java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/mc91_99.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:22:53,093 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:22:53,095 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:22:53,107 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:22:53,108 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:22:53,109 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:22:53,110 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:22:53,112 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:22:53,113 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:22:53,114 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:22:53,114 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:22:53,115 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:22:53,115 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:22:53,116 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:22:53,119 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:22:53,120 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:22:53,123 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:22:53,125 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:22:53,126 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:22:53,127 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:22:53,128 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:22:53,131 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:22:53,131 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:22:53,131 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:22:53,132 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:22:53,133 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:22:53,134 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:22:53,134 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:22:53,135 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:22:53,136 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:22:53,136 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:22:53,137 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:22:53,137 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:22:53,138 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:22:53,139 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:22:53,139 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:22:53,164 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:22:53,165 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:22:53,165 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:22:53,165 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:22:53,166 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:22:53,166 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:22:53,166 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:22:53,166 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:22:53,167 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:22:53,167 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:22:53,167 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:22:53,167 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:22:53,167 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:22:53,171 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:22:53,171 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:22:53,172 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:22:53,172 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:22:53,172 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:22:53,172 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:22:53,172 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:22:53,172 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:22:53,174 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:22:53,174 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:22:53,222 INFO ]: Repository-Root is: /tmp [2018-06-24 21:22:53,239 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:22:53,246 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:22:53,248 INFO ]: Initializing SmtParser... [2018-06-24 21:22:53,248 INFO ]: SmtParser initialized [2018-06-24 21:22:53,249 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/mc91_99.smt2 [2018-06-24 21:22:53,250 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 21:22:53,341 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/mc91_99.smt2 unknown [2018-06-24 21:22:53,487 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/mc91_99.smt2 [2018-06-24 21:22:53,492 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:22:53,499 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:22:53,499 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:22:53,499 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:22:53,500 INFO ]: ChcToBoogie initialized [2018-06-24 21:22:53,503 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:22:53" (1/1) ... [2018-06-24 21:22:53,555 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:53 Unit [2018-06-24 21:22:53,555 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:22:53,556 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:22:53,556 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:22:53,556 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:22:53,577 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:53" (1/1) ... [2018-06-24 21:22:53,577 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:53" (1/1) ... [2018-06-24 21:22:53,582 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:53" (1/1) ... [2018-06-24 21:22:53,582 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:53" (1/1) ... [2018-06-24 21:22:53,584 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:53" (1/1) ... [2018-06-24 21:22:53,590 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:53" (1/1) ... [2018-06-24 21:22:53,591 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:53" (1/1) ... [2018-06-24 21:22:53,592 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:22:53,592 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:22:53,592 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:22:53,593 INFO ]: RCFGBuilder initialized [2018-06-24 21:22:53,595 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:53" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 21:22:53,607 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:22:53,607 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:22:53,607 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:22:53,607 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:22:53,607 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:22:53,607 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:22:53,821 INFO ]: Using library mode [2018-06-24 21:22:53,821 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:22:53 BoogieIcfgContainer [2018-06-24 21:22:53,821 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:22:53,829 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:22:53,829 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:22:53,830 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:22:53,831 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:22:53" (1/1) ... [2018-06-24 21:22:53,845 INFO ]: Initial Icfg 13 locations, 16 edges [2018-06-24 21:22:53,847 INFO ]: Using Remove infeasible edges [2018-06-24 21:22:53,848 INFO ]: Using Maximize final states [2018-06-24 21:22:53,848 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:22:53,848 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:22:53,851 INFO ]: Using Remove sink states [2018-06-24 21:22:53,852 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:22:53,852 INFO ]: Using Use SBE [2018-06-24 21:22:53,860 INFO ]: SBE split 0 edges [2018-06-24 21:22:53,865 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-24 21:22:53,867 INFO ]: 0 new accepting states [2018-06-24 21:22:53,907 INFO ]: Removed 7 edges and 3 locations by large block encoding [2018-06-24 21:22:53,909 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:22:53,911 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:22:53,911 INFO ]: 0 new accepting states [2018-06-24 21:22:53,911 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:22:53,911 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:22:53,911 INFO ]: Encoded RCFG 8 locations, 10 edges [2018-06-24 21:22:53,912 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:22:53 BasicIcfg [2018-06-24 21:22:53,912 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:22:53,913 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:22:53,913 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:22:53,915 INFO ]: TraceAbstraction initialized [2018-06-24 21:22:53,915 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:22:53" (1/4) ... [2018-06-24 21:22:53,916 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc6517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:22:53, skipping insertion in model container [2018-06-24 21:22:53,916 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:22:53" (2/4) ... [2018-06-24 21:22:53,916 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc6517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:22:53, skipping insertion in model container [2018-06-24 21:22:53,917 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:22:53" (3/4) ... [2018-06-24 21:22:53,917 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dc6517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:22:53, skipping insertion in model container [2018-06-24 21:22:53,917 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:22:53" (4/4) ... [2018-06-24 21:22:53,919 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:22:53,926 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:22:53,933 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:22:53,976 INFO ]: Using default assertion order modulation [2018-06-24 21:22:53,977 INFO ]: Interprodecural is true [2018-06-24 21:22:53,977 INFO ]: Hoare is false [2018-06-24 21:22:53,977 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:22:53,977 INFO ]: Backedges is TWOTRACK [2018-06-24 21:22:53,977 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:22:53,977 INFO ]: Difference is false [2018-06-24 21:22:53,977 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:22:53,977 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:22:53,985 INFO ]: Start isEmpty. Operand 8 states. [2018-06-24 21:22:53,994 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:22:53,994 INFO ]: Found error trace [2018-06-24 21:22:53,995 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:22:53,995 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:54,006 INFO ]: Analyzing trace with hash 33771907, now seen corresponding path program 1 times [2018-06-24 21:22:54,007 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:54,007 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:54,038 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:54,038 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:54,038 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:54,075 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:54,126 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:22:54,128 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:22:54,128 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:22:54,129 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:22:54,140 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:22:54,141 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:22:54,144 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-24 21:22:54,256 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:54,256 INFO ]: Finished difference Result 13 states and 17 transitions. [2018-06-24 21:22:54,256 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:22:54,257 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:22:54,257 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:54,265 INFO ]: With dead ends: 13 [2018-06-24 21:22:54,265 INFO ]: Without dead ends: 13 [2018-06-24 21:22:54,266 INFO ]: 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 [2018-06-24 21:22:54,279 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 21:22:54,307 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-24 21:22:54,308 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-24 21:22:54,308 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2018-06-24 21:22:54,310 INFO ]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 5 [2018-06-24 21:22:54,311 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:54,311 INFO ]: Abstraction has 13 states and 17 transitions. [2018-06-24 21:22:54,311 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:22:54,311 INFO ]: Start isEmpty. Operand 13 states and 17 transitions. [2018-06-24 21:22:54,312 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:22:54,312 INFO ]: Found error trace [2018-06-24 21:22:54,313 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:22:54,313 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:54,313 INFO ]: Analyzing trace with hash 33801698, now seen corresponding path program 1 times [2018-06-24 21:22:54,313 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:54,313 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:54,317 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:54,317 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:54,317 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:54,327 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:54,352 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:22:54,352 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:22:54,352 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:22:54,354 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:22:54,354 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:22:54,354 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:22:54,354 INFO ]: Start difference. First operand 13 states and 17 transitions. Second operand 3 states. [2018-06-24 21:22:54,375 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:54,375 INFO ]: Finished difference Result 19 states and 25 transitions. [2018-06-24 21:22:54,375 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:22:54,375 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:22:54,376 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:54,376 INFO ]: With dead ends: 19 [2018-06-24 21:22:54,376 INFO ]: Without dead ends: 19 [2018-06-24 21:22:54,377 INFO ]: 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 [2018-06-24 21:22:54,377 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-24 21:22:54,382 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 15. [2018-06-24 21:22:54,382 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-24 21:22:54,383 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2018-06-24 21:22:54,383 INFO ]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 5 [2018-06-24 21:22:54,383 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:54,383 INFO ]: Abstraction has 15 states and 19 transitions. [2018-06-24 21:22:54,383 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:22:54,383 INFO ]: Start isEmpty. Operand 15 states and 19 transitions. [2018-06-24 21:22:54,384 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 21:22:54,384 INFO ]: Found error trace [2018-06-24 21:22:54,384 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 21:22:54,384 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:54,384 INFO ]: Analyzing trace with hash 695440575, now seen corresponding path program 1 times [2018-06-24 21:22:54,384 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:54,384 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:54,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:54,384 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:54,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:54,400 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:54,577 INFO ]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:22:54,577 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:54,577 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:54,590 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:54,624 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:54,633 INFO ]: Computing forward predicates... [2018-06-24 21:22:54,844 INFO ]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 21:22:54,876 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:54,876 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-24 21:22:54,877 INFO ]: Interpolant automaton has 9 states [2018-06-24 21:22:54,877 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-24 21:22:54,877 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-24 21:22:54,877 INFO ]: Start difference. First operand 15 states and 19 transitions. Second operand 9 states. [2018-06-24 21:22:55,279 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:55,279 INFO ]: Finished difference Result 27 states and 39 transitions. [2018-06-24 21:22:55,280 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-24 21:22:55,280 INFO ]: Start accepts. Automaton has 9 states. Word has length 11 [2018-06-24 21:22:55,280 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:55,283 INFO ]: With dead ends: 27 [2018-06-24 21:22:55,283 INFO ]: Without dead ends: 27 [2018-06-24 21:22:55,283 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-06-24 21:22:55,284 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-24 21:22:55,293 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 23. [2018-06-24 21:22:55,293 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-24 21:22:55,294 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2018-06-24 21:22:55,294 INFO ]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 11 [2018-06-24 21:22:55,294 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:55,294 INFO ]: Abstraction has 23 states and 33 transitions. [2018-06-24 21:22:55,294 INFO ]: Interpolant automaton has 9 states. [2018-06-24 21:22:55,294 INFO ]: Start isEmpty. Operand 23 states and 33 transitions. [2018-06-24 21:22:55,298 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-24 21:22:55,298 INFO ]: Found error trace [2018-06-24 21:22:55,298 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-06-24 21:22:55,298 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:55,298 INFO ]: Analyzing trace with hash 107953538, now seen corresponding path program 2 times [2018-06-24 21:22:55,298 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:55,298 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:55,299 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:55,299 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:22:55,299 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:55,332 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:55,615 INFO ]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:22:55,616 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:55,616 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-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 [2018-06-24 21:22:55,625 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:22:55,645 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:22:55,645 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:55,647 INFO ]: Computing forward predicates... [2018-06-24 21:22:56,130 INFO ]: Checked inductivity of 18 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 21:22:56,148 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:56,148 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2018-06-24 21:22:56,149 INFO ]: Interpolant automaton has 16 states [2018-06-24 21:22:56,149 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-24 21:22:56,149 INFO ]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2018-06-24 21:22:56,149 INFO ]: Start difference. First operand 23 states and 33 transitions. Second operand 16 states. [2018-06-24 21:22:57,665 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:57,665 INFO ]: Finished difference Result 67 states and 119 transitions. [2018-06-24 21:22:57,665 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-06-24 21:22:57,665 INFO ]: Start accepts. Automaton has 16 states. Word has length 17 [2018-06-24 21:22:57,665 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:57,667 INFO ]: With dead ends: 67 [2018-06-24 21:22:57,668 INFO ]: Without dead ends: 50 [2018-06-24 21:22:57,669 INFO ]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=451, Invalid=1619, Unknown=0, NotChecked=0, Total=2070 [2018-06-24 21:22:57,669 INFO ]: Start minimizeSevpa. Operand 50 states. [2018-06-24 21:22:57,678 INFO ]: Finished minimizeSevpa. Reduced states from 50 to 31. [2018-06-24 21:22:57,679 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-24 21:22:57,680 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 48 transitions. [2018-06-24 21:22:57,680 INFO ]: Start accepts. Automaton has 31 states and 48 transitions. Word has length 17 [2018-06-24 21:22:57,680 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:57,680 INFO ]: Abstraction has 31 states and 48 transitions. [2018-06-24 21:22:57,680 INFO ]: Interpolant automaton has 16 states. [2018-06-24 21:22:57,680 INFO ]: Start isEmpty. Operand 31 states and 48 transitions. [2018-06-24 21:22:57,682 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-24 21:22:57,682 INFO ]: Found error trace [2018-06-24 21:22:57,682 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-06-24 21:22:57,682 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:57,682 INFO ]: Analyzing trace with hash -1340995108, now seen corresponding path program 3 times [2018-06-24 21:22:57,682 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:57,682 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:57,683 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:57,683 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:57,683 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:57,698 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:57,817 INFO ]: Checked inductivity of 18 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-24 21:22:57,817 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:57,817 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:57,824 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-24 21:22:57,842 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-24 21:22:57,842 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:57,845 INFO ]: Computing forward predicates... [2018-06-24 21:22:58,085 INFO ]: Checked inductivity of 18 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-24 21:22:58,104 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:58,104 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-06-24 21:22:58,105 INFO ]: Interpolant automaton has 13 states [2018-06-24 21:22:58,105 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-24 21:22:58,105 INFO ]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-06-24 21:22:58,105 INFO ]: Start difference. First operand 31 states and 48 transitions. Second operand 13 states. [2018-06-24 21:22:58,247 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:58,247 INFO ]: Finished difference Result 53 states and 79 transitions. [2018-06-24 21:22:58,247 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-24 21:22:58,248 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-24 21:22:58,248 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:58,249 INFO ]: With dead ends: 53 [2018-06-24 21:22:58,249 INFO ]: Without dead ends: 53 [2018-06-24 21:22:58,250 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2018-06-24 21:22:58,250 INFO ]: Start minimizeSevpa. Operand 53 states. [2018-06-24 21:22:58,256 INFO ]: Finished minimizeSevpa. Reduced states from 53 to 33. [2018-06-24 21:22:58,257 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-24 21:22:58,258 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2018-06-24 21:22:58,258 INFO ]: Start accepts. Automaton has 33 states and 50 transitions. Word has length 17 [2018-06-24 21:22:58,258 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:58,258 INFO ]: Abstraction has 33 states and 50 transitions. [2018-06-24 21:22:58,258 INFO ]: Interpolant automaton has 13 states. [2018-06-24 21:22:58,258 INFO ]: Start isEmpty. Operand 33 states and 50 transitions. [2018-06-24 21:22:58,259 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-24 21:22:58,259 INFO ]: Found error trace [2018-06-24 21:22:58,260 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2018-06-24 21:22:58,260 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:58,260 INFO ]: Analyzing trace with hash 118412383, now seen corresponding path program 4 times [2018-06-24 21:22:58,260 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:58,260 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:58,260 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:58,261 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:58,261 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:58,277 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:58,441 INFO ]: Checked inductivity of 39 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-24 21:22:58,441 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:58,441 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-24 21:22:58,456 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:58,474 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-24 21:22:58,474 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:58,477 INFO ]: Computing forward predicates... [2018-06-24 21:22:58,599 INFO ]: Checked inductivity of 39 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-24 21:22:58,623 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:22:58,623 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 19 [2018-06-24 21:22:58,623 INFO ]: Interpolant automaton has 19 states [2018-06-24 21:22:58,623 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-24 21:22:58,623 INFO ]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2018-06-24 21:22:58,623 INFO ]: Start difference. First operand 33 states and 50 transitions. Second operand 19 states. [2018-06-24 21:22:59,538 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:22:59,538 INFO ]: Finished difference Result 63 states and 112 transitions. [2018-06-24 21:22:59,538 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-06-24 21:22:59,538 INFO ]: Start accepts. Automaton has 19 states. Word has length 23 [2018-06-24 21:22:59,539 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:22:59,540 INFO ]: With dead ends: 63 [2018-06-24 21:22:59,540 INFO ]: Without dead ends: 63 [2018-06-24 21:22:59,542 INFO ]: 0 DeclaredPredicates, 73 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=365, Invalid=1797, Unknown=0, NotChecked=0, Total=2162 [2018-06-24 21:22:59,542 INFO ]: Start minimizeSevpa. Operand 63 states. [2018-06-24 21:22:59,554 INFO ]: Finished minimizeSevpa. Reduced states from 63 to 42. [2018-06-24 21:22:59,554 INFO ]: Start removeUnreachable. Operand 42 states. [2018-06-24 21:22:59,556 INFO ]: Finished removeUnreachable. Reduced from 42 states to 42 states and 68 transitions. [2018-06-24 21:22:59,556 INFO ]: Start accepts. Automaton has 42 states and 68 transitions. Word has length 23 [2018-06-24 21:22:59,556 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:22:59,556 INFO ]: Abstraction has 42 states and 68 transitions. [2018-06-24 21:22:59,556 INFO ]: Interpolant automaton has 19 states. [2018-06-24 21:22:59,556 INFO ]: Start isEmpty. Operand 42 states and 68 transitions. [2018-06-24 21:22:59,558 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-24 21:22:59,558 INFO ]: Found error trace [2018-06-24 21:22:59,558 INFO ]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2018-06-24 21:22:59,558 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:22:59,559 INFO ]: Analyzing trace with hash 1709642108, now seen corresponding path program 5 times [2018-06-24 21:22:59,559 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:22:59,559 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:22:59,559 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:59,559 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:22:59,560 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:22:59,582 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:59,837 INFO ]: Checked inductivity of 68 backedges. 19 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-24 21:22:59,837 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:22:59,837 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:22:59,845 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-24 21:22:59,885 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-24 21:22:59,885 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:22:59,888 INFO ]: Computing forward predicates... [2018-06-24 21:23:00,000 INFO ]: Checked inductivity of 68 backedges. 19 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-24 21:23:00,019 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:00,019 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 22 [2018-06-24 21:23:00,019 INFO ]: Interpolant automaton has 22 states [2018-06-24 21:23:00,019 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-24 21:23:00,019 INFO ]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2018-06-24 21:23:00,019 INFO ]: Start difference. First operand 42 states and 68 transitions. Second operand 22 states. [2018-06-24 21:23:01,046 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:01,047 INFO ]: Finished difference Result 78 states and 139 transitions. [2018-06-24 21:23:01,047 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2018-06-24 21:23:01,047 INFO ]: Start accepts. Automaton has 22 states. Word has length 29 [2018-06-24 21:23:01,047 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:01,049 INFO ]: With dead ends: 78 [2018-06-24 21:23:01,049 INFO ]: Without dead ends: 78 [2018-06-24 21:23:01,050 INFO ]: 0 DeclaredPredicates, 98 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 858 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=593, Invalid=3067, Unknown=0, NotChecked=0, Total=3660 [2018-06-24 21:23:01,050 INFO ]: Start minimizeSevpa. Operand 78 states. [2018-06-24 21:23:01,067 INFO ]: Finished minimizeSevpa. Reduced states from 78 to 51. [2018-06-24 21:23:01,067 INFO ]: Start removeUnreachable. Operand 51 states. [2018-06-24 21:23:01,068 INFO ]: Finished removeUnreachable. Reduced from 51 states to 51 states and 86 transitions. [2018-06-24 21:23:01,068 INFO ]: Start accepts. Automaton has 51 states and 86 transitions. Word has length 29 [2018-06-24 21:23:01,068 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:01,069 INFO ]: Abstraction has 51 states and 86 transitions. [2018-06-24 21:23:01,069 INFO ]: Interpolant automaton has 22 states. [2018-06-24 21:23:01,069 INFO ]: Start isEmpty. Operand 51 states and 86 transitions. [2018-06-24 21:23:01,073 INFO ]: Finished isEmpty. Found accepting run of length 36 [2018-06-24 21:23:01,073 INFO ]: Found error trace [2018-06-24 21:23:01,073 INFO ]: trace histogram [6, 5, 5, 5, 5, 5, 1, 1, 1, 1] [2018-06-24 21:23:01,073 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:01,073 INFO ]: Analyzing trace with hash 485639385, now seen corresponding path program 6 times [2018-06-24 21:23:01,073 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:01,073 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:01,074 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:01,074 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:23:01,074 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:01,090 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:01,287 INFO ]: Checked inductivity of 105 backedges. 24 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-06-24 21:23:01,287 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:01,287 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:23:01,295 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-24 21:23:01,319 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-06-24 21:23:01,319 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:01,322 INFO ]: Computing forward predicates... [2018-06-24 21:23:01,447 INFO ]: Checked inductivity of 105 backedges. 24 proven. 54 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-06-24 21:23:01,479 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:01,479 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 25 [2018-06-24 21:23:01,479 INFO ]: Interpolant automaton has 25 states [2018-06-24 21:23:01,479 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-24 21:23:01,480 INFO ]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2018-06-24 21:23:01,480 INFO ]: Start difference. First operand 51 states and 86 transitions. Second operand 25 states. [2018-06-24 21:23:03,122 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:03,122 INFO ]: Finished difference Result 93 states and 166 transitions. [2018-06-24 21:23:03,122 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2018-06-24 21:23:03,122 INFO ]: Start accepts. Automaton has 25 states. Word has length 35 [2018-06-24 21:23:03,122 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:03,124 INFO ]: With dead ends: 93 [2018-06-24 21:23:03,124 INFO ]: Without dead ends: 93 [2018-06-24 21:23:03,125 INFO ]: 0 DeclaredPredicates, 123 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1418 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=891, Invalid=4659, Unknown=0, NotChecked=0, Total=5550 [2018-06-24 21:23:03,126 INFO ]: Start minimizeSevpa. Operand 93 states. [2018-06-24 21:23:03,139 INFO ]: Finished minimizeSevpa. Reduced states from 93 to 60. [2018-06-24 21:23:03,139 INFO ]: Start removeUnreachable. Operand 60 states. [2018-06-24 21:23:03,141 INFO ]: Finished removeUnreachable. Reduced from 60 states to 60 states and 104 transitions. [2018-06-24 21:23:03,141 INFO ]: Start accepts. Automaton has 60 states and 104 transitions. Word has length 35 [2018-06-24 21:23:03,142 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:03,142 INFO ]: Abstraction has 60 states and 104 transitions. [2018-06-24 21:23:03,142 INFO ]: Interpolant automaton has 25 states. [2018-06-24 21:23:03,142 INFO ]: Start isEmpty. Operand 60 states and 104 transitions. [2018-06-24 21:23:03,145 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-24 21:23:03,145 INFO ]: Found error trace [2018-06-24 21:23:03,145 INFO ]: trace histogram [7, 6, 6, 6, 6, 6, 1, 1, 1, 1] [2018-06-24 21:23:03,145 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:03,145 INFO ]: Analyzing trace with hash 892255862, now seen corresponding path program 7 times [2018-06-24 21:23:03,145 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:03,145 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:03,146 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:03,146 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:23:03,146 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:03,164 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:03,406 INFO ]: Checked inductivity of 150 backedges. 29 proven. 80 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-06-24 21:23:03,406 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:03,406 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:23:03,412 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:03,453 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:03,457 INFO ]: Computing forward predicates... [2018-06-24 21:23:03,734 INFO ]: Checked inductivity of 150 backedges. 29 proven. 80 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2018-06-24 21:23:03,753 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:03,753 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 28 [2018-06-24 21:23:03,753 INFO ]: Interpolant automaton has 28 states [2018-06-24 21:23:03,753 INFO ]: Constructing interpolant automaton starting with 28 interpolants. [2018-06-24 21:23:03,754 INFO ]: CoverageRelationStatistics Valid=90, Invalid=666, Unknown=0, NotChecked=0, Total=756 [2018-06-24 21:23:03,754 INFO ]: Start difference. First operand 60 states and 104 transitions. Second operand 28 states. [2018-06-24 21:23:05,123 WARN ]: Spent 152.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-24 21:23:05,786 WARN ]: Spent 231.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-06-24 21:23:06,563 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:06,563 INFO ]: Finished difference Result 108 states and 193 transitions. [2018-06-24 21:23:06,564 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2018-06-24 21:23:06,564 INFO ]: Start accepts. Automaton has 28 states. Word has length 41 [2018-06-24 21:23:06,564 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:06,566 INFO ]: With dead ends: 108 [2018-06-24 21:23:06,566 INFO ]: Without dead ends: 108 [2018-06-24 21:23:06,568 INFO ]: 0 DeclaredPredicates, 148 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2134 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1259, Invalid=6573, Unknown=0, NotChecked=0, Total=7832 [2018-06-24 21:23:06,568 INFO ]: Start minimizeSevpa. Operand 108 states. [2018-06-24 21:23:06,593 INFO ]: Finished minimizeSevpa. Reduced states from 108 to 69. [2018-06-24 21:23:06,593 INFO ]: Start removeUnreachable. Operand 69 states. [2018-06-24 21:23:06,595 INFO ]: Finished removeUnreachable. Reduced from 69 states to 69 states and 122 transitions. [2018-06-24 21:23:06,595 INFO ]: Start accepts. Automaton has 69 states and 122 transitions. Word has length 41 [2018-06-24 21:23:06,595 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:06,595 INFO ]: Abstraction has 69 states and 122 transitions. [2018-06-24 21:23:06,595 INFO ]: Interpolant automaton has 28 states. [2018-06-24 21:23:06,595 INFO ]: Start isEmpty. Operand 69 states and 122 transitions. [2018-06-24 21:23:06,602 INFO ]: Finished isEmpty. Found accepting run of length 48 [2018-06-24 21:23:06,602 INFO ]: Found error trace [2018-06-24 21:23:06,602 INFO ]: trace histogram [8, 7, 7, 7, 7, 7, 1, 1, 1, 1] [2018-06-24 21:23:06,602 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:06,602 INFO ]: Analyzing trace with hash 1939787347, now seen corresponding path program 8 times [2018-06-24 21:23:06,602 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:06,602 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:06,603 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:06,603 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:06,603 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:06,641 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:07,109 INFO ]: Checked inductivity of 203 backedges. 34 proven. 111 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-06-24 21:23:07,109 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:07,109 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:23:07,124 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:23:07,192 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:23:07,192 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:07,197 INFO ]: Computing forward predicates... [2018-06-24 21:23:07,402 INFO ]: Checked inductivity of 203 backedges. 34 proven. 111 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2018-06-24 21:23:07,422 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:07,422 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 31 [2018-06-24 21:23:07,423 INFO ]: Interpolant automaton has 31 states [2018-06-24 21:23:07,423 INFO ]: Constructing interpolant automaton starting with 31 interpolants. [2018-06-24 21:23:07,423 INFO ]: CoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2018-06-24 21:23:07,423 INFO ]: Start difference. First operand 69 states and 122 transitions. Second operand 31 states. [2018-06-24 21:23:07,995 WARN ]: Spent 145.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 7 [2018-06-24 21:23:08,876 WARN ]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-24 21:23:10,947 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:10,947 INFO ]: Finished difference Result 123 states and 220 transitions. [2018-06-24 21:23:10,947 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2018-06-24 21:23:10,947 INFO ]: Start accepts. Automaton has 31 states. Word has length 47 [2018-06-24 21:23:10,947 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:10,949 INFO ]: With dead ends: 123 [2018-06-24 21:23:10,949 INFO ]: Without dead ends: 123 [2018-06-24 21:23:10,953 INFO ]: 0 DeclaredPredicates, 173 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3005 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1697, Invalid=8809, Unknown=0, NotChecked=0, Total=10506 [2018-06-24 21:23:10,953 INFO ]: Start minimizeSevpa. Operand 123 states. [2018-06-24 21:23:10,965 INFO ]: Finished minimizeSevpa. Reduced states from 123 to 78. [2018-06-24 21:23:10,965 INFO ]: Start removeUnreachable. Operand 78 states. [2018-06-24 21:23:10,967 INFO ]: Finished removeUnreachable. Reduced from 78 states to 78 states and 140 transitions. [2018-06-24 21:23:10,967 INFO ]: Start accepts. Automaton has 78 states and 140 transitions. Word has length 47 [2018-06-24 21:23:10,967 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:10,967 INFO ]: Abstraction has 78 states and 140 transitions. [2018-06-24 21:23:10,967 INFO ]: Interpolant automaton has 31 states. [2018-06-24 21:23:10,967 INFO ]: Start isEmpty. Operand 78 states and 140 transitions. [2018-06-24 21:23:10,971 INFO ]: Finished isEmpty. Found accepting run of length 54 [2018-06-24 21:23:10,971 INFO ]: Found error trace [2018-06-24 21:23:10,971 INFO ]: trace histogram [9, 8, 8, 8, 8, 8, 1, 1, 1, 1] [2018-06-24 21:23:10,971 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:10,971 INFO ]: Analyzing trace with hash 1179174000, now seen corresponding path program 9 times [2018-06-24 21:23:10,971 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:10,971 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:10,972 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:10,972 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:23:10,972 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:11,008 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:11,471 INFO ]: Checked inductivity of 264 backedges. 39 proven. 147 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-06-24 21:23:11,471 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:11,527 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:23:11,535 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-24 21:23:11,581 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2018-06-24 21:23:11,581 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:11,587 INFO ]: Computing forward predicates... [2018-06-24 21:23:11,748 INFO ]: Checked inductivity of 264 backedges. 39 proven. 147 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-06-24 21:23:11,767 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:11,767 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 34 [2018-06-24 21:23:11,768 INFO ]: Interpolant automaton has 34 states [2018-06-24 21:23:11,768 INFO ]: Constructing interpolant automaton starting with 34 interpolants. [2018-06-24 21:23:11,769 INFO ]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2018-06-24 21:23:11,769 INFO ]: Start difference. First operand 78 states and 140 transitions. Second operand 34 states. [2018-06-24 21:23:14,216 WARN ]: Spent 261.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-06-24 21:23:15,018 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:15,018 INFO ]: Finished difference Result 138 states and 247 transitions. [2018-06-24 21:23:15,018 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2018-06-24 21:23:15,018 INFO ]: Start accepts. Automaton has 34 states. Word has length 53 [2018-06-24 21:23:15,018 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:15,020 INFO ]: With dead ends: 138 [2018-06-24 21:23:15,020 INFO ]: Without dead ends: 138 [2018-06-24 21:23:15,024 INFO ]: 0 DeclaredPredicates, 198 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4032 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2205, Invalid=11367, Unknown=0, NotChecked=0, Total=13572 [2018-06-24 21:23:15,024 INFO ]: Start minimizeSevpa. Operand 138 states. [2018-06-24 21:23:15,045 INFO ]: Finished minimizeSevpa. Reduced states from 138 to 87. [2018-06-24 21:23:15,045 INFO ]: Start removeUnreachable. Operand 87 states. [2018-06-24 21:23:15,049 INFO ]: Finished removeUnreachable. Reduced from 87 states to 87 states and 158 transitions. [2018-06-24 21:23:15,050 INFO ]: Start accepts. Automaton has 87 states and 158 transitions. Word has length 53 [2018-06-24 21:23:15,050 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:15,050 INFO ]: Abstraction has 87 states and 158 transitions. [2018-06-24 21:23:15,050 INFO ]: Interpolant automaton has 34 states. [2018-06-24 21:23:15,050 INFO ]: Start isEmpty. Operand 87 states and 158 transitions. [2018-06-24 21:23:15,054 INFO ]: Finished isEmpty. Found accepting run of length 60 [2018-06-24 21:23:15,054 INFO ]: Found error trace [2018-06-24 21:23:15,055 INFO ]: trace histogram [10, 9, 9, 9, 9, 9, 1, 1, 1, 1] [2018-06-24 21:23:15,055 INFO ]: === Iteration 12 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:15,055 INFO ]: Analyzing trace with hash -248057651, now seen corresponding path program 10 times [2018-06-24 21:23:15,055 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:15,055 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:15,055 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:15,055 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:23:15,055 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:15,083 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:16,395 INFO ]: Checked inductivity of 333 backedges. 44 proven. 188 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-06-24 21:23:16,395 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:16,395 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:23:16,401 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-24 21:23:16,445 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-24 21:23:16,445 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:16,450 INFO ]: Computing forward predicates... [2018-06-24 21:23:16,629 INFO ]: Checked inductivity of 333 backedges. 44 proven. 188 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2018-06-24 21:23:16,648 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:16,655 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 37 [2018-06-24 21:23:16,656 INFO ]: Interpolant automaton has 37 states [2018-06-24 21:23:16,656 INFO ]: Constructing interpolant automaton starting with 37 interpolants. [2018-06-24 21:23:16,656 INFO ]: CoverageRelationStatistics Valid=159, Invalid=1173, Unknown=0, NotChecked=0, Total=1332 [2018-06-24 21:23:16,656 INFO ]: Start difference. First operand 87 states and 158 transitions. Second operand 37 states. [2018-06-24 21:23:19,314 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:19,314 INFO ]: Finished difference Result 153 states and 274 transitions. [2018-06-24 21:23:19,314 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2018-06-24 21:23:19,314 INFO ]: Start accepts. Automaton has 37 states. Word has length 59 [2018-06-24 21:23:19,315 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:19,317 INFO ]: With dead ends: 153 [2018-06-24 21:23:19,317 INFO ]: Without dead ends: 153 [2018-06-24 21:23:19,322 INFO ]: 0 DeclaredPredicates, 223 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5208 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2783, Invalid=14247, Unknown=0, NotChecked=0, Total=17030 [2018-06-24 21:23:19,323 INFO ]: Start minimizeSevpa. Operand 153 states. [2018-06-24 21:23:19,339 INFO ]: Finished minimizeSevpa. Reduced states from 153 to 96. [2018-06-24 21:23:19,339 INFO ]: Start removeUnreachable. Operand 96 states. [2018-06-24 21:23:19,341 INFO ]: Finished removeUnreachable. Reduced from 96 states to 96 states and 176 transitions. [2018-06-24 21:23:19,341 INFO ]: Start accepts. Automaton has 96 states and 176 transitions. Word has length 59 [2018-06-24 21:23:19,341 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:19,341 INFO ]: Abstraction has 96 states and 176 transitions. [2018-06-24 21:23:19,341 INFO ]: Interpolant automaton has 37 states. [2018-06-24 21:23:19,341 INFO ]: Start isEmpty. Operand 96 states and 176 transitions. [2018-06-24 21:23:19,347 INFO ]: Finished isEmpty. Found accepting run of length 66 [2018-06-24 21:23:19,347 INFO ]: Found error trace [2018-06-24 21:23:19,347 INFO ]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1] [2018-06-24 21:23:19,347 INFO ]: === Iteration 13 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:19,347 INFO ]: Analyzing trace with hash -76045462, now seen corresponding path program 11 times [2018-06-24 21:23:19,347 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:19,347 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:19,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:19,348 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:23:19,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:19,367 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:19,761 INFO ]: Checked inductivity of 410 backedges. 49 proven. 234 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-06-24 21:23:19,761 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:19,761 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:23:19,767 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-24 21:23:19,813 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2018-06-24 21:23:19,813 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:19,818 INFO ]: Computing forward predicates... [2018-06-24 21:23:19,966 INFO ]: Checked inductivity of 410 backedges. 49 proven. 234 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-06-24 21:23:19,997 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:19,997 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 40 [2018-06-24 21:23:19,997 INFO ]: Interpolant automaton has 40 states [2018-06-24 21:23:19,998 INFO ]: Constructing interpolant automaton starting with 40 interpolants. [2018-06-24 21:23:19,998 INFO ]: CoverageRelationStatistics Valid=188, Invalid=1372, Unknown=0, NotChecked=0, Total=1560 [2018-06-24 21:23:19,998 INFO ]: Start difference. First operand 96 states and 176 transitions. Second operand 40 states. [2018-06-24 21:23:23,175 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:23,175 INFO ]: Finished difference Result 174 states and 315 transitions. [2018-06-24 21:23:23,175 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2018-06-24 21:23:23,175 INFO ]: Start accepts. Automaton has 40 states. Word has length 65 [2018-06-24 21:23:23,175 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:23,176 INFO ]: With dead ends: 174 [2018-06-24 21:23:23,176 INFO ]: Without dead ends: 174 [2018-06-24 21:23:23,178 INFO ]: 0 DeclaredPredicates, 248 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6428 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3431, Invalid=17449, Unknown=0, NotChecked=0, Total=20880 [2018-06-24 21:23:23,178 INFO ]: Start minimizeSevpa. Operand 174 states. [2018-06-24 21:23:23,193 INFO ]: Finished minimizeSevpa. Reduced states from 174 to 105. [2018-06-24 21:23:23,193 INFO ]: Start removeUnreachable. Operand 105 states. [2018-06-24 21:23:23,195 INFO ]: Finished removeUnreachable. Reduced from 105 states to 105 states and 194 transitions. [2018-06-24 21:23:23,195 INFO ]: Start accepts. Automaton has 105 states and 194 transitions. Word has length 65 [2018-06-24 21:23:23,196 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:23,196 INFO ]: Abstraction has 105 states and 194 transitions. [2018-06-24 21:23:23,196 INFO ]: Interpolant automaton has 40 states. [2018-06-24 21:23:23,196 INFO ]: Start isEmpty. Operand 105 states and 194 transitions. [2018-06-24 21:23:23,200 INFO ]: Finished isEmpty. Found accepting run of length 72 [2018-06-24 21:23:23,200 INFO ]: Found error trace [2018-06-24 21:23:23,201 INFO ]: trace histogram [12, 11, 11, 11, 11, 11, 1, 1, 1, 1] [2018-06-24 21:23:23,201 INFO ]: === Iteration 14 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:23,201 INFO ]: Analyzing trace with hash -602067897, now seen corresponding path program 12 times [2018-06-24 21:23:23,201 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:23,201 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:23,201 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:23,201 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:23:23,201 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:23,224 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:24,271 INFO ]: Checked inductivity of 495 backedges. 54 proven. 285 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-06-24 21:23:24,271 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:24,271 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:23:24,280 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-24 21:23:24,330 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2018-06-24 21:23:24,330 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:24,336 INFO ]: Computing forward predicates... [2018-06-24 21:23:24,536 INFO ]: Checked inductivity of 495 backedges. 54 proven. 285 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2018-06-24 21:23:24,569 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:24,569 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 43 [2018-06-24 21:23:24,569 INFO ]: Interpolant automaton has 43 states [2018-06-24 21:23:24,569 INFO ]: Constructing interpolant automaton starting with 43 interpolants. [2018-06-24 21:23:24,569 INFO ]: CoverageRelationStatistics Valid=220, Invalid=1586, Unknown=0, NotChecked=0, Total=1806 [2018-06-24 21:23:24,569 INFO ]: Start difference. First operand 105 states and 194 transitions. Second operand 43 states. [2018-06-24 21:23:27,570 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:27,570 INFO ]: Finished difference Result 181 states and 322 transitions. [2018-06-24 21:23:27,570 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2018-06-24 21:23:27,570 INFO ]: Start accepts. Automaton has 43 states. Word has length 71 [2018-06-24 21:23:27,570 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:27,573 INFO ]: With dead ends: 181 [2018-06-24 21:23:27,573 INFO ]: Without dead ends: 181 [2018-06-24 21:23:27,576 INFO ]: 0 DeclaredPredicates, 269 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7190 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=4032, Invalid=19838, Unknown=0, NotChecked=0, Total=23870 [2018-06-24 21:23:27,576 INFO ]: Start minimizeSevpa. Operand 181 states. [2018-06-24 21:23:27,587 INFO ]: Finished minimizeSevpa. Reduced states from 181 to 114. [2018-06-24 21:23:27,588 INFO ]: Start removeUnreachable. Operand 114 states. [2018-06-24 21:23:27,594 INFO ]: Finished removeUnreachable. Reduced from 114 states to 114 states and 212 transitions. [2018-06-24 21:23:27,594 INFO ]: Start accepts. Automaton has 114 states and 212 transitions. Word has length 71 [2018-06-24 21:23:27,594 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:27,595 INFO ]: Abstraction has 114 states and 212 transitions. [2018-06-24 21:23:27,595 INFO ]: Interpolant automaton has 43 states. [2018-06-24 21:23:27,595 INFO ]: Start isEmpty. Operand 114 states and 212 transitions. [2018-06-24 21:23:27,600 INFO ]: Finished isEmpty. Found accepting run of length 78 [2018-06-24 21:23:27,600 INFO ]: Found error trace [2018-06-24 21:23:27,600 INFO ]: trace histogram [13, 12, 12, 12, 12, 12, 1, 1, 1, 1] [2018-06-24 21:23:27,601 INFO ]: === Iteration 15 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:23:27,601 INFO ]: Analyzing trace with hash -415376540, now seen corresponding path program 13 times [2018-06-24 21:23:27,601 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:23:27,601 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:23:27,601 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:27,601 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 21:23:27,601 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:23:27,622 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:27,757 INFO ]: Checked inductivity of 588 backedges. 163 proven. 81 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2018-06-24 21:23:27,757 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:23:27,757 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:23:27,763 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:23:27,804 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:23:27,809 INFO ]: Computing forward predicates... [2018-06-24 21:23:28,369 INFO ]: Checked inductivity of 588 backedges. 45 proven. 355 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2018-06-24 21:23:28,390 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:23:28,390 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 43] total 45 [2018-06-24 21:23:28,390 INFO ]: Interpolant automaton has 45 states [2018-06-24 21:23:28,390 INFO ]: Constructing interpolant automaton starting with 45 interpolants. [2018-06-24 21:23:28,390 INFO ]: CoverageRelationStatistics Valid=289, Invalid=1691, Unknown=0, NotChecked=0, Total=1980 [2018-06-24 21:23:28,391 INFO ]: Start difference. First operand 114 states and 212 transitions. Second operand 45 states. [2018-06-24 21:23:30,129 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:23:30,129 INFO ]: Finished difference Result 137 states and 208 transitions. [2018-06-24 21:23:30,129 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2018-06-24 21:23:30,129 INFO ]: Start accepts. Automaton has 45 states. Word has length 77 [2018-06-24 21:23:30,130 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:23:30,130 INFO ]: With dead ends: 137 [2018-06-24 21:23:30,130 INFO ]: Without dead ends: 0 [2018-06-24 21:23:30,131 INFO ]: 0 DeclaredPredicates, 182 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4512 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3016, Invalid=11746, Unknown=0, NotChecked=0, Total=14762 [2018-06-24 21:23:30,132 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:23:30,132 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:23:30,132 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:23:30,132 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:23:30,132 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 77 [2018-06-24 21:23:30,132 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:23:30,132 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:23:30,132 INFO ]: Interpolant automaton has 45 states. [2018-06-24 21:23:30,132 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:23:30,132 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:23:30,136 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:23:30,138 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:23:30 BasicIcfg [2018-06-24 21:23:30,138 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:23:30,138 INFO ]: Toolchain (without parser) took 36645.54 ms. Allocated memory was 306.2 MB in the beginning and 809.5 MB in the end (delta: 503.3 MB). Free memory was 262.7 MB in the beginning and 577.3 MB in the end (delta: -314.6 MB). Peak memory consumption was 188.7 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:30,139 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 306.2 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:23:30,139 INFO ]: ChcToBoogie took 56.01 ms. Allocated memory is still 306.2 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:30,140 INFO ]: Boogie Preprocessor took 36.21 ms. Allocated memory is still 306.2 MB. Free memory was 260.7 MB in the beginning and 258.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:30,140 INFO ]: RCFGBuilder took 228.81 ms. Allocated memory is still 306.2 MB. Free memory was 258.7 MB in the beginning and 252.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:30,140 INFO ]: BlockEncodingV2 took 83.29 ms. Allocated memory is still 306.2 MB. Free memory was 252.7 MB in the beginning and 248.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:30,141 INFO ]: TraceAbstraction took 36224.71 ms. Allocated memory was 306.2 MB in the beginning and 809.5 MB in the end (delta: 503.3 MB). Free memory was 248.7 MB in the beginning and 577.3 MB in the end (delta: -328.6 MB). Peak memory consumption was 174.7 MB. Max. memory is 3.6 GB. [2018-06-24 21:23:30,143 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 16 edges - StatisticsResult: Encoded RCFG 8 locations, 10 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 306.2 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 56.01 ms. Allocated memory is still 306.2 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 36.21 ms. Allocated memory is still 306.2 MB. Free memory was 260.7 MB in the beginning and 258.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 228.81 ms. Allocated memory is still 306.2 MB. Free memory was 258.7 MB in the beginning and 252.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 83.29 ms. Allocated memory is still 306.2 MB. Free memory was 252.7 MB in the beginning and 248.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 36224.71 ms. Allocated memory was 306.2 MB in the beginning and 809.5 MB in the end (delta: 503.3 MB). Free memory was 248.7 MB in the beginning and 577.3 MB in the end (delta: -328.6 MB). Peak memory consumption was 174.7 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 8 locations, 1 error locations. SAFE Result, 36.1s OverallTime, 15 OverallIterations, 13 TraceHistogramMax, 25.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 148 SDtfs, 386 SDslu, 855 SDs, 0 SdLazy, 12225 SolverSat, 3542 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1862 GetRequests, 756 SyntacticMatches, 7 SemanticMatches, 1099 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35713 ImplicationChecksByTransitivity, 22.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=114occurred in iteration=14, 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: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 456 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.3s InterpolantComputationTime, 1100 NumberOfCodeBlocks, 1100 NumberOfCodeBlocksAsserted, 82 NumberOfCheckSat, 1072 ConstructedInterpolants, 0 QuantifiedInterpolants, 203924 SizeOfPredicates, 361 NumberOfNonLiveVariables, 2924 ConjunctsInSsa, 680 ConjunctsInUnsatCore, 28 InterpolantComputations, 2 PerfectInterpolantSequences, 2618/5392 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_99.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-23-30-158.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_99.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-23-30-158.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_99.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-23-30-158.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/mc91_99.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-23-30-158.csv Received shutdown request...