java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label39_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:23:32,139 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:23:32,142 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:23:32,158 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:23:32,158 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:23:32,159 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:23:32,161 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:23:32,163 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:23:32,164 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:23:32,165 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:23:32,166 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:23:32,166 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:23:32,167 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:23:32,168 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:23:32,169 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:23:32,170 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:23:32,171 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:23:32,173 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:23:32,175 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:23:32,176 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:23:32,177 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:23:32,178 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:23:32,181 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:23:32,189 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 16:23:32,207 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:23:32,207 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:23:32,208 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:23:32,208 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:23:32,209 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:23:32,209 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:23:32,209 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:23:32,209 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:23:32,210 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:23:32,210 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:23:32,210 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:23:32,210 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:23:32,211 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:23:32,211 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:23:32,211 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:23:32,211 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:23:32,211 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:23:32,212 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:23:32,212 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:23:32,212 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:23:32,212 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:23:32,212 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:23:32,213 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:23:32,214 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:23:32,214 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:23:32,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:23:32,214 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:23:32,215 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:23:32,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:23:32,286 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:23:32,291 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:23:32,292 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:23:32,293 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:23:32,293 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label39_true-unreach-call.c [2018-10-24 16:23:32,359 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/493def144/e10be4c5ce034784907c0f06a8605f9e/FLAG8844ba6fe [2018-10-24 16:23:33,176 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:23:33,177 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label39_true-unreach-call.c [2018-10-24 16:23:33,214 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/493def144/e10be4c5ce034784907c0f06a8605f9e/FLAG8844ba6fe [2018-10-24 16:23:33,233 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/493def144/e10be4c5ce034784907c0f06a8605f9e [2018-10-24 16:23:33,247 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:23:33,249 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:23:33,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:23:33,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:23:33,256 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:23:33,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:23:33" (1/1) ... [2018-10-24 16:23:33,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:33, skipping insertion in model container [2018-10-24 16:23:33,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:23:33" (1/1) ... [2018-10-24 16:23:33,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:23:33,448 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:23:34,850 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:23:34,855 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:23:35,637 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:23:35,673 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:23:35,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:35 WrapperNode [2018-10-24 16:23:35,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:23:35,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:23:35,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:23:35,675 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:23:35,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:35" (1/1) ... [2018-10-24 16:23:35,755 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:35" (1/1) ... [2018-10-24 16:23:36,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:23:36,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:23:36,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:23:36,497 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:23:36,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:35" (1/1) ... [2018-10-24 16:23:36,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:35" (1/1) ... [2018-10-24 16:23:36,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:35" (1/1) ... [2018-10-24 16:23:36,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:35" (1/1) ... [2018-10-24 16:23:36,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:35" (1/1) ... [2018-10-24 16:23:36,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:35" (1/1) ... [2018-10-24 16:23:36,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:35" (1/1) ... [2018-10-24 16:23:36,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:23:36,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:23:36,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:23:36,965 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:23:36,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:23:37,021 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:23:37,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:23:37,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:23:49,905 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:23:49,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:23:49 BoogieIcfgContainer [2018-10-24 16:23:49,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:23:49,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:23:49,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:23:49,911 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:23:49,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:23:33" (1/3) ... [2018-10-24 16:23:49,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3634d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:23:49, skipping insertion in model container [2018-10-24 16:23:49,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:23:35" (2/3) ... [2018-10-24 16:23:49,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3634d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:23:49, skipping insertion in model container [2018-10-24 16:23:49,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:23:49" (3/3) ... [2018-10-24 16:23:49,916 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label39_true-unreach-call.c [2018-10-24 16:23:49,927 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:23:49,937 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:23:49,955 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:23:50,002 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:23:50,003 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:23:50,003 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:23:50,004 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:23:50,004 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:23:50,004 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:23:50,004 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:23:50,004 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:23:50,004 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:23:50,044 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 16:23:50,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-24 16:23:50,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:23:50,057 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:23:50,059 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:23:50,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:23:50,067 INFO L82 PathProgramCache]: Analyzing trace with hash -2139005982, now seen corresponding path program 1 times [2018-10-24 16:23:50,069 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:23:50,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:23:50,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:50,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:23:50,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:23:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:23:51,575 WARN L179 SmtUtils]: Spent 917.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-24 16:23:51,738 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 4 [2018-10-24 16:23:51,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:23:51,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:23:51,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:23:51,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:23:51,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:23:51,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:23:51,976 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 5 states. [2018-10-24 16:23:52,156 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 16:24:12,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:12,653 INFO L93 Difference]: Finished difference Result 4624 states and 8784 transitions. [2018-10-24 16:24:12,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:24:12,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2018-10-24 16:24:12,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:12,704 INFO L225 Difference]: With dead ends: 4624 [2018-10-24 16:24:12,705 INFO L226 Difference]: Without dead ends: 3515 [2018-10-24 16:24:12,715 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:24:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2018-10-24 16:24:12,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3514. [2018-10-24 16:24:12,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3514 states. [2018-10-24 16:24:12,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3514 states to 3514 states and 5233 transitions. [2018-10-24 16:24:12,898 INFO L78 Accepts]: Start accepts. Automaton has 3514 states and 5233 transitions. Word has length 52 [2018-10-24 16:24:12,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:12,899 INFO L481 AbstractCegarLoop]: Abstraction has 3514 states and 5233 transitions. [2018-10-24 16:24:12,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:24:12,899 INFO L276 IsEmpty]: Start isEmpty. Operand 3514 states and 5233 transitions. [2018-10-24 16:24:12,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-24 16:24:12,907 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:12,908 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:12,908 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:12,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:12,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1783474675, now seen corresponding path program 1 times [2018-10-24 16:24:12,909 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:12,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:12,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:12,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:12,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:13,469 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:24:13,469 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:24:13,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:13,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:13,585 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:24:13,782 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:13,820 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:24:13,821 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-10-24 16:24:13,822 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:24:13,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:24:13,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:13,826 INFO L87 Difference]: Start difference. First operand 3514 states and 5233 transitions. Second operand 5 states. [2018-10-24 16:24:35,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:35,113 INFO L93 Difference]: Finished difference Result 11950 states and 19425 transitions. [2018-10-24 16:24:35,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:24:35,116 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 178 [2018-10-24 16:24:35,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:35,161 INFO L225 Difference]: With dead ends: 11950 [2018-10-24 16:24:35,162 INFO L226 Difference]: Without dead ends: 9226 [2018-10-24 16:24:35,168 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9226 states. [2018-10-24 16:24:35,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9226 to 7520. [2018-10-24 16:24:35,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7520 states. [2018-10-24 16:24:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7520 states to 7520 states and 10752 transitions. [2018-10-24 16:24:35,334 INFO L78 Accepts]: Start accepts. Automaton has 7520 states and 10752 transitions. Word has length 178 [2018-10-24 16:24:35,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:35,335 INFO L481 AbstractCegarLoop]: Abstraction has 7520 states and 10752 transitions. [2018-10-24 16:24:35,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:24:35,335 INFO L276 IsEmpty]: Start isEmpty. Operand 7520 states and 10752 transitions. [2018-10-24 16:24:35,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-10-24 16:24:35,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:35,348 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:35,348 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:35,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:35,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1440360477, now seen corresponding path program 1 times [2018-10-24 16:24:35,349 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:35,349 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:35,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:35,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:35,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:35,785 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 99 proven. 4 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 16:24:35,786 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:24:35,786 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:24:35,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:35,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:35,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:24:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:35,989 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:24:35,989 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:24:35,993 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:24:35,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:24:35,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:35,994 INFO L87 Difference]: Start difference. First operand 7520 states and 10752 transitions. Second operand 4 states. [2018-10-24 16:24:46,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:46,302 INFO L93 Difference]: Finished difference Result 23795 states and 35461 transitions. [2018-10-24 16:24:46,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:46,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2018-10-24 16:24:46,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:46,374 INFO L225 Difference]: With dead ends: 23795 [2018-10-24 16:24:46,374 INFO L226 Difference]: Without dead ends: 17065 [2018-10-24 16:24:46,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:24:46,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17065 states. [2018-10-24 16:24:46,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17065 to 10681. [2018-10-24 16:24:46,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10681 states. [2018-10-24 16:24:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10681 states to 10681 states and 14411 transitions. [2018-10-24 16:24:46,620 INFO L78 Accepts]: Start accepts. Automaton has 10681 states and 14411 transitions. Word has length 221 [2018-10-24 16:24:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:46,622 INFO L481 AbstractCegarLoop]: Abstraction has 10681 states and 14411 transitions. [2018-10-24 16:24:46,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:24:46,622 INFO L276 IsEmpty]: Start isEmpty. Operand 10681 states and 14411 transitions. [2018-10-24 16:24:46,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-24 16:24:46,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:46,627 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-24 16:24:46,627 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:46,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:46,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1623588500, now seen corresponding path program 1 times [2018-10-24 16:24:46,628 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:46,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:46,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:46,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:46,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 99 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-10-24 16:24:47,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:24:47,062 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:24:47,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:47,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:24:47,579 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2018-10-24 16:24:47,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:24:47,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 16:24:47,615 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:24:47,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:24:47,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:47,616 INFO L87 Difference]: Start difference. First operand 10681 states and 14411 transitions. Second operand 5 states. [2018-10-24 16:24:58,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:24:58,277 INFO L93 Difference]: Finished difference Result 33179 states and 46407 transitions. [2018-10-24 16:24:58,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:24:58,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2018-10-24 16:24:58,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:24:58,340 INFO L225 Difference]: With dead ends: 33179 [2018-10-24 16:24:58,340 INFO L226 Difference]: Without dead ends: 23288 [2018-10-24 16:24:58,358 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:58,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23288 states. [2018-10-24 16:24:58,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23288 to 22497. [2018-10-24 16:24:58,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22497 states. [2018-10-24 16:24:58,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22497 states to 22497 states and 28344 transitions. [2018-10-24 16:24:58,722 INFO L78 Accepts]: Start accepts. Automaton has 22497 states and 28344 transitions. Word has length 247 [2018-10-24 16:24:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:24:58,722 INFO L481 AbstractCegarLoop]: Abstraction has 22497 states and 28344 transitions. [2018-10-24 16:24:58,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:24:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 22497 states and 28344 transitions. [2018-10-24 16:24:58,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-10-24 16:24:58,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:24:58,728 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:24:58,728 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:24:58,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:24:58,729 INFO L82 PathProgramCache]: Analyzing trace with hash 2062980818, now seen corresponding path program 1 times [2018-10-24 16:24:58,729 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:24:58,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:24:58,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:58,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:24:58,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:24:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:24:59,184 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 16:24:59,435 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:24:59,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:24:59,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:24:59,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:24:59,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:24:59,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:24:59,437 INFO L87 Difference]: Start difference. First operand 22497 states and 28344 transitions. Second operand 5 states. [2018-10-24 16:25:19,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:19,607 INFO L93 Difference]: Finished difference Result 98108 states and 125214 transitions. [2018-10-24 16:25:19,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:25:19,607 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 251 [2018-10-24 16:25:19,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:19,750 INFO L225 Difference]: With dead ends: 98108 [2018-10-24 16:25:19,751 INFO L226 Difference]: Without dead ends: 76401 [2018-10-24 16:25:19,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:25:19,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76401 states. [2018-10-24 16:25:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76401 to 74624. [2018-10-24 16:25:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74624 states. [2018-10-24 16:25:20,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74624 states to 74624 states and 90124 transitions. [2018-10-24 16:25:20,658 INFO L78 Accepts]: Start accepts. Automaton has 74624 states and 90124 transitions. Word has length 251 [2018-10-24 16:25:20,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:20,658 INFO L481 AbstractCegarLoop]: Abstraction has 74624 states and 90124 transitions. [2018-10-24 16:25:20,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:25:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 74624 states and 90124 transitions. [2018-10-24 16:25:20,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-10-24 16:25:20,669 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:20,670 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:25:20,670 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:20,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:20,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1177818110, now seen corresponding path program 1 times [2018-10-24 16:25:20,670 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:20,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:20,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:20,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:20,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2018-10-24 16:25:21,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:21,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:25:21,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:25:21,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:25:21,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:21,192 INFO L87 Difference]: Start difference. First operand 74624 states and 90124 transitions. Second operand 4 states. [2018-10-24 16:25:33,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:33,128 INFO L93 Difference]: Finished difference Result 238332 states and 288632 transitions. [2018-10-24 16:25:33,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:33,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 341 [2018-10-24 16:25:33,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:33,351 INFO L225 Difference]: With dead ends: 238332 [2018-10-24 16:25:33,351 INFO L226 Difference]: Without dead ends: 159753 [2018-10-24 16:25:33,426 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:33,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159753 states. [2018-10-24 16:25:34,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159753 to 159710. [2018-10-24 16:25:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159710 states. [2018-10-24 16:25:34,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159710 states to 159710 states and 184111 transitions. [2018-10-24 16:25:34,921 INFO L78 Accepts]: Start accepts. Automaton has 159710 states and 184111 transitions. Word has length 341 [2018-10-24 16:25:34,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:34,922 INFO L481 AbstractCegarLoop]: Abstraction has 159710 states and 184111 transitions. [2018-10-24 16:25:34,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:25:34,922 INFO L276 IsEmpty]: Start isEmpty. Operand 159710 states and 184111 transitions. [2018-10-24 16:25:34,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2018-10-24 16:25:34,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:34,943 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:25:34,943 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:34,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:34,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1547239283, now seen corresponding path program 1 times [2018-10-24 16:25:34,944 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:34,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:34,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:34,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:34,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 338 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-10-24 16:25:36,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:36,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:25:36,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:25:36,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:25:36,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:36,072 INFO L87 Difference]: Start difference. First operand 159710 states and 184111 transitions. Second operand 4 states. [2018-10-24 16:25:47,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:47,279 INFO L93 Difference]: Finished difference Result 317878 states and 366526 transitions. [2018-10-24 16:25:47,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:25:47,282 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 353 [2018-10-24 16:25:47,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:47,450 INFO L225 Difference]: With dead ends: 317878 [2018-10-24 16:25:47,450 INFO L226 Difference]: Without dead ends: 154207 [2018-10-24 16:25:47,538 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:47,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154207 states. [2018-10-24 16:25:49,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154207 to 145491. [2018-10-24 16:25:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145491 states. [2018-10-24 16:25:49,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145491 states to 145491 states and 160011 transitions. [2018-10-24 16:25:49,401 INFO L78 Accepts]: Start accepts. Automaton has 145491 states and 160011 transitions. Word has length 353 [2018-10-24 16:25:49,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:49,402 INFO L481 AbstractCegarLoop]: Abstraction has 145491 states and 160011 transitions. [2018-10-24 16:25:49,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:25:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 145491 states and 160011 transitions. [2018-10-24 16:25:49,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2018-10-24 16:25:49,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:49,409 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:25:49,409 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:49,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:49,409 INFO L82 PathProgramCache]: Analyzing trace with hash -762174136, now seen corresponding path program 1 times [2018-10-24 16:25:49,410 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:49,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:49,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:49,411 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:49,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:25:49,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:49,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:25:49,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:25:49,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:25:49,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:25:49,713 INFO L87 Difference]: Start difference. First operand 145491 states and 160011 transitions. Second operand 3 states. [2018-10-24 16:25:55,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:25:55,597 INFO L93 Difference]: Finished difference Result 288611 states and 317845 transitions. [2018-10-24 16:25:55,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:25:55,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 371 [2018-10-24 16:25:55,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:25:55,791 INFO L225 Difference]: With dead ends: 288611 [2018-10-24 16:25:55,792 INFO L226 Difference]: Without dead ends: 143910 [2018-10-24 16:25:55,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:25:55,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143910 states. [2018-10-24 16:25:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143910 to 139968. [2018-10-24 16:25:58,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139968 states. [2018-10-24 16:25:58,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139968 states to 139968 states and 149994 transitions. [2018-10-24 16:25:58,852 INFO L78 Accepts]: Start accepts. Automaton has 139968 states and 149994 transitions. Word has length 371 [2018-10-24 16:25:58,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:25:58,853 INFO L481 AbstractCegarLoop]: Abstraction has 139968 states and 149994 transitions. [2018-10-24 16:25:58,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:25:58,853 INFO L276 IsEmpty]: Start isEmpty. Operand 139968 states and 149994 transitions. [2018-10-24 16:25:58,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2018-10-24 16:25:58,867 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:25:58,867 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:25:58,868 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:25:58,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:25:58,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1006150929, now seen corresponding path program 1 times [2018-10-24 16:25:58,868 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:25:58,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:25:58,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:58,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:25:58,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:25:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:25:59,286 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 521 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-10-24 16:25:59,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:25:59,287 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:25:59,288 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:25:59,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:25:59,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:25:59,288 INFO L87 Difference]: Start difference. First operand 139968 states and 149994 transitions. Second operand 4 states. [2018-10-24 16:26:09,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:09,638 INFO L93 Difference]: Finished difference Result 290177 states and 311121 transitions. [2018-10-24 16:26:09,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:09,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 450 [2018-10-24 16:26:09,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:09,791 INFO L225 Difference]: With dead ends: 290177 [2018-10-24 16:26:09,791 INFO L226 Difference]: Without dead ends: 129649 [2018-10-24 16:26:09,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:09,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129649 states. [2018-10-24 16:26:10,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129649 to 120185. [2018-10-24 16:26:10,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120185 states. [2018-10-24 16:26:10,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120185 states to 120185 states and 127715 transitions. [2018-10-24 16:26:10,945 INFO L78 Accepts]: Start accepts. Automaton has 120185 states and 127715 transitions. Word has length 450 [2018-10-24 16:26:10,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:10,945 INFO L481 AbstractCegarLoop]: Abstraction has 120185 states and 127715 transitions. [2018-10-24 16:26:10,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:10,946 INFO L276 IsEmpty]: Start isEmpty. Operand 120185 states and 127715 transitions. [2018-10-24 16:26:10,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2018-10-24 16:26:10,956 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:10,956 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:26:10,956 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:10,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:10,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1572031218, now seen corresponding path program 1 times [2018-10-24 16:26:10,957 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:10,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:10,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:10,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:10,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:11,375 INFO L134 CoverageAnalysis]: Checked inductivity of 790 backedges. 515 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 16:26:11,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:26:11,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:26:11,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:26:11,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:26:11,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:11,377 INFO L87 Difference]: Start difference. First operand 120185 states and 127715 transitions. Second operand 4 states. [2018-10-24 16:26:22,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:22,655 INFO L93 Difference]: Finished difference Result 304214 states and 325858 transitions. [2018-10-24 16:26:22,657 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:22,657 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 504 [2018-10-24 16:26:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:22,870 INFO L225 Difference]: With dead ends: 304214 [2018-10-24 16:26:22,870 INFO L226 Difference]: Without dead ends: 181657 [2018-10-24 16:26:22,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181657 states. [2018-10-24 16:26:25,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181657 to 172178. [2018-10-24 16:26:25,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172178 states. [2018-10-24 16:26:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172178 states to 172178 states and 182279 transitions. [2018-10-24 16:26:25,625 INFO L78 Accepts]: Start accepts. Automaton has 172178 states and 182279 transitions. Word has length 504 [2018-10-24 16:26:25,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:25,626 INFO L481 AbstractCegarLoop]: Abstraction has 172178 states and 182279 transitions. [2018-10-24 16:26:25,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:25,627 INFO L276 IsEmpty]: Start isEmpty. Operand 172178 states and 182279 transitions. [2018-10-24 16:26:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2018-10-24 16:26:25,634 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:25,634 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:26:25,634 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:25,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:25,635 INFO L82 PathProgramCache]: Analyzing trace with hash -750534439, now seen corresponding path program 1 times [2018-10-24 16:26:25,635 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:25,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:25,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:25,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:25,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 692 proven. 0 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-10-24 16:26:27,602 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:26:27,602 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:26:27,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:26:27,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:26:27,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:27,603 INFO L87 Difference]: Start difference. First operand 172178 states and 182279 transitions. Second operand 4 states. [2018-10-24 16:26:47,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:26:47,916 INFO L93 Difference]: Finished difference Result 383889 states and 407084 transitions. [2018-10-24 16:26:47,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:26:47,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 513 [2018-10-24 16:26:47,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:26:48,170 INFO L225 Difference]: With dead ends: 383889 [2018-10-24 16:26:48,171 INFO L226 Difference]: Without dead ends: 212501 [2018-10-24 16:26:48,258 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:26:48,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212501 states. [2018-10-24 16:26:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212501 to 202922. [2018-10-24 16:26:55,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202922 states. [2018-10-24 16:26:55,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202922 states to 202922 states and 215285 transitions. [2018-10-24 16:26:55,961 INFO L78 Accepts]: Start accepts. Automaton has 202922 states and 215285 transitions. Word has length 513 [2018-10-24 16:26:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:26:55,962 INFO L481 AbstractCegarLoop]: Abstraction has 202922 states and 215285 transitions. [2018-10-24 16:26:55,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:26:55,962 INFO L276 IsEmpty]: Start isEmpty. Operand 202922 states and 215285 transitions. [2018-10-24 16:26:55,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2018-10-24 16:26:55,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:26:55,969 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:26:55,969 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:26:55,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:26:55,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1359207258, now seen corresponding path program 1 times [2018-10-24 16:26:55,969 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:26:55,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:26:55,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:55,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:26:55,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:26:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:26:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-10-24 16:26:56,635 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:26:56,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:26:56,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 16:26:56,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 16:26:56,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:26:56,636 INFO L87 Difference]: Start difference. First operand 202922 states and 215285 transitions. Second operand 5 states. [2018-10-24 16:27:10,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:27:10,456 INFO L93 Difference]: Finished difference Result 464993 states and 493193 transitions. [2018-10-24 16:27:10,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:27:10,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 535 [2018-10-24 16:27:10,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:27:10,739 INFO L225 Difference]: With dead ends: 464993 [2018-10-24 16:27:10,739 INFO L226 Difference]: Without dead ends: 262861 [2018-10-24 16:27:11,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 16:27:11,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262861 states. [2018-10-24 16:27:13,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262861 to 247072. [2018-10-24 16:27:13,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247072 states. [2018-10-24 16:27:13,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247072 states to 247072 states and 260164 transitions. [2018-10-24 16:27:13,633 INFO L78 Accepts]: Start accepts. Automaton has 247072 states and 260164 transitions. Word has length 535 [2018-10-24 16:27:13,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:27:13,633 INFO L481 AbstractCegarLoop]: Abstraction has 247072 states and 260164 transitions. [2018-10-24 16:27:13,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 16:27:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 247072 states and 260164 transitions. [2018-10-24 16:27:13,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 716 [2018-10-24 16:27:13,659 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:27:13,660 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:27:13,660 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:27:13,660 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:27:13,660 INFO L82 PathProgramCache]: Analyzing trace with hash 2059296093, now seen corresponding path program 1 times [2018-10-24 16:27:13,660 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:27:13,660 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:27:13,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:13,661 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:13,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:27:13,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 149 proven. 353 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-24 16:27:15,259 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:27:15,259 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 16:27:15,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:27:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:27:15,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:27:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 50 proven. 452 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-24 16:27:16,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:27:16,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-10-24 16:27:16,602 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:27:16,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:27:16,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:27:16,603 INFO L87 Difference]: Start difference. First operand 247072 states and 260164 transitions. Second operand 6 states. Received shutdown request... [2018-10-24 16:27:20,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 16:27:20,448 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:27:20,455 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:27:20,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:27:20 BoogieIcfgContainer [2018-10-24 16:27:20,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:27:20,456 INFO L168 Benchmark]: Toolchain (without parser) took 227208.64 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-24 16:27:20,458 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:27:20,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2422.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:27:20,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 821.12 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 826.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. [2018-10-24 16:27:20,460 INFO L168 Benchmark]: Boogie Preprocessor took 467.57 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 68.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:27:20,461 INFO L168 Benchmark]: RCFGBuilder took 12942.02 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 242.2 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 25.9 MB). Peak memory consumption was 594.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:27:20,462 INFO L168 Benchmark]: TraceAbstraction took 210548.17 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -746.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-10-24 16:27:20,467 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2422.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 821.12 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 826.3 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 467.57 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 68.9 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12942.02 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 242.2 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 25.9 MB). Peak memory consumption was 594.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210548.17 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 2.8 GB in the end (delta: -746.2 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 165]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 165). Cancelled while BasicCegarLoop was constructing difference of abstraction (247072states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (6693 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 210.4s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 174.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8781 SDtfs, 28103 SDslu, 3495 SDs, 0 SdLazy, 67581 SolverSat, 16107 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 139.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1417 GetRequests, 1372 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=247072occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 21.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 67671 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 6092 NumberOfCodeBlocks, 6092 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 6075 ConstructedInterpolants, 0 QuantifiedInterpolants, 6923049 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1762 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 17 InterpolantComputations, 11 PerfectInterpolantSequences, 5188/6096 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown