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_label07_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:03:57,105 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:03:57,107 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:03:57,118 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:03:57,119 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:03:57,120 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:03:57,121 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:03:57,123 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:03:57,124 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:03:57,125 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:03:57,126 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:03:57,126 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:03:57,127 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:03:57,128 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:03:57,129 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:03:57,130 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:03:57,131 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:03:57,135 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:03:57,140 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:03:57,143 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:03:57,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:03:57,146 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:03:57,151 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:03:57,151 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:03:57,152 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:03:57,153 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:03:57,154 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:03:57,155 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:03:57,156 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:03:57,158 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:03:57,158 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:03:57,160 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-23 18:03:57,160 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 18:03:57,160 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 18:03:57,161 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 18:03:57,164 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 18:03:57,164 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 [2018-10-23 18:03:57,192 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:03:57,193 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:03:57,193 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:03:57,194 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:03:57,194 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:03:57,194 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:03:57,195 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:03:57,195 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:03:57,195 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:03:57,195 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:03:57,195 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:03:57,196 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:03:57,196 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:03:57,196 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:03:57,196 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:03:57,196 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:03:57,197 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:03:57,197 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:03:57,197 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:03:57,197 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:03:57,197 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:03:57,198 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:03:57,198 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:03:57,198 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:03:57,198 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:03:57,198 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:03:57,200 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:03:57,200 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:03:57,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:03:57,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:03:57,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:03:57,269 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:03:57,270 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:03:57,270 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label07_false-unreach-call.c [2018-10-23 18:03:57,328 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ee5722546/6c6cfec883ed464d94bd8748fefb1b86/FLAG265837869 [2018-10-23 18:03:58,191 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:03:58,192 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label07_false-unreach-call.c [2018-10-23 18:03:58,238 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ee5722546/6c6cfec883ed464d94bd8748fefb1b86/FLAG265837869 [2018-10-23 18:03:58,260 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ee5722546/6c6cfec883ed464d94bd8748fefb1b86 [2018-10-23 18:03:58,273 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:03:58,276 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:03:58,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:03:58,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:03:58,283 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:03:58,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:03:58" (1/1) ... [2018-10-23 18:03:58,288 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 23.10 06:03:58, skipping insertion in model container [2018-10-23 18:03:58,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:03:58" (1/1) ... [2018-10-23 18:03:58,299 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:03:58,489 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:03:59,861 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:03:59,865 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:04:00,582 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:04:00,619 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:04:00,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:00 WrapperNode [2018-10-23 18:04:00,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:04:00,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:04:00,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:04:00,621 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:04:00,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:00" (1/1) ... [2018-10-23 18:04:00,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:00" (1/1) ... [2018-10-23 18:04:01,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:04:01,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:04:01,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:04:01,493 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:04:01,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:00" (1/1) ... [2018-10-23 18:04:01,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:00" (1/1) ... [2018-10-23 18:04:01,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:00" (1/1) ... [2018-10-23 18:04:01,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:00" (1/1) ... [2018-10-23 18:04:01,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:00" (1/1) ... [2018-10-23 18:04:01,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:00" (1/1) ... [2018-10-23 18:04:02,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:00" (1/1) ... [2018-10-23 18:04:02,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:04:02,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:04:02,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:04:02,115 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:04:02,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:00" (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 [2018-10-23 18:04:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:04:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:04:02,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:04:19,392 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:04:19,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:04:19 BoogieIcfgContainer [2018-10-23 18:04:19,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:04:19,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:04:19,394 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:04:19,397 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:04:19,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:03:58" (1/3) ... [2018-10-23 18:04:19,398 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 23.10 06:04:19, skipping insertion in model container [2018-10-23 18:04:19,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:04:00" (2/3) ... [2018-10-23 18:04:19,399 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 23.10 06:04:19, skipping insertion in model container [2018-10-23 18:04:19,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:04:19" (3/3) ... [2018-10-23 18:04:19,401 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label07_false-unreach-call.c [2018-10-23 18:04:19,410 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:04:19,419 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:04:19,436 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:04:19,481 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:04:19,481 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:04:19,482 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:04:19,482 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:04:19,482 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:04:19,482 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:04:19,482 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:04:19,482 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:04:19,483 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:04:19,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-23 18:04:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-23 18:04:19,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:04:19,526 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] [2018-10-23 18:04:19,528 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:04:19,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:04:19,534 INFO L82 PathProgramCache]: Analyzing trace with hash 682595178, now seen corresponding path program 1 times [2018-10-23 18:04:19,536 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:04:19,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:04:19,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:19,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:19,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:04:19,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:04:19,872 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:04:19,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:04:19,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:04:19,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:04:19,896 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-23 18:04:34,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:04:34,258 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-23 18:04:34,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:04:34,261 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-10-23 18:04:34,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:04:34,307 INFO L225 Difference]: With dead ends: 3896 [2018-10-23 18:04:34,307 INFO L226 Difference]: Without dead ends: 2790 [2018-10-23 18:04:34,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:04:34,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-23 18:04:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-23 18:04:34,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-23 18:04:34,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-23 18:04:34,480 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 22 [2018-10-23 18:04:34,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:04:34,480 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-23 18:04:34,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:04:34,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-23 18:04:34,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-23 18:04:34,485 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:04:34,486 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:04:34,486 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:04:34,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:04:34,489 INFO L82 PathProgramCache]: Analyzing trace with hash -267031502, now seen corresponding path program 1 times [2018-10-23 18:04:34,489 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:04:34,489 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:04:34,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:34,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:34,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:35,360 WARN L179 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 27 [2018-10-23 18:04:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:04:35,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:04:35,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:04:35,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:04:35,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:04:35,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:04:35,628 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-23 18:04:35,889 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-23 18:04:54,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:04:54,329 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-23 18:04:54,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:04:54,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-10-23 18:04:54,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:04:54,359 INFO L225 Difference]: With dead ends: 7061 [2018-10-23 18:04:54,359 INFO L226 Difference]: Without dead ends: 5118 [2018-10-23 18:04:54,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 18:04:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-23 18:04:54,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-23 18:04:54,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-23 18:04:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-23 18:04:54,471 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 88 [2018-10-23 18:04:54,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:04:54,471 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-23 18:04:54,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:04:54,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-23 18:04:54,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-23 18:04:54,478 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:04:54,479 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:04:54,479 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:04:54,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:04:54,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1398070453, now seen corresponding path program 1 times [2018-10-23 18:04:54,481 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:04:54,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:04:54,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:54,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:54,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:04:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:54,921 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-23 18:04:54,922 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:04:54,922 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 [2018-10-23 18:04:54,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:04:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:04:55,021 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:04:55,084 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-23 18:04:55,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:04:55,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-23 18:04:55,115 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:04:55,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:04:55,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:04:55,116 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 5 states. [2018-10-23 18:05:08,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:05:08,528 INFO L93 Difference]: Finished difference Result 15794 states and 24946 transitions. [2018-10-23 18:05:08,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:05:08,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2018-10-23 18:05:08,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:05:08,586 INFO L225 Difference]: With dead ends: 15794 [2018-10-23 18:05:08,586 INFO L226 Difference]: Without dead ends: 11467 [2018-10-23 18:05:08,595 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:05:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11467 states. [2018-10-23 18:05:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11467 to 11436. [2018-10-23 18:05:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11436 states. [2018-10-23 18:05:08,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 15909 transitions. [2018-10-23 18:05:08,812 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 15909 transitions. Word has length 148 [2018-10-23 18:05:08,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:05:08,813 INFO L481 AbstractCegarLoop]: Abstraction has 11436 states and 15909 transitions. [2018-10-23 18:05:08,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:05:08,813 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 15909 transitions. [2018-10-23 18:05:08,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-23 18:05:08,821 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:05:08,821 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:05:08,821 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:05:08,822 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:05:08,822 INFO L82 PathProgramCache]: Analyzing trace with hash 801482757, now seen corresponding path program 1 times [2018-10-23 18:05:08,822 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:05:08,822 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:05:08,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:08,823 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:08,823 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:05:09,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:05:09,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:05:09,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:05:09,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:05:09,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:05:09,180 INFO L87 Difference]: Start difference. First operand 11436 states and 15909 transitions. Second operand 4 states. [2018-10-23 18:05:19,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:05:19,524 INFO L93 Difference]: Finished difference Result 28418 states and 40800 transitions. [2018-10-23 18:05:19,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:05:19,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 218 [2018-10-23 18:05:19,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:05:19,577 INFO L225 Difference]: With dead ends: 28418 [2018-10-23 18:05:19,577 INFO L226 Difference]: Without dead ends: 17772 [2018-10-23 18:05:19,593 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:05:19,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17772 states. [2018-10-23 18:05:19,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17772 to 17746. [2018-10-23 18:05:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17746 states. [2018-10-23 18:05:19,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17746 states to 17746 states and 23792 transitions. [2018-10-23 18:05:19,855 INFO L78 Accepts]: Start accepts. Automaton has 17746 states and 23792 transitions. Word has length 218 [2018-10-23 18:05:19,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:05:19,856 INFO L481 AbstractCegarLoop]: Abstraction has 17746 states and 23792 transitions. [2018-10-23 18:05:19,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:05:19,856 INFO L276 IsEmpty]: Start isEmpty. Operand 17746 states and 23792 transitions. [2018-10-23 18:05:19,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-23 18:05:19,865 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:05:19,866 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:05:19,868 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:05:19,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:05:19,869 INFO L82 PathProgramCache]: Analyzing trace with hash 809504239, now seen corresponding path program 1 times [2018-10-23 18:05:19,869 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:05:19,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:05:19,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:19,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:19,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:20,280 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-23 18:05:20,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:05:20,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 18:05:20,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:05:20,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:05:20,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:05:20,282 INFO L87 Difference]: Start difference. First operand 17746 states and 23792 transitions. Second operand 3 states. [2018-10-23 18:05:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:05:28,582 INFO L93 Difference]: Finished difference Result 50457 states and 68401 transitions. [2018-10-23 18:05:28,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:05:28,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 308 [2018-10-23 18:05:28,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:05:28,647 INFO L225 Difference]: With dead ends: 50457 [2018-10-23 18:05:28,647 INFO L226 Difference]: Without dead ends: 33501 [2018-10-23 18:05:28,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:05:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33501 states. [2018-10-23 18:05:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33501 to 33500. [2018-10-23 18:05:28,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33500 states. [2018-10-23 18:05:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33500 states to 33500 states and 42101 transitions. [2018-10-23 18:05:29,037 INFO L78 Accepts]: Start accepts. Automaton has 33500 states and 42101 transitions. Word has length 308 [2018-10-23 18:05:29,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:05:29,037 INFO L481 AbstractCegarLoop]: Abstraction has 33500 states and 42101 transitions. [2018-10-23 18:05:29,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:05:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 33500 states and 42101 transitions. [2018-10-23 18:05:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-10-23 18:05:29,052 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:05:29,052 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-10-23 18:05:29,053 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:05:29,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:05:29,053 INFO L82 PathProgramCache]: Analyzing trace with hash 751929461, now seen corresponding path program 1 times [2018-10-23 18:05:29,053 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:05:29,053 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:05:29,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:29,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:29,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:29,491 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2018-10-23 18:05:29,492 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:05:29,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:05:29,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:05:29,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:05:29,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:05:29,494 INFO L87 Difference]: Start difference. First operand 33500 states and 42101 transitions. Second operand 4 states. [2018-10-23 18:05:36,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:05:36,938 INFO L93 Difference]: Finished difference Result 71704 states and 91193 transitions. [2018-10-23 18:05:36,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:05:36,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2018-10-23 18:05:36,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:05:37,012 INFO L225 Difference]: With dead ends: 71704 [2018-10-23 18:05:37,012 INFO L226 Difference]: Without dead ends: 38994 [2018-10-23 18:05:37,050 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:05:37,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38994 states. [2018-10-23 18:05:37,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38994 to 38993. [2018-10-23 18:05:37,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38993 states. [2018-10-23 18:05:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38993 states to 38993 states and 46093 transitions. [2018-10-23 18:05:37,861 INFO L78 Accepts]: Start accepts. Automaton has 38993 states and 46093 transitions. Word has length 339 [2018-10-23 18:05:37,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:05:37,862 INFO L481 AbstractCegarLoop]: Abstraction has 38993 states and 46093 transitions. [2018-10-23 18:05:37,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:05:37,862 INFO L276 IsEmpty]: Start isEmpty. Operand 38993 states and 46093 transitions. [2018-10-23 18:05:37,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-23 18:05:37,884 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:05:37,884 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:05:37,884 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:05:37,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:05:37,885 INFO L82 PathProgramCache]: Analyzing trace with hash 11430192, now seen corresponding path program 1 times [2018-10-23 18:05:37,885 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:05:37,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:05:37,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:37,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:37,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:37,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:38,268 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 364 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-23 18:05:38,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:05:38,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:05:38,269 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 18:05:38,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 18:05:38,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:05:38,270 INFO L87 Difference]: Start difference. First operand 38993 states and 46093 transitions. Second operand 3 states. [2018-10-23 18:05:45,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:05:45,783 INFO L93 Difference]: Finished difference Result 77183 states and 91260 transitions. [2018-10-23 18:05:45,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:05:45,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 412 [2018-10-23 18:05:45,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:05:45,830 INFO L225 Difference]: With dead ends: 77183 [2018-10-23 18:05:45,830 INFO L226 Difference]: Without dead ends: 38980 [2018-10-23 18:05:45,854 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 18:05:45,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38980 states. [2018-10-23 18:05:46,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38980 to 38979. [2018-10-23 18:05:46,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38979 states. [2018-10-23 18:05:46,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38979 states to 38979 states and 43637 transitions. [2018-10-23 18:05:46,261 INFO L78 Accepts]: Start accepts. Automaton has 38979 states and 43637 transitions. Word has length 412 [2018-10-23 18:05:46,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:05:46,262 INFO L481 AbstractCegarLoop]: Abstraction has 38979 states and 43637 transitions. [2018-10-23 18:05:46,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 18:05:46,262 INFO L276 IsEmpty]: Start isEmpty. Operand 38979 states and 43637 transitions. [2018-10-23 18:05:46,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2018-10-23 18:05:46,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:05:46,279 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 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] [2018-10-23 18:05:46,279 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:05:46,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:05:46,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1763756656, now seen corresponding path program 1 times [2018-10-23 18:05:46,280 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:05:46,280 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:05:46,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:46,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:46,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:46,813 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-23 18:05:47,478 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 361 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-23 18:05:47,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:05:47,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:05:47,479 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:05:47,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:05:47,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:05:47,480 INFO L87 Difference]: Start difference. First operand 38979 states and 43637 transitions. Second operand 4 states. [2018-10-23 18:05:54,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:05:54,718 INFO L93 Difference]: Finished difference Result 84261 states and 94220 transitions. [2018-10-23 18:05:54,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:05:54,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 414 [2018-10-23 18:05:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:05:54,776 INFO L225 Difference]: With dead ends: 84261 [2018-10-23 18:05:54,776 INFO L226 Difference]: Without dead ends: 46072 [2018-10-23 18:05:54,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:05:54,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46072 states. [2018-10-23 18:05:55,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46072 to 44495. [2018-10-23 18:05:55,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44495 states. [2018-10-23 18:05:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44495 states to 44495 states and 49698 transitions. [2018-10-23 18:05:55,296 INFO L78 Accepts]: Start accepts. Automaton has 44495 states and 49698 transitions. Word has length 414 [2018-10-23 18:05:55,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:05:55,296 INFO L481 AbstractCegarLoop]: Abstraction has 44495 states and 49698 transitions. [2018-10-23 18:05:55,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:05:55,297 INFO L276 IsEmpty]: Start isEmpty. Operand 44495 states and 49698 transitions. [2018-10-23 18:05:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2018-10-23 18:05:55,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:05:55,317 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 18:05:55,317 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:05:55,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:05:55,318 INFO L82 PathProgramCache]: Analyzing trace with hash 963684070, now seen corresponding path program 1 times [2018-10-23 18:05:55,318 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:05:55,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:05:55,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:55,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:55,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:05:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 256 proven. 91 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-23 18:05:55,710 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:05:55,711 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 [2018-10-23 18:05:55,722 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:05:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:05:55,863 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:05:56,691 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 347 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-10-23 18:05:56,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:05:56,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:05:56,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:05:56,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:05:56,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:05:56,714 INFO L87 Difference]: Start difference. First operand 44495 states and 49698 transitions. Second operand 7 states. [2018-10-23 18:06:24,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:24,247 INFO L93 Difference]: Finished difference Result 182888 states and 202880 transitions. [2018-10-23 18:06:24,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 18:06:24,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 442 [2018-10-23 18:06:24,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:24,384 INFO L225 Difference]: With dead ends: 182888 [2018-10-23 18:06:24,384 INFO L226 Difference]: Without dead ends: 112285 [2018-10-23 18:06:24,437 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2018-10-23 18:06:24,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112285 states. [2018-10-23 18:06:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112285 to 102014. [2018-10-23 18:06:25,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102014 states. [2018-10-23 18:06:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102014 states to 102014 states and 108393 transitions. [2018-10-23 18:06:25,407 INFO L78 Accepts]: Start accepts. Automaton has 102014 states and 108393 transitions. Word has length 442 [2018-10-23 18:06:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:25,408 INFO L481 AbstractCegarLoop]: Abstraction has 102014 states and 108393 transitions. [2018-10-23 18:06:25,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 18:06:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 102014 states and 108393 transitions. [2018-10-23 18:06:25,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-10-23 18:06:25,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:25,457 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-23 18:06:25,457 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:25,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:25,457 INFO L82 PathProgramCache]: Analyzing trace with hash -196318809, now seen corresponding path program 1 times [2018-10-23 18:06:25,458 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:25,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:25,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:25,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:25,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:25,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:26,353 INFO L134 CoverageAnalysis]: Checked inductivity of 671 backedges. 530 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-10-23 18:06:26,354 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:06:26,354 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 18:06:26,355 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:06:26,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:06:26,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:06:26,355 INFO L87 Difference]: Start difference. First operand 102014 states and 108393 transitions. Second operand 5 states. [2018-10-23 18:06:45,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:06:45,098 INFO L93 Difference]: Finished difference Result 342967 states and 364439 transitions. [2018-10-23 18:06:45,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:06:45,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 661 [2018-10-23 18:06:45,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:06:45,346 INFO L225 Difference]: With dead ends: 342967 [2018-10-23 18:06:45,346 INFO L226 Difference]: Without dead ends: 240162 [2018-10-23 18:06:45,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:06:45,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240162 states. [2018-10-23 18:06:47,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240162 to 221867. [2018-10-23 18:06:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221867 states. [2018-10-23 18:06:47,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221867 states to 221867 states and 234067 transitions. [2018-10-23 18:06:47,316 INFO L78 Accepts]: Start accepts. Automaton has 221867 states and 234067 transitions. Word has length 661 [2018-10-23 18:06:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:06:47,317 INFO L481 AbstractCegarLoop]: Abstraction has 221867 states and 234067 transitions. [2018-10-23 18:06:47,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:06:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 221867 states and 234067 transitions. [2018-10-23 18:06:47,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 674 [2018-10-23 18:06:47,352 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:06:47,353 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-23 18:06:47,353 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:06:47,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:06:47,353 INFO L82 PathProgramCache]: Analyzing trace with hash -556927638, now seen corresponding path program 1 times [2018-10-23 18:06:47,354 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:06:47,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:06:47,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:47,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:47,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:06:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:48,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 860 proven. 16 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2018-10-23 18:06:48,961 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:06:48,961 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 [2018-10-23 18:06:48,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:06:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:06:49,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:06:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 860 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2018-10-23 18:06:49,508 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:06:49,508 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 18:06:49,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 18:06:49,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 18:06:49,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:06:49,511 INFO L87 Difference]: Start difference. First operand 221867 states and 234067 transitions. Second operand 5 states. [2018-10-23 18:07:03,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:07:03,488 INFO L93 Difference]: Finished difference Result 442961 states and 467259 transitions. [2018-10-23 18:07:03,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 18:07:03,488 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 673 [2018-10-23 18:07:03,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:07:03,744 INFO L225 Difference]: With dead ends: 442961 [2018-10-23 18:07:03,744 INFO L226 Difference]: Without dead ends: 218725 [2018-10-23 18:07:03,849 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 677 GetRequests, 673 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 18:07:03,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218725 states. [2018-10-23 18:07:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218725 to 204500. [2018-10-23 18:07:06,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204500 states. [2018-10-23 18:07:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204500 states to 204500 states and 211409 transitions. [2018-10-23 18:07:06,698 INFO L78 Accepts]: Start accepts. Automaton has 204500 states and 211409 transitions. Word has length 673 [2018-10-23 18:07:06,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:07:06,699 INFO L481 AbstractCegarLoop]: Abstraction has 204500 states and 211409 transitions. [2018-10-23 18:07:06,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 18:07:06,699 INFO L276 IsEmpty]: Start isEmpty. Operand 204500 states and 211409 transitions. [2018-10-23 18:07:06,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2018-10-23 18:07:06,722 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:07:06,723 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 6, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:07:06,723 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:07:06,723 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:07:06,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1573382673, now seen corresponding path program 1 times [2018-10-23 18:07:06,724 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:07:06,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:07:06,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:06,725 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:06,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:07:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:07,489 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 18:07:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 282 proven. 730 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2018-10-23 18:07:10,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:07:10,387 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 [2018-10-23 18:07:10,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:07:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:07:10,572 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:07:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1373 backedges. 782 proven. 0 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2018-10-23 18:07:12,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:07:12,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 17 [2018-10-23 18:07:12,862 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-23 18:07:12,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-23 18:07:12,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2018-10-23 18:07:12,863 INFO L87 Difference]: Start difference. First operand 204500 states and 211409 transitions. Second operand 18 states. Received shutdown request... [2018-10-23 18:07:51,712 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2018-10-23 18:07:51,712 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:07:51,718 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:07:51,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:07:51 BoogieIcfgContainer [2018-10-23 18:07:51,718 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:07:51,719 INFO L168 Benchmark]: Toolchain (without parser) took 233444.97 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -388.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 18:07:51,720 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. [2018-10-23 18:07:51,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2341.83 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:07:51,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 871.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.7 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 83.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:07:51,722 INFO L168 Benchmark]: Boogie Preprocessor took 621.88 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: 68.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:07:51,723 INFO L168 Benchmark]: RCFGBuilder took 17278.76 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 213.9 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 49.8 MB). Peak memory consumption was 578.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:07:51,724 INFO L168 Benchmark]: TraceAbstraction took 212324.12 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.1 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 264.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 18:07:51,729 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 2341.83 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: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 871.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.7 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 83.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 621.88 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: 68.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17278.76 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 213.9 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 49.8 MB). Peak memory consumption was 578.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212324.12 ms. Allocated memory was 2.6 GB in the beginning and 3.7 GB in the end (delta: 1.1 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 264.2 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 75). Cancelled while BasicCegarLoop was constructing difference of abstraction (204500states) and FLOYD_HOARE automaton (currently 35 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (186971 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 212.2s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 187.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10261 SDtfs, 52649 SDslu, 4500 SDs, 0 SdLazy, 94693 SolverSat, 16956 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 154.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2069 GetRequests, 1985 SyntacticMatches, 8 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 447 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221867occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 8.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 45274 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 6416 NumberOfCodeBlocks, 6416 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 6400 ConstructedInterpolants, 90 QuantifiedInterpolants, 14485825 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2571 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 16 InterpolantComputations, 12 PerfectInterpolantSequences, 7112/7953 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown