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/two_counters.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:48:03,489 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:48:03,492 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:48:03,504 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:48:03,504 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:48:03,505 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:48:03,506 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:48:03,510 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:48:03,512 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:48:03,514 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:48:03,515 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:48:03,515 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:48:03,516 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:48:03,520 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:48:03,521 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:48:03,522 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:48:03,523 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:48:03,526 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:48:03,528 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:48:03,529 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:48:03,530 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:48:03,532 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:48:03,533 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:48:03,533 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:48:03,534 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:48:03,534 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:48:03,535 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:48:03,536 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:48:03,537 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:48:03,537 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:48:03,538 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:48:03,539 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:48:03,539 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:48:03,540 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:48:03,540 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:48:03,541 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 20:48:03,554 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:48:03,555 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:48:03,555 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:48:03,555 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:48:03,556 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:48:03,556 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:48:03,557 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:48:03,557 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:48:03,557 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:48:03,557 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:48:03,557 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:48:03,557 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:48:03,558 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:48:03,558 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:48:03,558 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:48:03,558 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:48:03,558 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:48:03,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:48:03,559 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:48:03,560 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:48:03,560 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:48:03,603 INFO ]: Repository-Root is: /tmp [2018-06-22 20:48:03,620 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:48:03,626 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:48:03,628 INFO ]: Initializing SmtParser... [2018-06-22 20:48:03,628 INFO ]: SmtParser initialized [2018-06-22 20:48:03,629 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/two_counters.smt2 [2018-06-22 20:48:03,630 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 20:48:03,720 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/two_counters.smt2 unknown [2018-06-22 20:48:03,944 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/two_counters.smt2 [2018-06-22 20:48:03,954 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:48:03,961 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:48:03,961 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:48:03,961 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:48:03,962 INFO ]: ChcToBoogie initialized [2018-06-22 20:48:03,968 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:48:03" (1/1) ... [2018-06-22 20:48:04,015 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:48:04 Unit [2018-06-22 20:48:04,015 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:48:04,015 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:48:04,015 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:48:04,015 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:48:04,039 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:48:04" (1/1) ... [2018-06-22 20:48:04,039 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:48:04" (1/1) ... [2018-06-22 20:48:04,052 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:48:04" (1/1) ... [2018-06-22 20:48:04,052 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:48:04" (1/1) ... [2018-06-22 20:48:04,054 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:48:04" (1/1) ... [2018-06-22 20:48:04,066 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:48:04" (1/1) ... [2018-06-22 20:48:04,067 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:48:04" (1/1) ... [2018-06-22 20:48:04,068 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:48:04,069 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:48:04,069 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:48:04,069 INFO ]: RCFGBuilder initialized [2018-06-22 20:48:04,070 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:48:04" (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 20:48:04,088 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:48:04,088 INFO ]: Found specification of procedure False [2018-06-22 20:48:04,088 INFO ]: Found implementation of procedure False [2018-06-22 20:48:04,088 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:48:04,088 INFO ]: Found specification of procedure state [2018-06-22 20:48:04,088 INFO ]: Found implementation of procedure state [2018-06-22 20:48:04,088 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:48:04,088 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:48:04,088 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 20:48:04,317 INFO ]: Using library mode [2018-06-22 20:48:04,318 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:48:04 BoogieIcfgContainer [2018-06-22 20:48:04,318 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:48:04,320 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:48:04,320 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:48:04,323 INFO ]: TraceAbstraction initialized [2018-06-22 20:48:04,324 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:48:03" (1/3) ... [2018-06-22 20:48:04,324 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fa8d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:48:04, skipping insertion in model container [2018-06-22 20:48:04,325 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:48:04" (2/3) ... [2018-06-22 20:48:04,325 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35fa8d5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:48:04, skipping insertion in model container [2018-06-22 20:48:04,325 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:48:04" (3/3) ... [2018-06-22 20:48:04,327 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:48:04,336 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:48:04,344 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:48:04,399 INFO ]: Using default assertion order modulation [2018-06-22 20:48:04,400 INFO ]: Interprodecural is true [2018-06-22 20:48:04,400 INFO ]: Hoare is false [2018-06-22 20:48:04,400 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:48:04,400 INFO ]: Backedges is TWOTRACK [2018-06-22 20:48:04,400 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:48:04,400 INFO ]: Difference is false [2018-06-22 20:48:04,400 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:48:04,400 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:48:04,420 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:48:04,438 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:48:04,438 INFO ]: Found error trace [2018-06-22 20:48:04,439 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:48:04,439 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:48:04,447 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 20:48:04,450 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:48:04,450 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:48:04,498 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:48:04,498 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:48:04,498 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:48:04,537 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:48:04,683 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:48:04,684 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:48:04,685 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:48:04,686 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:48:04,696 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:48:04,696 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:48:04,698 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:48:04,790 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:48:04,790 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:48:04,791 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:48:04,792 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:48:04,792 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:48:04,801 INFO ]: With dead ends: 13 [2018-06-22 20:48:04,801 INFO ]: Without dead ends: 13 [2018-06-22 20:48:04,803 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 20:48:04,816 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:48:04,836 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:48:04,838 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:48:04,838 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:48:04,840 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:48:04,840 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:48:04,840 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:48:04,840 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:48:04,840 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:48:04,841 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:48:04,842 INFO ]: Found error trace [2018-06-22 20:48:04,842 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:48:04,842 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:48:04,842 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 20:48:04,842 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:48:04,842 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:48:04,843 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:48:04,843 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:48:04,843 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:48:04,880 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:48:05,440 WARN ]: Spent 385.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2018-06-22 20:48:05,512 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:48:05,513 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:48:05,513 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 20:48:05,522 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:48:05,560 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:48:05,569 INFO ]: Computing forward predicates... [2018-06-22 20:48:06,043 WARN ]: Spent 213.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 6 [2018-06-22 20:48:06,164 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:48:06,186 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:48:06,186 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 20:48:06,187 INFO ]: Interpolant automaton has 9 states [2018-06-22 20:48:06,187 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 20:48:06,187 INFO ]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-06-22 20:48:06,187 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 20:48:06,390 WARN ]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-06-22 20:48:06,815 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:48:06,815 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:48:06,816 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 20:48:06,816 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 20:48:06,816 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:48:06,816 INFO ]: With dead ends: 15 [2018-06-22 20:48:06,816 INFO ]: Without dead ends: 15 [2018-06-22 20:48:06,817 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-06-22 20:48:06,817 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 20:48:06,820 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 20:48:06,820 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 20:48:06,820 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 20:48:06,821 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 20:48:06,821 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:48:06,821 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 20:48:06,821 INFO ]: Interpolant automaton has 9 states. [2018-06-22 20:48:06,821 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 20:48:06,821 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 20:48:06,821 INFO ]: Found error trace [2018-06-22 20:48:06,821 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:48:06,822 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:48:06,822 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 20:48:06,822 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:48:06,822 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:48:06,823 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:48:06,823 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:48:06,823 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:48:06,853 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:48:07,445 WARN ]: Spent 403.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2018-06-22 20:48:07,628 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:48:07,629 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:48:07,629 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 20:48:07,642 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 20:48:07,689 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 20:48:07,689 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:48:07,692 INFO ]: Computing forward predicates... [2018-06-22 20:48:07,973 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 31 [2018-06-22 20:48:08,116 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:48:08,146 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:48:08,146 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 20:48:08,146 INFO ]: Interpolant automaton has 13 states [2018-06-22 20:48:08,147 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 20:48:08,147 INFO ]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2018-06-22 20:48:08,147 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 20:48:08,533 WARN ]: Spent 335.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2018-06-22 20:48:08,915 WARN ]: Spent 207.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 28 [2018-06-22 20:48:09,076 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 46 [2018-06-22 20:48:09,114 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:48:09,114 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 20:48:09,115 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 20:48:09,115 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 20:48:09,115 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:48:09,115 INFO ]: With dead ends: 17 [2018-06-22 20:48:09,116 INFO ]: Without dead ends: 17 [2018-06-22 20:48:09,116 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2018-06-22 20:48:09,116 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 20:48:09,119 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 20:48:09,120 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 20:48:09,120 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 20:48:09,120 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 20:48:09,120 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:48:09,120 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 20:48:09,120 INFO ]: Interpolant automaton has 13 states. [2018-06-22 20:48:09,121 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 20:48:09,121 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 20:48:09,121 INFO ]: Found error trace [2018-06-22 20:48:09,121 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:48:09,121 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:48:09,122 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 20:48:09,122 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:48:09,122 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:48:09,123 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:48:09,123 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 20:48:09,123 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:48:09,151 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:48:09,444 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 20:48:09,444 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:48:09,491 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:48:09,498 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 20:48:09,568 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 20:48:09,568 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:48:09,571 INFO ]: Computing forward predicates... [2018-06-22 20:48:09,923 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 14 [2018-06-22 20:48:10,079 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2018-06-22 20:48:10,299 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 20:48:10,319 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:48:10,319 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 20:48:10,320 INFO ]: Interpolant automaton has 17 states [2018-06-22 20:48:10,320 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 20:48:10,320 INFO ]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2018-06-22 20:48:10,320 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 20:48:10,702 WARN ]: Spent 272.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 66 [2018-06-22 20:48:10,939 WARN ]: Spent 182.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2018-06-22 20:48:11,144 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 61 [2018-06-22 20:48:11,334 WARN ]: Spent 165.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-06-22 20:48:11,378 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:48:11,378 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 20:48:11,379 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 20:48:11,379 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 20:48:11,379 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:48:11,380 INFO ]: With dead ends: 19 [2018-06-22 20:48:11,380 INFO ]: Without dead ends: 19 [2018-06-22 20:48:11,380 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2018-06-22 20:48:11,380 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 20:48:11,383 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 20:48:11,383 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 20:48:11,384 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 20:48:11,384 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 20:48:11,384 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:48:11,384 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 20:48:11,384 INFO ]: Interpolant automaton has 17 states. [2018-06-22 20:48:11,384 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 20:48:11,385 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 20:48:11,385 INFO ]: Found error trace [2018-06-22 20:48:11,385 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:48:11,385 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:48:11,385 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 20:48:11,386 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:48:11,386 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:48:11,386 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:48:11,386 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 20:48:11,386 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:48:11,415 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:48:11,694 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 20:48:11,694 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:48:11,694 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 20:48:11,703 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 20:48:11,737 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 20:48:11,737 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:48:11,741 INFO ]: Computing forward predicates... [2018-06-22 20:48:12,221 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 20:48:12,242 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:48:12,242 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 20:48:12,243 INFO ]: Interpolant automaton has 21 states [2018-06-22 20:48:12,243 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 20:48:12,243 INFO ]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2018-06-22 20:48:12,243 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 20:48:12,439 WARN ]: Spent 148.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 59 [2018-06-22 20:48:12,818 WARN ]: Spent 118.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 25 [2018-06-22 20:48:12,960 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:48:12,960 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 20:48:12,961 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 20:48:12,961 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 20:48:12,961 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:48:12,962 INFO ]: With dead ends: 25 [2018-06-22 20:48:12,962 INFO ]: Without dead ends: 25 [2018-06-22 20:48:12,962 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2018-06-22 20:48:12,962 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 20:48:12,967 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-06-22 20:48:12,967 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 20:48:12,968 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 20:48:12,968 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 25 [2018-06-22 20:48:12,968 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:48:12,968 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 20:48:12,968 INFO ]: Interpolant automaton has 21 states. [2018-06-22 20:48:12,968 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 20:48:12,970 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 20:48:12,970 INFO ]: Found error trace [2018-06-22 20:48:12,970 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:48:12,971 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:48:12,971 INFO ]: Analyzing trace with hash 800064122, now seen corresponding path program 5 times [2018-06-22 20:48:12,971 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:48:12,971 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:48:12,971 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:48:12,971 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 20:48:12,971 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:48:13,015 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:48:13,392 WARN ]: Spent 220.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2018-06-22 20:48:13,695 WARN ]: Spent 125.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2018-06-22 20:48:14,107 INFO ]: Checked inductivity of 78 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 20:48:14,107 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:48:14,107 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 20:48:14,114 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 20:48:14,174 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2018-06-22 20:48:14,174 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:48:14,179 INFO ]: Computing forward predicates... [2018-06-22 20:48:14,790 WARN ]: Spent 218.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2018-06-22 20:48:14,997 WARN ]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 38 [2018-06-22 20:48:16,850 INFO ]: Checked inductivity of 78 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 20:48:16,872 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:48:16,872 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2018-06-22 20:48:16,872 INFO ]: Interpolant automaton has 28 states [2018-06-22 20:48:16,872 INFO ]: Constructing interpolant automaton starting with 28 interpolants. [2018-06-22 20:48:16,873 INFO ]: CoverageRelationStatistics Valid=59, Invalid=697, Unknown=0, NotChecked=0, Total=756 [2018-06-22 20:48:16,873 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 28 states. [2018-06-22 20:48:18,054 WARN ]: Spent 1.12 s on a formula simplification. DAG size of input: 162 DAG size of output: 103 [2018-06-22 20:48:18,451 WARN ]: Spent 171.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 35 [2018-06-22 20:48:18,709 WARN ]: Spent 208.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 33 [2018-06-22 20:48:18,953 WARN ]: Spent 183.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 37 [2018-06-22 20:48:19,204 WARN ]: Spent 200.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 43 [2018-06-22 20:48:19,219 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:48:19,219 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 20:48:19,220 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 20:48:19,220 INFO ]: Start accepts. Automaton has 28 states. Word has length 33 [2018-06-22 20:48:19,220 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:48:19,220 INFO ]: With dead ends: 19 [2018-06-22 20:48:19,220 INFO ]: Without dead ends: 0 [2018-06-22 20:48:19,221 INFO ]: 0 DeclaredPredicates, 54 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=153, Invalid=969, Unknown=0, NotChecked=0, Total=1122 [2018-06-22 20:48:19,221 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 20:48:19,221 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 20:48:19,221 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 20:48:19,221 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 20:48:19,221 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-06-22 20:48:19,221 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:48:19,221 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 20:48:19,221 INFO ]: Interpolant automaton has 28 states. [2018-06-22 20:48:19,221 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 20:48:19,221 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 20:48:19,226 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:48:19 BoogieIcfgContainer [2018-06-22 20:48:19,226 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 20:48:19,227 INFO ]: Toolchain (without parser) took 15273.01 ms. Allocated memory was 306.7 MB in the beginning and 492.8 MB in the end (delta: 186.1 MB). Free memory was 261.1 MB in the beginning and 294.1 MB in the end (delta: -33.0 MB). Peak memory consumption was 153.2 MB. Max. memory is 3.6 GB. [2018-06-22 20:48:19,230 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 20:48:19,230 INFO ]: ChcToBoogie took 53.62 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 259.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:48:19,230 INFO ]: Boogie Preprocessor took 53.01 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 257.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:48:19,231 INFO ]: RCFGBuilder took 249.01 ms. Allocated memory is still 306.7 MB. Free memory was 257.1 MB in the beginning and 247.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:48:19,231 INFO ]: TraceAbstraction took 14906.50 ms. Allocated memory was 306.7 MB in the beginning and 492.8 MB in the end (delta: 186.1 MB). Free memory was 247.2 MB in the beginning and 294.1 MB in the end (delta: -46.9 MB). Peak memory consumption was 139.2 MB. Max. memory is 3.6 GB. [2018-06-22 20:48:19,235 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 271.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 53.62 ms. Allocated memory is still 306.7 MB. Free memory was 261.1 MB in the beginning and 259.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 53.01 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 257.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 249.01 ms. Allocated memory is still 306.7 MB. Free memory was 257.1 MB in the beginning and 247.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 14906.50 ms. Allocated memory was 306.7 MB in the beginning and 492.8 MB in the end (delta: 186.1 MB). Free memory was 247.2 MB in the beginning and 294.1 MB in the end (delta: -46.9 MB). Peak memory consumption was 139.2 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, 14.8s OverallTime, 6 OverallIterations, 7 TraceHistogramMax, 5.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 72 SDtfs, 118 SDslu, 469 SDs, 0 SdLazy, 438 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.1s InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 69720 SizeOfPredicates, 149 NumberOfNonLiveVariables, 914 ConjunctsInSsa, 259 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 84/296 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/two_counters.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_20-48-19-249.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/two_counters.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_20-48-19-249.csv Received shutdown request...