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/sigma_sum.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:26:45,296 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:26:45,298 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:26:45,312 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:26:45,312 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:26:45,313 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:26:45,316 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:26:45,321 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:26:45,323 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:26:45,324 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:26:45,324 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:26:45,326 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:26:45,327 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:26:45,327 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:26:45,328 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:26:45,329 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:26:45,330 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:26:45,333 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:26:45,334 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:26:45,344 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:26:45,345 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:26:45,346 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:26:45,348 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:26:45,348 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:26:45,348 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:26:45,352 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:26:45,353 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:26:45,353 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:26:45,354 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:26:45,355 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:26:45,356 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:26:45,357 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:26:45,357 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:26:45,357 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:26:45,358 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:26:45,358 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:26:45,359 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:26:45,386 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:26:45,386 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:26:45,387 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:26:45,387 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:26:45,388 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:26:45,388 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:26:45,388 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:26:45,388 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:26:45,388 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:26:45,389 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:26:45,389 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:26:45,389 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:26:45,390 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:26:45,390 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:26:45,390 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:26:45,390 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:26:45,390 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:26:45,390 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:26:45,391 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:26:45,391 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:26:45,391 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:26:45,392 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:26:45,393 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:26:45,439 INFO ]: Repository-Root is: /tmp [2018-06-26 18:26:45,452 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:26:45,460 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:26:45,462 INFO ]: Initializing SmtParser... [2018-06-26 18:26:45,462 INFO ]: SmtParser initialized [2018-06-26 18:26:45,462 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sigma_sum.smt2 [2018-06-26 18:26:45,464 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 18:26:45,558 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sigma_sum.smt2 unknown [2018-06-26 18:26:45,709 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sigma_sum.smt2 [2018-06-26 18:26:45,719 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:26:45,725 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:26:45,725 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:26:45,725 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:26:45,726 INFO ]: ChcToBoogie initialized [2018-06-26 18:26:45,730 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:26:45" (1/1) ... [2018-06-26 18:26:45,780 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:26:45 Unit [2018-06-26 18:26:45,780 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:26:45,781 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:26:45,781 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:26:45,781 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:26:45,802 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:26:45" (1/1) ... [2018-06-26 18:26:45,802 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:26:45" (1/1) ... [2018-06-26 18:26:45,807 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:26:45" (1/1) ... [2018-06-26 18:26:45,807 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:26:45" (1/1) ... [2018-06-26 18:26:45,810 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:26:45" (1/1) ... [2018-06-26 18:26:45,812 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:26:45" (1/1) ... [2018-06-26 18:26:45,813 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:26:45" (1/1) ... [2018-06-26 18:26:45,814 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:26:45,817 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:26:45,817 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:26:45,817 INFO ]: RCFGBuilder initialized [2018-06-26 18:26:45,818 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:26:45" (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 18:26:45,833 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:26:45,833 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:26:45,833 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:26:45,833 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:26:45,833 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:26:45,833 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 18:26:46,071 INFO ]: Using library mode [2018-06-26 18:26:46,072 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:26:46 BoogieIcfgContainer [2018-06-26 18:26:46,072 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:26:46,072 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:26:46,072 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:26:46,073 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:26:46,073 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:26:46" (1/1) ... [2018-06-26 18:26:46,087 INFO ]: Initial Icfg 15 locations, 19 edges [2018-06-26 18:26:46,089 INFO ]: Using Remove infeasible edges [2018-06-26 18:26:46,089 INFO ]: Using Maximize final states [2018-06-26 18:26:46,090 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:26:46,090 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:26:46,092 INFO ]: Using Remove sink states [2018-06-26 18:26:46,093 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:26:46,093 INFO ]: Using Use SBE [2018-06-26 18:26:46,099 INFO ]: SBE split 0 edges [2018-06-26 18:26:46,110 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-26 18:26:46,112 INFO ]: 0 new accepting states [2018-06-26 18:26:46,252 INFO ]: Removed 15 edges and 5 locations by large block encoding [2018-06-26 18:26:46,254 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:26:46,255 INFO ]: Removed 1 edges and 0 locations because of local infeasibility [2018-06-26 18:26:46,255 INFO ]: 0 new accepting states [2018-06-26 18:26:46,255 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:26:46,255 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:26:46,256 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:26:46,256 INFO ]: 0 new accepting states [2018-06-26 18:26:46,256 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:26:46,256 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:26:46,256 INFO ]: Encoded RCFG 8 locations, 11 edges [2018-06-26 18:26:46,257 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:26:46 BasicIcfg [2018-06-26 18:26:46,257 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:26:46,258 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:26:46,258 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:26:46,271 INFO ]: TraceAbstraction initialized [2018-06-26 18:26:46,271 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:26:45" (1/4) ... [2018-06-26 18:26:46,272 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709b4149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:26:46, skipping insertion in model container [2018-06-26 18:26:46,272 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:26:45" (2/4) ... [2018-06-26 18:26:46,273 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709b4149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:26:46, skipping insertion in model container [2018-06-26 18:26:46,273 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:26:46" (3/4) ... [2018-06-26 18:26:46,273 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709b4149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:26:46, skipping insertion in model container [2018-06-26 18:26:46,273 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:26:46" (4/4) ... [2018-06-26 18:26:46,275 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:26:46,284 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:26:46,294 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:26:46,332 INFO ]: Using default assertion order modulation [2018-06-26 18:26:46,332 INFO ]: Interprodecural is true [2018-06-26 18:26:46,332 INFO ]: Hoare is false [2018-06-26 18:26:46,332 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:26:46,332 INFO ]: Backedges is TWOTRACK [2018-06-26 18:26:46,332 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:26:46,333 INFO ]: Difference is false [2018-06-26 18:26:46,333 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:26:46,333 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:26:46,341 INFO ]: Start isEmpty. Operand 8 states. [2018-06-26 18:26:46,351 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:26:46,351 INFO ]: Found error trace [2018-06-26 18:26:46,352 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:26:46,352 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:26:46,357 INFO ]: Analyzing trace with hash 33928646, now seen corresponding path program 1 times [2018-06-26 18:26:46,359 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:26:46,359 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:26:46,392 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:26:46,392 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:26:46,392 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:26:46,428 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:26:46,482 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:26:46,484 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:26:46,484 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:26:46,485 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:26:46,495 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:26:46,495 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:26:46,497 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-26 18:26:46,591 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:26:46,591 INFO ]: Finished difference Result 12 states and 17 transitions. [2018-06-26 18:26:46,592 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:26:46,593 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:26:46,593 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:26:46,599 INFO ]: With dead ends: 12 [2018-06-26 18:26:46,600 INFO ]: Without dead ends: 12 [2018-06-26 18:26:46,602 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 18:26:46,614 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-26 18:26:46,630 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-26 18:26:46,632 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-26 18:26:46,632 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2018-06-26 18:26:46,633 INFO ]: Start accepts. Automaton has 12 states and 17 transitions. Word has length 5 [2018-06-26 18:26:46,634 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:26:46,634 INFO ]: Abstraction has 12 states and 17 transitions. [2018-06-26 18:26:46,634 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:26:46,635 INFO ]: Start isEmpty. Operand 12 states and 17 transitions. [2018-06-26 18:26:46,636 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-26 18:26:46,636 INFO ]: Found error trace [2018-06-26 18:26:46,636 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:26:46,636 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:26:46,636 INFO ]: Analyzing trace with hash -825632893, now seen corresponding path program 1 times [2018-06-26 18:26:46,636 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:26:46,636 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:26:46,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:26:46,637 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:26:46,637 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:26:46,650 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:26:46,760 INFO ]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:26:46,760 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:26:46,760 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-26 18:26:46,761 INFO ]: Interpolant automaton has 5 states [2018-06-26 18:26:46,761 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 18:26:46,762 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-26 18:26:46,762 INFO ]: Start difference. First operand 12 states and 17 transitions. Second operand 5 states. [2018-06-26 18:26:46,978 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:26:46,978 INFO ]: Finished difference Result 15 states and 21 transitions. [2018-06-26 18:26:46,979 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-26 18:26:46,979 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-26 18:26:46,979 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:26:46,979 INFO ]: With dead ends: 15 [2018-06-26 18:26:46,979 INFO ]: Without dead ends: 13 [2018-06-26 18:26:46,980 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-26 18:26:46,980 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-26 18:26:46,982 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-26 18:26:46,982 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-26 18:26:46,985 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2018-06-26 18:26:46,985 INFO ]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 9 [2018-06-26 18:26:46,985 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:26:46,985 INFO ]: Abstraction has 13 states and 17 transitions. [2018-06-26 18:26:46,985 INFO ]: Interpolant automaton has 5 states. [2018-06-26 18:26:46,985 INFO ]: Start isEmpty. Operand 13 states and 17 transitions. [2018-06-26 18:26:46,985 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-26 18:26:46,985 INFO ]: Found error trace [2018-06-26 18:26:46,985 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:26:46,985 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:26:46,986 INFO ]: Analyzing trace with hash -246257545, now seen corresponding path program 1 times [2018-06-26 18:26:46,986 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:26:46,986 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:26:46,986 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:26:46,986 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:26:46,986 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:26:47,019 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:26:47,259 INFO ]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:26:47,259 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:26:47,259 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 18:26:47,267 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:26:47,296 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:26:47,302 INFO ]: Computing forward predicates... [2018-06-26 18:26:47,661 INFO ]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 18:26:47,682 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:26:47,682 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-06-26 18:26:47,682 INFO ]: Interpolant automaton has 10 states [2018-06-26 18:26:47,682 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-26 18:26:47,683 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-26 18:26:47,683 INFO ]: Start difference. First operand 13 states and 17 transitions. Second operand 10 states. [2018-06-26 18:26:47,956 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:26:47,956 INFO ]: Finished difference Result 10 states and 13 transitions. [2018-06-26 18:26:47,957 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-26 18:26:47,957 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-26 18:26:47,957 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:26:47,957 INFO ]: With dead ends: 10 [2018-06-26 18:26:47,957 INFO ]: Without dead ends: 0 [2018-06-26 18:26:47,958 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-06-26 18:26:47,958 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:26:47,958 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:26:47,958 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:26:47,958 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:26:47,958 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-06-26 18:26:47,958 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:26:47,958 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:26:47,958 INFO ]: Interpolant automaton has 10 states. [2018-06-26 18:26:47,958 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:26:47,958 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:26:47,961 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:26:47,962 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:26:47 BasicIcfg [2018-06-26 18:26:47,962 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:26:47,963 INFO ]: Toolchain (without parser) took 2243.29 ms. Allocated memory is still 306.2 MB. Free memory was 262.5 MB in the beginning and 189.6 MB in the end (delta: 72.9 MB). Peak memory consumption was 72.9 MB. Max. memory is 3.6 GB. [2018-06-26 18:26:47,964 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 306.2 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:26:47,964 INFO ]: ChcToBoogie took 55.15 ms. Allocated memory is still 306.2 MB. Free memory was 262.5 MB in the beginning and 260.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:26:47,965 INFO ]: Boogie Preprocessor took 33.55 ms. Allocated memory is still 306.2 MB. Free memory was 260.5 MB in the beginning and 258.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:26:47,966 INFO ]: RCFGBuilder took 255.27 ms. Allocated memory is still 306.2 MB. Free memory was 258.5 MB in the beginning and 250.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:26:47,968 INFO ]: BlockEncodingV2 took 184.44 ms. Allocated memory is still 306.2 MB. Free memory was 250.5 MB in the beginning and 246.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:26:47,968 INFO ]: TraceAbstraction took 1704.55 ms. Allocated memory is still 306.2 MB. Free memory was 246.5 MB in the beginning and 189.6 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 3.6 GB. [2018-06-26 18:26:47,977 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 15 locations, 19 edges - StatisticsResult: Encoded RCFG 8 locations, 11 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 306.2 MB. Free memory is still 270.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 55.15 ms. Allocated memory is still 306.2 MB. Free memory was 262.5 MB in the beginning and 260.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 33.55 ms. Allocated memory is still 306.2 MB. Free memory was 260.5 MB in the beginning and 258.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 255.27 ms. Allocated memory is still 306.2 MB. Free memory was 258.5 MB in the beginning and 250.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 184.44 ms. Allocated memory is still 306.2 MB. Free memory was 250.5 MB in the beginning and 246.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1704.55 ms. Allocated memory is still 306.2 MB. Free memory was 246.5 MB in the beginning and 189.6 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 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, 1.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 13 SDslu, 25 SDs, 0 SdLazy, 67 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=2, 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: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 720 SizeOfPredicates, 7 NumberOfNonLiveVariables, 73 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 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/sigma_sum.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-26-47-995.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sigma_sum.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-26-47-995.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sigma_sum.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-26-47-995.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sigma_sum.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-26-47-995.csv Received shutdown request...