java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2_e8_449_e7_353.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 09:42:26,547 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 09:42:26,549 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 09:42:26,560 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 09:42:26,560 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 09:42:26,561 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 09:42:26,562 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 09:42:26,564 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 09:42:26,566 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 09:42:26,567 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 09:42:26,568 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 09:42:26,568 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 09:42:26,569 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 09:42:26,570 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 09:42:26,571 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 09:42:26,572 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 09:42:26,573 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 09:42:26,575 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 09:42:26,577 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 09:42:26,578 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 09:42:26,579 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 09:42:26,582 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 09:42:26,582 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 09:42:26,582 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 09:42:26,583 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 09:42:26,584 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 09:42:26,585 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 09:42:26,586 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 09:42:26,587 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 09:42:26,587 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 09:42:26,588 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 09:42:26,589 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 09:42:26,589 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 09:42:26,590 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 09:42:26,591 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 09:42:26,591 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 09:42:26,605 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 09:42:26,605 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 09:42:26,605 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 09:42:26,606 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 09:42:26,607 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 09:42:26,607 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 09:42:26,607 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 09:42:26,608 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 09:42:26,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 09:42:26,608 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 09:42:26,608 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 09:42:26,609 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 09:42:26,609 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 09:42:26,609 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 09:42:26,609 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 09:42:26,610 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 09:42:26,610 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 09:42:26,611 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 09:42:26,612 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 09:42:26,657 INFO ]: Repository-Root is: /tmp [2018-06-22 09:42:26,679 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 09:42:26,682 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 09:42:26,686 INFO ]: Initializing SmtParser... [2018-06-22 09:42:26,686 INFO ]: SmtParser initialized [2018-06-22 09:42:26,687 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2_e8_449_e7_353.smt2 [2018-06-22 09:42:26,688 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 [2018-06-22 09:42:26,781 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2_e8_449_e7_353.smt2 unknown [2018-06-22 09:42:27,053 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/speed2_e8_449_e7_353.smt2 [2018-06-22 09:42:27,061 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 09:42:27,073 INFO ]: Walking toolchain with 4 elements. [2018-06-22 09:42:27,074 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 09:42:27,074 INFO ]: Initializing ChcToBoogie... [2018-06-22 09:42:27,074 INFO ]: ChcToBoogie initialized [2018-06-22 09:42:27,077 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:42:27" (1/1) ... [2018-06-22 09:42:27,145 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:42:27 Unit [2018-06-22 09:42:27,145 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 09:42:27,146 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 09:42:27,146 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 09:42:27,146 INFO ]: Boogie Preprocessor initialized [2018-06-22 09:42:27,166 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:42:27" (1/1) ... [2018-06-22 09:42:27,166 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:42:27" (1/1) ... [2018-06-22 09:42:27,174 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:42:27" (1/1) ... [2018-06-22 09:42:27,174 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:42:27" (1/1) ... [2018-06-22 09:42:27,178 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:42:27" (1/1) ... [2018-06-22 09:42:27,180 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:42:27" (1/1) ... [2018-06-22 09:42:27,192 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:42:27" (1/1) ... [2018-06-22 09:42:27,194 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 09:42:27,195 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 09:42:27,195 INFO ]: Initializing RCFGBuilder... [2018-06-22 09:42:27,195 INFO ]: RCFGBuilder initialized [2018-06-22 09:42:27,196 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:42:27" (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) [2018-06-22 09:42:27,224 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 09:42:27,224 INFO ]: Found specification of procedure gotoProc [2018-06-22 09:42:27,224 INFO ]: Found implementation of procedure gotoProc [2018-06-22 09:42:27,224 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 09:42:27,224 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 09:42:27,224 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 [2018-06-22 09:42:27,517 INFO ]: Using library mode [2018-06-22 09:42:27,517 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:42:27 BoogieIcfgContainer [2018-06-22 09:42:27,517 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 09:42:27,519 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 09:42:27,519 INFO ]: Initializing TraceAbstraction... [2018-06-22 09:42:27,522 INFO ]: TraceAbstraction initialized [2018-06-22 09:42:27,522 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 09:42:27" (1/3) ... [2018-06-22 09:42:27,523 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d86122c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 09:42:27, skipping insertion in model container [2018-06-22 09:42:27,523 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 09:42:27" (2/3) ... [2018-06-22 09:42:27,523 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d86122c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 09:42:27, skipping insertion in model container [2018-06-22 09:42:27,523 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 09:42:27" (3/3) ... [2018-06-22 09:42:27,526 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 09:42:27,535 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 09:42:27,544 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 09:42:27,584 INFO ]: Using default assertion order modulation [2018-06-22 09:42:27,584 INFO ]: Interprodecural is true [2018-06-22 09:42:27,584 INFO ]: Hoare is false [2018-06-22 09:42:27,584 INFO ]: Compute interpolants for FPandBP [2018-06-22 09:42:27,584 INFO ]: Backedges is TWOTRACK [2018-06-22 09:42:27,584 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 09:42:27,584 INFO ]: Difference is false [2018-06-22 09:42:27,584 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 09:42:27,584 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 09:42:27,599 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 09:42:27,607 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 09:42:27,607 INFO ]: Found error trace [2018-06-22 09:42:27,608 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:42:27,608 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:42:27,612 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 09:42:27,614 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:42:27,614 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:42:27,647 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:42:27,648 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:42:27,648 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:42:27,728 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:42:27,822 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:42:27,824 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 09:42:27,824 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 09:42:27,825 INFO ]: Interpolant automaton has 3 states [2018-06-22 09:42:27,836 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 09:42:27,837 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 09:42:27,840 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 09:42:27,915 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:42:27,915 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 09:42:27,916 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 09:42:27,917 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 09:42:27,918 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:42:27,927 INFO ]: With dead ends: 9 [2018-06-22 09:42:27,927 INFO ]: Without dead ends: 9 [2018-06-22 09:42:27,932 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 [2018-06-22 09:42:27,946 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 09:42:27,973 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 09:42:27,974 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 09:42:27,975 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 09:42:27,976 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 09:42:27,976 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:42:27,976 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 09:42:27,976 INFO ]: Interpolant automaton has 3 states. [2018-06-22 09:42:27,976 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 09:42:27,977 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 09:42:27,977 INFO ]: Found error trace [2018-06-22 09:42:27,977 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:42:27,977 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:42:27,977 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 09:42:27,977 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:42:27,977 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:42:27,978 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:42:27,978 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:42:27,978 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:42:28,048 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:42:28,125 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:42:28,126 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:42:28,126 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) [2018-06-22 09:42:28,141 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:42:28,226 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:42:28,237 INFO ]: Computing forward predicates... [2018-06-22 09:42:28,423 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:42:28,444 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:42:28,444 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 09:42:28,445 INFO ]: Interpolant automaton has 5 states [2018-06-22 09:42:28,445 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 09:42:28,445 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 09:42:28,445 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 09:42:28,486 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:42:28,486 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 09:42:28,486 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 09:42:28,486 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 09:42:28,486 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:42:28,486 INFO ]: With dead ends: 10 [2018-06-22 09:42:28,486 INFO ]: Without dead ends: 10 [2018-06-22 09:42:28,487 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 09:42:28,487 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 09:42:28,488 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 09:42:28,488 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 09:42:28,488 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 09:42:28,488 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 09:42:28,488 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:42:28,488 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 09:42:28,488 INFO ]: Interpolant automaton has 5 states. [2018-06-22 09:42:28,488 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 09:42:28,489 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 09:42:28,489 INFO ]: Found error trace [2018-06-22 09:42:28,489 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 09:42:28,489 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 09:42:28,489 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 09:42:28,489 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 09:42:28,489 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 09:42:28,491 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:42:28,491 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 09:42:28,491 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 09:42:28,559 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:42:28,785 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:42:28,786 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 09:42:28,786 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 09:42:28,816 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 09:42:28,910 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 09:42:28,910 INFO ]: Conjunction of SSA is unsat [2018-06-22 09:42:28,915 INFO ]: Computing forward predicates... [2018-06-22 09:42:30,030 WARN ]: Spent 409.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-06-22 09:42:30,280 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 09:42:30,301 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 09:42:30,301 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 09:42:30,302 INFO ]: Interpolant automaton has 8 states [2018-06-22 09:42:30,302 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 09:42:30,302 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 09:42:30,302 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 09:42:30,386 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 09:42:30,386 INFO ]: Finished difference Result 5 states and 4 transitions. [2018-06-22 09:42:30,387 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 09:42:30,387 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 09:42:30,387 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 09:42:30,387 INFO ]: With dead ends: 5 [2018-06-22 09:42:30,387 INFO ]: Without dead ends: 0 [2018-06-22 09:42:30,388 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-06-22 09:42:30,388 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 09:42:30,388 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 09:42:30,388 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 09:42:30,388 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 09:42:30,388 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-22 09:42:30,388 INFO ]: Finished accepts. word is rejected. [2018-06-22 09:42:30,388 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 09:42:30,388 INFO ]: Interpolant automaton has 8 states. [2018-06-22 09:42:30,388 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 09:42:30,388 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 09:42:30,394 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 09:42:30 BoogieIcfgContainer [2018-06-22 09:42:30,394 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 09:42:30,395 INFO ]: Toolchain (without parser) took 3332.97 ms. Allocated memory was 309.3 MB in the beginning and 329.3 MB in the end (delta: 19.9 MB). Free memory was 261.9 MB in the beginning and 233.1 MB in the end (delta: 28.7 MB). Peak memory consumption was 48.6 MB. Max. memory is 3.6 GB. [2018-06-22 09:42:30,396 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 09:42:30,396 INFO ]: ChcToBoogie took 71.80 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 258.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:42:30,397 INFO ]: Boogie Preprocessor took 48.60 ms. Allocated memory is still 309.3 MB. Free memory was 258.9 MB in the beginning and 257.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-22 09:42:30,398 INFO ]: RCFGBuilder took 322.43 ms. Allocated memory is still 309.3 MB. Free memory was 257.8 MB in the beginning and 243.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-22 09:42:30,398 INFO ]: TraceAbstraction took 2875.34 ms. Allocated memory was 309.3 MB in the beginning and 329.3 MB in the end (delta: 19.9 MB). Free memory was 243.8 MB in the beginning and 233.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 30.6 MB. Max. memory is 3.6 GB. [2018-06-22 09:42:30,402 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 71.80 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 258.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 48.60 ms. Allocated memory is still 309.3 MB. Free memory was 258.9 MB in the beginning and 257.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 322.43 ms. Allocated memory is still 309.3 MB. Free memory was 257.8 MB in the beginning and 243.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2875.34 ms. Allocated memory was 309.3 MB in the beginning and 329.3 MB in the end (delta: 19.9 MB). Free memory was 243.8 MB in the beginning and 233.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 30.6 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, 10 locations, 1 error locations. SAFE Result, 2.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 25 SDs, 0 SdLazy, 17 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, 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, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 567 SizeOfPredicates, 4 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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/speed2_e8_449_e7_353.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_09-42-30-422.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/speed2_e8_449_e7_353.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_09-42-30-422.csv Received shutdown request...