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_48.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.23-b8f97f7-m [2018-10-10 15:27:24,606 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 15:27:24,608 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 15:27:24,620 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2018-10-10 15:27:24,673 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/heapseparator/heapsep-2018-09-18.epf [2018-10-10 15:27:24,683 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 15:27:24,683 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 15:27:24,684 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-10 15:27:24,684 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-10-10 15:27:24,685 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-10-10 15:27:24,685 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-10 15:27:24,685 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 15:27:24,686 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-10-10 15:27:24,686 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 15:27:24,686 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-10-10 15:27:24,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-10 15:27:24,686 INFO L133 SettingsManager]: * Order in Petri net unfolding=Ken McMillan [2018-10-10 15:27:24,687 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-10 15:27:24,687 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-10 15:27:24,688 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-10-10 15:27:24,734 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 15:27:24,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 15:27:24,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 15:27:24,755 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2018-10-10 15:27:24,756 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2018-10-10 15:27:24,757 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl [2018-10-10 15:27:24,757 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20181010-MemSafetyPathprograms/alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl' [2018-10-10 15:27:24,855 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 15:27:24,857 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2018-10-10 15:27:24,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 15:27:24,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 15:27:24,858 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 15:27:24,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:24" (1/1) ... [2018-10-10 15:27:24,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:24" (1/1) ... [2018-10-10 15:27:24,907 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:24" (1/1) ... [2018-10-10 15:27:24,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:24" (1/1) ... [2018-10-10 15:27:24,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:24" (1/1) ... [2018-10-10 15:27:24,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:24" (1/1) ... [2018-10-10 15:27:24,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:24" (1/1) ... [2018-10-10 15:27:24,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 15:27:24,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 15:27:24,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 15:27:24,939 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 15:27:24,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-10 15:27:25,029 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2018-10-10 15:27:25,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 15:27:25,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 15:27:26,016 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 15:27:26,017 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:27:26 BoogieIcfgContainer [2018-10-10 15:27:26,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 15:27:26,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 15:27:26,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 15:27:26,022 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 15:27:26,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.10 03:27:24" (1/2) ... [2018-10-10 15:27:26,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5625f30a and model type alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 03:27:26, skipping insertion in model container [2018-10-10 15:27:26,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 03:27:26" (2/2) ... [2018-10-10 15:27:26,026 INFO L112 eAbstractionObserver]: Analyzing ICFG alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl [2018-10-10 15:27:26,035 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-10-10 15:27:26,044 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-10 15:27:26,059 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-10 15:27:26,088 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 15:27:26,089 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 15:27:26,089 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 15:27:26,090 INFO L384 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-10-10 15:27:26,090 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 15:27:26,090 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 15:27:26,090 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 15:27:26,090 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 15:27:26,091 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 15:27:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2018-10-10 15:27:26,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-10 15:27:26,125 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:26,127 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] [2018-10-10 15:27:26,128 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:26,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:26,135 INFO L82 PathProgramCache]: Analyzing trace with hash -35024842, now seen corresponding path program 1 times [2018-10-10 15:27:26,187 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:26,708 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:26,708 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:27:26,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:27:26,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:27:26,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:27:26,736 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 9 states. [2018-10-10 15:27:27,216 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-10 15:27:28,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:28,811 INFO L93 Difference]: Finished difference Result 310 states and 317 transitions. [2018-10-10 15:27:28,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-10 15:27:28,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2018-10-10 15:27:28,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:28,830 INFO L225 Difference]: With dead ends: 310 [2018-10-10 15:27:28,830 INFO L226 Difference]: Without dead ends: 310 [2018-10-10 15:27:28,832 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2018-10-10 15:27:28,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2018-10-10 15:27:28,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 196. [2018-10-10 15:27:28,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2018-10-10 15:27:28,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 201 transitions. [2018-10-10 15:27:28,892 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 201 transitions. Word has length 48 [2018-10-10 15:27:28,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:28,892 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 201 transitions. [2018-10-10 15:27:28,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:27:28,893 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 201 transitions. [2018-10-10 15:27:28,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2018-10-10 15:27:28,897 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:28,897 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] [2018-10-10 15:27:28,897 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:28,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:28,898 INFO L82 PathProgramCache]: Analyzing trace with hash 844876254, now seen corresponding path program 1 times [2018-10-10 15:27:28,899 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:29,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:29,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 15:27:29,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:27:29,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:27:29,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:27:29,130 INFO L87 Difference]: Start difference. First operand 196 states and 201 transitions. Second operand 11 states. [2018-10-10 15:27:30,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:30,117 INFO L93 Difference]: Finished difference Result 376 states and 383 transitions. [2018-10-10 15:27:30,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-10 15:27:30,124 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 75 [2018-10-10 15:27:30,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:30,128 INFO L225 Difference]: With dead ends: 376 [2018-10-10 15:27:30,128 INFO L226 Difference]: Without dead ends: 365 [2018-10-10 15:27:30,130 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2018-10-10 15:27:30,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2018-10-10 15:27:30,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 219. [2018-10-10 15:27:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2018-10-10 15:27:30,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 225 transitions. [2018-10-10 15:27:30,166 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 225 transitions. Word has length 75 [2018-10-10 15:27:30,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:30,167 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 225 transitions. [2018-10-10 15:27:30,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:27:30,167 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 225 transitions. [2018-10-10 15:27:30,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-10 15:27:30,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:30,175 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] [2018-10-10 15:27:30,177 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:30,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:30,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1361626762, now seen corresponding path program 1 times [2018-10-10 15:27:30,179 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:30,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:30,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2018-10-10 15:27:30,598 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:27:30,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:27:30,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:27:30,599 INFO L87 Difference]: Start difference. First operand 219 states and 225 transitions. Second operand 11 states. [2018-10-10 15:27:31,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:31,970 INFO L93 Difference]: Finished difference Result 515 states and 525 transitions. [2018-10-10 15:27:31,972 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-10 15:27:31,972 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 91 [2018-10-10 15:27:31,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:31,976 INFO L225 Difference]: With dead ends: 515 [2018-10-10 15:27:31,976 INFO L226 Difference]: Without dead ends: 510 [2018-10-10 15:27:31,977 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2018-10-10 15:27:31,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2018-10-10 15:27:31,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 237. [2018-10-10 15:27:31,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-10 15:27:31,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 244 transitions. [2018-10-10 15:27:31,993 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 244 transitions. Word has length 91 [2018-10-10 15:27:31,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:31,993 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 244 transitions. [2018-10-10 15:27:31,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:27:31,994 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 244 transitions. [2018-10-10 15:27:31,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-10-10 15:27:31,998 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:31,998 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:31,998 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:31,999 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:31,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1091503726, now seen corresponding path program 1 times [2018-10-10 15:27:32,000 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:32,250 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-10 15:27:32,250 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:32,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-10-10 15:27:32,251 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 15:27:32,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 15:27:32,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 15:27:32,252 INFO L87 Difference]: Start difference. First operand 237 states and 244 transitions. Second operand 9 states. [2018-10-10 15:27:32,646 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2018-10-10 15:27:33,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:33,030 INFO L93 Difference]: Finished difference Result 366 states and 373 transitions. [2018-10-10 15:27:33,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-10 15:27:33,031 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2018-10-10 15:27:33,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:33,034 INFO L225 Difference]: With dead ends: 366 [2018-10-10 15:27:33,035 INFO L226 Difference]: Without dead ends: 334 [2018-10-10 15:27:33,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2018-10-10 15:27:33,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-10-10 15:27:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 237. [2018-10-10 15:27:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237 states. [2018-10-10 15:27:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 243 transitions. [2018-10-10 15:27:33,046 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 243 transitions. Word has length 107 [2018-10-10 15:27:33,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:33,046 INFO L481 AbstractCegarLoop]: Abstraction has 237 states and 243 transitions. [2018-10-10 15:27:33,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 15:27:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 243 transitions. [2018-10-10 15:27:33,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-10 15:27:33,051 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:33,051 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] [2018-10-10 15:27:33,052 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:33,052 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:33,052 INFO L82 PathProgramCache]: Analyzing trace with hash -531209290, now seen corresponding path program 2 times [2018-10-10 15:27:33,053 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:33,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:33,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:27:33,210 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:27:33,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:27:33,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:27:33,212 INFO L87 Difference]: Start difference. First operand 237 states and 243 transitions. Second operand 3 states. [2018-10-10 15:27:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:33,334 INFO L93 Difference]: Finished difference Result 329 states and 335 transitions. [2018-10-10 15:27:33,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:27:33,335 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2018-10-10 15:27:33,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:33,337 INFO L225 Difference]: With dead ends: 329 [2018-10-10 15:27:33,337 INFO L226 Difference]: Without dead ends: 327 [2018-10-10 15:27:33,337 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:27:33,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2018-10-10 15:27:33,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 303. [2018-10-10 15:27:33,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2018-10-10 15:27:33,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 310 transitions. [2018-10-10 15:27:33,346 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 310 transitions. Word has length 134 [2018-10-10 15:27:33,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:33,346 INFO L481 AbstractCegarLoop]: Abstraction has 303 states and 310 transitions. [2018-10-10 15:27:33,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:27:33,347 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 310 transitions. [2018-10-10 15:27:33,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-10 15:27:33,349 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:33,349 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] [2018-10-10 15:27:33,350 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:33,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:33,350 INFO L82 PathProgramCache]: Analyzing trace with hash 850502294, now seen corresponding path program 1 times [2018-10-10 15:27:33,351 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-10-10 15:27:33,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:27:33,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-10-10 15:27:33,699 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-10 15:27:33,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-10 15:27:33,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-10-10 15:27:33,699 INFO L87 Difference]: Start difference. First operand 303 states and 310 transitions. Second operand 11 states. [2018-10-10 15:27:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:34,283 INFO L93 Difference]: Finished difference Result 328 states and 334 transitions. [2018-10-10 15:27:34,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-10 15:27:34,285 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 134 [2018-10-10 15:27:34,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:34,287 INFO L225 Difference]: With dead ends: 328 [2018-10-10 15:27:34,287 INFO L226 Difference]: Without dead ends: 323 [2018-10-10 15:27:34,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2018-10-10 15:27:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2018-10-10 15:27:34,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 194. [2018-10-10 15:27:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-10-10 15:27:34,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 197 transitions. [2018-10-10 15:27:34,293 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 197 transitions. Word has length 134 [2018-10-10 15:27:34,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:34,294 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 197 transitions. [2018-10-10 15:27:34,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-10 15:27:34,294 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 197 transitions. [2018-10-10 15:27:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-10-10 15:27:34,296 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:34,296 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:34,296 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:34,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:34,297 INFO L82 PathProgramCache]: Analyzing trace with hash -527119462, now seen corresponding path program 1 times [2018-10-10 15:27:34,298 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:34,960 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:27:36,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:36,091 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:36,091 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2018-10-10 15:27:36,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-10-10 15:27:36,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-10-10 15:27:36,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=747, Unknown=0, NotChecked=0, Total=812 [2018-10-10 15:27:36,092 INFO L87 Difference]: Start difference. First operand 194 states and 197 transitions. Second operand 29 states. [2018-10-10 15:27:37,992 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2018-10-10 15:27:38,211 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2018-10-10 15:27:38,488 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2018-10-10 15:27:38,774 WARN L178 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2018-10-10 15:27:39,049 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2018-10-10 15:27:39,325 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2018-10-10 15:27:42,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:42,206 INFO L93 Difference]: Finished difference Result 469 states and 476 transitions. [2018-10-10 15:27:42,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-10-10 15:27:42,208 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 150 [2018-10-10 15:27:42,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:42,211 INFO L225 Difference]: With dead ends: 469 [2018-10-10 15:27:42,211 INFO L226 Difference]: Without dead ends: 469 [2018-10-10 15:27:42,213 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=552, Invalid=3230, Unknown=0, NotChecked=0, Total=3782 [2018-10-10 15:27:42,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2018-10-10 15:27:42,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 359. [2018-10-10 15:27:42,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2018-10-10 15:27:42,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 365 transitions. [2018-10-10 15:27:42,222 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 365 transitions. Word has length 150 [2018-10-10 15:27:42,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:42,222 INFO L481 AbstractCegarLoop]: Abstraction has 359 states and 365 transitions. [2018-10-10 15:27:42,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-10-10 15:27:42,222 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 365 transitions. [2018-10-10 15:27:42,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-10 15:27:42,225 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:42,225 INFO L375 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:42,225 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:42,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:42,226 INFO L82 PathProgramCache]: Analyzing trace with hash 992645114, now seen corresponding path program 2 times [2018-10-10 15:27:42,227 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:42,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:43,037 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:27:43,037 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:43,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2018-10-10 15:27:43,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-10-10 15:27:43,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-10-10 15:27:43,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=844, Unknown=0, NotChecked=0, Total=930 [2018-10-10 15:27:43,040 INFO L87 Difference]: Start difference. First operand 359 states and 365 transitions. Second operand 31 states. [2018-10-10 15:27:45,644 WARN L178 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2018-10-10 15:27:46,133 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2018-10-10 15:27:47,629 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2018-10-10 15:27:48,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:27:48,058 INFO L93 Difference]: Finished difference Result 458 states and 464 transitions. [2018-10-10 15:27:48,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-10 15:27:48,059 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 177 [2018-10-10 15:27:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:27:48,062 INFO L225 Difference]: With dead ends: 458 [2018-10-10 15:27:48,062 INFO L226 Difference]: Without dead ends: 355 [2018-10-10 15:27:48,064 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 952 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=802, Invalid=3890, Unknown=0, NotChecked=0, Total=4692 [2018-10-10 15:27:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2018-10-10 15:27:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 278. [2018-10-10 15:27:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2018-10-10 15:27:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 282 transitions. [2018-10-10 15:27:48,070 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 282 transitions. Word has length 177 [2018-10-10 15:27:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:27:48,070 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 282 transitions. [2018-10-10 15:27:48,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-10-10 15:27:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 282 transitions. [2018-10-10 15:27:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-10-10 15:27:48,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:27:48,073 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:27:48,073 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:27:48,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:27:48,074 INFO L82 PathProgramCache]: Analyzing trace with hash -184551410, now seen corresponding path program 1 times [2018-10-10 15:27:48,074 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:27:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:27:49,054 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:27:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-10 15:27:51,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:27:51,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2018-10-10 15:27:51,173 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2018-10-10 15:27:51,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2018-10-10 15:27:51,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1875, Unknown=0, NotChecked=0, Total=1980 [2018-10-10 15:27:51,174 INFO L87 Difference]: Start difference. First operand 278 states and 282 transitions. Second operand 45 states. [2018-10-10 15:27:54,014 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2018-10-10 15:27:54,309 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-10 15:27:54,520 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2018-10-10 15:27:56,395 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2018-10-10 15:27:56,754 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2018-10-10 15:27:57,037 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2018-10-10 15:27:57,645 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 62 [2018-10-10 15:27:57,877 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 56 [2018-10-10 15:27:58,091 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2018-10-10 15:27:58,483 WARN L178 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2018-10-10 15:27:58,739 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2018-10-10 15:27:58,943 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 74 [2018-10-10 15:27:59,118 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 64 [2018-10-10 15:27:59,328 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2018-10-10 15:27:59,573 WARN L178 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 72 [2018-10-10 15:28:00,103 WARN L178 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 85 [2018-10-10 15:28:00,342 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 80 [2018-10-10 15:28:00,713 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 93 [2018-10-10 15:28:01,631 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2018-10-10 15:28:02,484 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2018-10-10 15:28:04,915 WARN L178 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2018-10-10 15:28:08,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:08,462 INFO L93 Difference]: Finished difference Result 499 states and 506 transitions. [2018-10-10 15:28:08,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-10-10 15:28:08,462 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 193 [2018-10-10 15:28:08,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:08,465 INFO L225 Difference]: With dead ends: 499 [2018-10-10 15:28:08,466 INFO L226 Difference]: Without dead ends: 447 [2018-10-10 15:28:08,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4078 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=1425, Invalid=15867, Unknown=0, NotChecked=0, Total=17292 [2018-10-10 15:28:08,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2018-10-10 15:28:08,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 364. [2018-10-10 15:28:08,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 364 states. [2018-10-10 15:28:08,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 369 transitions. [2018-10-10 15:28:08,479 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 369 transitions. Word has length 193 [2018-10-10 15:28:08,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:08,479 INFO L481 AbstractCegarLoop]: Abstraction has 364 states and 369 transitions. [2018-10-10 15:28:08,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2018-10-10 15:28:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 369 transitions. [2018-10-10 15:28:08,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-10 15:28:08,482 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:08,482 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-10 15:28:08,483 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:08,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:08,483 INFO L82 PathProgramCache]: Analyzing trace with hash 2040075770, now seen corresponding path program 2 times [2018-10-10 15:28:08,484 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:10,899 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2018-10-10 15:28:11,384 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 42 [2018-10-10 15:28:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:28:14,466 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:28:14,466 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2018-10-10 15:28:14,467 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2018-10-10 15:28:14,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2018-10-10 15:28:14,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=3860, Unknown=0, NotChecked=0, Total=4032 [2018-10-10 15:28:14,468 INFO L87 Difference]: Start difference. First operand 364 states and 369 transitions. Second operand 64 states. [2018-10-10 15:28:15,350 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 35 [2018-10-10 15:28:16,167 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 41 [2018-10-10 15:28:16,529 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 42 [2018-10-10 15:28:16,844 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 35 [2018-10-10 15:28:17,158 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 22 [2018-10-10 15:28:17,414 WARN L178 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 25 [2018-10-10 15:28:17,677 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 28 [2018-10-10 15:28:17,947 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 30 [2018-10-10 15:28:18,436 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 35 [2018-10-10 15:28:18,804 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 42 [2018-10-10 15:28:19,216 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 49 [2018-10-10 15:28:19,785 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 63 [2018-10-10 15:28:19,971 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2018-10-10 15:28:20,354 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 65 [2018-10-10 15:28:20,675 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2018-10-10 15:28:21,288 WARN L178 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 76 [2018-10-10 15:28:21,591 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2018-10-10 15:28:22,048 WARN L178 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 82 [2018-10-10 15:28:22,322 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 80 [2018-10-10 15:28:23,010 WARN L178 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 86 [2018-10-10 15:28:23,393 WARN L178 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2018-10-10 15:28:23,934 WARN L178 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 90 [2018-10-10 15:28:24,278 WARN L178 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 88 [2018-10-10 15:28:24,850 WARN L178 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 113 [2018-10-10 15:28:25,128 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2018-10-10 15:28:25,666 WARN L178 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 109 [2018-10-10 15:28:25,900 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 59 [2018-10-10 15:28:26,459 WARN L178 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 113 [2018-10-10 15:28:26,991 WARN L178 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 106 [2018-10-10 15:28:27,649 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 117 [2018-10-10 15:28:27,945 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 63 [2018-10-10 15:28:28,531 WARN L178 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 110 [2018-10-10 15:28:29,158 WARN L178 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 119 [2018-10-10 15:28:29,470 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2018-10-10 15:28:30,009 WARN L178 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 112 [2018-10-10 15:28:30,546 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 55 [2018-10-10 15:28:30,823 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2018-10-10 15:28:31,130 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2018-10-10 15:28:31,406 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2018-10-10 15:28:31,836 WARN L178 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 93 [2018-10-10 15:28:32,099 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 49 [2018-10-10 15:28:32,297 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2018-10-10 15:28:32,469 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2018-10-10 15:28:32,767 WARN L178 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2018-10-10 15:28:33,037 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2018-10-10 15:28:33,341 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2018-10-10 15:28:33,863 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2018-10-10 15:28:34,234 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 93 [2018-10-10 15:28:34,581 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2018-10-10 15:28:34,867 WARN L178 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2018-10-10 15:28:35,224 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 97 [2018-10-10 15:28:35,597 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 91 [2018-10-10 15:28:36,008 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2018-10-10 15:28:36,398 WARN L178 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 99 [2018-10-10 15:28:36,750 WARN L178 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2018-10-10 15:28:36,922 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2018-10-10 15:28:37,114 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2018-10-10 15:28:37,580 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 112 [2018-10-10 15:28:38,319 WARN L178 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 111 [2018-10-10 15:28:38,880 WARN L178 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 111 [2018-10-10 15:28:39,393 WARN L178 SmtUtils]: Spent 414.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 117 [2018-10-10 15:28:39,840 WARN L178 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 105 [2018-10-10 15:28:40,449 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2018-10-10 15:28:40,709 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2018-10-10 15:28:40,926 WARN L178 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2018-10-10 15:28:42,147 WARN L178 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 119 [2018-10-10 15:28:43,669 WARN L178 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 107 [2018-10-10 15:28:44,395 WARN L178 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 95 [2018-10-10 15:28:44,895 WARN L178 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 59 [2018-10-10 15:28:45,479 WARN L178 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 76 [2018-10-10 15:28:45,957 WARN L178 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 115 [2018-10-10 15:28:46,323 WARN L178 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 59 [2018-10-10 15:28:46,704 WARN L178 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 61 [2018-10-10 15:28:47,195 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 108 [2018-10-10 15:28:47,803 WARN L178 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 120 [2018-10-10 15:28:47,994 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2018-10-10 15:28:48,678 WARN L178 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 83 [2018-10-10 15:28:49,130 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 85 [2018-10-10 15:28:49,816 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 89 [2018-10-10 15:28:50,560 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 85 [2018-10-10 15:28:51,137 WARN L178 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 93 [2018-10-10 15:28:51,582 WARN L178 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 98 [2018-10-10 15:28:51,942 WARN L178 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2018-10-10 15:28:52,232 WARN L178 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 85 [2018-10-10 15:28:52,589 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2018-10-10 15:28:52,963 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2018-10-10 15:28:53,444 WARN L178 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2018-10-10 15:28:53,928 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2018-10-10 15:28:54,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:54,243 INFO L93 Difference]: Finished difference Result 592 states and 599 transitions. [2018-10-10 15:28:54,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2018-10-10 15:28:54,244 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 236 [2018-10-10 15:28:54,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:54,246 INFO L225 Difference]: With dead ends: 592 [2018-10-10 15:28:54,246 INFO L226 Difference]: Without dead ends: 592 [2018-10-10 15:28:54,253 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8814 ImplicationChecksByTransitivity, 36.5s TimeCoverageRelationStatistics Valid=3197, Invalid=28309, Unknown=0, NotChecked=0, Total=31506 [2018-10-10 15:28:54,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2018-10-10 15:28:54,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 488. [2018-10-10 15:28:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-10-10 15:28:54,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 495 transitions. [2018-10-10 15:28:54,265 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 495 transitions. Word has length 236 [2018-10-10 15:28:54,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:54,265 INFO L481 AbstractCegarLoop]: Abstraction has 488 states and 495 transitions. [2018-10-10 15:28:54,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2018-10-10 15:28:54,266 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 495 transitions. [2018-10-10 15:28:54,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2018-10-10 15:28:54,269 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:54,269 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-10 15:28:54,269 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:54,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:54,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1626409754, now seen corresponding path program 3 times [2018-10-10 15:28:54,271 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-10-10 15:28:54,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 15:28:54,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-10 15:28:54,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 15:28:54,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 15:28:54,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:28:54,380 INFO L87 Difference]: Start difference. First operand 488 states and 495 transitions. Second operand 3 states. [2018-10-10 15:28:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:28:54,482 INFO L93 Difference]: Finished difference Result 415 states and 418 transitions. [2018-10-10 15:28:54,482 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 15:28:54,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 236 [2018-10-10 15:28:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:28:54,484 INFO L225 Difference]: With dead ends: 415 [2018-10-10 15:28:54,484 INFO L226 Difference]: Without dead ends: 415 [2018-10-10 15:28:54,485 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 15:28:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2018-10-10 15:28:54,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 404. [2018-10-10 15:28:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2018-10-10 15:28:54,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 407 transitions. [2018-10-10 15:28:54,492 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 407 transitions. Word has length 236 [2018-10-10 15:28:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:28:54,493 INFO L481 AbstractCegarLoop]: Abstraction has 404 states and 407 transitions. [2018-10-10 15:28:54,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 15:28:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 407 transitions. [2018-10-10 15:28:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-10-10 15:28:54,495 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:28:54,495 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:28:54,495 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:28:54,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:28:54,496 INFO L82 PathProgramCache]: Analyzing trace with hash -634730086, now seen corresponding path program 4 times [2018-10-10 15:28:54,497 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:28:54,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:28:57,058 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 11 proven. 148 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 15:28:57,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:28:57,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2018-10-10 15:28:57,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2018-10-10 15:28:57,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2018-10-10 15:28:57,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=3027, Unknown=0, NotChecked=0, Total=3192 [2018-10-10 15:28:57,060 INFO L87 Difference]: Start difference. First operand 404 states and 407 transitions. Second operand 57 states. [2018-10-10 15:28:59,013 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 47 [2018-10-10 15:28:59,437 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2018-10-10 15:28:59,660 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 60 [2018-10-10 15:29:00,008 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 66 [2018-10-10 15:29:00,264 WARN L178 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 71 [2018-10-10 15:29:00,510 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2018-10-10 15:29:00,710 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2018-10-10 15:29:00,948 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2018-10-10 15:29:01,229 WARN L178 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2018-10-10 15:29:03,050 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2018-10-10 15:29:03,930 WARN L178 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-10 15:29:04,227 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-10 15:29:05,034 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2018-10-10 15:29:05,225 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-10 15:29:05,427 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2018-10-10 15:29:05,607 WARN L178 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2018-10-10 15:29:05,854 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2018-10-10 15:29:06,564 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2018-10-10 15:29:08,552 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2018-10-10 15:29:08,758 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 72 [2018-10-10 15:29:09,005 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2018-10-10 15:29:09,497 WARN L178 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2018-10-10 15:29:09,826 WARN L178 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2018-10-10 15:29:10,123 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 87 [2018-10-10 15:29:10,388 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 85 [2018-10-10 15:29:10,612 WARN L178 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 65 [2018-10-10 15:29:10,811 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 61 [2018-10-10 15:29:11,033 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 57 [2018-10-10 15:29:11,653 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 61 [2018-10-10 15:29:12,879 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 63 [2018-10-10 15:29:13,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:29:13,752 INFO L93 Difference]: Finished difference Result 479 states and 481 transitions. [2018-10-10 15:29:13,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2018-10-10 15:29:13,752 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 263 [2018-10-10 15:29:13,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:29:13,755 INFO L225 Difference]: With dead ends: 479 [2018-10-10 15:29:13,756 INFO L226 Difference]: Without dead ends: 376 [2018-10-10 15:29:13,757 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4614 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=1931, Invalid=17251, Unknown=0, NotChecked=0, Total=19182 [2018-10-10 15:29:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2018-10-10 15:29:13,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 323. [2018-10-10 15:29:13,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-10-10 15:29:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 325 transitions. [2018-10-10 15:29:13,764 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 325 transitions. Word has length 263 [2018-10-10 15:29:13,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:29:13,765 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 325 transitions. [2018-10-10 15:29:13,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2018-10-10 15:29:13,765 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 325 transitions. [2018-10-10 15:29:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-10-10 15:29:13,766 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:29:13,767 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-10 15:29:13,767 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:29:13,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:29:13,767 INFO L82 PathProgramCache]: Analyzing trace with hash -795283026, now seen corresponding path program 5 times [2018-10-10 15:29:13,768 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:29:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:29:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 0 proven. 239 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-10 15:29:23,380 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:29:23,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83] total 83 [2018-10-10 15:29:23,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-10-10 15:29:23,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-10-10 15:29:23,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=6558, Unknown=0, NotChecked=0, Total=6806 [2018-10-10 15:29:23,382 INFO L87 Difference]: Start difference. First operand 323 states and 325 transitions. Second operand 83 states. [2018-10-10 15:29:26,440 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 52 [2018-10-10 15:29:27,035 WARN L178 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 64 [2018-10-10 15:29:27,388 WARN L178 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 70 [2018-10-10 15:29:27,991 WARN L178 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 76 [2018-10-10 15:29:28,421 WARN L178 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 80 [2018-10-10 15:29:28,698 WARN L178 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 46 [2018-10-10 15:29:29,248 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 50 [2018-10-10 15:29:29,901 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 62 [2018-10-10 15:29:30,169 WARN L178 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2018-10-10 15:29:30,488 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 67 [2018-10-10 15:29:30,738 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 62 [2018-10-10 15:29:31,404 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 66 [2018-10-10 15:29:31,645 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 68 [2018-10-10 15:29:32,081 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 78 [2018-10-10 15:29:32,430 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 88 [2018-10-10 15:29:32,865 WARN L178 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 100 [2018-10-10 15:29:33,362 WARN L178 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 115 [2018-10-10 15:29:33,880 WARN L178 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2018-10-10 15:29:34,326 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 97 [2018-10-10 15:29:34,945 WARN L178 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 112 [2018-10-10 15:29:35,632 WARN L178 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 106 [2018-10-10 15:29:36,255 WARN L178 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 117 [2018-10-10 15:29:36,964 WARN L178 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 128 [2018-10-10 15:29:37,398 WARN L178 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2018-10-10 15:29:37,705 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 95 [2018-10-10 15:29:38,140 WARN L178 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2018-10-10 15:29:38,541 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 105 [2018-10-10 15:29:39,558 WARN L178 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2018-10-10 15:29:39,968 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-10-10 15:29:40,306 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2018-10-10 15:29:40,572 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2018-10-10 15:29:40,779 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2018-10-10 15:29:41,191 WARN L178 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2018-10-10 15:29:41,503 WARN L178 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 85 [2018-10-10 15:29:41,952 WARN L178 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2018-10-10 15:29:42,382 WARN L178 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 113 [2018-10-10 15:29:43,065 WARN L178 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 78 [2018-10-10 15:29:43,336 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 90 [2018-10-10 15:29:43,699 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 98 [2018-10-10 15:29:44,030 WARN L178 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 106 [2018-10-10 15:29:44,534 WARN L178 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 70 [2018-10-10 15:29:44,813 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2018-10-10 15:29:45,176 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2018-10-10 15:29:46,368 WARN L178 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2018-10-10 15:29:46,609 WARN L178 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2018-10-10 15:29:46,877 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2018-10-10 15:29:47,098 WARN L178 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2018-10-10 15:29:47,501 WARN L178 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2018-10-10 15:29:47,805 WARN L178 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2018-10-10 15:29:48,194 WARN L178 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2018-10-10 15:29:48,608 WARN L178 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 115 [2018-10-10 15:29:49,270 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2018-10-10 15:29:49,531 WARN L178 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2018-10-10 15:29:49,900 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2018-10-10 15:29:50,297 WARN L178 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 102 [2018-10-10 15:29:53,224 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2018-10-10 15:29:53,755 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2018-10-10 15:29:54,109 WARN L178 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2018-10-10 15:29:54,561 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2018-10-10 15:29:55,052 WARN L178 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2018-10-10 15:29:55,353 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2018-10-10 15:29:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:29:57,356 INFO L93 Difference]: Finished difference Result 471 states and 473 transitions. [2018-10-10 15:29:57,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2018-10-10 15:29:57,356 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 279 [2018-10-10 15:29:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:29:57,359 INFO L225 Difference]: With dead ends: 471 [2018-10-10 15:29:57,359 INFO L226 Difference]: Without dead ends: 419 [2018-10-10 15:29:57,362 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 2 SyntacticMatches, 7 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8675 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=2190, Invalid=33720, Unknown=0, NotChecked=0, Total=35910 [2018-10-10 15:29:57,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2018-10-10 15:29:57,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 366. [2018-10-10 15:29:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2018-10-10 15:29:57,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 368 transitions. [2018-10-10 15:29:57,368 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 368 transitions. Word has length 279 [2018-10-10 15:29:57,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:29:57,369 INFO L481 AbstractCegarLoop]: Abstraction has 366 states and 368 transitions. [2018-10-10 15:29:57,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-10-10 15:29:57,369 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 368 transitions. [2018-10-10 15:29:57,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2018-10-10 15:29:57,371 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:29:57,371 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-10 15:29:57,371 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:29:57,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:29:57,372 INFO L82 PathProgramCache]: Analyzing trace with hash 356538458, now seen corresponding path program 6 times [2018-10-10 15:29:57,372 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:29:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:29:58,326 WARN L178 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-10 15:29:58,571 WARN L178 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2018-10-10 15:30:00,449 WARN L178 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-10-10 15:30:00,673 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2018-10-10 15:30:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-10 15:30:11,956 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:30:11,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [98] total 98 [2018-10-10 15:30:11,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2018-10-10 15:30:11,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2018-10-10 15:30:11,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=9149, Unknown=0, NotChecked=0, Total=9506 [2018-10-10 15:30:11,958 INFO L87 Difference]: Start difference. First operand 366 states and 368 transitions. Second operand 98 states. [2018-10-10 15:30:14,012 WARN L178 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 42 [2018-10-10 15:30:15,530 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 37 [2018-10-10 15:30:15,906 WARN L178 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 44 [2018-10-10 15:30:16,288 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 52 [2018-10-10 15:30:16,837 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 68 [2018-10-10 15:30:17,280 WARN L178 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 69 [2018-10-10 15:30:18,022 WARN L178 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 81 [2018-10-10 15:30:18,681 WARN L178 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 88 [2018-10-10 15:30:19,566 WARN L178 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 94 [2018-10-10 15:30:20,318 WARN L178 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 244 DAG size of output: 98 [2018-10-10 15:30:21,091 WARN L178 SmtUtils]: Spent 553.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 106 [2018-10-10 15:30:21,701 WARN L178 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 103 [2018-10-10 15:30:22,492 WARN L178 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 106 [2018-10-10 15:30:23,189 WARN L178 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 105 [2018-10-10 15:30:23,859 WARN L178 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 82 [2018-10-10 15:30:24,493 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 96 [2018-10-10 15:30:25,072 WARN L178 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 86 [2018-10-10 15:30:25,618 WARN L178 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2018-10-10 15:30:26,000 WARN L178 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2018-10-10 15:30:26,396 WARN L178 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2018-10-10 15:30:26,920 WARN L178 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2018-10-10 15:30:27,419 WARN L178 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 89 [2018-10-10 15:30:28,003 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 99 [2018-10-10 15:30:28,731 WARN L178 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 116 [2018-10-10 15:30:29,521 WARN L178 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 132 [2018-10-10 15:30:30,339 WARN L178 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 136 [2018-10-10 15:30:30,931 WARN L178 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2018-10-10 15:30:31,621 WARN L178 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2018-10-10 15:30:32,387 WARN L178 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 138 [2018-10-10 15:30:33,171 WARN L178 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 125 [2018-10-10 15:30:34,080 WARN L178 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 133 [2018-10-10 15:30:34,927 WARN L178 SmtUtils]: Spent 635.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 144 [2018-10-10 15:30:35,381 WARN L178 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2018-10-10 15:30:35,730 WARN L178 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2018-10-10 15:30:36,312 WARN L178 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2018-10-10 15:30:36,779 WARN L178 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2018-10-10 15:30:37,543 WARN L178 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 96 [2018-10-10 15:30:38,174 WARN L178 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 106 [2018-10-10 15:30:38,698 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 94 [2018-10-10 15:30:39,310 WARN L178 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 92 [2018-10-10 15:30:39,944 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 96 [2018-10-10 15:30:40,372 WARN L178 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2018-10-10 15:30:40,716 WARN L178 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 90 [2018-10-10 15:30:41,027 WARN L178 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2018-10-10 15:30:41,546 WARN L178 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2018-10-10 15:30:41,993 WARN L178 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 66 [2018-10-10 15:30:42,293 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2018-10-10 15:30:42,654 WARN L178 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 87 [2018-10-10 15:30:43,093 WARN L178 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2018-10-10 15:30:43,604 WARN L178 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 115 [2018-10-10 15:30:44,133 WARN L178 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 118 [2018-10-10 15:30:44,444 WARN L178 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2018-10-10 15:30:44,855 WARN L178 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2018-10-10 15:30:45,360 WARN L178 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 119 [2018-10-10 15:30:45,834 WARN L178 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 112 [2018-10-10 15:30:46,371 WARN L178 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 120 [2018-10-10 15:30:46,978 WARN L178 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 128 [2018-10-10 15:30:47,257 WARN L178 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 76 [2018-10-10 15:30:47,506 WARN L178 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2018-10-10 15:30:47,789 WARN L178 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2018-10-10 15:30:48,708 WARN L178 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 73 [2018-10-10 15:30:48,953 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2018-10-10 15:30:49,731 WARN L178 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 68 [2018-10-10 15:30:50,417 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 59 [2018-10-10 15:30:50,942 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 43 [2018-10-10 15:30:51,292 WARN L178 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 48 [2018-10-10 15:30:51,951 WARN L178 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 93 [2018-10-10 15:30:52,752 WARN L178 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 81 [2018-10-10 15:30:53,842 WARN L178 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 71 [2018-10-10 15:30:54,363 WARN L178 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 86 [2018-10-10 15:30:54,748 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2018-10-10 15:30:55,054 WARN L178 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-10-10 15:30:57,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:30:57,183 INFO L93 Difference]: Finished difference Result 429 states and 431 transitions. [2018-10-10 15:30:57,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-10-10 15:30:57,183 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 322 [2018-10-10 15:30:57,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:30:57,187 INFO L225 Difference]: With dead ends: 429 [2018-10-10 15:30:57,187 INFO L226 Difference]: Without dead ends: 429 [2018-10-10 15:30:57,189 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 8 SyntacticMatches, 13 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7724 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=3245, Invalid=32665, Unknown=0, NotChecked=0, Total=35910 [2018-10-10 15:30:57,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-10-10 15:30:57,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 393. [2018-10-10 15:30:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2018-10-10 15:30:57,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 395 transitions. [2018-10-10 15:30:57,195 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 395 transitions. Word has length 322 [2018-10-10 15:30:57,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:30:57,196 INFO L481 AbstractCegarLoop]: Abstraction has 393 states and 395 transitions. [2018-10-10 15:30:57,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 98 states. [2018-10-10 15:30:57,196 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 395 transitions. [2018-10-10 15:30:57,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-10 15:30:57,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 15:30:57,199 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 15:30:57,199 INFO L424 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2018-10-10 15:30:57,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 15:30:57,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1617759034, now seen corresponding path program 7 times [2018-10-10 15:30:57,200 INFO L69 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-10-10 15:30:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 15:30:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 24 proven. 138 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2018-10-10 15:30:58,187 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-10-10 15:30:58,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2018-10-10 15:30:58,188 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-10-10 15:30:58,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-10-10 15:30:58,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2018-10-10 15:30:58,188 INFO L87 Difference]: Start difference. First operand 393 states and 395 transitions. Second operand 24 states. [2018-10-10 15:31:00,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 15:31:00,404 INFO L93 Difference]: Finished difference Result 370 states and 371 transitions. [2018-10-10 15:31:00,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-10-10 15:31:00,405 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 349 [2018-10-10 15:31:00,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 15:31:00,406 INFO L225 Difference]: With dead ends: 370 [2018-10-10 15:31:00,406 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 15:31:00,407 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=592, Invalid=2378, Unknown=0, NotChecked=0, Total=2970 [2018-10-10 15:31:00,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 15:31:00,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 15:31:00,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 15:31:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 15:31:00,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 349 [2018-10-10 15:31:00,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 15:31:00,409 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 15:31:00,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-10-10 15:31:00,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 15:31:00,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 15:31:00,415 INFO L202 PluginConnector]: Adding new model alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 03:31:00 BoogieIcfgContainer [2018-10-10 15:31:00,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 15:31:00,416 INFO L168 Benchmark]: Toolchain (without parser) took 215560.53 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 39.3 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 372.5 MB). Peak memory consumption was 411.8 MB. Max. memory is 7.1 GB. [2018-10-10 15:31:00,417 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:31:00,417 INFO L168 Benchmark]: Boogie Preprocessor took 81.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 15:31:00,417 INFO L168 Benchmark]: RCFGBuilder took 1078.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-10 15:31:00,418 INFO L168 Benchmark]: TraceAbstraction took 214395.99 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 39.3 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 330.2 MB). Peak memory consumption was 369.5 MB. Max. memory is 7.1 GB. [2018-10-10 15:31:00,419 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 1078.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 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 214395.99 ms. Allocated memory was 1.5 GB in the beginning and 1.6 GB in the end (delta: 39.3 MB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 330.2 MB). Peak memory consumption was 369.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 260]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 148 locations, 1 error locations. SAFE Result, 214.3s OverallTime, 15 OverallIterations, 6 TraceHistogramMax, 172.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2009 SDtfs, 25107 SDslu, 31974 SDs, 0 SdLazy, 44603 SolverSat, 1452 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1160 GetRequests, 44 SyntacticMatches, 27 SemanticMatches, 1089 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36190 ImplicationChecksByTransitivity, 156.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=488occurred 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, 15 MinimizatonAttempts, 1310 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 38.5s InterpolantComputationTime, 2794 NumberOfCodeBlocks, 2794 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2779 ConstructedInterpolants, 0 QuantifiedInterpolants, 12117023 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 561/1695 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_48.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-Benchmark-0-2018-10-10_15-31-00-432.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/alternating_list_true-unreach-call_true-valid-memsafety.i_48.bpl_heapsep-2018-09-18.epf_AutomizerBpl.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-10_15-31-00-432.csv Received shutdown request...