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/llreve-bench/smt2/loop__upcount.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 21:42:44,618 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 21:42:44,620 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 21:42:44,634 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 21:42:44,635 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 21:42:44,636 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 21:42:44,637 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 21:42:44,638 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 21:42:44,639 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 21:42:44,640 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 21:42:44,640 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 21:42:44,640 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 21:42:44,641 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 21:42:44,642 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 21:42:44,643 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 21:42:44,644 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 21:42:44,645 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 21:42:44,647 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 21:42:44,649 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 21:42:44,650 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 21:42:44,651 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 21:42:44,653 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 21:42:44,653 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 21:42:44,654 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 21:42:44,654 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 21:42:44,655 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 21:42:44,656 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 21:42:44,657 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 21:42:44,658 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 21:42:44,658 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 21:42:44,659 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 21:42:44,660 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 21:42:44,660 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 21:42:44,661 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 21:42:44,661 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 21:42:44,662 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 21:42:44,676 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 21:42:44,676 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 21:42:44,676 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 21:42:44,677 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 21:42:44,678 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 21:42:44,678 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 21:42:44,678 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 21:42:44,678 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 21:42:44,679 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 21:42:44,679 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 21:42:44,679 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 21:42:44,679 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 21:42:44,680 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:42:44,680 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 21:42:44,680 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 21:42:44,680 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 21:42:44,681 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 21:42:44,681 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 21:42:44,681 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 21:42:44,681 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 21:42:44,682 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 21:42:44,683 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 21:42:44,683 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 21:42:44,724 INFO ]: Repository-Root is: /tmp [2018-06-24 21:42:44,741 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 21:42:44,748 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 21:42:44,749 INFO ]: Initializing SmtParser... [2018-06-24 21:42:44,749 INFO ]: SmtParser initialized [2018-06-24 21:42:44,750 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/loop__upcount.smt2 [2018-06-24 21:42:44,751 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 21:42:44,840 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/loop__upcount.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@532e5b40 [2018-06-24 21:42:44,992 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/loop__upcount.smt2 [2018-06-24 21:42:44,996 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 21:42:45,011 INFO ]: Walking toolchain with 5 elements. [2018-06-24 21:42:45,012 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 21:42:45,012 INFO ]: Initializing ChcToBoogie... [2018-06-24 21:42:45,012 INFO ]: ChcToBoogie initialized [2018-06-24 21:42:45,015 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:42:44" (1/1) ... [2018-06-24 21:42:45,072 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:45 Unit [2018-06-24 21:42:45,072 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 21:42:45,073 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 21:42:45,073 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 21:42:45,073 INFO ]: Boogie Preprocessor initialized [2018-06-24 21:42:45,094 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:45" (1/1) ... [2018-06-24 21:42:45,095 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:45" (1/1) ... [2018-06-24 21:42:45,099 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:45" (1/1) ... [2018-06-24 21:42:45,100 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:45" (1/1) ... [2018-06-24 21:42:45,102 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:45" (1/1) ... [2018-06-24 21:42:45,104 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:45" (1/1) ... [2018-06-24 21:42:45,105 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:45" (1/1) ... [2018-06-24 21:42:45,106 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 21:42:45,107 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 21:42:45,107 INFO ]: Initializing RCFGBuilder... [2018-06-24 21:42:45,107 INFO ]: RCFGBuilder initialized [2018-06-24 21:42:45,108 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:45" (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) [2018-06-24 21:42:45,126 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 21:42:45,126 INFO ]: Found specification of procedure gotoProc [2018-06-24 21:42:45,126 INFO ]: Found implementation of procedure gotoProc [2018-06-24 21:42:45,126 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 21:42:45,126 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 21:42:45,126 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 21:42:45,410 INFO ]: Using library mode [2018-06-24 21:42:45,411 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:42:45 BoogieIcfgContainer [2018-06-24 21:42:45,411 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 21:42:45,412 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 21:42:45,412 INFO ]: Initializing BlockEncodingV2... [2018-06-24 21:42:45,412 INFO ]: BlockEncodingV2 initialized [2018-06-24 21:42:45,418 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:42:45" (1/1) ... [2018-06-24 21:42:45,441 INFO ]: Initial Icfg 10 locations, 12 edges [2018-06-24 21:42:45,443 INFO ]: Using Remove infeasible edges [2018-06-24 21:42:45,443 INFO ]: Using Maximize final states [2018-06-24 21:42:45,444 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 21:42:45,446 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 21:42:45,448 INFO ]: Using Remove sink states [2018-06-24 21:42:45,449 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 21:42:45,449 INFO ]: Using Use SBE [2018-06-24 21:42:45,458 INFO ]: SBE split 0 edges [2018-06-24 21:42:45,469 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 21:42:45,470 INFO ]: 0 new accepting states [2018-06-24 21:42:45,495 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-24 21:42:45,496 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:42:45,500 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 21:42:45,500 INFO ]: 0 new accepting states [2018-06-24 21:42:45,500 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 21:42:45,501 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 21:42:45,501 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-24 21:42:45,501 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:42:45 BasicIcfg [2018-06-24 21:42:45,501 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 21:42:45,505 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 21:42:45,505 INFO ]: Initializing TraceAbstraction... [2018-06-24 21:42:45,508 INFO ]: TraceAbstraction initialized [2018-06-24 21:42:45,509 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 09:42:44" (1/4) ... [2018-06-24 21:42:45,510 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1c80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 09:42:45, skipping insertion in model container [2018-06-24 21:42:45,510 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 09:42:45" (2/4) ... [2018-06-24 21:42:45,510 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1c80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:42:45, skipping insertion in model container [2018-06-24 21:42:45,510 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:42:45" (3/4) ... [2018-06-24 21:42:45,510 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b1c80b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:42:45, skipping insertion in model container [2018-06-24 21:42:45,510 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 09:42:45" (4/4) ... [2018-06-24 21:42:45,513 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 21:42:45,522 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 21:42:45,531 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 21:42:45,565 INFO ]: Using default assertion order modulation [2018-06-24 21:42:45,565 INFO ]: Interprodecural is true [2018-06-24 21:42:45,565 INFO ]: Hoare is false [2018-06-24 21:42:45,565 INFO ]: Compute interpolants for FPandBP [2018-06-24 21:42:45,565 INFO ]: Backedges is TWOTRACK [2018-06-24 21:42:45,565 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 21:42:45,565 INFO ]: Difference is false [2018-06-24 21:42:45,565 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 21:42:45,565 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 21:42:45,575 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 21:42:45,585 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 21:42:45,585 INFO ]: Found error trace [2018-06-24 21:42:45,586 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 21:42:45,586 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:45,591 INFO ]: Analyzing trace with hash 37311172, now seen corresponding path program 1 times [2018-06-24 21:42:45,592 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:45,592 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:45,624 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:45,624 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:45,624 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:45,668 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:45,755 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:45,757 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 21:42:45,757 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 21:42:45,760 INFO ]: Interpolant automaton has 3 states [2018-06-24 21:42:45,772 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 21:42:45,772 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:42:45,774 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 21:42:45,833 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:45,833 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-24 21:42:45,834 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 21:42:45,835 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 21:42:45,835 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:45,843 INFO ]: With dead ends: 7 [2018-06-24 21:42:45,843 INFO ]: Without dead ends: 7 [2018-06-24 21:42:45,845 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 21:42:45,858 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 21:42:45,889 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 21:42:45,890 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 21:42:45,891 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-24 21:42:45,892 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-24 21:42:45,892 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:45,892 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-24 21:42:45,892 INFO ]: Interpolant automaton has 3 states. [2018-06-24 21:42:45,892 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-24 21:42:45,892 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:42:45,892 INFO ]: Found error trace [2018-06-24 21:42:45,892 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:42:45,893 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:45,893 INFO ]: Analyzing trace with hash 1156290923, now seen corresponding path program 1 times [2018-06-24 21:42:45,893 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:45,893 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:45,897 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:45,897 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:45,897 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:45,916 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:46,103 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-24 21:42:46,235 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:46,235 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:42:46,235 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:42:46,244 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:46,267 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:46,274 INFO ]: Computing forward predicates... [2018-06-24 21:42:46,332 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:46,357 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:42:46,357 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-24 21:42:46,357 INFO ]: Interpolant automaton has 6 states [2018-06-24 21:42:46,358 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 21:42:46,358 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:42:46,358 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 6 states. [2018-06-24 21:42:46,566 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:46,566 INFO ]: Finished difference Result 10 states and 21 transitions. [2018-06-24 21:42:46,566 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 21:42:46,567 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-24 21:42:46,567 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:46,567 INFO ]: With dead ends: 10 [2018-06-24 21:42:46,567 INFO ]: Without dead ends: 10 [2018-06-24 21:42:46,568 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:42:46,568 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 21:42:46,570 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-24 21:42:46,570 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-24 21:42:46,570 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 21 transitions. [2018-06-24 21:42:46,570 INFO ]: Start accepts. Automaton has 10 states and 21 transitions. Word has length 6 [2018-06-24 21:42:46,570 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:46,570 INFO ]: Abstraction has 10 states and 21 transitions. [2018-06-24 21:42:46,570 INFO ]: Interpolant automaton has 6 states. [2018-06-24 21:42:46,570 INFO ]: Start isEmpty. Operand 10 states and 21 transitions. [2018-06-24 21:42:46,571 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 21:42:46,571 INFO ]: Found error trace [2018-06-24 21:42:46,571 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 21:42:46,571 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:46,571 INFO ]: Analyzing trace with hash 1156350505, now seen corresponding path program 1 times [2018-06-24 21:42:46,571 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:46,571 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:46,572 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:46,572 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:46,572 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:46,582 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:46,644 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:46,644 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:42:46,644 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-24 21:42:46,658 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:42:46,692 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:46,693 INFO ]: Computing forward predicates... [2018-06-24 21:42:46,821 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:46,840 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 21:42:46,841 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-24 21:42:46,841 INFO ]: Interpolant automaton has 5 states [2018-06-24 21:42:46,841 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 21:42:46,841 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-24 21:42:46,841 INFO ]: Start difference. First operand 10 states and 21 transitions. Second operand 5 states. [2018-06-24 21:42:46,910 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:46,910 INFO ]: Finished difference Result 14 states and 28 transitions. [2018-06-24 21:42:46,910 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 21:42:46,910 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 21:42:46,911 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:46,911 INFO ]: With dead ends: 14 [2018-06-24 21:42:46,911 INFO ]: Without dead ends: 14 [2018-06-24 21:42:46,911 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-24 21:42:46,912 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-24 21:42:46,914 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-24 21:42:46,914 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-24 21:42:46,914 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 28 transitions. [2018-06-24 21:42:46,914 INFO ]: Start accepts. Automaton has 14 states and 28 transitions. Word has length 6 [2018-06-24 21:42:46,914 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:46,914 INFO ]: Abstraction has 14 states and 28 transitions. [2018-06-24 21:42:46,914 INFO ]: Interpolant automaton has 5 states. [2018-06-24 21:42:46,914 INFO ]: Start isEmpty. Operand 14 states and 28 transitions. [2018-06-24 21:42:46,915 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 21:42:46,915 INFO ]: Found error trace [2018-06-24 21:42:46,915 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-24 21:42:46,915 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 21:42:46,915 INFO ]: Analyzing trace with hash 1484924836, now seen corresponding path program 2 times [2018-06-24 21:42:46,915 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 21:42:46,915 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 21:42:46,916 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:46,916 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 21:42:46,916 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 21:42:46,928 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:47,014 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:47,014 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 21:42:47,014 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 21:42:47,021 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 21:42:47,064 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 21:42:47,064 INFO ]: Conjunction of SSA is unsat [2018-06-24 21:42:47,067 INFO ]: Computing forward predicates... [2018-06-24 21:42:47,204 INFO ]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 21:42:47,226 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 21:42:47,226 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2018-06-24 21:42:47,226 INFO ]: Interpolant automaton has 7 states [2018-06-24 21:42:47,226 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 21:42:47,226 INFO ]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-24 21:42:47,226 INFO ]: Start difference. First operand 14 states and 28 transitions. Second operand 7 states. [2018-06-24 21:42:47,377 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 21:42:47,377 INFO ]: Finished difference Result 14 states and 25 transitions. [2018-06-24 21:42:47,378 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-24 21:42:47,378 INFO ]: Start accepts. Automaton has 7 states. Word has length 7 [2018-06-24 21:42:47,378 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 21:42:47,378 INFO ]: With dead ends: 14 [2018-06-24 21:42:47,378 INFO ]: Without dead ends: 0 [2018-06-24 21:42:47,379 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-06-24 21:42:47,379 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 21:42:47,379 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 21:42:47,379 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 21:42:47,379 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 21:42:47,379 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-06-24 21:42:47,379 INFO ]: Finished accepts. word is rejected. [2018-06-24 21:42:47,379 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 21:42:47,379 INFO ]: Interpolant automaton has 7 states. [2018-06-24 21:42:47,379 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 21:42:47,379 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 21:42:47,381 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 21:42:47,382 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 09:42:47 BasicIcfg [2018-06-24 21:42:47,382 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 21:42:47,383 INFO ]: Toolchain (without parser) took 2386.52 ms. Allocated memory was 306.2 MB in the beginning and 325.6 MB in the end (delta: 19.4 MB). Free memory was 262.5 MB in the beginning and 286.7 MB in the end (delta: -24.2 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:42:47,384 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:42:47,384 INFO ]: ChcToBoogie took 60.94 ms. Allocated memory is still 306.2 MB. Free memory was 262.5 MB in the beginning and 260.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:47,385 INFO ]: Boogie Preprocessor took 33.14 ms. Allocated memory is still 306.2 MB. Free memory was 260.6 MB in the beginning and 259.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 21:42:47,385 INFO ]: RCFGBuilder took 304.25 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 252.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:47,386 INFO ]: BlockEncodingV2 took 89.75 ms. Allocated memory is still 306.2 MB. Free memory was 252.5 MB in the beginning and 249.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 21:42:47,387 INFO ]: TraceAbstraction took 1877.79 ms. Allocated memory was 306.2 MB in the beginning and 325.6 MB in the end (delta: 19.4 MB). Free memory was 249.5 MB in the beginning and 286.7 MB in the end (delta: -37.2 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 21:42:47,390 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 12 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 60.94 ms. Allocated memory is still 306.2 MB. Free memory was 262.5 MB in the beginning and 260.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 33.14 ms. Allocated memory is still 306.2 MB. Free memory was 260.6 MB in the beginning and 259.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 304.25 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 252.5 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 89.75 ms. Allocated memory is still 306.2 MB. Free memory was 252.5 MB in the beginning and 249.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1877.79 ms. Allocated memory was 306.2 MB in the beginning and 325.6 MB in the end (delta: 19.4 MB). Free memory was 249.5 MB in the beginning and 286.7 MB in the end (delta: -37.2 MB). There was no memory consumed. 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, 6 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 16 SDtfs, 1 SDslu, 28 SDs, 0 SdLazy, 96 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 534 SizeOfPredicates, 6 NumberOfNonLiveVariables, 171 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 3/10 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/loop__upcount.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_21-42-47-403.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__upcount.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_21-42-47-403.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__upcount.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_21-42-47-403.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/loop__upcount.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_21-42-47-403.csv Received shutdown request...