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/exc-fact.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:21:21,604 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:21:21,606 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:21:21,619 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:21:21,619 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:21:21,620 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:21:21,623 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:21:21,625 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:21:21,627 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:21:21,627 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:21:21,628 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:21:21,628 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:21:21,629 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:21:21,632 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:21:21,633 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:21:21,634 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:21:21,635 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:21:21,647 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:21:21,649 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:21:21,651 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:21:21,652 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:21:21,653 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:21:21,655 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:21:21,655 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:21:21,655 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:21:21,661 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:21:21,663 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:21:21,664 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:21:21,664 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:21:21,665 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:21:21,666 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:21:21,666 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:21:21,666 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:21:21,667 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:21:21,667 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:21:21,668 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:21:21,668 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:21:21,681 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:21:21,681 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:21:21,682 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:21:21,682 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:21:21,683 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:21:21,683 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:21:21,683 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:21:21,683 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:21:21,684 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:21:21,684 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:21:21,684 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:21:21,684 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:21:21,684 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:21:21,685 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:21:21,685 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:21:21,685 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:21:21,685 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:21:21,685 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:21:21,686 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:21:21,686 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:21:21,686 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:21:21,687 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:21:21,688 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:21:21,738 INFO ]: Repository-Root is: /tmp [2018-06-26 18:21:21,753 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:21:21,759 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:21:21,760 INFO ]: Initializing SmtParser... [2018-06-26 18:21:21,761 INFO ]: SmtParser initialized [2018-06-26 18:21:21,761 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/exc-fact.smt2 [2018-06-26 18:21:21,763 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 18:21:21,849 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/exc-fact.smt2 unknown [2018-06-26 18:21:22,085 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/exc-fact.smt2 [2018-06-26 18:21:22,090 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:21:22,097 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:21:22,098 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:21:22,098 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:21:22,098 INFO ]: ChcToBoogie initialized [2018-06-26 18:21:22,101 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:21:22" (1/1) ... [2018-06-26 18:21:22,143 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:21:22 Unit [2018-06-26 18:21:22,143 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:21:22,143 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:21:22,144 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:21:22,144 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:21:22,166 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:21:22" (1/1) ... [2018-06-26 18:21:22,166 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:21:22" (1/1) ... [2018-06-26 18:21:22,171 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:21:22" (1/1) ... [2018-06-26 18:21:22,172 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:21:22" (1/1) ... [2018-06-26 18:21:22,175 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:21:22" (1/1) ... [2018-06-26 18:21:22,178 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:21:22" (1/1) ... [2018-06-26 18:21:22,179 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:21:22" (1/1) ... [2018-06-26 18:21:22,180 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:21:22,181 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:21:22,181 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:21:22,181 INFO ]: RCFGBuilder initialized [2018-06-26 18:21:22,182 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:21:22" (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 18:21:22,196 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:21:22,196 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:21:22,196 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:21:22,196 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:21:22,196 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:21:22,196 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 18:21:22,442 INFO ]: Using library mode [2018-06-26 18:21:22,442 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:21:22 BoogieIcfgContainer [2018-06-26 18:21:22,442 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:21:22,449 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:21:22,449 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:21:22,450 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:21:22,450 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:21:22" (1/1) ... [2018-06-26 18:21:22,476 INFO ]: Initial Icfg 16 locations, 20 edges [2018-06-26 18:21:22,481 INFO ]: Using Remove infeasible edges [2018-06-26 18:21:22,482 INFO ]: Using Maximize final states [2018-06-26 18:21:22,482 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:21:22,482 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:21:22,484 INFO ]: Using Remove sink states [2018-06-26 18:21:22,485 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:21:22,485 INFO ]: Using Use SBE [2018-06-26 18:21:22,494 INFO ]: SBE split 0 edges [2018-06-26 18:21:22,499 INFO ]: Removed 3 edges and 2 locations because of local infeasibility [2018-06-26 18:21:22,500 INFO ]: 0 new accepting states [2018-06-26 18:21:22,564 INFO ]: Removed 15 edges and 6 locations by large block encoding [2018-06-26 18:21:22,566 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:21:22,568 INFO ]: Removed 1 edges and 0 locations because of local infeasibility [2018-06-26 18:21:22,568 INFO ]: 0 new accepting states [2018-06-26 18:21:22,568 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:21:22,568 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:21:22,568 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:21:22,568 INFO ]: 0 new accepting states [2018-06-26 18:21:22,569 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:21:22,569 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:21:22,569 INFO ]: Encoded RCFG 8 locations, 10 edges [2018-06-26 18:21:22,569 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:21:22 BasicIcfg [2018-06-26 18:21:22,570 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:21:22,571 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:21:22,571 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:21:22,574 INFO ]: TraceAbstraction initialized [2018-06-26 18:21:22,574 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:21:22" (1/4) ... [2018-06-26 18:21:22,575 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be5f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:21:22, skipping insertion in model container [2018-06-26 18:21:22,575 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:21:22" (2/4) ... [2018-06-26 18:21:22,575 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be5f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:21:22, skipping insertion in model container [2018-06-26 18:21:22,575 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:21:22" (3/4) ... [2018-06-26 18:21:22,575 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be5f973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:21:22, skipping insertion in model container [2018-06-26 18:21:22,575 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:21:22" (4/4) ... [2018-06-26 18:21:22,577 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:21:22,584 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:21:22,592 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:21:22,639 INFO ]: Using default assertion order modulation [2018-06-26 18:21:22,640 INFO ]: Interprodecural is true [2018-06-26 18:21:22,640 INFO ]: Hoare is false [2018-06-26 18:21:22,640 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:21:22,640 INFO ]: Backedges is TWOTRACK [2018-06-26 18:21:22,640 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:21:22,640 INFO ]: Difference is false [2018-06-26 18:21:22,640 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:21:22,640 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:21:22,648 INFO ]: Start isEmpty. Operand 8 states. [2018-06-26 18:21:22,657 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:21:22,657 INFO ]: Found error trace [2018-06-26 18:21:22,658 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:21:22,658 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:21:22,663 INFO ]: Analyzing trace with hash 34882982, now seen corresponding path program 1 times [2018-06-26 18:21:22,664 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:21:22,664 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:21:22,701 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:21:22,701 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:21:22,701 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:21:22,732 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:21:22,798 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:21:22,799 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:21:22,799 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:21:22,800 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:21:22,811 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:21:22,812 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:21:22,814 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-26 18:21:22,878 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:21:22,878 INFO ]: Finished difference Result 13 states and 17 transitions. [2018-06-26 18:21:22,879 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:21:22,880 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:21:22,880 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:21:22,888 INFO ]: With dead ends: 13 [2018-06-26 18:21:22,888 INFO ]: Without dead ends: 13 [2018-06-26 18:21:22,889 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 18:21:22,901 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-26 18:21:22,918 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-26 18:21:22,919 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-26 18:21:22,920 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2018-06-26 18:21:22,921 INFO ]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 5 [2018-06-26 18:21:22,922 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:21:22,922 INFO ]: Abstraction has 13 states and 17 transitions. [2018-06-26 18:21:22,922 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:21:22,922 INFO ]: Start isEmpty. Operand 13 states and 17 transitions. [2018-06-26 18:21:22,923 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-26 18:21:22,923 INFO ]: Found error trace [2018-06-26 18:21:22,923 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:21:22,924 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:21:22,924 INFO ]: Analyzing trace with hash -2100105170, now seen corresponding path program 1 times [2018-06-26 18:21:22,924 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:21:22,924 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:21:22,925 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:21:22,925 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:21:22,925 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:21:22,946 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:21:23,031 INFO ]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-26 18:21:23,031 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:21:23,031 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:21:23,033 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:21:23,033 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:21:23,033 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:21:23,033 INFO ]: Start difference. First operand 13 states and 17 transitions. Second operand 3 states. [2018-06-26 18:21:23,098 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:21:23,098 INFO ]: Finished difference Result 14 states and 18 transitions. [2018-06-26 18:21:23,099 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:21:23,099 INFO ]: Start accepts. Automaton has 3 states. Word has length 10 [2018-06-26 18:21:23,100 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:21:23,100 INFO ]: With dead ends: 14 [2018-06-26 18:21:23,100 INFO ]: Without dead ends: 14 [2018-06-26 18:21:23,101 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 18:21:23,101 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-26 18:21:23,103 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-26 18:21:23,103 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-26 18:21:23,106 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 18 transitions. [2018-06-26 18:21:23,106 INFO ]: Start accepts. Automaton has 14 states and 18 transitions. Word has length 10 [2018-06-26 18:21:23,106 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:21:23,106 INFO ]: Abstraction has 14 states and 18 transitions. [2018-06-26 18:21:23,106 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:21:23,106 INFO ]: Start isEmpty. Operand 14 states and 18 transitions. [2018-06-26 18:21:23,106 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-26 18:21:23,106 INFO ]: Found error trace [2018-06-26 18:21:23,106 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 18:21:23,107 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:21:23,107 INFO ]: Analyzing trace with hash 1422499517, now seen corresponding path program 1 times [2018-06-26 18:21:23,107 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:21:23,107 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:21:23,108 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:21:23,108 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:21:23,108 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:21:23,125 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:21:23,293 INFO ]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-26 18:21:23,293 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:21:23,293 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 18:21:23,293 INFO ]: Interpolant automaton has 4 states [2018-06-26 18:21:23,293 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 18:21:23,296 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 18:21:23,296 INFO ]: Start difference. First operand 14 states and 18 transitions. Second operand 4 states. [2018-06-26 18:21:23,386 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:21:23,387 INFO ]: Finished difference Result 8 states and 10 transitions. [2018-06-26 18:21:23,387 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 18:21:23,387 INFO ]: Start accepts. Automaton has 4 states. Word has length 11 [2018-06-26 18:21:23,387 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:21:23,387 INFO ]: With dead ends: 8 [2018-06-26 18:21:23,387 INFO ]: Without dead ends: 0 [2018-06-26 18:21:23,387 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 18:21:23,388 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:21:23,388 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:21:23,388 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:21:23,388 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:21:23,388 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-06-26 18:21:23,388 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:21:23,388 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:21:23,388 INFO ]: Interpolant automaton has 4 states. [2018-06-26 18:21:23,388 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:21:23,388 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:21:23,390 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:21:23,391 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:21:23 BasicIcfg [2018-06-26 18:21:23,392 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:21:23,392 INFO ]: Toolchain (without parser) took 1301.80 ms. Allocated memory is still 309.3 MB. Free memory was 264.6 MB in the beginning and 223.5 MB in the end (delta: 41.1 MB). Peak memory consumption was 41.1 MB. Max. memory is 3.6 GB. [2018-06-26 18:21:23,394 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:21:23,394 INFO ]: ChcToBoogie took 45.60 ms. Allocated memory is still 309.3 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:21:23,395 INFO ]: Boogie Preprocessor took 37.05 ms. Allocated memory is still 309.3 MB. Free memory was 261.6 MB in the beginning and 260.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-26 18:21:23,395 INFO ]: RCFGBuilder took 261.23 ms. Allocated memory is still 309.3 MB. Free memory was 260.6 MB in the beginning and 252.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. [2018-06-26 18:21:23,396 INFO ]: BlockEncodingV2 took 120.85 ms. Allocated memory is still 309.3 MB. Free memory was 252.6 MB in the beginning and 248.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:21:23,396 INFO ]: TraceAbstraction took 820.91 ms. Allocated memory is still 309.3 MB. Free memory was 248.6 MB in the beginning and 223.5 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:21:23,406 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 16 locations, 20 edges - StatisticsResult: Encoded RCFG 8 locations, 10 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 45.60 ms. Allocated memory is still 309.3 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.05 ms. Allocated memory is still 309.3 MB. Free memory was 261.6 MB in the beginning and 260.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 261.23 ms. Allocated memory is still 309.3 MB. Free memory was 260.6 MB in the beginning and 252.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 120.85 ms. Allocated memory is still 309.3 MB. Free memory was 252.6 MB in the beginning and 248.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 820.91 ms. Allocated memory is still 309.3 MB. Free memory was 248.6 MB in the beginning and 223.5 MB in the end (delta: 25.0 MB). Peak memory consumption was 25.0 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, 0.7s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 4 SDslu, 15 SDs, 0 SdLazy, 15 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 491 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 8/8 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/exc-fact.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-21-23-420.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/exc-fact.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-21-23-420.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/exc-fact.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-21-23-420.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/exc-fact.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-21-23-420.csv Received shutdown request...