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/metros_2_e2_704_e2_13.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:09:45,541 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:09:45,543 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:09:45,557 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:09:45,558 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:09:45,559 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:09:45,562 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:09:45,567 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:09:45,568 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:09:45,569 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:09:45,570 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:09:45,570 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:09:45,571 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:09:45,572 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:09:45,581 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:09:45,582 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:09:45,584 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:09:45,588 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:09:45,589 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:09:45,590 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:09:45,594 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:09:45,597 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:09:45,597 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:09:45,597 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:09:45,598 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:09:45,672 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:09:45,673 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:09:45,673 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:09:45,674 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:09:45,674 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:09:45,675 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:09:45,676 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:09:45,676 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:09:45,677 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:09:45,677 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:09:45,678 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 19:09:45,691 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:09:45,692 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:09:45,692 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:09:45,692 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:09:45,693 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:09:45,693 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:09:45,693 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:09:45,694 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:09:45,694 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:09:45,694 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:09:45,694 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:09:45,694 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:09:45,695 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:09:45,695 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:09:45,695 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:09:45,695 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:09:45,695 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:09:45,696 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:09:45,696 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:09:45,697 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:09:45,697 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:09:45,755 INFO ]: Repository-Root is: /tmp [2018-06-22 19:09:45,774 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:09:45,868 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:09:45,869 INFO ]: Initializing SmtParser... [2018-06-22 19:09:45,869 INFO ]: SmtParser initialized [2018-06-22 19:09:45,870 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e2_704_e2_13.smt2 [2018-06-22 19:09:45,871 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 19:09:45,948 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e2_704_e2_13.smt2 unknown [2018-06-22 19:09:46,598 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/metros_2_e2_704_e2_13.smt2 [2018-06-22 19:09:46,611 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:09:46,622 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:09:46,622 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:09:46,623 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:09:46,623 INFO ]: ChcToBoogie initialized [2018-06-22 19:09:46,635 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:09:46" (1/1) ... [2018-06-22 19:09:46,721 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:09:46 Unit [2018-06-22 19:09:46,722 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:09:46,722 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:09:46,722 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:09:46,722 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:09:46,748 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:09:46" (1/1) ... [2018-06-22 19:09:46,749 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:09:46" (1/1) ... [2018-06-22 19:09:46,769 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:09:46" (1/1) ... [2018-06-22 19:09:46,769 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:09:46" (1/1) ... [2018-06-22 19:09:46,774 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:09:46" (1/1) ... [2018-06-22 19:09:46,775 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:09:46" (1/1) ... [2018-06-22 19:09:46,778 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:09:46" (1/1) ... [2018-06-22 19:09:46,793 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:09:46,793 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:09:46,793 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:09:46,793 INFO ]: RCFGBuilder initialized [2018-06-22 19:09:46,794 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:09:46" (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 19:09:46,821 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:09:46,821 INFO ]: Found specification of procedure False [2018-06-22 19:09:46,821 INFO ]: Found implementation of procedure False [2018-06-22 19:09:46,821 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:09:46,821 INFO ]: Found specification of procedure state [2018-06-22 19:09:46,821 INFO ]: Found implementation of procedure state [2018-06-22 19:09:46,821 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:09:46,821 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:09:46,821 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 19:09:47,144 INFO ]: Using library mode [2018-06-22 19:09:47,145 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:09:47 BoogieIcfgContainer [2018-06-22 19:09:47,145 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:09:47,147 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:09:47,147 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:09:47,153 INFO ]: TraceAbstraction initialized [2018-06-22 19:09:47,153 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:09:46" (1/3) ... [2018-06-22 19:09:47,154 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6234f70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:09:47, skipping insertion in model container [2018-06-22 19:09:47,154 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:09:46" (2/3) ... [2018-06-22 19:09:47,154 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6234f70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:09:47, skipping insertion in model container [2018-06-22 19:09:47,154 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:09:47" (3/3) ... [2018-06-22 19:09:47,157 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:09:47,167 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:09:47,177 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:09:47,222 INFO ]: Using default assertion order modulation [2018-06-22 19:09:47,222 INFO ]: Interprodecural is true [2018-06-22 19:09:47,222 INFO ]: Hoare is false [2018-06-22 19:09:47,222 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:09:47,222 INFO ]: Backedges is TWOTRACK [2018-06-22 19:09:47,222 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:09:47,222 INFO ]: Difference is false [2018-06-22 19:09:47,222 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:09:47,223 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:09:47,235 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:09:47,246 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:09:47,247 INFO ]: Found error trace [2018-06-22 19:09:47,247 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:09:47,248 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:09:47,253 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:09:47,255 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:09:47,255 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:09:47,291 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:09:47,291 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:09:47,291 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:09:47,388 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:09:47,565 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:09:47,566 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:09:47,566 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:09:47,568 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:09:47,578 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:09:47,578 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:09:47,580 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:09:47,733 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:09:47,734 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:09:47,734 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:09:47,735 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:09:47,736 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:09:47,750 INFO ]: With dead ends: 13 [2018-06-22 19:09:47,750 INFO ]: Without dead ends: 13 [2018-06-22 19:09:47,755 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 19:09:47,769 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:09:47,789 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:09:47,790 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:09:47,790 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:09:47,791 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:09:47,791 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:09:47,791 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:09:47,791 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:09:47,791 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:09:47,792 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:09:47,792 INFO ]: Found error trace [2018-06-22 19:09:47,792 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:09:47,793 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:09:47,793 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:09:47,793 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:09:47,793 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:09:47,794 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:09:47,794 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:09:47,794 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:09:47,903 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:09:48,538 WARN ]: Spent 418.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 18 [2018-06-22 19:09:48,608 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:09:48,608 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:09:48,608 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 19:09:48,616 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:09:48,755 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:09:48,767 INFO ]: Computing forward predicates... [2018-06-22 19:09:49,357 WARN ]: Spent 333.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10 [2018-06-22 19:09:49,560 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:09:49,595 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:09:49,596 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 19:09:49,596 INFO ]: Interpolant automaton has 9 states [2018-06-22 19:09:49,596 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 19:09:49,596 INFO ]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-06-22 19:09:49,597 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 19:09:50,140 WARN ]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-06-22 19:09:50,654 WARN ]: Spent 227.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2018-06-22 19:09:50,843 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:09:50,853 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:09:50,854 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:09:50,854 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 19:09:50,854 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:09:50,855 INFO ]: With dead ends: 15 [2018-06-22 19:09:50,855 INFO ]: Without dead ends: 15 [2018-06-22 19:09:50,856 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:09:50,856 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:09:50,858 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:09:50,858 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:09:50,859 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:09:50,859 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:09:50,859 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:09:50,859 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:09:50,859 INFO ]: Interpolant automaton has 9 states. [2018-06-22 19:09:50,859 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:09:50,860 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:09:50,860 INFO ]: Found error trace [2018-06-22 19:09:50,860 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:09:50,860 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:09:50,860 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:09:50,860 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:09:50,860 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:09:50,861 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:09:50,861 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:09:50,861 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:09:50,944 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:09:51,376 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:09:51,376 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:09:51,376 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 19:09:51,384 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:09:51,535 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:09:51,535 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:09:51,541 INFO ]: Computing forward predicates... [2018-06-22 19:09:51,735 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:09:51,757 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:09:51,758 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 19:09:51,758 INFO ]: Interpolant automaton has 13 states [2018-06-22 19:09:51,758 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 19:09:51,758 INFO ]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2018-06-22 19:09:51,758 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 19:09:51,891 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2018-06-22 19:09:52,143 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:09:52,218 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:09:52,219 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:09:52,219 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 19:09:52,219 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:09:52,220 INFO ]: With dead ends: 17 [2018-06-22 19:09:52,220 INFO ]: Without dead ends: 17 [2018-06-22 19:09:52,221 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:09:52,221 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:09:52,223 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:09:52,224 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:09:52,224 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:09:52,224 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:09:52,224 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:09:52,224 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:09:52,224 INFO ]: Interpolant automaton has 13 states. [2018-06-22 19:09:52,225 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:09:52,225 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:09:52,225 INFO ]: Found error trace [2018-06-22 19:09:52,225 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:09:52,225 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:09:52,225 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:09:52,225 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:09:52,226 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:09:52,226 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:09:52,226 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:09:52,226 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:09:52,310 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:09:52,854 WARN ]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-06-22 19:09:53,254 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:09:53,254 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:09:53,254 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) [2018-06-22 19:09:53,268 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:09:53,417 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:09:53,417 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:09:53,423 INFO ]: Computing forward predicates... [2018-06-22 19:09:53,657 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:09:53,678 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:09:53,678 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:09:53,678 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:09:53,678 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:09:53,678 INFO ]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:09:53,678 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:09:53,888 WARN ]: Spent 145.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2018-06-22 19:09:54,080 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2018-06-22 19:09:54,352 WARN ]: Spent 242.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2018-06-22 19:09:54,525 WARN ]: Spent 128.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2018-06-22 19:09:54,586 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:09:54,586 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 19:09:54,587 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 19:09:54,587 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:09:54,587 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:09:54,588 INFO ]: With dead ends: 19 [2018-06-22 19:09:54,588 INFO ]: Without dead ends: 19 [2018-06-22 19:09:54,588 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2018-06-22 19:09:54,588 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 19:09:54,593 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 19:09:54,593 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 19:09:54,593 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 19:09:54,593 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 19:09:54,593 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:09:54,593 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 19:09:54,593 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:09:54,594 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 19:09:54,594 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 19:09:54,594 INFO ]: Found error trace [2018-06-22 19:09:54,594 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:09:54,594 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:09:54,594 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 19:09:54,594 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:09:54,594 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:09:54,595 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:09:54,595 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:09:54,595 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:09:54,842 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:09:56,178 WARN ]: Spent 1.03 s on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2018-06-22 19:09:56,552 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2018-06-22 19:09:56,696 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:09:56,696 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:09:56,696 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:09:56,701 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 19:09:56,844 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 19:09:56,844 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:09:56,858 INFO ]: Computing forward predicates... [2018-06-22 19:09:57,796 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 23 [2018-06-22 19:09:58,235 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 19:09:58,255 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:09:58,256 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 19:09:58,256 INFO ]: Interpolant automaton has 21 states [2018-06-22 19:09:58,256 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 19:09:58,256 INFO ]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2018-06-22 19:09:58,256 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 19:09:58,587 WARN ]: Spent 268.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 107 [2018-06-22 19:09:59,040 WARN ]: Spent 329.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 106 [2018-06-22 19:09:59,524 WARN ]: Spent 433.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 107 [2018-06-22 19:10:00,384 WARN ]: Spent 796.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 110 [2018-06-22 19:10:00,661 WARN ]: Spent 233.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 93 [2018-06-22 19:10:00,812 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:10:00,812 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 19:10:00,812 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 19:10:00,812 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 19:10:00,812 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:10:00,813 INFO ]: With dead ends: 21 [2018-06-22 19:10:00,813 INFO ]: Without dead ends: 21 [2018-06-22 19:10:00,814 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2018-06-22 19:10:00,814 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 19:10:00,817 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 19:10:00,817 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 19:10:00,818 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 19:10:00,818 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 19:10:00,818 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:10:00,818 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 19:10:00,818 INFO ]: Interpolant automaton has 21 states. [2018-06-22 19:10:00,818 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 19:10:00,819 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 19:10:00,819 INFO ]: Found error trace [2018-06-22 19:10:00,819 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:10:00,819 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:10:00,819 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 5 times [2018-06-22 19:10:00,819 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:10:00,819 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:10:00,820 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:10:00,820 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:10:00,820 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:10:00,935 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:10:01,553 WARN ]: Spent 297.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2018-06-22 19:10:01,839 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2018-06-22 19:10:02,321 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2018-06-22 19:10:02,568 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2018-06-22 19:10:02,832 WARN ]: Spent 172.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 24 [2018-06-22 19:10:02,851 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 19:10:02,851 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:10:02,851 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:10:02,858 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 19:10:03,053 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 19:10:03,053 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:10:03,066 INFO ]: Computing forward predicates... [2018-06-22 19:10:04,362 WARN ]: Spent 161.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2018-06-22 19:10:04,592 WARN ]: Spent 138.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2018-06-22 19:10:04,968 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 23 [2018-06-22 19:10:05,523 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 18 [2018-06-22 19:10:05,614 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 19:10:05,636 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:10:05,636 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2018-06-22 19:10:05,636 INFO ]: Interpolant automaton has 25 states [2018-06-22 19:10:05,636 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 19:10:05,637 INFO ]: CoverageRelationStatistics Valid=56, Invalid=544, Unknown=0, NotChecked=0, Total=600 [2018-06-22 19:10:05,637 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 25 states. [2018-06-22 19:10:06,311 WARN ]: Spent 615.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 140 [2018-06-22 19:10:07,040 WARN ]: Spent 550.00 ms on a formula simplification. DAG size of input: 225 DAG size of output: 118 [2018-06-22 19:10:08,152 WARN ]: Spent 880.00 ms on a formula simplification. DAG size of input: 215 DAG size of output: 128 [2018-06-22 19:10:09,030 WARN ]: Spent 691.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 141 [2018-06-22 19:10:09,623 WARN ]: Spent 527.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 135 [2018-06-22 19:10:10,247 WARN ]: Spent 560.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 140 [2018-06-22 19:10:10,267 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:10:10,267 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:10:10,267 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 19:10:10,267 INFO ]: Start accepts. Automaton has 25 states. Word has length 29 [2018-06-22 19:10:10,268 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:10:10,268 INFO ]: With dead ends: 17 [2018-06-22 19:10:10,268 INFO ]: Without dead ends: 0 [2018-06-22 19:10:10,269 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=185, Invalid=807, Unknown=0, NotChecked=0, Total=992 [2018-06-22 19:10:10,269 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:10:10,269 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:10:10,269 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:10:10,269 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:10:10,269 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-22 19:10:10,269 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:10:10,269 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:10:10,269 INFO ]: Interpolant automaton has 25 states. [2018-06-22 19:10:10,269 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:10:10,269 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:10:10,277 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:10:10 BoogieIcfgContainer [2018-06-22 19:10:10,277 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:10:10,278 INFO ]: Toolchain (without parser) took 23666.37 ms. Allocated memory was 304.6 MB in the beginning and 588.8 MB in the end (delta: 284.2 MB). Free memory was 246.0 MB in the beginning and 204.9 MB in the end (delta: 41.1 MB). Peak memory consumption was 325.3 MB. Max. memory is 3.6 GB. [2018-06-22 19:10:10,279 INFO ]: SmtParser took 0.19 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:10:10,279 INFO ]: ChcToBoogie took 99.44 ms. Allocated memory is still 304.6 MB. Free memory was 246.0 MB in the beginning and 244.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:10:10,279 INFO ]: Boogie Preprocessor took 70.40 ms. Allocated memory is still 304.6 MB. Free memory was 244.1 MB in the beginning and 242.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:10:10,280 INFO ]: RCFGBuilder took 352.10 ms. Allocated memory is still 304.6 MB. Free memory was 242.0 MB in the beginning and 218.0 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:10:10,280 INFO ]: TraceAbstraction took 23130.56 ms. Allocated memory was 304.6 MB in the beginning and 588.8 MB in the end (delta: 284.2 MB). Free memory was 218.0 MB in the beginning and 204.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 297.2 MB. Max. memory is 3.6 GB. [2018-06-22 19:10:10,287 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.19 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 99.44 ms. Allocated memory is still 304.6 MB. Free memory was 246.0 MB in the beginning and 244.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 70.40 ms. Allocated memory is still 304.6 MB. Free memory was 244.1 MB in the beginning and 242.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 352.10 ms. Allocated memory is still 304.6 MB. Free memory was 242.0 MB in the beginning and 218.0 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 23130.56 ms. Allocated memory was 304.6 MB in the beginning and 588.8 MB in the end (delta: 284.2 MB). Free memory was 218.0 MB in the beginning and 204.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 297.2 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, 23.0s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 10.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 130 SDslu, 375 SDs, 0 SdLazy, 315 SolverSat, 175 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 16.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=5, 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, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 11.2s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 87024 SizeOfPredicates, 188 NumberOfNonLiveVariables, 4435 ConjunctsInSsa, 342 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 70/250 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/metros_2_e2_704_e2_13.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-10-10-298.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/metros_2_e2_704_e2_13.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-10-10-298.csv Received shutdown request...