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/Problem19_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 22:14:07,414 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 22:14:07,416 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 22:14:07,430 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 22:14:07,433 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 22:14:07,434 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 22:14:07,435 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 22:14:07,440 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 22:14:07,443 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 22:14:07,445 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 22:14:07,447 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 22:14:07,447 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 22:14:07,448 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 22:14:07,451 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 22:14:07,452 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 22:14:07,453 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 22:14:07,454 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 22:14:07,456 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 22:14:07,458 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 22:14:07,459 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 22:14:07,460 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 22:14:07,462 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 22:14:07,464 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 22:14:07,464 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 22:14:07,464 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 22:14:07,465 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 22:14:07,466 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 22:14:07,467 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 22:14:07,468 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 22:14:07,469 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 22:14:07,469 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 22:14:07,470 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 22:14:07,470 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 22:14:07,470 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 22:14:07,471 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 22:14:07,472 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 22:14:07,472 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 [2018-10-26 22:14:07,487 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 22:14:07,487 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 22:14:07,488 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 22:14:07,488 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 22:14:07,489 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 22:14:07,489 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 22:14:07,489 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 22:14:07,489 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 22:14:07,489 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 22:14:07,490 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 22:14:07,490 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 22:14:07,490 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 22:14:07,490 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 22:14:07,490 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 22:14:07,491 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 22:14:07,491 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 22:14:07,491 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 22:14:07,491 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 22:14:07,491 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 22:14:07,492 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 22:14:07,492 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 22:14:07,492 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 22:14:07,492 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 22:14:07,492 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 22:14:07,492 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 22:14:07,493 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 22:14:07,493 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 22:14:07,493 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 22:14:07,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 22:14:07,553 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 22:14:07,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 22:14:07,559 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 22:14:07,560 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 22:14:07,560 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label49_true-unreach-call.c [2018-10-26 22:14:07,625 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9a16a3e38/4c75f047a5204a02b7cf3ce06f37378a/FLAGef3ffaed1 [2018-10-26 22:14:08,521 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 22:14:08,522 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label49_true-unreach-call.c [2018-10-26 22:14:08,562 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9a16a3e38/4c75f047a5204a02b7cf3ce06f37378a/FLAGef3ffaed1 [2018-10-26 22:14:08,582 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9a16a3e38/4c75f047a5204a02b7cf3ce06f37378a [2018-10-26 22:14:08,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 22:14:08,596 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 22:14:08,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 22:14:08,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 22:14:08,603 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 22:14:08,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:14:08" (1/1) ... [2018-10-26 22:14:08,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:08, skipping insertion in model container [2018-10-26 22:14:08,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:14:08" (1/1) ... [2018-10-26 22:14:08,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 22:14:08,890 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 22:14:10,888 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:14:10,893 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 22:14:11,963 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 22:14:12,024 INFO L193 MainTranslator]: Completed translation [2018-10-26 22:14:12,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:12 WrapperNode [2018-10-26 22:14:12,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 22:14:12,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 22:14:12,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 22:14:12,031 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 22:14:12,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:12" (1/1) ... [2018-10-26 22:14:12,135 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:12" (1/1) ... [2018-10-26 22:14:13,126 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 22:14:13,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 22:14:13,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 22:14:13,127 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 22:14:13,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:12" (1/1) ... [2018-10-26 22:14:13,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:12" (1/1) ... [2018-10-26 22:14:13,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:12" (1/1) ... [2018-10-26 22:14:13,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:12" (1/1) ... [2018-10-26 22:14:13,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:12" (1/1) ... [2018-10-26 22:14:13,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:12" (1/1) ... [2018-10-26 22:14:13,790 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:12" (1/1) ... [2018-10-26 22:14:13,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 22:14:13,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 22:14:13,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 22:14:13,982 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 22:14:13,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:12" (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 [2018-10-26 22:14:14,056 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 22:14:14,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 22:14:14,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 22:14:31,803 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 22:14:31,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:14:31 BoogieIcfgContainer [2018-10-26 22:14:31,804 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 22:14:31,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 22:14:31,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 22:14:31,808 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 22:14:31,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:14:08" (1/3) ... [2018-10-26 22:14:31,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58339dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:14:31, skipping insertion in model container [2018-10-26 22:14:31,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:14:12" (2/3) ... [2018-10-26 22:14:31,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58339dfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:14:31, skipping insertion in model container [2018-10-26 22:14:31,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:14:31" (3/3) ... [2018-10-26 22:14:31,812 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label49_true-unreach-call.c [2018-10-26 22:14:31,823 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 22:14:31,833 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 22:14:31,851 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 22:14:31,900 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 22:14:31,901 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 22:14:31,901 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 22:14:31,901 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 22:14:31,901 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 22:14:31,901 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 22:14:31,901 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 22:14:31,902 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 22:14:31,902 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 22:14:31,950 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-26 22:14:31,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-26 22:14:31,958 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:14:31,960 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] [2018-10-26 22:14:31,962 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:14:31,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:14:31,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1586436998, now seen corresponding path program 1 times [2018-10-26 22:14:31,971 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:14:31,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:14:32,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:14:32,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:14:32,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:14:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:14:32,804 WARN L179 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-26 22:14:33,597 WARN L179 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-26 22:14:33,782 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 4 [2018-10-26 22:14:33,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:14:33,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:14:33,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 22:14:33,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 22:14:33,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 22:14:33,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:14:33,924 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 6 states. [2018-10-26 22:14:34,103 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-26 22:15:19,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:15:19,453 INFO L93 Difference]: Finished difference Result 9078 states and 17600 transitions. [2018-10-26 22:15:19,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:15:19,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2018-10-26 22:15:19,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:15:19,519 INFO L225 Difference]: With dead ends: 9078 [2018-10-26 22:15:19,520 INFO L226 Difference]: Without dead ends: 7316 [2018-10-26 22:15:19,530 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-26 22:15:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7316 states. [2018-10-26 22:15:19,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7316 to 5899. [2018-10-26 22:15:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5899 states. [2018-10-26 22:15:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5899 states to 5899 states and 8691 transitions. [2018-10-26 22:15:19,769 INFO L78 Accepts]: Start accepts. Automaton has 5899 states and 8691 transitions. Word has length 43 [2018-10-26 22:15:19,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:15:19,770 INFO L481 AbstractCegarLoop]: Abstraction has 5899 states and 8691 transitions. [2018-10-26 22:15:19,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 22:15:19,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5899 states and 8691 transitions. [2018-10-26 22:15:19,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-10-26 22:15:19,785 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:15:19,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:15:19,786 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:15:19,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:15:19,786 INFO L82 PathProgramCache]: Analyzing trace with hash -752812192, now seen corresponding path program 1 times [2018-10-26 22:15:19,787 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:15:19,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:15:19,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:19,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:15:19,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:15:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2018-10-26 22:15:20,383 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:15:20,383 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 [2018-10-26 22:15:20,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:15:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:15:20,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:15:20,719 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:15:20,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:15:20,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 22:15:20,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:15:20,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:15:20,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:15:20,758 INFO L87 Difference]: Start difference. First operand 5899 states and 8691 transitions. Second operand 5 states. [2018-10-26 22:15:51,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:15:51,111 INFO L93 Difference]: Finished difference Result 22884 states and 36399 transitions. [2018-10-26 22:15:51,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 22:15:51,112 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 279 [2018-10-26 22:15:51,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:15:51,188 INFO L225 Difference]: With dead ends: 22884 [2018-10-26 22:15:51,188 INFO L226 Difference]: Without dead ends: 16987 [2018-10-26 22:15:51,199 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:15:51,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16987 states. [2018-10-26 22:15:51,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16987 to 11423. [2018-10-26 22:15:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11423 states. [2018-10-26 22:15:51,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11423 states to 11423 states and 16439 transitions. [2018-10-26 22:15:51,450 INFO L78 Accepts]: Start accepts. Automaton has 11423 states and 16439 transitions. Word has length 279 [2018-10-26 22:15:51,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:15:51,453 INFO L481 AbstractCegarLoop]: Abstraction has 11423 states and 16439 transitions. [2018-10-26 22:15:51,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:15:51,453 INFO L276 IsEmpty]: Start isEmpty. Operand 11423 states and 16439 transitions. [2018-10-26 22:15:51,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-26 22:15:51,472 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:15:51,473 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, 2, 2, 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] [2018-10-26 22:15:51,473 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:15:51,474 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:15:51,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1244154395, now seen corresponding path program 1 times [2018-10-26 22:15:51,474 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:15:51,474 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:15:51,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:51,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:15:51,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:15:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:15:51,817 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 81 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:15:51,817 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:15:51,817 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 [2018-10-26 22:15:51,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:15:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:15:51,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:15:52,050 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:15:52,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:15:52,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-26 22:15:52,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:15:52,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:15:52,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:15:52,193 INFO L87 Difference]: Start difference. First operand 11423 states and 16439 transitions. Second operand 5 states. [2018-10-26 22:16:29,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:29,305 INFO L93 Difference]: Finished difference Result 46433 states and 67120 transitions. [2018-10-26 22:16:29,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 22:16:29,309 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 347 [2018-10-26 22:16:29,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:29,386 INFO L225 Difference]: With dead ends: 46433 [2018-10-26 22:16:29,386 INFO L226 Difference]: Without dead ends: 29546 [2018-10-26 22:16:29,405 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-26 22:16:29,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29546 states. [2018-10-26 22:16:29,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29546 to 29463. [2018-10-26 22:16:29,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29463 states. [2018-10-26 22:16:29,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29463 states to 29463 states and 36254 transitions. [2018-10-26 22:16:29,834 INFO L78 Accepts]: Start accepts. Automaton has 29463 states and 36254 transitions. Word has length 347 [2018-10-26 22:16:29,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:29,835 INFO L481 AbstractCegarLoop]: Abstraction has 29463 states and 36254 transitions. [2018-10-26 22:16:29,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:16:29,836 INFO L276 IsEmpty]: Start isEmpty. Operand 29463 states and 36254 transitions. [2018-10-26 22:16:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2018-10-26 22:16:29,842 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:29,842 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, 2, 2, 2, 2, 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] [2018-10-26 22:16:29,842 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:29,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:29,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1128196187, now seen corresponding path program 1 times [2018-10-26 22:16:29,843 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:29,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:29,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:29,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:29,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:30,389 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 81 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2018-10-26 22:16:30,389 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:30,390 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 [2018-10-26 22:16:30,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:30,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:30,557 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 22:16:30,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:16:30,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 22:16:30,578 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:16:30,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:16:30,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:16:30,580 INFO L87 Difference]: Start difference. First operand 29463 states and 36254 transitions. Second operand 4 states. [2018-10-26 22:16:52,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:16:52,367 INFO L93 Difference]: Finished difference Result 109776 states and 135570 transitions. [2018-10-26 22:16:52,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:16:52,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 349 [2018-10-26 22:16:52,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:16:52,523 INFO L225 Difference]: With dead ends: 109776 [2018-10-26 22:16:52,523 INFO L226 Difference]: Without dead ends: 80315 [2018-10-26 22:16:52,560 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:16:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80315 states. [2018-10-26 22:16:53,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80315 to 52684. [2018-10-26 22:16:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52684 states. [2018-10-26 22:16:53,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52684 states to 52684 states and 63622 transitions. [2018-10-26 22:16:53,416 INFO L78 Accepts]: Start accepts. Automaton has 52684 states and 63622 transitions. Word has length 349 [2018-10-26 22:16:53,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:16:53,416 INFO L481 AbstractCegarLoop]: Abstraction has 52684 states and 63622 transitions. [2018-10-26 22:16:53,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:16:53,417 INFO L276 IsEmpty]: Start isEmpty. Operand 52684 states and 63622 transitions. [2018-10-26 22:16:53,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2018-10-26 22:16:53,441 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:16:53,442 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:16:53,442 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:16:53,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:16:53,442 INFO L82 PathProgramCache]: Analyzing trace with hash 629702866, now seen corresponding path program 1 times [2018-10-26 22:16:53,443 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:16:53,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:16:53,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:53,445 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:53,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:16:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:54,869 WARN L179 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-10-26 22:16:55,162 WARN L179 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-10-26 22:16:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 565 proven. 4 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-10-26 22:16:55,826 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:16:55,826 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 [2018-10-26 22:16:55,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:16:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:16:56,009 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:16:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 569 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2018-10-26 22:16:56,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:16:56,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-26 22:16:56,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:16:56,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:16:56,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:16:56,590 INFO L87 Difference]: Start difference. First operand 52684 states and 63622 transitions. Second operand 5 states. [2018-10-26 22:17:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:17:20,632 INFO L93 Difference]: Finished difference Result 116297 states and 138536 transitions. [2018-10-26 22:17:20,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 22:17:20,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 730 [2018-10-26 22:17:20,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:17:20,712 INFO L225 Difference]: With dead ends: 116297 [2018-10-26 22:17:20,713 INFO L226 Difference]: Without dead ends: 59514 [2018-10-26 22:17:20,747 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 730 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-26 22:17:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59514 states. [2018-10-26 22:17:21,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59514 to 58146. [2018-10-26 22:17:21,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58146 states. [2018-10-26 22:17:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58146 states to 58146 states and 65037 transitions. [2018-10-26 22:17:21,377 INFO L78 Accepts]: Start accepts. Automaton has 58146 states and 65037 transitions. Word has length 730 [2018-10-26 22:17:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:17:21,377 INFO L481 AbstractCegarLoop]: Abstraction has 58146 states and 65037 transitions. [2018-10-26 22:17:21,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:17:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 58146 states and 65037 transitions. [2018-10-26 22:17:21,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2018-10-26 22:17:21,410 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:17:21,411 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 22:17:21,411 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:17:21,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:17:21,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1844742664, now seen corresponding path program 1 times [2018-10-26 22:17:21,412 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:17:21,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:17:21,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:17:21,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:17:21,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:17:21,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:17:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 220 proven. 72 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2018-10-26 22:17:22,703 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 22:17:22,703 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 22:17:22,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:17:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:17:22,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 22:17:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2018-10-26 22:17:23,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 22:17:23,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-26 22:17:23,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 22:17:23,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 22:17:23,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:17:23,941 INFO L87 Difference]: Start difference. First operand 58146 states and 65037 transitions. Second operand 5 states. [2018-10-26 22:17:38,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:17:38,967 INFO L93 Difference]: Finished difference Result 190058 states and 214489 transitions. [2018-10-26 22:17:38,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:17:38,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 753 [2018-10-26 22:17:38,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:17:39,105 INFO L225 Difference]: With dead ends: 190058 [2018-10-26 22:17:39,106 INFO L226 Difference]: Without dead ends: 131914 [2018-10-26 22:17:39,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 756 GetRequests, 752 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 22:17:39,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131914 states. [2018-10-26 22:17:40,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131914 to 131907. [2018-10-26 22:17:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131907 states. [2018-10-26 22:17:40,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131907 states to 131907 states and 143733 transitions. [2018-10-26 22:17:40,900 INFO L78 Accepts]: Start accepts. Automaton has 131907 states and 143733 transitions. Word has length 753 [2018-10-26 22:17:40,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:17:40,901 INFO L481 AbstractCegarLoop]: Abstraction has 131907 states and 143733 transitions. [2018-10-26 22:17:40,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 22:17:40,901 INFO L276 IsEmpty]: Start isEmpty. Operand 131907 states and 143733 transitions. [2018-10-26 22:17:40,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 899 [2018-10-26 22:17:40,915 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:17:40,916 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:17:40,916 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:17:40,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:17:40,917 INFO L82 PathProgramCache]: Analyzing trace with hash -454332109, now seen corresponding path program 1 times [2018-10-26 22:17:40,917 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:17:40,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:17:40,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:17:40,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:17:40,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:17:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:17:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-26 22:17:41,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:17:41,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:17:41,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:17:41,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:17:41,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:17:41,765 INFO L87 Difference]: Start difference. First operand 131907 states and 143733 transitions. Second operand 4 states. [2018-10-26 22:17:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 22:17:56,669 INFO L93 Difference]: Finished difference Result 310263 states and 339182 transitions. [2018-10-26 22:17:56,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:17:56,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 898 [2018-10-26 22:17:56,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 22:17:56,878 INFO L225 Difference]: With dead ends: 310263 [2018-10-26 22:17:56,878 INFO L226 Difference]: Without dead ends: 178358 [2018-10-26 22:17:56,956 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 [2018-10-26 22:17:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178358 states. [2018-10-26 22:17:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178358 to 167419. [2018-10-26 22:17:59,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167419 states. [2018-10-26 22:17:59,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167419 states to 167419 states and 179231 transitions. [2018-10-26 22:17:59,307 INFO L78 Accepts]: Start accepts. Automaton has 167419 states and 179231 transitions. Word has length 898 [2018-10-26 22:17:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 22:17:59,309 INFO L481 AbstractCegarLoop]: Abstraction has 167419 states and 179231 transitions. [2018-10-26 22:17:59,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 22:17:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 167419 states and 179231 transitions. [2018-10-26 22:17:59,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2018-10-26 22:17:59,322 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 22:17:59,323 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 22:17:59,323 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 22:17:59,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 22:17:59,324 INFO L82 PathProgramCache]: Analyzing trace with hash 819861566, now seen corresponding path program 1 times [2018-10-26 22:17:59,324 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 22:17:59,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 22:17:59,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:17:59,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 22:17:59,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 22:17:59,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 22:18:00,135 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-26 22:18:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 324 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-26 22:18:00,523 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 22:18:00,523 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 22:18:00,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 22:18:00,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 22:18:00,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 22:18:00,524 INFO L87 Difference]: Start difference. First operand 167419 states and 179231 transitions. Second operand 4 states. Received shutdown request... [2018-10-26 22:18:04,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 22:18:04,971 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 22:18:04,978 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 22:18:04,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 10:18:04 BoogieIcfgContainer [2018-10-26 22:18:04,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 22:18:04,979 INFO L168 Benchmark]: Toolchain (without parser) took 236383.75 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 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 903.8 MB. Max. memory is 7.1 GB. [2018-10-26 22:18:04,980 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. [2018-10-26 22:18:04,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3427.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-26 22:18:04,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 1100.65 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 875.6 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-26 22:18:04,983 INFO L168 Benchmark]: Boogie Preprocessor took 855.06 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: 106.9 MB). Peak memory consumption was 106.9 MB. Max. memory is 7.1 GB. [2018-10-26 22:18:04,983 INFO L168 Benchmark]: RCFGBuilder took 17822.45 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 286.8 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -390.9 MB). Peak memory consumption was 840.1 MB. Max. memory is 7.1 GB. [2018-10-26 22:18:04,984 INFO L168 Benchmark]: TraceAbstraction took 213173.19 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.1 GB). Free memory was 2.5 GB in the beginning and 2.8 GB in the end (delta: -352.7 MB). Peak memory consumption was 785.0 MB. Max. memory is 7.1 GB. [2018-10-26 22:18:04,989 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 3427.41 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1100.65 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 875.6 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 855.06 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: 106.9 MB). Peak memory consumption was 106.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17822.45 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 286.8 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -390.9 MB). Peak memory consumption was 840.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213173.19 ms. Allocated memory was 2.7 GB in the beginning and 3.8 GB in the end (delta: 1.1 GB). Free memory was 2.5 GB in the beginning and 2.8 GB in the end (delta: -352.7 MB). Peak memory consumption was 785.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 142). Cancelled while BasicCegarLoop was constructing difference of abstraction (167419states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (8656 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 213.0s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 194.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10527 SDtfs, 39532 SDslu, 3581 SDs, 0 SdLazy, 86653 SolverSat, 21914 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 166.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2493 GetRequests, 2462 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167419occurred in iteration=7, 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: 6.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 47009 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 6788 NumberOfCodeBlocks, 6788 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 6775 ConstructedInterpolants, 0 QuantifiedInterpolants, 12008463 SizeOfPredicates, 8 NumberOfNonLiveVariables, 2967 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 4374/4524 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown