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_label32_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:10:39,837 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:10:39,839 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:10:39,851 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:10:39,852 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:10:39,853 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:10:39,854 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:10:39,856 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:10:39,858 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:10:39,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:10:39,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:10:39,860 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:10:39,861 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:10:39,862 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:10:39,863 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:10:39,864 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:10:39,865 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:10:39,867 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:10:39,869 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:10:39,870 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:10:39,872 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:10:39,873 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:10:39,875 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:10:39,876 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:10:39,876 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:10:39,877 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:10:39,878 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:10:39,879 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:10:39,880 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:10:39,881 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:10:39,881 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:10:39,882 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 14:10:39,882 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 14:10:39,883 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 14:10:39,884 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 14:10:39,884 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 14:10:39,885 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 14:10:39,900 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:10:39,900 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:10:39,901 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:10:39,902 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:10:39,902 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:10:39,902 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:10:39,903 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:10:39,903 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:10:39,903 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:10:39,903 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:10:39,903 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:10:39,904 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:10:39,904 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:10:39,904 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:10:39,904 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:10:39,904 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:10:39,905 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:10:39,905 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:10:39,905 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:10:39,905 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:10:39,905 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:10:39,906 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:10:39,906 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:10:39,906 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:10:39,906 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:10:39,906 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:10:39,907 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:10:39,907 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:10:39,951 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:10:39,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:10:39,969 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:10:39,970 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:10:39,971 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:10:39,972 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label32_false-unreach-call.c [2018-10-24 14:10:40,033 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c8916b80/a6db885940074c05b3f532d5cc2aca29/FLAG7c0ac9b4e [2018-10-24 14:10:40,872 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:10:40,873 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label32_false-unreach-call.c [2018-10-24 14:10:40,916 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c8916b80/a6db885940074c05b3f532d5cc2aca29/FLAG7c0ac9b4e [2018-10-24 14:10:40,933 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7c8916b80/a6db885940074c05b3f532d5cc2aca29 [2018-10-24 14:10:40,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:10:40,949 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:10:40,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:10:40,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:10:40,955 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:10:40,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:10:40" (1/1) ... [2018-10-24 14:10:40,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:40, skipping insertion in model container [2018-10-24 14:10:40,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:10:40" (1/1) ... [2018-10-24 14:10:40,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:10:41,185 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:10:42,750 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:10:42,756 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:10:43,420 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:10:43,463 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:10:43,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:43 WrapperNode [2018-10-24 14:10:43,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:10:43,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:10:43,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:10:43,470 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:10:43,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:43" (1/1) ... [2018-10-24 14:10:43,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:43" (1/1) ... [2018-10-24 14:10:44,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:10:44,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:10:44,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:10:44,353 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:10:44,365 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:43" (1/1) ... [2018-10-24 14:10:44,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:43" (1/1) ... [2018-10-24 14:10:44,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:43" (1/1) ... [2018-10-24 14:10:44,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:43" (1/1) ... [2018-10-24 14:10:44,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:43" (1/1) ... [2018-10-24 14:10:44,712 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:43" (1/1) ... [2018-10-24 14:10:44,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:43" (1/1) ... [2018-10-24 14:10:44,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:10:44,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:10:44,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:10:44,879 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:10:44,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:10:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:10:44,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:10:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:11:03,241 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:11:03,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:11:03 BoogieIcfgContainer [2018-10-24 14:11:03,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:11:03,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:11:03,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:11:03,246 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:11:03,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:10:40" (1/3) ... [2018-10-24 14:11:03,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba2a8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:11:03, skipping insertion in model container [2018-10-24 14:11:03,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:10:43" (2/3) ... [2018-10-24 14:11:03,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba2a8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:11:03, skipping insertion in model container [2018-10-24 14:11:03,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:11:03" (3/3) ... [2018-10-24 14:11:03,251 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label32_false-unreach-call.c [2018-10-24 14:11:03,261 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:11:03,273 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:11:03,292 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:11:03,339 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:11:03,340 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:11:03,340 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:11:03,340 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:11:03,340 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:11:03,340 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:11:03,341 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:11:03,341 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:11:03,341 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:11:03,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 14:11:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-10-24 14:11:03,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:03,397 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:11:03,400 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:03,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:03,406 INFO L82 PathProgramCache]: Analyzing trace with hash 384191218, now seen corresponding path program 1 times [2018-10-24 14:11:03,408 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:03,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:03,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:03,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:03,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:03,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:11:03,619 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:03,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:11:03,623 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:11:03,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:11:03,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:11:03,639 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 3 states. [2018-10-24 14:11:13,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:13,472 INFO L93 Difference]: Finished difference Result 3038 states and 5646 transitions. [2018-10-24 14:11:13,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:11:13,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-10-24 14:11:13,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:13,515 INFO L225 Difference]: With dead ends: 3038 [2018-10-24 14:11:13,516 INFO L226 Difference]: Without dead ends: 1935 [2018-10-24 14:11:13,524 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:11:13,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2018-10-24 14:11:13,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1921. [2018-10-24 14:11:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1921 states. [2018-10-24 14:11:13,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 3004 transitions. [2018-10-24 14:11:13,680 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 3004 transitions. Word has length 9 [2018-10-24 14:11:13,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:13,680 INFO L481 AbstractCegarLoop]: Abstraction has 1921 states and 3004 transitions. [2018-10-24 14:11:13,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:11:13,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 3004 transitions. [2018-10-24 14:11:13,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-10-24 14:11:13,685 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:13,685 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:11:13,686 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:13,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:13,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1950399385, now seen corresponding path program 1 times [2018-10-24 14:11:13,687 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:13,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:13,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:13,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:13,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:11:14,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:14,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:14,658 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:11:14,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:11:14,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:11:14,659 INFO L87 Difference]: Start difference. First operand 1921 states and 3004 transitions. Second operand 5 states. [2018-10-24 14:11:14,896 WARN L179 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 14:11:32,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:32,833 INFO L93 Difference]: Finished difference Result 7027 states and 10524 transitions. [2018-10-24 14:11:32,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:11:32,834 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 82 [2018-10-24 14:11:32,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:32,860 INFO L225 Difference]: With dead ends: 7027 [2018-10-24 14:11:32,861 INFO L226 Difference]: Without dead ends: 5108 [2018-10-24 14:11:32,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:11:32,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5108 states. [2018-10-24 14:11:32,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5108 to 5107. [2018-10-24 14:11:32,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5107 states. [2018-10-24 14:11:32,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5107 states to 5107 states and 6806 transitions. [2018-10-24 14:11:32,968 INFO L78 Accepts]: Start accepts. Automaton has 5107 states and 6806 transitions. Word has length 82 [2018-10-24 14:11:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:32,969 INFO L481 AbstractCegarLoop]: Abstraction has 5107 states and 6806 transitions. [2018-10-24 14:11:32,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:11:32,969 INFO L276 IsEmpty]: Start isEmpty. Operand 5107 states and 6806 transitions. [2018-10-24 14:11:32,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 14:11:32,972 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:32,973 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:11:32,973 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:32,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:32,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1003534927, now seen corresponding path program 1 times [2018-10-24 14:11:32,974 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:32,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:32,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:32,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:32,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:33,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:11:33,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:33,194 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:11:33,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:11:33,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:11:33,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:11:33,195 INFO L87 Difference]: Start difference. First operand 5107 states and 6806 transitions. Second operand 5 states. [2018-10-24 14:11:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:52,598 INFO L93 Difference]: Finished difference Result 19981 states and 28104 transitions. [2018-10-24 14:11:52,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:11:52,603 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 106 [2018-10-24 14:11:52,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:52,678 INFO L225 Difference]: With dead ends: 19981 [2018-10-24 14:11:52,679 INFO L226 Difference]: Without dead ends: 15664 [2018-10-24 14:11:52,690 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:11:52,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15664 states. [2018-10-24 14:11:53,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15664 to 15507. [2018-10-24 14:11:53,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15507 states. [2018-10-24 14:11:53,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15507 states to 15507 states and 20533 transitions. [2018-10-24 14:11:53,223 INFO L78 Accepts]: Start accepts. Automaton has 15507 states and 20533 transitions. Word has length 106 [2018-10-24 14:11:53,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:53,224 INFO L481 AbstractCegarLoop]: Abstraction has 15507 states and 20533 transitions. [2018-10-24 14:11:53,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:11:53,224 INFO L276 IsEmpty]: Start isEmpty. Operand 15507 states and 20533 transitions. [2018-10-24 14:11:53,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-10-24 14:11:53,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:53,238 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:11:53,238 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:53,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:53,241 INFO L82 PathProgramCache]: Analyzing trace with hash -152268787, now seen corresponding path program 1 times [2018-10-24 14:11:53,242 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:53,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:53,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:53,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:53,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:53,578 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 13 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-24 14:11:53,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:11:53,578 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:11:53,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:53,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:11:53,759 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:11:53,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:11:53,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 14:11:53,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:11:53,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:11:53,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:11:53,794 INFO L87 Difference]: Start difference. First operand 15507 states and 20533 transitions. Second operand 5 states. [2018-10-24 14:12:10,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:10,200 INFO L93 Difference]: Finished difference Result 67327 states and 91193 transitions. [2018-10-24 14:12:10,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:12:10,201 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2018-10-24 14:12:10,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:10,333 INFO L225 Difference]: With dead ends: 67327 [2018-10-24 14:12:10,334 INFO L226 Difference]: Without dead ends: 52610 [2018-10-24 14:12:10,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:12:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52610 states. [2018-10-24 14:12:11,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52610 to 38362. [2018-10-24 14:12:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38362 states. [2018-10-24 14:12:11,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38362 states to 38362 states and 48835 transitions. [2018-10-24 14:12:11,198 INFO L78 Accepts]: Start accepts. Automaton has 38362 states and 48835 transitions. Word has length 174 [2018-10-24 14:12:11,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:11,199 INFO L481 AbstractCegarLoop]: Abstraction has 38362 states and 48835 transitions. [2018-10-24 14:12:11,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:12:11,199 INFO L276 IsEmpty]: Start isEmpty. Operand 38362 states and 48835 transitions. [2018-10-24 14:12:11,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-24 14:12:11,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:11,205 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:12:11,205 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:11,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:11,206 INFO L82 PathProgramCache]: Analyzing trace with hash -4337762, now seen corresponding path program 1 times [2018-10-24 14:12:11,206 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:11,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:11,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:11,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:11,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:11,516 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 14:12:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-10-24 14:12:11,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:12:11,557 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) [2018-10-24 14:12:11,571 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:12:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:11,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:12:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:12:11,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:12:11,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 14:12:11,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:12:11,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:12:11,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:11,704 INFO L87 Difference]: Start difference. First operand 38362 states and 48835 transitions. Second operand 4 states. [2018-10-24 14:12:26,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:26,098 INFO L93 Difference]: Finished difference Result 113031 states and 144256 transitions. [2018-10-24 14:12:26,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:12:26,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2018-10-24 14:12:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:26,213 INFO L225 Difference]: With dead ends: 113031 [2018-10-24 14:12:26,214 INFO L226 Difference]: Without dead ends: 75459 [2018-10-24 14:12:26,266 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:26,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75459 states. [2018-10-24 14:12:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75459 to 58848. [2018-10-24 14:12:27,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58848 states. [2018-10-24 14:12:27,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58848 states to 58848 states and 72190 transitions. [2018-10-24 14:12:27,132 INFO L78 Accepts]: Start accepts. Automaton has 58848 states and 72190 transitions. Word has length 179 [2018-10-24 14:12:27,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:27,133 INFO L481 AbstractCegarLoop]: Abstraction has 58848 states and 72190 transitions. [2018-10-24 14:12:27,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:12:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand 58848 states and 72190 transitions. [2018-10-24 14:12:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-24 14:12:27,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:27,138 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:12:27,138 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:27,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:27,139 INFO L82 PathProgramCache]: Analyzing trace with hash -895921421, now seen corresponding path program 1 times [2018-10-24 14:12:27,139 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:27,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:27,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:27,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:27,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:27,366 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-10-24 14:12:27,367 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:27,367 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:12:27,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:12:27,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:12:27,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:12:27,368 INFO L87 Difference]: Start difference. First operand 58848 states and 72190 transitions. Second operand 3 states. [2018-10-24 14:12:34,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:34,294 INFO L93 Difference]: Finished difference Result 160239 states and 197828 transitions. [2018-10-24 14:12:34,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:12:34,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2018-10-24 14:12:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:34,455 INFO L225 Difference]: With dead ends: 160239 [2018-10-24 14:12:34,455 INFO L226 Difference]: Without dead ends: 102181 [2018-10-24 14:12:34,509 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 [2018-10-24 14:12:34,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102181 states. [2018-10-24 14:12:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102181 to 102178. [2018-10-24 14:12:35,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102178 states. [2018-10-24 14:12:35,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102178 states to 102178 states and 119362 transitions. [2018-10-24 14:12:35,734 INFO L78 Accepts]: Start accepts. Automaton has 102178 states and 119362 transitions. Word has length 208 [2018-10-24 14:12:35,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:35,735 INFO L481 AbstractCegarLoop]: Abstraction has 102178 states and 119362 transitions. [2018-10-24 14:12:35,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:12:35,735 INFO L276 IsEmpty]: Start isEmpty. Operand 102178 states and 119362 transitions. [2018-10-24 14:12:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-24 14:12:35,738 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:35,739 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:12:35,739 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:35,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:35,739 INFO L82 PathProgramCache]: Analyzing trace with hash 642125967, now seen corresponding path program 1 times [2018-10-24 14:12:35,740 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:35,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:35,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:35,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:35,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:35,968 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-24 14:12:35,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:35,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:12:35,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:12:35,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:12:35,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:35,970 INFO L87 Difference]: Start difference. First operand 102178 states and 119362 transitions. Second operand 4 states. [2018-10-24 14:12:49,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:49,448 INFO L93 Difference]: Finished difference Result 246939 states and 290693 transitions. [2018-10-24 14:12:49,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:12:49,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 223 [2018-10-24 14:12:49,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:49,643 INFO L225 Difference]: With dead ends: 246939 [2018-10-24 14:12:49,643 INFO L226 Difference]: Without dead ends: 145551 [2018-10-24 14:12:49,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:49,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145551 states. [2018-10-24 14:12:50,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145551 to 143155. [2018-10-24 14:12:50,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143155 states. [2018-10-24 14:12:51,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143155 states to 143155 states and 162549 transitions. [2018-10-24 14:12:51,080 INFO L78 Accepts]: Start accepts. Automaton has 143155 states and 162549 transitions. Word has length 223 [2018-10-24 14:12:51,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:51,081 INFO L481 AbstractCegarLoop]: Abstraction has 143155 states and 162549 transitions. [2018-10-24 14:12:51,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:12:51,081 INFO L276 IsEmpty]: Start isEmpty. Operand 143155 states and 162549 transitions. [2018-10-24 14:12:51,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2018-10-24 14:12:51,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:51,090 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:12:51,090 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:51,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:51,091 INFO L82 PathProgramCache]: Analyzing trace with hash 27034144, now seen corresponding path program 1 times [2018-10-24 14:12:51,091 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:51,091 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:51,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:51,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:51,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:51,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:12:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-24 14:12:51,319 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:51,319 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:12:51,320 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:12:51,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:12:51,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:12:51,321 INFO L87 Difference]: Start difference. First operand 143155 states and 162549 transitions. Second operand 3 states. [2018-10-24 14:12:59,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:59,658 INFO L93 Difference]: Finished difference Result 327289 states and 375927 transitions. [2018-10-24 14:12:59,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:12:59,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 326 [2018-10-24 14:12:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:59,952 INFO L225 Difference]: With dead ends: 327289 [2018-10-24 14:12:59,952 INFO L226 Difference]: Without dead ends: 184924 [2018-10-24 14:13:00,052 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 [2018-10-24 14:13:00,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184924 states. [2018-10-24 14:13:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184924 to 183341. [2018-10-24 14:13:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183341 states. [2018-10-24 14:13:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183341 states to 183341 states and 204345 transitions. [2018-10-24 14:13:01,895 INFO L78 Accepts]: Start accepts. Automaton has 183341 states and 204345 transitions. Word has length 326 [2018-10-24 14:13:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:01,896 INFO L481 AbstractCegarLoop]: Abstraction has 183341 states and 204345 transitions. [2018-10-24 14:13:01,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:13:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 183341 states and 204345 transitions. [2018-10-24 14:13:01,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2018-10-24 14:13:01,905 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:01,906 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:13:01,906 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:01,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:01,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1034580145, now seen corresponding path program 1 times [2018-10-24 14:13:01,906 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:01,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:01,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:01,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:01,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:03,119 INFO L134 CoverageAnalysis]: Checked inductivity of 521 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 494 trivial. 0 not checked. [2018-10-24 14:13:03,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:03,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:13:03,121 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:13:03,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:13:03,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:13:03,121 INFO L87 Difference]: Start difference. First operand 183341 states and 204345 transitions. Second operand 3 states. [2018-10-24 14:13:09,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:09,549 INFO L93 Difference]: Finished difference Result 365100 states and 407059 transitions. [2018-10-24 14:13:09,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:13:09,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 365 [2018-10-24 14:13:09,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:09,812 INFO L225 Difference]: With dead ends: 365100 [2018-10-24 14:13:09,812 INFO L226 Difference]: Without dead ends: 182549 [2018-10-24 14:13:09,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:13:10,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182549 states. [2018-10-24 14:13:12,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182549 to 180182. [2018-10-24 14:13:12,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180182 states. [2018-10-24 14:13:12,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180182 states to 180182 states and 195459 transitions. [2018-10-24 14:13:12,863 INFO L78 Accepts]: Start accepts. Automaton has 180182 states and 195459 transitions. Word has length 365 [2018-10-24 14:13:12,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:12,864 INFO L481 AbstractCegarLoop]: Abstraction has 180182 states and 195459 transitions. [2018-10-24 14:13:12,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:13:12,864 INFO L276 IsEmpty]: Start isEmpty. Operand 180182 states and 195459 transitions. [2018-10-24 14:13:12,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2018-10-24 14:13:12,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:12,877 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:13:12,878 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:12,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:12,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1130400858, now seen corresponding path program 1 times [2018-10-24 14:13:12,878 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:12,878 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:12,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:12,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:12,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:13,267 INFO L134 CoverageAnalysis]: Checked inductivity of 509 backedges. 429 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-10-24 14:13:13,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:13,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:13:13,268 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:13,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:13,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:13,269 INFO L87 Difference]: Start difference. First operand 180182 states and 195459 transitions. Second operand 4 states. [2018-10-24 14:13:26,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:26,357 INFO L93 Difference]: Finished difference Result 376118 states and 408256 transitions. [2018-10-24 14:13:26,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:13:26,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 404 [2018-10-24 14:13:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:26,544 INFO L225 Difference]: With dead ends: 376118 [2018-10-24 14:13:26,544 INFO L226 Difference]: Without dead ends: 169852 [2018-10-24 14:13:26,600 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:26,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169852 states. [2018-10-24 14:13:27,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169852 to 152515. [2018-10-24 14:13:27,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152515 states. [2018-10-24 14:13:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152515 states to 152515 states and 163405 transitions. [2018-10-24 14:13:27,960 INFO L78 Accepts]: Start accepts. Automaton has 152515 states and 163405 transitions. Word has length 404 [2018-10-24 14:13:27,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:27,961 INFO L481 AbstractCegarLoop]: Abstraction has 152515 states and 163405 transitions. [2018-10-24 14:13:27,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:13:27,961 INFO L276 IsEmpty]: Start isEmpty. Operand 152515 states and 163405 transitions. [2018-10-24 14:13:27,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2018-10-24 14:13:27,969 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:27,970 INFO L375 BasicCegarLoop]: trace histogram [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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-24 14:13:27,970 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:27,970 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:27,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1769500804, now seen corresponding path program 1 times [2018-10-24 14:13:27,971 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:27,971 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:27,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:27,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:27,972 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 829 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 795 trivial. 0 not checked. [2018-10-24 14:13:28,343 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:28,343 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:13:28,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:28,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:28,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:28,344 INFO L87 Difference]: Start difference. First operand 152515 states and 163405 transitions. Second operand 4 states. [2018-10-24 14:13:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:40,573 INFO L93 Difference]: Finished difference Result 333414 states and 359158 transitions. [2018-10-24 14:13:40,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:13:40,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 465 [2018-10-24 14:13:40,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:40,773 INFO L225 Difference]: With dead ends: 333414 [2018-10-24 14:13:40,774 INFO L226 Difference]: Without dead ends: 181689 [2018-10-24 14:13:40,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:40,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181689 states. [2018-10-24 14:13:43,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181689 to 181666. [2018-10-24 14:13:43,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181666 states. [2018-10-24 14:13:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181666 states to 181666 states and 192331 transitions. [2018-10-24 14:13:43,678 INFO L78 Accepts]: Start accepts. Automaton has 181666 states and 192331 transitions. Word has length 465 [2018-10-24 14:13:43,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:13:43,678 INFO L481 AbstractCegarLoop]: Abstraction has 181666 states and 192331 transitions. [2018-10-24 14:13:43,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:13:43,679 INFO L276 IsEmpty]: Start isEmpty. Operand 181666 states and 192331 transitions. [2018-10-24 14:13:43,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1142 [2018-10-24 14:13:43,772 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:13:43,773 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:13:43,773 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:13:43,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:13:43,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1687746051, now seen corresponding path program 1 times [2018-10-24 14:13:43,774 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:13:43,774 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:13:43,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:43,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:13:43,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:13:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:13:44,525 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-10-24 14:13:50,459 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 662 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-10-24 14:13:50,459 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:13:50,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:13:50,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:13:50,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:13:50,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:50,461 INFO L87 Difference]: Start difference. First operand 181666 states and 192331 transitions. Second operand 4 states. [2018-10-24 14:13:59,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:13:59,639 INFO L93 Difference]: Finished difference Result 355464 states and 376456 transitions. [2018-10-24 14:13:59,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:13:59,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1141 [2018-10-24 14:13:59,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:13:59,819 INFO L225 Difference]: With dead ends: 355464 [2018-10-24 14:13:59,819 INFO L226 Difference]: Without dead ends: 174588 [2018-10-24 14:13:59,883 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:13:59,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174588 states. [2018-10-24 14:14:01,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174588 to 173763. [2018-10-24 14:14:01,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173763 states. [2018-10-24 14:14:01,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173763 states to 173763 states and 180360 transitions. [2018-10-24 14:14:01,662 INFO L78 Accepts]: Start accepts. Automaton has 173763 states and 180360 transitions. Word has length 1141 [2018-10-24 14:14:01,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:01,663 INFO L481 AbstractCegarLoop]: Abstraction has 173763 states and 180360 transitions. [2018-10-24 14:14:01,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:14:01,663 INFO L276 IsEmpty]: Start isEmpty. Operand 173763 states and 180360 transitions. [2018-10-24 14:14:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1173 [2018-10-24 14:14:01,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:01,751 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:14:01,751 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:01,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:01,752 INFO L82 PathProgramCache]: Analyzing trace with hash 2125039624, now seen corresponding path program 1 times [2018-10-24 14:14:01,752 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:01,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:01,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:01,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:01,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:03,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1033 backedges. 751 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-10-24 14:14:03,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:14:03,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:14:03,442 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:14:03,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:14:03,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:03,442 INFO L87 Difference]: Start difference. First operand 173763 states and 180360 transitions. Second operand 4 states. [2018-10-24 14:14:15,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:14:15,846 INFO L93 Difference]: Finished difference Result 414601 states and 430193 transitions. [2018-10-24 14:14:15,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:14:15,847 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1172 [2018-10-24 14:14:15,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:14:16,125 INFO L225 Difference]: With dead ends: 414601 [2018-10-24 14:14:16,126 INFO L226 Difference]: Without dead ends: 241628 [2018-10-24 14:14:16,182 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:14:16,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241628 states. [2018-10-24 14:14:18,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241628 to 224203. [2018-10-24 14:14:18,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224203 states. [2018-10-24 14:14:19,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224203 states to 224203 states and 232428 transitions. [2018-10-24 14:14:19,157 INFO L78 Accepts]: Start accepts. Automaton has 224203 states and 232428 transitions. Word has length 1172 [2018-10-24 14:14:19,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:14:19,158 INFO L481 AbstractCegarLoop]: Abstraction has 224203 states and 232428 transitions. [2018-10-24 14:14:19,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:14:19,158 INFO L276 IsEmpty]: Start isEmpty. Operand 224203 states and 232428 transitions. [2018-10-24 14:14:19,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1179 [2018-10-24 14:14:19,234 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:14:19,235 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:14:19,235 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:14:19,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:14:19,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2067897461, now seen corresponding path program 1 times [2018-10-24 14:14:19,236 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:14:19,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:14:19,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:19,237 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:19,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:14:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:20,468 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 7 [2018-10-24 14:14:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 472 proven. 287 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2018-10-24 14:14:21,622 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:14:21,622 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 14:14:21,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:14:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:14:21,964 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:14:23,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1041 backedges. 660 proven. 0 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2018-10-24 14:14:23,895 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:14:23,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-24 14:14:23,899 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 14:14:23,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 14:14:23,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-24 14:14:23,900 INFO L87 Difference]: Start difference. First operand 224203 states and 232428 transitions. Second operand 7 states. Received shutdown request... [2018-10-24 14:14:28,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 14:14:28,896 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:14:28,903 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:14:28,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:14:28 BoogieIcfgContainer [2018-10-24 14:14:28,903 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:14:28,904 INFO L168 Benchmark]: Toolchain (without parser) took 227957.69 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -680.2 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 14:14:28,906 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 14:14:28,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2514.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 14:14:28,907 INFO L168 Benchmark]: Boogie Procedure Inliner took 883.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.6 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -982.9 MB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:14:28,908 INFO L168 Benchmark]: Boogie Preprocessor took 525.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 59.8 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:14:28,909 INFO L168 Benchmark]: RCFGBuilder took 18363.02 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 281.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -56.3 MB). Peak memory consumption was 647.4 MB. Max. memory is 7.1 GB. [2018-10-24 14:14:28,910 INFO L168 Benchmark]: TraceAbstraction took 205660.68 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 45.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 14:14:28,916 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2514.61 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 883.19 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.6 MB). Free memory was 1.1 GB in the beginning and 2.1 GB in the end (delta: -982.9 MB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 525.89 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 59.8 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18363.02 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 281.0 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: -56.3 MB). Peak memory consumption was 647.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205660.68 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 45.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 36]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 36). Cancelled while BasicCegarLoop was constructing difference of abstraction (224203states) and FLOYD_HOARE automaton (currently 8 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (6903 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 205.5s OverallTime, 14 OverallIterations, 6 TraceHistogramMax, 168.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12015 SDtfs, 26476 SDslu, 3351 SDs, 0 SdLazy, 60474 SolverSat, 15513 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 133.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1589 GetRequests, 1546 SyntacticMatches, 8 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224203occurred in iteration=13, 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: 18.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 72990 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.0s InterpolantComputationTime, 7563 NumberOfCodeBlocks, 7563 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 7546 ConstructedInterpolants, 90 QuantifiedInterpolants, 10938247 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1912 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 17 InterpolantComputations, 14 PerfectInterpolantSequences, 6231/6588 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown