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/Problem12_label06_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 17:56:44,215 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 17:56:44,222 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 17:56:44,237 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 17:56:44,237 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 17:56:44,239 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 17:56:44,240 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 17:56:44,242 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 17:56:44,243 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 17:56:44,244 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 17:56:44,245 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 17:56:44,246 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 17:56:44,246 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 17:56:44,247 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 17:56:44,249 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 17:56:44,250 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 17:56:44,250 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 17:56:44,252 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 17:56:44,254 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 17:56:44,256 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 17:56:44,257 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 17:56:44,258 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 17:56:44,263 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 17:56:44,263 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 17:56:44,263 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 17:56:44,264 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 17:56:44,268 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 17:56:44,269 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 17:56:44,273 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 17:56:44,274 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 17:56:44,275 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 17:56:44,275 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 17:56:44,280 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 17:56:44,307 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 17:56:44,307 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 17:56:44,308 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 17:56:44,308 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 17:56:44,309 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 17:56:44,309 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 17:56:44,309 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 17:56:44,310 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 17:56:44,310 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 17:56:44,310 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 17:56:44,310 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 17:56:44,310 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 17:56:44,311 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 17:56:44,311 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 17:56:44,311 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 17:56:44,311 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 17:56:44,311 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 17:56:44,311 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 17:56:44,312 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 17:56:44,312 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 17:56:44,312 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 17:56:44,312 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 17:56:44,312 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 17:56:44,313 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 17:56:44,313 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 17:56:44,313 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 17:56:44,313 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 17:56:44,313 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 17:56:44,380 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 17:56:44,393 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 17:56:44,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 17:56:44,399 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 17:56:44,400 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 17:56:44,401 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label06_false-unreach-call.c [2018-10-23 17:56:44,466 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9b2011673/4df692bf834248ab871d35683ab4ea67/FLAGec76d8ec7 [2018-10-23 17:56:45,213 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 17:56:45,214 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label06_false-unreach-call.c [2018-10-23 17:56:45,247 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9b2011673/4df692bf834248ab871d35683ab4ea67/FLAGec76d8ec7 [2018-10-23 17:56:45,267 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9b2011673/4df692bf834248ab871d35683ab4ea67 [2018-10-23 17:56:45,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 17:56:45,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 17:56:45,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 17:56:45,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 17:56:45,287 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 17:56:45,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:45" (1/1) ... [2018-10-23 17:56:45,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e2e584b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:45, skipping insertion in model container [2018-10-23 17:56:45,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:45" (1/1) ... [2018-10-23 17:56:45,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 17:56:45,462 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 17:56:46,702 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 17:56:46,707 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 17:56:47,419 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 17:56:47,454 INFO L193 MainTranslator]: Completed translation [2018-10-23 17:56:47,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:47 WrapperNode [2018-10-23 17:56:47,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 17:56:47,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 17:56:47,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 17:56:47,457 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 17:56:47,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:47" (1/1) ... [2018-10-23 17:56:47,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:47" (1/1) ... [2018-10-23 17:56:48,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 17:56:48,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 17:56:48,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 17:56:48,073 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 17:56:48,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:47" (1/1) ... [2018-10-23 17:56:48,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:47" (1/1) ... [2018-10-23 17:56:48,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:47" (1/1) ... [2018-10-23 17:56:48,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:47" (1/1) ... [2018-10-23 17:56:48,283 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:47" (1/1) ... [2018-10-23 17:56:48,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:47" (1/1) ... [2018-10-23 17:56:48,420 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:47" (1/1) ... [2018-10-23 17:56:48,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 17:56:48,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 17:56:48,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 17:56:48,534 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 17:56:48,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:47" (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 17:56:48,607 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 17:56:48,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 17:56:48,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 17:56:57,102 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 17:56:57,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:57 BoogieIcfgContainer [2018-10-23 17:56:57,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 17:56:57,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 17:56:57,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 17:56:57,108 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 17:56:57,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:56:45" (1/3) ... [2018-10-23 17:56:57,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@955cd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:57, skipping insertion in model container [2018-10-23 17:56:57,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:47" (2/3) ... [2018-10-23 17:56:57,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@955cd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:57, skipping insertion in model container [2018-10-23 17:56:57,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:57" (3/3) ... [2018-10-23 17:56:57,112 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label06_false-unreach-call.c [2018-10-23 17:56:57,122 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 17:56:57,131 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 17:56:57,149 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 17:56:57,193 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 17:56:57,193 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 17:56:57,193 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 17:56:57,194 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 17:56:57,194 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 17:56:57,194 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 17:56:57,194 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 17:56:57,194 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 17:56:57,194 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 17:56:57,239 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-23 17:56:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-23 17:56:57,250 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:56:57,251 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] [2018-10-23 17:56:57,254 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:56:57,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:56:57,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1155896462, now seen corresponding path program 1 times [2018-10-23 17:56:57,263 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:56:57,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:56:57,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:56:57,321 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:56:57,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:56:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:56:57,661 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 17:56:57,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:56:57,669 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:56:57,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:56:57,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:56:57,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:56:57,693 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-10-23 17:57:09,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:57:09,444 INFO L93 Difference]: Finished difference Result 3162 states and 6150 transitions. [2018-10-23 17:57:09,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:57:09,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-10-23 17:57:09,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:57:09,491 INFO L225 Difference]: With dead ends: 3162 [2018-10-23 17:57:09,491 INFO L226 Difference]: Without dead ends: 2336 [2018-10-23 17:57:09,500 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 17:57:09,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2018-10-23 17:57:09,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2336. [2018-10-23 17:57:09,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2336 states. [2018-10-23 17:57:09,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3769 transitions. [2018-10-23 17:57:09,658 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3769 transitions. Word has length 24 [2018-10-23 17:57:09,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:57:09,659 INFO L481 AbstractCegarLoop]: Abstraction has 2336 states and 3769 transitions. [2018-10-23 17:57:09,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:57:09,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3769 transitions. [2018-10-23 17:57:09,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-23 17:57:09,663 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:57:09,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:57:09,664 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:57:09,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:57:09,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1814416017, now seen corresponding path program 1 times [2018-10-23 17:57:09,665 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:57:09,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:57:09,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:57:09,667 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:57:09,667 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:57:09,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:57:10,133 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-23 17:57:10,382 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-23 17:57:10,614 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:57:10,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:57:10,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 17:57:10,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 17:57:10,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 17:57:10,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-23 17:57:10,618 INFO L87 Difference]: Start difference. First operand 2336 states and 3769 transitions. Second operand 6 states. [2018-10-23 17:57:10,804 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-10-23 17:57:27,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:57:27,997 INFO L93 Difference]: Finished difference Result 9183 states and 14416 transitions. [2018-10-23 17:57:27,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 17:57:27,997 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-10-23 17:57:27,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:57:28,034 INFO L225 Difference]: With dead ends: 9183 [2018-10-23 17:57:28,035 INFO L226 Difference]: Without dead ends: 6849 [2018-10-23 17:57:28,041 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-23 17:57:28,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6849 states. [2018-10-23 17:57:28,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6849 to 6849. [2018-10-23 17:57:28,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6849 states. [2018-10-23 17:57:28,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6849 states to 6849 states and 9754 transitions. [2018-10-23 17:57:28,182 INFO L78 Accepts]: Start accepts. Automaton has 6849 states and 9754 transitions. Word has length 101 [2018-10-23 17:57:28,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:57:28,183 INFO L481 AbstractCegarLoop]: Abstraction has 6849 states and 9754 transitions. [2018-10-23 17:57:28,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 17:57:28,183 INFO L276 IsEmpty]: Start isEmpty. Operand 6849 states and 9754 transitions. [2018-10-23 17:57:28,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-10-23 17:57:28,193 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:57:28,194 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 17:57:28,194 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:57:28,194 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:57:28,194 INFO L82 PathProgramCache]: Analyzing trace with hash -143512201, now seen corresponding path program 1 times [2018-10-23 17:57:28,194 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:57:28,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:57:28,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:57:28,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:57:28,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:57:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:57:28,716 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-10-23 17:57:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 109 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:57:29,092 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 17:57:29,092 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 17:57:29,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:57:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:57:29,191 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 17:57:29,297 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:57:29,328 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 17:57:29,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-23 17:57:29,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 17:57:29,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 17:57:29,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-10-23 17:57:29,330 INFO L87 Difference]: Start difference. First operand 6849 states and 9754 transitions. Second operand 7 states. [2018-10-23 17:57:48,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:57:48,348 INFO L93 Difference]: Finished difference Result 28768 states and 40519 transitions. [2018-10-23 17:57:48,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 17:57:48,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2018-10-23 17:57:48,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:57:48,443 INFO L225 Difference]: With dead ends: 28768 [2018-10-23 17:57:48,443 INFO L226 Difference]: Without dead ends: 18909 [2018-10-23 17:57:48,459 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 204 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-10-23 17:57:48,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18909 states. [2018-10-23 17:57:48,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18909 to 14367. [2018-10-23 17:57:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14367 states. [2018-10-23 17:57:48,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14367 states to 14367 states and 17896 transitions. [2018-10-23 17:57:48,939 INFO L78 Accepts]: Start accepts. Automaton has 14367 states and 17896 transitions. Word has length 203 [2018-10-23 17:57:48,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:57:48,940 INFO L481 AbstractCegarLoop]: Abstraction has 14367 states and 17896 transitions. [2018-10-23 17:57:48,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 17:57:48,941 INFO L276 IsEmpty]: Start isEmpty. Operand 14367 states and 17896 transitions. [2018-10-23 17:57:48,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2018-10-23 17:57:48,944 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:57:48,944 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-23 17:57:48,944 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:57:48,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:57:48,945 INFO L82 PathProgramCache]: Analyzing trace with hash -1620461169, now seen corresponding path program 1 times [2018-10-23 17:57:48,945 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:57:48,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:57:48,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:57:48,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:57:48,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:57:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:57:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:57:49,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:57:49,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:57:49,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:57:49,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:57:49,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:57:49,456 INFO L87 Difference]: Start difference. First operand 14367 states and 17896 transitions. Second operand 4 states. [2018-10-23 17:58:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:00,703 INFO L93 Difference]: Finished difference Result 49788 states and 63216 transitions. [2018-10-23 17:58:00,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:58:00,704 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 258 [2018-10-23 17:58:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:00,776 INFO L225 Difference]: With dead ends: 49788 [2018-10-23 17:58:00,777 INFO L226 Difference]: Without dead ends: 35423 [2018-10-23 17:58:00,798 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:58:00,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35423 states. [2018-10-23 17:58:01,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35423 to 35423. [2018-10-23 17:58:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35423 states. [2018-10-23 17:58:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35423 states to 35423 states and 43956 transitions. [2018-10-23 17:58:01,331 INFO L78 Accepts]: Start accepts. Automaton has 35423 states and 43956 transitions. Word has length 258 [2018-10-23 17:58:01,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:01,332 INFO L481 AbstractCegarLoop]: Abstraction has 35423 states and 43956 transitions. [2018-10-23 17:58:01,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:58:01,334 INFO L276 IsEmpty]: Start isEmpty. Operand 35423 states and 43956 transitions. [2018-10-23 17:58:01,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-10-23 17:58:01,341 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:01,342 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:58:01,342 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:01,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:01,342 INFO L82 PathProgramCache]: Analyzing trace with hash 401768632, now seen corresponding path program 1 times [2018-10-23 17:58:01,343 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:01,343 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:01,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:01,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:01,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:01,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:02,311 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 11 [2018-10-23 17:58:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 44 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:58:02,521 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 17:58:02,521 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 17:58:02,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:02,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 17:58:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 85 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 17:58:02,923 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 17:58:02,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 7 [2018-10-23 17:58:02,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 17:58:02,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 17:58:02,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-23 17:58:02,925 INFO L87 Difference]: Start difference. First operand 35423 states and 43956 transitions. Second operand 8 states. [2018-10-23 17:58:20,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:20,125 INFO L93 Difference]: Finished difference Result 104684 states and 131693 transitions. [2018-10-23 17:58:20,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 17:58:20,126 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 280 [2018-10-23 17:58:20,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:20,226 INFO L225 Difference]: With dead ends: 104684 [2018-10-23 17:58:20,226 INFO L226 Difference]: Without dead ends: 66253 [2018-10-23 17:58:20,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 279 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2018-10-23 17:58:20,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66253 states. [2018-10-23 17:58:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66253 to 60989. [2018-10-23 17:58:20,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60989 states. [2018-10-23 17:58:21,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60989 states to 60989 states and 74050 transitions. [2018-10-23 17:58:21,028 INFO L78 Accepts]: Start accepts. Automaton has 60989 states and 74050 transitions. Word has length 280 [2018-10-23 17:58:21,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:21,029 INFO L481 AbstractCegarLoop]: Abstraction has 60989 states and 74050 transitions. [2018-10-23 17:58:21,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 17:58:21,029 INFO L276 IsEmpty]: Start isEmpty. Operand 60989 states and 74050 transitions. [2018-10-23 17:58:21,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-10-23 17:58:21,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:21,044 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 17:58:21,044 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:21,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:21,044 INFO L82 PathProgramCache]: Analyzing trace with hash -737792549, now seen corresponding path program 1 times [2018-10-23 17:58:21,045 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:21,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:21,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:21,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:21,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:21,452 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-10-23 17:58:21,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:58:21,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:58:21,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 17:58:21,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 17:58:21,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 17:58:21,454 INFO L87 Difference]: Start difference. First operand 60989 states and 74050 transitions. Second operand 3 states. [2018-10-23 17:58:28,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:28,857 INFO L93 Difference]: Finished difference Result 157320 states and 192508 transitions. [2018-10-23 17:58:28,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 17:58:28,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 303 [2018-10-23 17:58:28,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:28,995 INFO L225 Difference]: With dead ends: 157320 [2018-10-23 17:58:28,995 INFO L226 Difference]: Without dead ends: 97085 [2018-10-23 17:58:29,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 17:58:29,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97085 states. [2018-10-23 17:58:29,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97085 to 97085. [2018-10-23 17:58:29,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97085 states. [2018-10-23 17:58:29,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97085 states to 97085 states and 117470 transitions. [2018-10-23 17:58:29,965 INFO L78 Accepts]: Start accepts. Automaton has 97085 states and 117470 transitions. Word has length 303 [2018-10-23 17:58:29,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:29,965 INFO L481 AbstractCegarLoop]: Abstraction has 97085 states and 117470 transitions. [2018-10-23 17:58:29,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 17:58:29,966 INFO L276 IsEmpty]: Start isEmpty. Operand 97085 states and 117470 transitions. [2018-10-23 17:58:29,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2018-10-23 17:58:29,987 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:29,987 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 17:58:29,988 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:29,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:29,988 INFO L82 PathProgramCache]: Analyzing trace with hash -540361336, now seen corresponding path program 1 times [2018-10-23 17:58:29,988 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:29,988 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:29,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:29,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:29,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:30,472 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 543 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2018-10-23 17:58:30,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:58:30,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 17:58:30,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 17:58:30,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 17:58:30,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 17:58:30,473 INFO L87 Difference]: Start difference. First operand 97085 states and 117470 transitions. Second operand 4 states. [2018-10-23 17:58:38,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:38,841 INFO L93 Difference]: Finished difference Result 232520 states and 280788 transitions. [2018-10-23 17:58:38,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:58:38,841 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2018-10-23 17:58:38,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:39,008 INFO L225 Difference]: With dead ends: 232520 [2018-10-23 17:58:39,009 INFO L226 Difference]: Without dead ends: 136189 [2018-10-23 17:58:39,086 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 17:58:39,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136189 states. [2018-10-23 17:58:40,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136189 to 132429. [2018-10-23 17:58:40,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132429 states. [2018-10-23 17:58:40,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132429 states to 132429 states and 152177 transitions. [2018-10-23 17:58:40,418 INFO L78 Accepts]: Start accepts. Automaton has 132429 states and 152177 transitions. Word has length 465 [2018-10-23 17:58:40,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:40,419 INFO L481 AbstractCegarLoop]: Abstraction has 132429 states and 152177 transitions. [2018-10-23 17:58:40,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 17:58:40,419 INFO L276 IsEmpty]: Start isEmpty. Operand 132429 states and 152177 transitions. [2018-10-23 17:58:40,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-10-23 17:58:40,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:40,437 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 17:58:40,437 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:40,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:40,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1975746954, now seen corresponding path program 1 times [2018-10-23 17:58:40,437 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:40,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:40,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:40,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:40,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 576 proven. 5 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-10-23 17:58:41,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 17:58:41,572 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 17:58:41,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:41,723 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 17:58:41,921 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2018-10-23 17:58:41,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 17:58:41,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 17:58:41,943 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 17:58:41,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 17:58:41,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 17:58:41,944 INFO L87 Difference]: Start difference. First operand 132429 states and 152177 transitions. Second operand 5 states. [2018-10-23 17:58:57,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:58:57,937 INFO L93 Difference]: Finished difference Result 270872 states and 310912 transitions. [2018-10-23 17:58:57,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 17:58:57,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 488 [2018-10-23 17:58:57,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:58:58,094 INFO L225 Difference]: With dead ends: 270872 [2018-10-23 17:58:58,094 INFO L226 Difference]: Without dead ends: 139197 [2018-10-23 17:58:58,147 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 489 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 17:58:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139197 states. [2018-10-23 17:58:59,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139197 to 135437. [2018-10-23 17:58:59,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135437 states. [2018-10-23 17:58:59,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135437 states to 135437 states and 151461 transitions. [2018-10-23 17:58:59,146 INFO L78 Accepts]: Start accepts. Automaton has 135437 states and 151461 transitions. Word has length 488 [2018-10-23 17:58:59,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:58:59,146 INFO L481 AbstractCegarLoop]: Abstraction has 135437 states and 151461 transitions. [2018-10-23 17:58:59,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 17:58:59,146 INFO L276 IsEmpty]: Start isEmpty. Operand 135437 states and 151461 transitions. [2018-10-23 17:58:59,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2018-10-23 17:58:59,157 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:58:59,157 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-10-23 17:58:59,157 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:58:59,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:58:59,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1308409374, now seen corresponding path program 1 times [2018-10-23 17:58:59,158 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:58:59,158 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:58:59,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:59,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:59,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:58:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 501 proven. 15 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-10-23 17:58:59,554 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 17:58:59,554 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 17:58:59,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:58:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:58:59,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 17:58:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2018-10-23 17:58:59,890 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 17:58:59,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-23 17:58:59,891 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 17:58:59,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 17:58:59,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-23 17:58:59,892 INFO L87 Difference]: Start difference. First operand 135437 states and 151461 transitions. Second operand 5 states. [2018-10-23 17:59:08,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:59:08,134 INFO L93 Difference]: Finished difference Result 309976 states and 345953 transitions. [2018-10-23 17:59:08,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 17:59:08,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 496 [2018-10-23 17:59:08,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:59:08,322 INFO L225 Difference]: With dead ends: 309976 [2018-10-23 17:59:08,322 INFO L226 Difference]: Without dead ends: 174540 [2018-10-23 17:59:08,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 496 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 17:59:08,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174540 states. [2018-10-23 17:59:09,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174540 to 166262. [2018-10-23 17:59:09,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166262 states. [2018-10-23 17:59:11,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166262 states to 166262 states and 178605 transitions. [2018-10-23 17:59:11,051 INFO L78 Accepts]: Start accepts. Automaton has 166262 states and 178605 transitions. Word has length 496 [2018-10-23 17:59:11,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:59:11,052 INFO L481 AbstractCegarLoop]: Abstraction has 166262 states and 178605 transitions. [2018-10-23 17:59:11,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 17:59:11,052 INFO L276 IsEmpty]: Start isEmpty. Operand 166262 states and 178605 transitions. [2018-10-23 17:59:11,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2018-10-23 17:59:11,074 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:59:11,074 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:11,075 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:59:11,075 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:59:11,076 INFO L82 PathProgramCache]: Analyzing trace with hash -915367121, now seen corresponding path program 1 times [2018-10-23 17:59:11,076 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:59:11,076 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:59:11,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:11,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:11,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2018-10-23 17:59:11,509 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:59:11,509 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:59:11,510 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 17:59:11,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 17:59:11,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 17:59:11,510 INFO L87 Difference]: Start difference. First operand 166262 states and 178605 transitions. Second operand 3 states. [2018-10-23 17:59:18,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:59:18,732 INFO L93 Difference]: Finished difference Result 367865 states and 395952 transitions. [2018-10-23 17:59:18,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 17:59:18,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 606 [2018-10-23 17:59:18,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:59:18,976 INFO L225 Difference]: With dead ends: 367865 [2018-10-23 17:59:18,977 INFO L226 Difference]: Without dead ends: 202357 [2018-10-23 17:59:19,070 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 17:59:19,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202357 states. [2018-10-23 17:59:21,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202357 to 200853. [2018-10-23 17:59:21,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200853 states. [2018-10-23 17:59:21,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200853 states to 200853 states and 214772 transitions. [2018-10-23 17:59:21,770 INFO L78 Accepts]: Start accepts. Automaton has 200853 states and 214772 transitions. Word has length 606 [2018-10-23 17:59:21,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:59:21,771 INFO L481 AbstractCegarLoop]: Abstraction has 200853 states and 214772 transitions. [2018-10-23 17:59:21,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 17:59:21,771 INFO L276 IsEmpty]: Start isEmpty. Operand 200853 states and 214772 transitions. [2018-10-23 17:59:21,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 846 [2018-10-23 17:59:21,841 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:59:21,842 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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] [2018-10-23 17:59:21,843 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:59:21,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:59:21,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1239426530, now seen corresponding path program 1 times [2018-10-23 17:59:21,843 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:59:21,843 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:59:21,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:21,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:21,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2018-10-23 17:59:23,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 17:59:23,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 17:59:23,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 17:59:23,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 17:59:23,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 17:59:23,938 INFO L87 Difference]: Start difference. First operand 200853 states and 214772 transitions. Second operand 3 states. [2018-10-23 17:59:32,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 17:59:32,063 INFO L93 Difference]: Finished difference Result 394175 states and 421641 transitions. [2018-10-23 17:59:32,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 17:59:32,064 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 845 [2018-10-23 17:59:32,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 17:59:32,285 INFO L225 Difference]: With dead ends: 394175 [2018-10-23 17:59:32,285 INFO L226 Difference]: Without dead ends: 194076 [2018-10-23 17:59:32,388 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 17:59:32,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194076 states. [2018-10-23 17:59:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194076 to 191068. [2018-10-23 17:59:35,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191068 states. [2018-10-23 17:59:35,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191068 states to 191068 states and 200941 transitions. [2018-10-23 17:59:35,284 INFO L78 Accepts]: Start accepts. Automaton has 191068 states and 200941 transitions. Word has length 845 [2018-10-23 17:59:35,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 17:59:35,285 INFO L481 AbstractCegarLoop]: Abstraction has 191068 states and 200941 transitions. [2018-10-23 17:59:35,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 17:59:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 191068 states and 200941 transitions. [2018-10-23 17:59:35,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2018-10-23 17:59:35,365 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 17:59:35,366 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:59:35,366 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 17:59:35,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 17:59:35,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1484498579, now seen corresponding path program 1 times [2018-10-23 17:59:35,367 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 17:59:35,367 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 17:59:35,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:35,368 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:35,368 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 17:59:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:36,292 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-23 17:59:36,567 WARN L179 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-10-23 17:59:39,956 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 591 proven. 196 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 17:59:39,956 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 17:59:39,956 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 [2018-10-23 17:59:39,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 17:59:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 17:59:40,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 17:59:41,736 WARN L179 SmtUtils]: Spent 974.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-10-23 17:59:47,409 INFO L134 CoverageAnalysis]: Checked inductivity of 904 backedges. 591 proven. 196 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-23 17:59:47,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 17:59:47,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 11 [2018-10-23 17:59:47,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-23 17:59:47,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-23 17:59:47,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-10-23 17:59:47,434 INFO L87 Difference]: Start difference. First operand 191068 states and 200941 transitions. Second operand 11 states. [2018-10-23 17:59:48,258 WARN L179 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-10-23 18:00:29,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:00:29,170 INFO L93 Difference]: Finished difference Result 463371 states and 487183 transitions. [2018-10-23 18:00:29,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-23 18:00:29,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 992 [2018-10-23 18:00:29,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:00:29,560 INFO L225 Difference]: With dead ends: 463371 [2018-10-23 18:00:29,560 INFO L226 Difference]: Without dead ends: 273057 [2018-10-23 18:00:29,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1020 GetRequests, 1000 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2018-10-23 18:00:29,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273057 states. [2018-10-23 18:00:32,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273057 to 222661. [2018-10-23 18:00:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222661 states. [2018-10-23 18:00:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222661 states to 222661 states and 232665 transitions. [2018-10-23 18:00:32,270 INFO L78 Accepts]: Start accepts. Automaton has 222661 states and 232665 transitions. Word has length 992 [2018-10-23 18:00:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:00:32,270 INFO L481 AbstractCegarLoop]: Abstraction has 222661 states and 232665 transitions. [2018-10-23 18:00:32,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-23 18:00:32,271 INFO L276 IsEmpty]: Start isEmpty. Operand 222661 states and 232665 transitions. [2018-10-23 18:00:32,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2018-10-23 18:00:32,334 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:00:32,335 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:32,335 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:00:32,336 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:00:32,336 INFO L82 PathProgramCache]: Analyzing trace with hash -1707178874, now seen corresponding path program 1 times [2018-10-23 18:00:32,336 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:00:32,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:00:32,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:00:32,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:00:32,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:00:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:00:32,940 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-10-23 18:00:33,210 WARN L179 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 Received shutdown request... [2018-10-23 18:00:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1223 backedges. 1078 proven. 6 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2018-10-23 18:00:34,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:00:34,982 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:00:34,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:00:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:00:35,247 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:00:35,267 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 18:00:35,469 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 18:00:35,469 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:00:35,475 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:00:35,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:00:35 BoogieIcfgContainer [2018-10-23 18:00:35,475 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:00:35,476 INFO L168 Benchmark]: Toolchain (without parser) took 230195.58 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-10-23 18:00:35,477 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 18:00:35,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2172.64 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-23 18:00:35,478 INFO L168 Benchmark]: Boogie Procedure Inliner took 616.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -982.1 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-23 18:00:35,479 INFO L168 Benchmark]: Boogie Preprocessor took 460.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:00:35,480 INFO L168 Benchmark]: RCFGBuilder took 8569.45 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 212.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -167.3 MB). Peak memory consumption was 630.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:00:35,481 INFO L168 Benchmark]: TraceAbstraction took 218371.14 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: -697.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-23 18:00:35,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2172.64 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: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 616.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 799.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -982.1 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 460.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8569.45 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 212.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -167.3 MB). Peak memory consumption was 630.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218371.14 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: -697.7 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 81). Cancelled while BasicCegarLoop was analyzing trace of length 997 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 7 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 218.2s OverallTime, 13 OverallIterations, 6 TraceHistogramMax, 176.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6858 SDtfs, 47147 SDslu, 1360 SDs, 0 SdLazy, 81440 SolverSat, 19768 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 141.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2552 GetRequests, 2481 SyntacticMatches, 13 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=222661occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 16.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 80512 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 14.1s InterpolantComputationTime, 7520 NumberOfCodeBlocks, 7520 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7503 ConstructedInterpolants, 24 QuantifiedInterpolants, 12973564 SizeOfPredicates, 6 NumberOfNonLiveVariables, 3105 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 17 InterpolantComputations, 10 PerfectInterpolantSequences, 7308/7900 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown