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_38.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-093a8c0 [2018-10-14 16:33:47,624 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-14 16:33:47,626 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-14 16:33:47,642 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-14 16:33:47,642 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-14 16:33:47,644 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-14 16:33:47,645 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-14 16:33:47,648 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-14 16:33:47,651 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-14 16:33:47,652 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-14 16:33:47,653 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-10-14 16:33:47,694 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 16:33:47,711 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-14 16:33:47,711 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-14 16:33:47,712 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-14 16:33:47,712 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-14 16:33:47,713 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-14 16:33:47,713 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-14 16:33:47,714 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-14 16:33:47,715 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-14 16:33:47,715 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-14 16:33:47,715 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-14 16:33:47,715 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-14 16:33:47,715 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-14 16:33:47,716 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-14 16:33:47,718 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-14 16:33:47,718 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-14 16:33:47,782 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-14 16:33:47,797 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-14 16:33:47,802 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-14 16:33:47,804 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-14 16:33:47,805 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-14 16:33:47,805 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl [2018-10-14 16:33:47,806 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl' [2018-10-14 16:33:47,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-14 16:33:47,900 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-14 16:33:47,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-14 16:33:47,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-14 16:33:47,901 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-14 16:33:47,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,955 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/1) ... [2018-10-14 16:33:47,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-14 16:33:47,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-14 16:33:47,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-14 16:33:47,997 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-14 16:33:47,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (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 16:33:48,071 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-14 16:33:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-14 16:33:48,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-14 16:33:48,933 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-14 16:33:48,934 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:48 BoogieIcfgContainer [2018-10-14 16:33:48,934 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-14 16:33:48,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-14 16:33:48,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-14 16:33:48,938 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-14 16:33:48,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.10 04:33:47" (1/2) ... [2018-10-14 16:33:48,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62fa01e5 and model type alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:33:48, skipping insertion in model container [2018-10-14 16:33:48,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:33:48" (2/2) ... [2018-10-14 16:33:48,942 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl [2018-10-14 16:33:48,951 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-14 16:33:48,960 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-14 16:33:48,977 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-14 16:33:49,006 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-14 16:33:49,007 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-14 16:33:49,007 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-14 16:33:49,007 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-14 16:33:49,007 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-14 16:33:49,007 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-14 16:33:49,008 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-14 16:33:49,008 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-14 16:33:49,008 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-14 16:33:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2018-10-14 16:33:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-10-14 16:33:49,040 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:49,041 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] [2018-10-14 16:33:49,042 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:49,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:49,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1179044582, now seen corresponding path program 1 times [2018-10-14 16:33:49,109 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:49,472 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 16:33:49,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:49,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-14 16:33:49,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-14 16:33:49,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-14 16:33:49,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-10-14 16:33:49,501 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 7 states. [2018-10-14 16:33:50,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:50,765 INFO L93 Difference]: Finished difference Result 220 states and 224 transitions. [2018-10-14 16:33:50,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-14 16:33:50,767 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2018-10-14 16:33:50,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:50,801 INFO L225 Difference]: With dead ends: 220 [2018-10-14 16:33:50,802 INFO L226 Difference]: Without dead ends: 220 [2018-10-14 16:33:50,805 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-10-14 16:33:50,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2018-10-14 16:33:50,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 132. [2018-10-14 16:33:50,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2018-10-14 16:33:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 135 transitions. [2018-10-14 16:33:50,881 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 135 transitions. Word has length 36 [2018-10-14 16:33:50,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:50,882 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 135 transitions. [2018-10-14 16:33:50,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-14 16:33:50,883 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 135 transitions. [2018-10-14 16:33:50,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-14 16:33:50,888 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:50,888 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] [2018-10-14 16:33:50,889 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:50,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:50,890 INFO L82 PathProgramCache]: Analyzing trace with hash -188082643, now seen corresponding path program 1 times [2018-10-14 16:33:50,891 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:51,237 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 16:33:51,238 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:51,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-14 16:33:51,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-14 16:33:51,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-14 16:33:51,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-14 16:33:51,241 INFO L87 Difference]: Start difference. First operand 132 states and 135 transitions. Second operand 9 states. [2018-10-14 16:33:52,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:52,149 INFO L93 Difference]: Finished difference Result 289 states and 294 transitions. [2018-10-14 16:33:52,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-14 16:33:52,150 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2018-10-14 16:33:52,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:52,153 INFO L225 Difference]: With dead ends: 289 [2018-10-14 16:33:52,154 INFO L226 Difference]: Without dead ends: 257 [2018-10-14 16:33:52,155 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 [2018-10-14 16:33:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2018-10-14 16:33:52,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 119. [2018-10-14 16:33:52,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2018-10-14 16:33:52,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 121 transitions. [2018-10-14 16:33:52,167 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 121 transitions. Word has length 68 [2018-10-14 16:33:52,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:52,167 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 121 transitions. [2018-10-14 16:33:52,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-14 16:33:52,167 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 121 transitions. [2018-10-14 16:33:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-14 16:33:52,170 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:52,170 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] [2018-10-14 16:33:52,171 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:52,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:52,171 INFO L82 PathProgramCache]: Analyzing trace with hash -708069330, now seen corresponding path program 1 times [2018-10-14 16:33:52,172 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:52,244 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 16:33:52,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:52,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:33:52,245 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:33:52,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:33:52,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:33:52,246 INFO L87 Difference]: Start difference. First operand 119 states and 121 transitions. Second operand 3 states. [2018-10-14 16:33:52,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:52,318 INFO L93 Difference]: Finished difference Result 187 states and 190 transitions. [2018-10-14 16:33:52,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:33:52,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2018-10-14 16:33:52,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:52,320 INFO L225 Difference]: With dead ends: 187 [2018-10-14 16:33:52,320 INFO L226 Difference]: Without dead ends: 187 [2018-10-14 16:33:52,320 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 16:33:52,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-10-14 16:33:52,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 153. [2018-10-14 16:33:52,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-10-14 16:33:52,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 156 transitions. [2018-10-14 16:33:52,332 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 156 transitions. Word has length 79 [2018-10-14 16:33:52,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:52,333 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 156 transitions. [2018-10-14 16:33:52,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:33:52,333 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 156 transitions. [2018-10-14 16:33:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-10-14 16:33:52,336 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:52,336 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] [2018-10-14 16:33:52,336 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:52,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:52,337 INFO L82 PathProgramCache]: Analyzing trace with hash 212937038, now seen corresponding path program 1 times [2018-10-14 16:33:52,338 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:52,502 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 16:33:52,503 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:52,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2018-10-14 16:33:52,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-14 16:33:52,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-14 16:33:52,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-10-14 16:33:52,504 INFO L87 Difference]: Start difference. First operand 153 states and 156 transitions. Second operand 8 states. [2018-10-14 16:33:53,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:53,129 INFO L93 Difference]: Finished difference Result 353 states and 358 transitions. [2018-10-14 16:33:53,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-14 16:33:53,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 79 [2018-10-14 16:33:53,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:53,134 INFO L225 Difference]: With dead ends: 353 [2018-10-14 16:33:53,134 INFO L226 Difference]: Without dead ends: 353 [2018-10-14 16:33:53,135 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-10-14 16:33:53,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2018-10-14 16:33:53,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 209. [2018-10-14 16:33:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-10-14 16:33:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 213 transitions. [2018-10-14 16:33:53,152 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 213 transitions. Word has length 79 [2018-10-14 16:33:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:53,153 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 213 transitions. [2018-10-14 16:33:53,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-14 16:33:53,153 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 213 transitions. [2018-10-14 16:33:53,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-14 16:33:53,158 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:53,158 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:33:53,159 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:53,159 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:53,159 INFO L82 PathProgramCache]: Analyzing trace with hash -624674207, now seen corresponding path program 1 times [2018-10-14 16:33:53,160 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:53,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:33:53,873 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:53,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2018-10-14 16:33:53,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-14 16:33:53,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-14 16:33:53,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-10-14 16:33:53,875 INFO L87 Difference]: Start difference. First operand 209 states and 213 transitions. Second operand 20 states. [2018-10-14 16:33:55,462 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2018-10-14 16:33:57,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:57,392 INFO L93 Difference]: Finished difference Result 430 states and 435 transitions. [2018-10-14 16:33:57,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-10-14 16:33:57,392 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 111 [2018-10-14 16:33:57,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:57,395 INFO L225 Difference]: With dead ends: 430 [2018-10-14 16:33:57,395 INFO L226 Difference]: Without dead ends: 430 [2018-10-14 16:33:57,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=656, Invalid=2424, Unknown=0, NotChecked=0, Total=3080 [2018-10-14 16:33:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2018-10-14 16:33:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 241. [2018-10-14 16:33:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-14 16:33:57,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 245 transitions. [2018-10-14 16:33:57,408 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 245 transitions. Word has length 111 [2018-10-14 16:33:57,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:57,409 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 245 transitions. [2018-10-14 16:33:57,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-14 16:33:57,409 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 245 transitions. [2018-10-14 16:33:57,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-14 16:33:57,412 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:57,412 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] [2018-10-14 16:33:57,412 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:57,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:57,413 INFO L82 PathProgramCache]: Analyzing trace with hash -622285958, now seen corresponding path program 1 times [2018-10-14 16:33:57,414 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:58,278 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-10-14 16:33:58,279 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:33:58,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2018-10-14 16:33:58,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-14 16:33:58,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-14 16:33:58,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-10-14 16:33:58,280 INFO L87 Difference]: Start difference. First operand 241 states and 245 transitions. Second operand 10 states. [2018-10-14 16:33:58,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:58,841 INFO L93 Difference]: Finished difference Result 354 states and 359 transitions. [2018-10-14 16:33:58,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-14 16:33:58,843 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 122 [2018-10-14 16:33:58,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:58,846 INFO L225 Difference]: With dead ends: 354 [2018-10-14 16:33:58,847 INFO L226 Difference]: Without dead ends: 354 [2018-10-14 16:33:58,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2018-10-14 16:33:58,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2018-10-14 16:33:58,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 241. [2018-10-14 16:33:58,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-14 16:33:58,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 245 transitions. [2018-10-14 16:33:58,857 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 245 transitions. Word has length 122 [2018-10-14 16:33:58,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:58,857 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 245 transitions. [2018-10-14 16:33:58,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-14 16:33:58,858 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 245 transitions. [2018-10-14 16:33:58,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-14 16:33:58,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:58,861 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] [2018-10-14 16:33:58,862 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:58,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:58,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1196834676, now seen corresponding path program 2 times [2018-10-14 16:33:58,863 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:33:58,973 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-14 16:33:58,973 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-14 16:33:58,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-14 16:33:58,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-14 16:33:58,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-14 16:33:58,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-14 16:33:58,975 INFO L87 Difference]: Start difference. First operand 241 states and 245 transitions. Second operand 3 states. [2018-10-14 16:33:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:33:59,003 INFO L93 Difference]: Finished difference Result 263 states and 265 transitions. [2018-10-14 16:33:59,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-14 16:33:59,005 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2018-10-14 16:33:59,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:33:59,007 INFO L225 Difference]: With dead ends: 263 [2018-10-14 16:33:59,007 INFO L226 Difference]: Without dead ends: 209 [2018-10-14 16:33:59,008 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 16:33:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2018-10-14 16:33:59,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 198. [2018-10-14 16:33:59,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-10-14 16:33:59,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 199 transitions. [2018-10-14 16:33:59,013 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 199 transitions. Word has length 143 [2018-10-14 16:33:59,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:33:59,013 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 199 transitions. [2018-10-14 16:33:59,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-14 16:33:59,013 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 199 transitions. [2018-10-14 16:33:59,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-14 16:33:59,015 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:33:59,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:33:59,016 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:33:59,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:33:59,017 INFO L82 PathProgramCache]: Analyzing trace with hash 998771853, now seen corresponding path program 1 times [2018-10-14 16:33:59,017 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:33:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:00,105 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:00,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:00,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2018-10-14 16:34:00,107 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-10-14 16:34:00,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-10-14 16:34:00,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=698, Unknown=0, NotChecked=0, Total=756 [2018-10-14 16:34:00,108 INFO L87 Difference]: Start difference. First operand 198 states and 199 transitions. Second operand 28 states. [2018-10-14 16:34:04,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:04,219 INFO L93 Difference]: Finished difference Result 310 states and 311 transitions. [2018-10-14 16:34:04,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2018-10-14 16:34:04,221 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 154 [2018-10-14 16:34:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:04,223 INFO L225 Difference]: With dead ends: 310 [2018-10-14 16:34:04,223 INFO L226 Difference]: Without dead ends: 265 [2018-10-14 16:34:04,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=573, Invalid=3983, Unknown=0, NotChecked=0, Total=4556 [2018-10-14 16:34:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2018-10-14 16:34:04,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 241. [2018-10-14 16:34:04,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-10-14 16:34:04,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-10-14 16:34:04,230 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 154 [2018-10-14 16:34:04,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:04,231 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-10-14 16:34:04,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-10-14 16:34:04,231 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-10-14 16:34:04,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-14 16:34:04,233 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:04,234 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:04,234 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:04,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:04,235 INFO L82 PathProgramCache]: Analyzing trace with hash -439351295, now seen corresponding path program 2 times [2018-10-14 16:34:04,235 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:05,470 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-14 16:34:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:07,909 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:07,909 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2018-10-14 16:34:07,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-10-14 16:34:07,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-10-14 16:34:07,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=2320, Unknown=0, NotChecked=0, Total=2450 [2018-10-14 16:34:07,912 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 50 states. [2018-10-14 16:34:10,343 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 56 [2018-10-14 16:34:10,552 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2018-10-14 16:34:10,882 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 66 [2018-10-14 16:34:11,161 WARN L179 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 70 [2018-10-14 16:34:11,515 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2018-10-14 16:34:11,901 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2018-10-14 16:34:12,427 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2018-10-14 16:34:13,547 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 57 [2018-10-14 16:34:14,035 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2018-10-14 16:34:14,222 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 64 [2018-10-14 16:34:14,530 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2018-10-14 16:34:14,762 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2018-10-14 16:34:14,939 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-14 16:34:15,284 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-14 16:34:15,611 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-10-14 16:34:18,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:18,452 INFO L93 Difference]: Finished difference Result 344 states and 345 transitions. [2018-10-14 16:34:18,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-10-14 16:34:18,453 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 197 [2018-10-14 16:34:18,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:18,455 INFO L225 Difference]: With dead ends: 344 [2018-10-14 16:34:18,455 INFO L226 Difference]: Without dead ends: 299 [2018-10-14 16:34:18,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2844 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=1026, Invalid=10746, Unknown=0, NotChecked=0, Total=11772 [2018-10-14 16:34:18,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2018-10-14 16:34:18,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 284. [2018-10-14 16:34:18,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2018-10-14 16:34:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 285 transitions. [2018-10-14 16:34:18,466 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 285 transitions. Word has length 197 [2018-10-14 16:34:18,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:18,467 INFO L481 AbstractCegarLoop]: Abstraction has 284 states and 285 transitions. [2018-10-14 16:34:18,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-10-14 16:34:18,467 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 285 transitions. [2018-10-14 16:34:18,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-10-14 16:34:18,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:18,470 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:18,470 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:18,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:18,470 INFO L82 PathProgramCache]: Analyzing trace with hash -71304467, now seen corresponding path program 3 times [2018-10-14 16:34:18,471 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:20,146 WARN L179 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2018-10-14 16:34:22,888 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2018-10-14 16:34:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-14 16:34:23,532 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:23,533 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2018-10-14 16:34:23,533 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-10-14 16:34:23,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-10-14 16:34:23,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3612, Unknown=0, NotChecked=0, Total=3782 [2018-10-14 16:34:23,534 INFO L87 Difference]: Start difference. First operand 284 states and 285 transitions. Second operand 62 states. [2018-10-14 16:34:26,175 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 48 [2018-10-14 16:34:26,635 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 57 [2018-10-14 16:34:27,003 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 61 [2018-10-14 16:34:27,420 WARN L179 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 67 [2018-10-14 16:34:27,723 WARN L179 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 71 [2018-10-14 16:34:28,031 WARN L179 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2018-10-14 16:34:28,263 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 70 [2018-10-14 16:34:29,078 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2018-10-14 16:34:30,446 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-10-14 16:34:30,680 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2018-10-14 16:34:30,955 WARN L179 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2018-10-14 16:34:31,254 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-10-14 16:34:31,562 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 68 [2018-10-14 16:34:31,941 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2018-10-14 16:34:32,224 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2018-10-14 16:34:32,510 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 72 [2018-10-14 16:34:32,952 WARN L179 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 77 [2018-10-14 16:34:33,290 WARN L179 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 82 [2018-10-14 16:34:33,501 WARN L179 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 60 [2018-10-14 16:34:33,905 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 57 [2018-10-14 16:34:34,272 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2018-10-14 16:34:34,511 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2018-10-14 16:34:34,680 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 58 [2018-10-14 16:34:35,775 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2018-10-14 16:34:35,963 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2018-10-14 16:34:36,806 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2018-10-14 16:34:39,996 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2018-10-14 16:34:40,180 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-14 16:34:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:34:40,554 INFO L93 Difference]: Finished difference Result 387 states and 388 transitions. [2018-10-14 16:34:40,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-14 16:34:40,555 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 240 [2018-10-14 16:34:40,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:34:40,558 INFO L225 Difference]: With dead ends: 387 [2018-10-14 16:34:40,558 INFO L226 Difference]: Without dead ends: 342 [2018-10-14 16:34:40,563 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4570 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=1761, Invalid=17979, Unknown=0, NotChecked=0, Total=19740 [2018-10-14 16:34:40,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2018-10-14 16:34:40,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 327. [2018-10-14 16:34:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2018-10-14 16:34:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 328 transitions. [2018-10-14 16:34:40,570 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 328 transitions. Word has length 240 [2018-10-14 16:34:40,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:34:40,571 INFO L481 AbstractCegarLoop]: Abstraction has 327 states and 328 transitions. [2018-10-14 16:34:40,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-10-14 16:34:40,571 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 328 transitions. [2018-10-14 16:34:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-10-14 16:34:40,574 INFO L367 BasicCegarLoop]: Found error trace [2018-10-14 16:34:40,575 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-14 16:34:40,575 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-14 16:34:40,575 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-14 16:34:40,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1411981919, now seen corresponding path program 4 times [2018-10-14 16:34:40,576 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-14 16:34:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-14 16:34:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 383 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-14 16:34:45,767 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-14 16:34:45,767 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2018-10-14 16:34:45,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2018-10-14 16:34:45,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2018-10-14 16:34:45,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=5026, Unknown=0, NotChecked=0, Total=5256 [2018-10-14 16:34:45,770 INFO L87 Difference]: Start difference. First operand 327 states and 328 transitions. Second operand 73 states. [2018-10-14 16:34:48,718 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 47 [2018-10-14 16:34:49,092 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 56 [2018-10-14 16:34:49,390 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 60 [2018-10-14 16:34:49,787 WARN L179 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 66 [2018-10-14 16:34:50,132 WARN L179 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 70 [2018-10-14 16:34:50,524 WARN L179 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 96 [2018-10-14 16:34:50,857 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 92 [2018-10-14 16:34:51,246 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 99 [2018-10-14 16:34:51,711 WARN L179 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 101 [2018-10-14 16:34:53,228 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2018-10-14 16:34:53,452 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2018-10-14 16:34:53,730 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2018-10-14 16:34:54,039 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2018-10-14 16:34:54,312 WARN L179 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2018-10-14 16:34:54,570 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-10-14 16:34:54,832 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2018-10-14 16:34:55,120 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2018-10-14 16:34:55,585 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2018-10-14 16:34:55,930 WARN L179 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2018-10-14 16:34:56,187 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 64 [2018-10-14 16:34:56,354 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2018-10-14 16:34:56,554 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2018-10-14 16:34:56,779 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2018-10-14 16:34:57,369 WARN L179 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 102 [2018-10-14 16:34:57,871 WARN L179 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 107 [2018-10-14 16:34:58,249 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 100 [2018-10-14 16:35:00,337 WARN L179 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 103 [2018-10-14 16:35:01,681 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 109 [2018-10-14 16:35:02,041 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2018-10-14 16:35:03,124 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 106 [2018-10-14 16:35:03,513 WARN L179 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 103 [2018-10-14 16:35:04,032 WARN L179 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 109 [2018-10-14 16:35:04,464 WARN L179 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 101 [2018-10-14 16:35:04,848 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 110 [2018-10-14 16:35:05,271 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 113 [2018-10-14 16:35:05,481 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2018-10-14 16:35:05,650 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2018-10-14 16:35:05,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-14 16:35:05,688 INFO L93 Difference]: Finished difference Result 325 states and 326 transitions. [2018-10-14 16:35:05,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2018-10-14 16:35:05,689 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 283 [2018-10-14 16:35:05,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-14 16:35:05,690 INFO L225 Difference]: With dead ends: 325 [2018-10-14 16:35:05,690 INFO L226 Difference]: Without dead ends: 0 [2018-10-14 16:35:05,695 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4717 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=2063, Invalid=19399, Unknown=0, NotChecked=0, Total=21462 [2018-10-14 16:35:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-14 16:35:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-14 16:35:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-14 16:35:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-14 16:35:05,695 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 283 [2018-10-14 16:35:05,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-14 16:35:05,696 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-14 16:35:05,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2018-10-14 16:35:05,696 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-14 16:35:05,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-14 16:35:05,700 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:35:05 BoogieIcfgContainer [2018-10-14 16:35:05,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-14 16:35:05,701 INFO L168 Benchmark]: Toolchain (without parser) took 77802.13 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 607.1 MB). Free memory was 1.5 GB in the beginning and 1.3 GB in the end (delta: 195.5 MB). Peak memory consumption was 802.6 MB. Max. memory is 7.1 GB. [2018-10-14 16:35:05,702 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.19 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 16:35:05,703 INFO L168 Benchmark]: Boogie Preprocessor took 92.25 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 16:35:05,703 INFO L168 Benchmark]: RCFGBuilder took 940.55 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-14 16:35:05,704 INFO L168 Benchmark]: TraceAbstraction took 76765.48 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 607.1 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 163.8 MB). Peak memory consumption was 770.9 MB. Max. memory is 7.1 GB. [2018-10-14 16:35:05,707 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 0.19 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 92.25 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 940.55 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: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 76765.48 ms. Allocated memory was 1.5 GB in the beginning and 2.1 GB in the end (delta: 607.1 MB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 163.8 MB). Peak memory consumption was 770.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 219]: 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, 119 locations, 1 error locations. SAFE Result, 76.7s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 58.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1199 SDtfs, 12278 SDslu, 11935 SDs, 0 SdLazy, 17351 SolverSat, 684 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 615 GetRequests, 40 SyntacticMatches, 8 SemanticMatches, 567 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13727 ImplicationChecksByTransitivity, 52.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=327occurred in iteration=10, 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, 11 MinimizatonAttempts, 771 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 1512 NumberOfCodeBlocks, 1512 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1501 ConstructedInterpolants, 0 QuantifiedInterpolants, 4376652 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 59/865 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_38.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-14_16-35-05-717.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_38.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-14_16-35-05-717.csv Received shutdown request...