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_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_3_e3_207.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 17:23:55,651 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 17:23:55,654 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 17:23:55,668 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 17:23:55,668 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 17:23:55,669 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 17:23:55,670 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 17:23:55,674 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 17:23:55,675 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 17:23:55,677 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 17:23:55,678 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 17:23:55,678 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 17:23:55,679 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 17:23:55,682 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 17:23:55,683 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 17:23:55,683 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 17:23:55,685 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 17:23:55,694 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 17:23:55,695 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 17:23:55,696 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 17:23:55,699 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 17:23:55,702 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 17:23:55,702 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 17:23:55,702 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 17:23:55,705 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 17:23:55,706 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 17:23:55,707 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 17:23:55,707 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 17:23:55,708 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 17:23:55,708 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 17:23:55,711 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 17:23:55,712 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 17:23:55,712 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 17:23:55,712 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 17:23:55,713 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 17:23:55,713 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 17:23:55,734 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 17:23:55,734 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 17:23:55,735 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 17:23:55,735 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 17:23:55,736 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 17:23:55,736 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 17:23:55,736 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 17:23:55,736 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 17:23:55,737 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 17:23:55,738 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 17:23:55,738 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 17:23:55,738 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 17:23:55,738 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 17:23:55,738 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 17:23:55,738 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 17:23:55,739 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 17:23:55,739 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 17:23:55,739 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 17:23:55,739 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 17:23:55,740 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 17:23:55,740 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 17:23:55,783 INFO ]: Repository-Root is: /tmp [2018-06-22 17:23:55,797 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 17:23:55,800 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 17:23:55,801 INFO ]: Initializing SmtParser... [2018-06-22 17:23:55,801 INFO ]: SmtParser initialized [2018-06-22 17:23:55,802 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_3_e3_207.smt2 [2018-06-22 17:23:55,803 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 17:23:55,879 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_3_e3_207.smt2 unknown [2018-06-22 17:23:56,064 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/durationThm_3_e3_207.smt2 [2018-06-22 17:23:56,069 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 17:23:56,075 INFO ]: Walking toolchain with 4 elements. [2018-06-22 17:23:56,075 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 17:23:56,075 INFO ]: Initializing ChcToBoogie... [2018-06-22 17:23:56,075 INFO ]: ChcToBoogie initialized [2018-06-22 17:23:56,082 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:23:56" (1/1) ... [2018-06-22 17:23:56,128 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:56 Unit [2018-06-22 17:23:56,131 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 17:23:56,131 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 17:23:56,131 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 17:23:56,132 INFO ]: Boogie Preprocessor initialized [2018-06-22 17:23:56,153 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:56" (1/1) ... [2018-06-22 17:23:56,153 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:56" (1/1) ... [2018-06-22 17:23:56,161 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:56" (1/1) ... [2018-06-22 17:23:56,161 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:56" (1/1) ... [2018-06-22 17:23:56,164 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:56" (1/1) ... [2018-06-22 17:23:56,166 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:56" (1/1) ... [2018-06-22 17:23:56,167 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:56" (1/1) ... [2018-06-22 17:23:56,168 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 17:23:56,172 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 17:23:56,172 INFO ]: Initializing RCFGBuilder... [2018-06-22 17:23:56,172 INFO ]: RCFGBuilder initialized [2018-06-22 17:23:56,173 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:56" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 17:23:56,181 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 17:23:56,181 INFO ]: Found specification of procedure False [2018-06-22 17:23:56,181 INFO ]: Found implementation of procedure False [2018-06-22 17:23:56,181 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 17:23:56,181 INFO ]: Found specification of procedure state [2018-06-22 17:23:56,181 INFO ]: Found implementation of procedure state [2018-06-22 17:23:56,181 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 17:23:56,181 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 17:23:56,181 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 17:23:56,373 INFO ]: Using library mode [2018-06-22 17:23:56,374 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:23:56 BoogieIcfgContainer [2018-06-22 17:23:56,374 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 17:23:56,375 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 17:23:56,375 INFO ]: Initializing TraceAbstraction... [2018-06-22 17:23:56,383 INFO ]: TraceAbstraction initialized [2018-06-22 17:23:56,384 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:23:56" (1/3) ... [2018-06-22 17:23:56,384 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f29d9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:23:56, skipping insertion in model container [2018-06-22 17:23:56,385 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:23:56" (2/3) ... [2018-06-22 17:23:56,385 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f29d9cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:23:56, skipping insertion in model container [2018-06-22 17:23:56,385 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:23:56" (3/3) ... [2018-06-22 17:23:56,387 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 17:23:56,417 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 17:23:56,428 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 17:23:56,491 INFO ]: Using default assertion order modulation [2018-06-22 17:23:56,492 INFO ]: Interprodecural is true [2018-06-22 17:23:56,492 INFO ]: Hoare is false [2018-06-22 17:23:56,492 INFO ]: Compute interpolants for FPandBP [2018-06-22 17:23:56,492 INFO ]: Backedges is TWOTRACK [2018-06-22 17:23:56,492 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 17:23:56,492 INFO ]: Difference is false [2018-06-22 17:23:56,492 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 17:23:56,492 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 17:23:56,509 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 17:23:56,522 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 17:23:56,523 INFO ]: Found error trace [2018-06-22 17:23:56,524 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:23:56,524 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:23:56,529 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 17:23:56,531 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:23:56,532 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:23:56,565 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:23:56,565 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:23:56,565 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:23:56,618 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:23:56,739 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 17:23:56,741 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 17:23:56,741 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 17:23:56,742 INFO ]: Interpolant automaton has 4 states [2018-06-22 17:23:56,755 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 17:23:56,756 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:23:56,757 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 17:23:56,869 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:23:56,869 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 17:23:56,870 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 17:23:56,871 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 17:23:56,872 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:23:56,885 INFO ]: With dead ends: 13 [2018-06-22 17:23:56,885 INFO ]: Without dead ends: 13 [2018-06-22 17:23:56,887 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:23:56,901 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 17:23:56,936 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 17:23:56,937 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 17:23:56,938 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 17:23:56,939 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 17:23:56,939 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:23:56,939 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 17:23:56,939 INFO ]: Interpolant automaton has 4 states. [2018-06-22 17:23:56,939 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 17:23:56,941 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 17:23:56,941 INFO ]: Found error trace [2018-06-22 17:23:56,941 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:23:56,942 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:23:56,942 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 17:23:56,942 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:23:56,942 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:23:56,943 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:23:56,943 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:23:56,943 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:23:57,012 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:23:57,386 WARN ]: Spent 149.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 11 [2018-06-22 17:23:57,502 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:23:57,503 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:23:57,503 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 [2018-06-22 17:23:57,511 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:23:57,579 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:23:57,589 INFO ]: Computing forward predicates... [2018-06-22 17:23:57,965 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:23:58,000 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:23:58,000 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 17:23:58,001 INFO ]: Interpolant automaton has 7 states [2018-06-22 17:23:58,001 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 17:23:58,001 INFO ]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-22 17:23:58,001 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 7 states. [2018-06-22 17:23:58,232 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:23:58,232 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 17:23:58,233 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 17:23:58,233 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 17:23:58,233 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:23:58,234 INFO ]: With dead ends: 15 [2018-06-22 17:23:58,234 INFO ]: Without dead ends: 15 [2018-06-22 17:23:58,234 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-22 17:23:58,235 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 17:23:58,237 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 17:23:58,237 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 17:23:58,238 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 17:23:58,238 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 17:23:58,238 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:23:58,238 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 17:23:58,238 INFO ]: Interpolant automaton has 7 states. [2018-06-22 17:23:58,238 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 17:23:58,238 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 17:23:58,238 INFO ]: Found error trace [2018-06-22 17:23:58,238 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:23:58,239 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:23:58,239 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 17:23:58,239 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:23:58,239 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:23:58,240 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:23:58,240 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:23:58,240 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:23:58,280 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:23:58,624 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 21 [2018-06-22 17:23:58,869 WARN ]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 17:23:59,008 INFO ]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 17:23:59,008 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:23:59,008 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 17:23:59,021 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 17:23:59,096 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 17:23:59,096 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:23:59,100 INFO ]: Computing forward predicates... [2018-06-22 17:24:00,054 INFO ]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 17:24:00,074 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:24:00,075 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-22 17:24:00,075 INFO ]: Interpolant automaton has 11 states [2018-06-22 17:24:00,075 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 17:24:00,075 INFO ]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-06-22 17:24:00,075 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-22 17:24:00,342 WARN ]: Spent 231.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2018-06-22 17:24:00,506 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2018-06-22 17:24:00,512 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:24:00,512 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 17:24:00,513 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 17:24:00,513 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 17:24:00,513 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:24:00,513 INFO ]: With dead ends: 11 [2018-06-22 17:24:00,513 INFO ]: Without dead ends: 0 [2018-06-22 17:24:00,514 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2018-06-22 17:24:00,514 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 17:24:00,514 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 17:24:00,514 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 17:24:00,514 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 17:24:00,514 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 17:24:00,514 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:24:00,514 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 17:24:00,514 INFO ]: Interpolant automaton has 11 states. [2018-06-22 17:24:00,514 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 17:24:00,514 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 17:24:00,520 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:24:00 BoogieIcfgContainer [2018-06-22 17:24:00,520 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 17:24:00,521 INFO ]: Toolchain (without parser) took 4451.61 ms. Allocated memory was 308.3 MB in the beginning and 339.7 MB in the end (delta: 31.5 MB). Free memory was 261.8 MB in the beginning and 274.6 MB in the end (delta: -12.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 3.6 GB. [2018-06-22 17:24:00,522 INFO ]: SmtParser took 0.62 ms. Allocated memory is still 308.3 MB. Free memory is still 273.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 17:24:00,522 INFO ]: ChcToBoogie took 55.93 ms. Allocated memory is still 308.3 MB. Free memory was 260.8 MB in the beginning and 259.8 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. [2018-06-22 17:24:00,522 INFO ]: Boogie Preprocessor took 37.08 ms. Allocated memory is still 308.3 MB. Free memory was 259.8 MB in the beginning and 257.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:24:00,523 INFO ]: RCFGBuilder took 202.35 ms. Allocated memory is still 308.3 MB. Free memory was 257.8 MB in the beginning and 247.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:24:00,523 INFO ]: TraceAbstraction took 4144.54 ms. Allocated memory was 308.3 MB in the beginning and 339.7 MB in the end (delta: 31.5 MB). Free memory was 247.8 MB in the beginning and 274.6 MB in the end (delta: -26.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 3.6 GB. [2018-06-22 17:24:00,527 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.62 ms. Allocated memory is still 308.3 MB. Free memory is still 273.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 55.93 ms. Allocated memory is still 308.3 MB. Free memory was 260.8 MB in the beginning and 259.8 MB in the end (delta: 996.3 kB). Peak memory consumption was 996.3 kB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.08 ms. Allocated memory is still 308.3 MB. Free memory was 259.8 MB in the beginning and 257.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 202.35 ms. Allocated memory is still 308.3 MB. Free memory was 257.8 MB in the beginning and 247.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4144.54 ms. Allocated memory was 308.3 MB in the beginning and 339.7 MB in the end (delta: 31.5 MB). Free memory was 247.8 MB in the beginning and 274.6 MB in the end (delta: -26.7 MB). Peak memory consumption was 4.7 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 4.0s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 29 SDtfs, 12 SDslu, 57 SDs, 0 SdLazy, 45 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 4080 SizeOfPredicates, 61 NumberOfNonLiveVariables, 395 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 12/26 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/durationThm_3_e3_207.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_17-24-00-538.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/durationThm_3_e3_207.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_17-24-00-538.csv Received shutdown request...