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/dotprod4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:18:00,233 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:18:00,235 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:18:00,247 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:18:00,247 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:18:00,248 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:18:00,249 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:18:00,257 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:18:00,259 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:18:00,262 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:18:00,263 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:18:00,263 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:18:00,264 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:18:00,268 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:18:00,269 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:18:00,270 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:18:00,271 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:18:00,273 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:18:00,275 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:18:00,277 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:18:00,278 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:18:00,279 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:18:00,282 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:18:00,282 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:18:00,282 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:18:00,283 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:18:00,284 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:18:00,285 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:18:00,285 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:18:00,286 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:18:00,287 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:18:00,287 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:18:00,287 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:18:00,288 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:18:00,288 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:18:00,289 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:18:00,289 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:18:00,309 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:18:00,310 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:18:00,310 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:18:00,310 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:18:00,311 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:18:00,311 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:18:00,311 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:18:00,312 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:18:00,313 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:18:00,313 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:18:00,313 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:18:00,313 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:18:00,313 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:18:00,314 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:18:00,314 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:18:00,314 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:18:00,314 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:18:00,314 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:18:00,314 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:18:00,315 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:18:00,315 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:18:00,318 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:18:00,318 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:18:00,365 INFO ]: Repository-Root is: /tmp [2018-06-26 18:18:00,380 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:18:00,385 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:18:00,387 INFO ]: Initializing SmtParser... [2018-06-26 18:18:00,387 INFO ]: SmtParser initialized [2018-06-26 18:18:00,388 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/dotprod4.smt2 [2018-06-26 18:18:00,389 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 [2018-06-26 18:18:00,476 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/dotprod4.smt2 unknown [2018-06-26 18:18:00,787 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/dotprod4.smt2 [2018-06-26 18:18:00,791 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:18:00,799 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:18:00,799 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:18:00,799 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:18:00,799 INFO ]: ChcToBoogie initialized [2018-06-26 18:18:00,802 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:18:00" (1/1) ... [2018-06-26 18:18:00,860 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:18:00 Unit [2018-06-26 18:18:00,860 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:18:00,861 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:18:00,861 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:18:00,861 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:18:00,888 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:18:00" (1/1) ... [2018-06-26 18:18:00,889 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:18:00" (1/1) ... [2018-06-26 18:18:00,894 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:18:00" (1/1) ... [2018-06-26 18:18:00,895 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:18:00" (1/1) ... [2018-06-26 18:18:00,898 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:18:00" (1/1) ... [2018-06-26 18:18:00,900 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:18:00" (1/1) ... [2018-06-26 18:18:00,901 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:18:00" (1/1) ... [2018-06-26 18:18:00,903 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:18:00,903 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:18:00,903 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:18:00,903 INFO ]: RCFGBuilder initialized [2018-06-26 18:18:00,904 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:18:00" (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) [2018-06-26 18:18:00,915 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:18:00,915 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:18:00,915 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:18:00,915 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:18:00,915 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:18:00,915 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 [2018-06-26 18:18:01,296 INFO ]: Using library mode [2018-06-26 18:18:01,297 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:18:01 BoogieIcfgContainer [2018-06-26 18:18:01,297 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:18:01,297 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:18:01,297 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:18:01,298 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:18:01,299 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:18:01" (1/1) ... [2018-06-26 18:18:01,316 INFO ]: Initial Icfg 29 locations, 40 edges [2018-06-26 18:18:01,317 INFO ]: Using Remove infeasible edges [2018-06-26 18:18:01,318 INFO ]: Using Maximize final states [2018-06-26 18:18:01,318 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:18:01,319 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:18:01,320 INFO ]: Using Remove sink states [2018-06-26 18:18:01,321 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:18:01,321 INFO ]: Using Use SBE [2018-06-26 18:18:01,343 INFO ]: SBE split 1 edges [2018-06-26 18:18:01,348 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-26 18:18:01,350 INFO ]: 0 new accepting states [2018-06-26 18:18:01,488 INFO ]: Removed 31 edges and 11 locations by large block encoding [2018-06-26 18:18:01,490 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:18:01,491 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:18:01,491 INFO ]: 0 new accepting states [2018-06-26 18:18:01,492 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:18:01,492 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:18:01,492 INFO ]: Encoded RCFG 16 locations, 28 edges [2018-06-26 18:18:01,493 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:18:01 BasicIcfg [2018-06-26 18:18:01,493 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:18:01,494 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:18:01,494 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:18:01,497 INFO ]: TraceAbstraction initialized [2018-06-26 18:18:01,497 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:18:00" (1/4) ... [2018-06-26 18:18:01,498 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22fe9d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:18:01, skipping insertion in model container [2018-06-26 18:18:01,498 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:18:00" (2/4) ... [2018-06-26 18:18:01,498 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22fe9d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:18:01, skipping insertion in model container [2018-06-26 18:18:01,498 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:18:01" (3/4) ... [2018-06-26 18:18:01,498 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22fe9d06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:18:01, skipping insertion in model container [2018-06-26 18:18:01,499 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:18:01" (4/4) ... [2018-06-26 18:18:01,500 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:18:01,507 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:18:01,512 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:18:01,550 INFO ]: Using default assertion order modulation [2018-06-26 18:18:01,551 INFO ]: Interprodecural is true [2018-06-26 18:18:01,551 INFO ]: Hoare is false [2018-06-26 18:18:01,551 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:18:01,551 INFO ]: Backedges is TWOTRACK [2018-06-26 18:18:01,551 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:18:01,551 INFO ]: Difference is false [2018-06-26 18:18:01,551 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:18:01,551 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:18:01,563 INFO ]: Start isEmpty. Operand 16 states. [2018-06-26 18:18:01,576 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:18:01,576 INFO ]: Found error trace [2018-06-26 18:18:01,577 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:18:01,577 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:18:01,581 INFO ]: Analyzing trace with hash 38669927, now seen corresponding path program 1 times [2018-06-26 18:18:01,582 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:18:01,582 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:18:01,621 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:01,621 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:18:01,621 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:01,662 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:18:01,724 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:18:01,726 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:18:01,726 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:18:01,727 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:18:01,737 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:18:01,737 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:18:01,740 INFO ]: Start difference. First operand 16 states. Second operand 3 states. [2018-06-26 18:18:02,069 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:18:02,069 INFO ]: Finished difference Result 25 states and 47 transitions. [2018-06-26 18:18:02,070 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:18:02,072 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:18:02,072 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:18:02,090 INFO ]: With dead ends: 25 [2018-06-26 18:18:02,090 INFO ]: Without dead ends: 25 [2018-06-26 18:18:02,093 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 [2018-06-26 18:18:02,111 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-26 18:18:02,146 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-26 18:18:02,147 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-26 18:18:02,149 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 47 transitions. [2018-06-26 18:18:02,152 INFO ]: Start accepts. Automaton has 25 states and 47 transitions. Word has length 5 [2018-06-26 18:18:02,152 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:18:02,152 INFO ]: Abstraction has 25 states and 47 transitions. [2018-06-26 18:18:02,153 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:18:02,153 INFO ]: Start isEmpty. Operand 25 states and 47 transitions. [2018-06-26 18:18:02,157 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:18:02,157 INFO ]: Found error trace [2018-06-26 18:18:02,158 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:18:02,158 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:18:02,158 INFO ]: Analyzing trace with hash 1201353075, now seen corresponding path program 1 times [2018-06-26 18:18:02,158 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:18:02,158 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:18:02,159 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:02,159 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:18:02,159 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:02,174 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:18:02,234 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:18:02,234 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:18:02,235 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 18:18:02,236 INFO ]: Interpolant automaton has 4 states [2018-06-26 18:18:02,236 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 18:18:02,236 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 18:18:02,236 INFO ]: Start difference. First operand 25 states and 47 transitions. Second operand 4 states. [2018-06-26 18:18:02,669 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:18:02,669 INFO ]: Finished difference Result 49 states and 102 transitions. [2018-06-26 18:18:02,672 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 18:18:02,673 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-26 18:18:02,673 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:18:02,682 INFO ]: With dead ends: 49 [2018-06-26 18:18:02,682 INFO ]: Without dead ends: 49 [2018-06-26 18:18:02,683 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:18:02,683 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-26 18:18:02,705 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 29. [2018-06-26 18:18:02,705 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-26 18:18:02,707 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 53 transitions. [2018-06-26 18:18:02,708 INFO ]: Start accepts. Automaton has 29 states and 53 transitions. Word has length 6 [2018-06-26 18:18:02,708 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:18:02,708 INFO ]: Abstraction has 29 states and 53 transitions. [2018-06-26 18:18:02,708 INFO ]: Interpolant automaton has 4 states. [2018-06-26 18:18:02,708 INFO ]: Start isEmpty. Operand 29 states and 53 transitions. [2018-06-26 18:18:02,710 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:18:02,710 INFO ]: Found error trace [2018-06-26 18:18:02,710 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:18:02,710 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:18:02,710 INFO ]: Analyzing trace with hash 1202276596, now seen corresponding path program 1 times [2018-06-26 18:18:02,710 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:18:02,710 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:18:02,711 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:02,711 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:18:02,711 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:02,727 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:18:02,780 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:18:02,780 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:18:02,780 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:18:02,781 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:18:02,781 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:18:02,781 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:18:02,781 INFO ]: Start difference. First operand 29 states and 53 transitions. Second operand 3 states. [2018-06-26 18:18:02,845 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:18:02,845 INFO ]: Finished difference Result 29 states and 47 transitions. [2018-06-26 18:18:02,845 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:18:02,845 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 18:18:02,845 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:18:02,846 INFO ]: With dead ends: 29 [2018-06-26 18:18:02,846 INFO ]: Without dead ends: 25 [2018-06-26 18:18:02,847 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 [2018-06-26 18:18:02,847 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-26 18:18:02,851 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-26 18:18:02,851 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-26 18:18:02,852 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 43 transitions. [2018-06-26 18:18:02,852 INFO ]: Start accepts. Automaton has 25 states and 43 transitions. Word has length 6 [2018-06-26 18:18:02,852 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:18:02,852 INFO ]: Abstraction has 25 states and 43 transitions. [2018-06-26 18:18:02,852 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:18:02,852 INFO ]: Start isEmpty. Operand 25 states and 43 transitions. [2018-06-26 18:18:02,854 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:18:02,854 INFO ]: Found error trace [2018-06-26 18:18:02,854 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:18:02,854 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:18:02,854 INFO ]: Analyzing trace with hash 1203200117, now seen corresponding path program 1 times [2018-06-26 18:18:02,854 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:18:02,854 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:18:02,855 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:02,855 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:18:02,855 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:02,862 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:18:02,938 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:18:02,938 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:18:02,938 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 18:18:02,938 INFO ]: Interpolant automaton has 4 states [2018-06-26 18:18:02,938 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 18:18:02,938 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 18:18:02,939 INFO ]: Start difference. First operand 25 states and 43 transitions. Second operand 4 states. [2018-06-26 18:18:03,154 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:18:03,155 INFO ]: Finished difference Result 41 states and 82 transitions. [2018-06-26 18:18:03,155 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 18:18:03,155 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-26 18:18:03,155 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:18:03,157 INFO ]: With dead ends: 41 [2018-06-26 18:18:03,157 INFO ]: Without dead ends: 41 [2018-06-26 18:18:03,157 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:18:03,157 INFO ]: Start minimizeSevpa. Operand 41 states. [2018-06-26 18:18:03,166 INFO ]: Finished minimizeSevpa. Reduced states from 41 to 28. [2018-06-26 18:18:03,166 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-26 18:18:03,168 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 47 transitions. [2018-06-26 18:18:03,168 INFO ]: Start accepts. Automaton has 28 states and 47 transitions. Word has length 6 [2018-06-26 18:18:03,168 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:18:03,168 INFO ]: Abstraction has 28 states and 47 transitions. [2018-06-26 18:18:03,168 INFO ]: Interpolant automaton has 4 states. [2018-06-26 18:18:03,168 INFO ]: Start isEmpty. Operand 28 states and 47 transitions. [2018-06-26 18:18:03,170 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-26 18:18:03,170 INFO ]: Found error trace [2018-06-26 18:18:03,170 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:18:03,170 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:18:03,170 INFO ]: Analyzing trace with hash 126186444, now seen corresponding path program 1 times [2018-06-26 18:18:03,170 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:18:03,170 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:18:03,172 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:03,172 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:18:03,172 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:03,203 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:18:03,251 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:18:03,251 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:18:03,251 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:18:03,251 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:18:03,251 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:18:03,251 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:18:03,251 INFO ]: Start difference. First operand 28 states and 47 transitions. Second operand 3 states. [2018-06-26 18:18:03,321 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:18:03,321 INFO ]: Finished difference Result 38 states and 59 transitions. [2018-06-26 18:18:03,321 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:18:03,321 INFO ]: Start accepts. Automaton has 3 states. Word has length 11 [2018-06-26 18:18:03,321 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:18:03,322 INFO ]: With dead ends: 38 [2018-06-26 18:18:03,322 INFO ]: Without dead ends: 38 [2018-06-26 18:18:03,323 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 [2018-06-26 18:18:03,323 INFO ]: Start minimizeSevpa. Operand 38 states. [2018-06-26 18:18:03,327 INFO ]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-06-26 18:18:03,327 INFO ]: Start removeUnreachable. Operand 38 states. [2018-06-26 18:18:03,328 INFO ]: Finished removeUnreachable. Reduced from 38 states to 38 states and 59 transitions. [2018-06-26 18:18:03,328 INFO ]: Start accepts. Automaton has 38 states and 59 transitions. Word has length 11 [2018-06-26 18:18:03,328 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:18:03,328 INFO ]: Abstraction has 38 states and 59 transitions. [2018-06-26 18:18:03,328 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:18:03,329 INFO ]: Start isEmpty. Operand 38 states and 59 transitions. [2018-06-26 18:18:03,330 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-26 18:18:03,330 INFO ]: Found error trace [2018-06-26 18:18:03,330 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:18:03,330 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:18:03,331 INFO ]: Analyzing trace with hash 1695440583, now seen corresponding path program 1 times [2018-06-26 18:18:03,331 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:18:03,331 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:18:03,331 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:03,332 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:18:03,332 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:03,344 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:18:03,386 INFO ]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:18:03,387 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:18:03,387 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:18:03,387 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:18:03,387 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:18:03,387 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:18:03,387 INFO ]: Start difference. First operand 38 states and 59 transitions. Second operand 3 states. [2018-06-26 18:18:03,469 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:18:03,469 INFO ]: Finished difference Result 49 states and 77 transitions. [2018-06-26 18:18:03,469 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:18:03,470 INFO ]: Start accepts. Automaton has 3 states. Word has length 12 [2018-06-26 18:18:03,470 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:18:03,471 INFO ]: With dead ends: 49 [2018-06-26 18:18:03,471 INFO ]: Without dead ends: 49 [2018-06-26 18:18:03,471 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 [2018-06-26 18:18:03,471 INFO ]: Start minimizeSevpa. Operand 49 states. [2018-06-26 18:18:03,477 INFO ]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-06-26 18:18:03,477 INFO ]: Start removeUnreachable. Operand 49 states. [2018-06-26 18:18:03,479 INFO ]: Finished removeUnreachable. Reduced from 49 states to 49 states and 77 transitions. [2018-06-26 18:18:03,479 INFO ]: Start accepts. Automaton has 49 states and 77 transitions. Word has length 12 [2018-06-26 18:18:03,479 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:18:03,479 INFO ]: Abstraction has 49 states and 77 transitions. [2018-06-26 18:18:03,479 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:18:03,479 INFO ]: Start isEmpty. Operand 49 states and 77 transitions. [2018-06-26 18:18:03,482 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-26 18:18:03,482 INFO ]: Found error trace [2018-06-26 18:18:03,482 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:18:03,482 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:18:03,482 INFO ]: Analyzing trace with hash -1264978740, now seen corresponding path program 1 times [2018-06-26 18:18:03,482 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:18:03,482 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:18:03,483 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:03,483 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:18:03,483 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:03,502 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:18:03,661 INFO ]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 18:18:03,661 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:18:03,661 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 [2018-06-26 18:18:03,681 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:18:03,739 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:18:03,755 INFO ]: Computing forward predicates... [2018-06-26 18:18:03,999 INFO ]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 18:18:04,025 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:18:04,025 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-26 18:18:04,025 INFO ]: Interpolant automaton has 14 states [2018-06-26 18:18:04,025 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-26 18:18:04,026 INFO ]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-06-26 18:18:04,026 INFO ]: Start difference. First operand 49 states and 77 transitions. Second operand 14 states. [2018-06-26 18:18:05,940 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:18:05,941 INFO ]: Finished difference Result 116 states and 292 transitions. [2018-06-26 18:18:05,941 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-26 18:18:05,941 INFO ]: Start accepts. Automaton has 14 states. Word has length 17 [2018-06-26 18:18:05,941 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:18:05,946 INFO ]: With dead ends: 116 [2018-06-26 18:18:05,946 INFO ]: Without dead ends: 116 [2018-06-26 18:18:05,946 INFO ]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2018-06-26 18:18:05,947 INFO ]: Start minimizeSevpa. Operand 116 states. [2018-06-26 18:18:05,991 INFO ]: Finished minimizeSevpa. Reduced states from 116 to 57. [2018-06-26 18:18:05,991 INFO ]: Start removeUnreachable. Operand 57 states. [2018-06-26 18:18:05,993 INFO ]: Finished removeUnreachable. Reduced from 57 states to 57 states and 95 transitions. [2018-06-26 18:18:05,993 INFO ]: Start accepts. Automaton has 57 states and 95 transitions. Word has length 17 [2018-06-26 18:18:05,993 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:18:05,993 INFO ]: Abstraction has 57 states and 95 transitions. [2018-06-26 18:18:05,993 INFO ]: Interpolant automaton has 14 states. [2018-06-26 18:18:05,993 INFO ]: Start isEmpty. Operand 57 states and 95 transitions. [2018-06-26 18:18:05,997 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-26 18:18:05,997 INFO ]: Found error trace [2018-06-26 18:18:05,997 INFO ]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:18:05,997 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:18:05,997 INFO ]: Analyzing trace with hash -155337421, now seen corresponding path program 1 times [2018-06-26 18:18:05,997 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:18:05,997 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:18:05,998 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:05,998 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:18:05,998 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:06,007 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:18:06,007 INFO ]: Advancing trace checker [2018-06-26 18:18:06,007 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:18:06,026 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:18:06,063 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:18:06,066 INFO ]: Computing forward predicates... [2018-06-26 18:18:06,086 INFO ]: Checked inductivity of 25 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-26 18:18:06,118 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:18:06,118 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:18:06,118 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:18:06,118 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:18:06,118 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:18:06,118 INFO ]: Start difference. First operand 57 states and 95 transitions. Second operand 3 states. [2018-06-26 18:18:06,191 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:18:06,191 INFO ]: Finished difference Result 68 states and 113 transitions. [2018-06-26 18:18:06,192 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:18:06,192 INFO ]: Start accepts. Automaton has 3 states. Word has length 23 [2018-06-26 18:18:06,192 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:18:06,192 INFO ]: With dead ends: 68 [2018-06-26 18:18:06,193 INFO ]: Without dead ends: 68 [2018-06-26 18:18:06,193 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:18:06,193 INFO ]: Start minimizeSevpa. Operand 68 states. [2018-06-26 18:18:06,200 INFO ]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-06-26 18:18:06,200 INFO ]: Start removeUnreachable. Operand 68 states. [2018-06-26 18:18:06,202 INFO ]: Finished removeUnreachable. Reduced from 68 states to 68 states and 113 transitions. [2018-06-26 18:18:06,202 INFO ]: Start accepts. Automaton has 68 states and 113 transitions. Word has length 23 [2018-06-26 18:18:06,202 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:18:06,202 INFO ]: Abstraction has 68 states and 113 transitions. [2018-06-26 18:18:06,202 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:18:06,202 INFO ]: Start isEmpty. Operand 68 states and 113 transitions. [2018-06-26 18:18:06,205 INFO ]: Finished isEmpty. Found accepting run of length 40 [2018-06-26 18:18:06,205 INFO ]: Found error trace [2018-06-26 18:18:06,205 INFO ]: trace histogram [7, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:18:06,205 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:18:06,205 INFO ]: Analyzing trace with hash 930441260, now seen corresponding path program 1 times [2018-06-26 18:18:06,205 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:18:06,205 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:18:06,206 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:06,206 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:18:06,206 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:18:06,213 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-26 18:18:06,213 INFO ]: Advancing trace checker [2018-06-26 18:18:06,213 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 (exit command is (exit), workingDir is null) [2018-06-26 18:18:06,228 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-26 18:18:06,284 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:18:06,288 INFO ]: Computing forward predicates... [2018-06-26 18:18:06,567 INFO ]: Checked inductivity of 78 backedges. 46 proven. 11 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-26 18:18:06,587 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-26 18:18:06,587 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-06-26 18:18:06,587 INFO ]: Interpolant automaton has 7 states [2018-06-26 18:18:06,588 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-26 18:18:06,588 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-26 18:18:06,588 INFO ]: Start difference. First operand 68 states and 113 transitions. Second operand 7 states. [2018-06-26 18:18:06,784 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:18:06,784 INFO ]: Finished difference Result 58 states and 85 transitions. [2018-06-26 18:18:06,784 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-26 18:18:06,784 INFO ]: Start accepts. Automaton has 7 states. Word has length 39 [2018-06-26 18:18:06,784 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:18:06,784 INFO ]: With dead ends: 58 [2018-06-26 18:18:06,784 INFO ]: Without dead ends: 0 [2018-06-26 18:18:06,784 INFO ]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-06-26 18:18:06,784 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:18:06,784 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:18:06,784 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:18:06,784 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:18:06,784 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-06-26 18:18:06,784 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:18:06,784 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:18:06,784 INFO ]: Interpolant automaton has 7 states. [2018-06-26 18:18:06,784 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:18:06,784 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:18:06,786 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:18:06,787 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:18:06 BasicIcfg [2018-06-26 18:18:06,787 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:18:06,788 INFO ]: Toolchain (without parser) took 5996.12 ms. Allocated memory was 305.7 MB in the beginning and 340.3 MB in the end (delta: 34.6 MB). Free memory was 257.1 MB in the beginning and 207.9 MB in the end (delta: 49.2 MB). Peak memory consumption was 83.8 MB. Max. memory is 3.6 GB. [2018-06-26 18:18:06,789 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 305.7 MB. Free memory is still 269.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:18:06,789 INFO ]: ChcToBoogie took 61.76 ms. Allocated memory is still 305.7 MB. Free memory was 256.1 MB in the beginning and 254.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:18:06,790 INFO ]: Boogie Preprocessor took 41.69 ms. Allocated memory is still 305.7 MB. Free memory was 254.1 MB in the beginning and 253.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-26 18:18:06,790 INFO ]: RCFGBuilder took 393.59 ms. Allocated memory is still 305.7 MB. Free memory was 253.1 MB in the beginning and 240.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:18:06,795 INFO ]: BlockEncodingV2 took 195.43 ms. Allocated memory is still 305.7 MB. Free memory was 240.1 MB in the beginning and 232.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:18:06,796 INFO ]: TraceAbstraction took 5293.38 ms. Allocated memory was 305.7 MB in the beginning and 340.3 MB in the end (delta: 34.6 MB). Free memory was 232.1 MB in the beginning and 207.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 58.8 MB. Max. memory is 3.6 GB. [2018-06-26 18:18:06,804 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 29 locations, 40 edges - StatisticsResult: Encoded RCFG 16 locations, 28 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 305.7 MB. Free memory is still 269.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 61.76 ms. Allocated memory is still 305.7 MB. Free memory was 256.1 MB in the beginning and 254.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.69 ms. Allocated memory is still 305.7 MB. Free memory was 254.1 MB in the beginning and 253.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 393.59 ms. Allocated memory is still 305.7 MB. Free memory was 253.1 MB in the beginning and 240.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 195.43 ms. Allocated memory is still 305.7 MB. Free memory was 240.1 MB in the beginning and 232.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5293.38 ms. Allocated memory was 305.7 MB in the beginning and 340.3 MB in the end (delta: 34.6 MB). Free memory was 232.1 MB in the beginning and 207.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 58.8 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, 16 locations, 1 error locations. SAFE Result, 5.2s OverallTime, 9 OverallIterations, 7 TraceHistogramMax, 3.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 339 SDtfs, 143 SDslu, 665 SDs, 0 SdLazy, 836 SolverSat, 271 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=8, 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 92 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 142 NumberOfCodeBlocks, 142 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 4893 SizeOfPredicates, 14 NumberOfNonLiveVariables, 714 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 113/130 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/dotprod4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-18-06-815.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-18-06-815.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-18-06-815.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-18-06-815.csv Received shutdown request...