, 1 error locations. SAFE Result, 120.9s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 91.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 960 SDtfs, 12802 SDslu, 13581 SDs, 0 SdLazy, 23458 SolverSat, 1068 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 744 GetRequests, 48 SyntacticMatches, 20 SemanticMatches, 676 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21260 ImplicationChecksByTransitivity, 89.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=322occurred in iteration=8, 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, 9 MinimizatonAttempts, 434 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 27.1s InterpolantComputationTime, 1459 NumberOfCodeBlocks, 1459 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1450 ConstructedInterpolants, 0 QuantifiedInterpolants, 4764531 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 140/869 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_43.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-36-11-719.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_43.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-36-11-719.csv Received shutdown request...