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/rtp_1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:46:36,242 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:46:36,245 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:46:36,259 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:46:36,259 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:46:36,260 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:46:36,261 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:46:36,266 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:46:36,267 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:46:36,269 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:46:36,270 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:46:36,270 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:46:36,271 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:46:36,272 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:46:36,275 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:46:36,276 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:46:36,278 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:46:36,287 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:46:36,288 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:46:36,289 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:46:36,290 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:46:36,295 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:46:36,295 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:46:36,295 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:46:36,299 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:46:36,300 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:46:36,301 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:46:36,302 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:46:36,302 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:46:36,303 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:46:36,308 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:46:36,309 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:46:36,309 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:46:36,310 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:46:36,310 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:46:36,311 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 19:46:36,331 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:46:36,331 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:46:36,332 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:46:36,332 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:46:36,333 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:46:36,333 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:46:36,333 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:46:36,333 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:46:36,333 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:46:36,334 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:46:36,334 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:46:36,335 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:46:36,335 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:46:36,335 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:46:36,335 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:46:36,335 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:46:36,336 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:46:36,336 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:46:36,336 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:46:36,337 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:46:36,337 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:46:36,385 INFO ]: Repository-Root is: /tmp [2018-06-22 19:46:36,402 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:46:36,407 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:46:36,408 INFO ]: Initializing SmtParser... [2018-06-22 19:46:36,408 INFO ]: SmtParser initialized [2018-06-22 19:46:36,409 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/rtp_1.smt2 [2018-06-22 19:46:36,411 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 19:46:36,504 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/rtp_1.smt2 unknown [2018-06-22 19:46:37,178 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/rtp_1.smt2 [2018-06-22 19:46:37,183 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:46:37,189 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:46:37,190 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:46:37,190 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:46:37,190 INFO ]: ChcToBoogie initialized [2018-06-22 19:46:37,193 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:46:37" (1/1) ... [2018-06-22 19:46:37,276 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:37 Unit [2018-06-22 19:46:37,276 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:46:37,277 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:46:37,277 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:46:37,277 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:46:37,314 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:37" (1/1) ... [2018-06-22 19:46:37,315 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:37" (1/1) ... [2018-06-22 19:46:37,346 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:37" (1/1) ... [2018-06-22 19:46:37,347 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:37" (1/1) ... [2018-06-22 19:46:37,367 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:37" (1/1) ... [2018-06-22 19:46:37,368 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:37" (1/1) ... [2018-06-22 19:46:37,380 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:37" (1/1) ... [2018-06-22 19:46:37,385 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:46:37,386 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:46:37,386 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:46:37,386 INFO ]: RCFGBuilder initialized [2018-06-22 19:46:37,390 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:37" (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 19:46:37,420 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:46:37,420 INFO ]: Found specification of procedure False [2018-06-22 19:46:37,420 INFO ]: Found implementation of procedure False [2018-06-22 19:46:37,421 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:46:37,421 INFO ]: Found specification of procedure state [2018-06-22 19:46:37,421 INFO ]: Found implementation of procedure state [2018-06-22 19:46:37,421 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:46:37,421 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:46:37,421 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 19:46:37,882 INFO ]: Using library mode [2018-06-22 19:46:37,886 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:46:37 BoogieIcfgContainer [2018-06-22 19:46:37,886 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:46:37,887 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:46:37,887 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:46:37,892 INFO ]: TraceAbstraction initialized [2018-06-22 19:46:37,892 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:46:37" (1/3) ... [2018-06-22 19:46:37,893 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9a3003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:46:37, skipping insertion in model container [2018-06-22 19:46:37,893 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:46:37" (2/3) ... [2018-06-22 19:46:37,894 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9a3003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:46:37, skipping insertion in model container [2018-06-22 19:46:37,894 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:46:37" (3/3) ... [2018-06-22 19:46:37,896 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:46:37,905 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:46:37,914 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:46:37,958 INFO ]: Using default assertion order modulation [2018-06-22 19:46:37,958 INFO ]: Interprodecural is true [2018-06-22 19:46:37,958 INFO ]: Hoare is false [2018-06-22 19:46:37,958 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:46:37,958 INFO ]: Backedges is TWOTRACK [2018-06-22 19:46:37,958 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:46:37,958 INFO ]: Difference is false [2018-06-22 19:46:37,958 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:46:37,958 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:46:37,972 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:46:37,984 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:46:37,984 INFO ]: Found error trace [2018-06-22 19:46:37,985 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:46:37,985 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:46:37,991 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:46:37,993 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:46:37,993 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:46:38,036 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:38,036 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:46:38,036 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:38,162 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:38,745 WARN ]: Spent 340.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 7 [2018-06-22 19:46:38,752 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:46:38,754 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:46:38,754 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:46:38,756 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:46:38,771 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:46:38,771 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:46:38,773 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:46:38,916 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:46:38,916 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:46:38,918 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:46:38,919 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:46:38,919 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:46:38,933 INFO ]: With dead ends: 13 [2018-06-22 19:46:38,933 INFO ]: Without dead ends: 13 [2018-06-22 19:46:38,935 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:46:38,952 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:46:38,990 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:46:38,991 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:46:38,992 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:46:38,994 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:46:38,994 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:46:38,994 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:46:38,994 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:46:38,994 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:46:38,995 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:46:38,995 INFO ]: Found error trace [2018-06-22 19:46:38,995 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:46:38,995 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:46:38,995 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:46:38,996 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:46:38,996 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:46:38,996 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:38,996 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:46:38,996 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:39,095 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:39,538 WARN ]: Spent 219.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 17 [2018-06-22 19:46:39,583 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:46:39,583 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:46:39,583 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 19:46:39,591 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:46:39,780 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:39,793 INFO ]: Computing forward predicates... [2018-06-22 19:46:40,646 WARN ]: Spent 384.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 7 [2018-06-22 19:46:40,901 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:46:40,924 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:46:40,924 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:46:40,924 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:46:40,925 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:46:40,925 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:46:40,925 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:46:41,450 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:46:41,450 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:46:41,472 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:46:41,472 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:46:41,472 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:46:41,472 INFO ]: With dead ends: 15 [2018-06-22 19:46:41,472 INFO ]: Without dead ends: 15 [2018-06-22 19:46:41,473 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 19:46:41,473 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:46:41,476 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:46:41,476 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:46:41,476 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:46:41,477 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:46:41,477 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:46:41,477 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:46:41,477 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:46:41,477 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:46:41,477 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:46:41,477 INFO ]: Found error trace [2018-06-22 19:46:41,477 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:46:41,478 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:46:41,478 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:46:41,478 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:46:41,478 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:46:41,479 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:41,479 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:46:41,479 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:41,616 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:42,150 WARN ]: Spent 156.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 20 [2018-06-22 19:46:42,203 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:46:42,203 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:46:42,203 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 19:46:42,209 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:46:42,413 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:46:42,413 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:42,422 INFO ]: Computing forward predicates... [2018-06-22 19:46:42,876 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:46:42,900 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:46:42,901 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 19:46:42,901 INFO ]: Interpolant automaton has 12 states [2018-06-22 19:46:42,901 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 19:46:42,901 INFO ]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-06-22 19:46:42,901 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 19:46:43,203 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2018-06-22 19:46:43,285 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:46:43,285 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:46:43,286 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:46:43,286 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 19:46:43,286 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:46:43,287 INFO ]: With dead ends: 17 [2018-06-22 19:46:43,287 INFO ]: Without dead ends: 17 [2018-06-22 19:46:43,287 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-06-22 19:46:43,287 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:46:43,289 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:46:43,289 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:46:43,290 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:46:43,290 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:46:43,290 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:46:43,290 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:46:43,290 INFO ]: Interpolant automaton has 12 states. [2018-06-22 19:46:43,290 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:46:43,291 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:46:43,291 INFO ]: Found error trace [2018-06-22 19:46:43,291 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:46:43,291 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:46:43,291 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 19:46:43,291 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:46:43,291 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:46:43,292 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:43,292 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:46:43,292 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:46:43,405 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:44,138 WARN ]: Spent 430.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2018-06-22 19:46:44,307 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:46:44,307 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:46:44,307 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 19:46:44,321 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 19:46:44,584 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:46:44,584 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:46:44,595 INFO ]: Computing forward predicates... [2018-06-22 19:46:44,816 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:46:44,841 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:46:44,841 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 19:46:44,841 INFO ]: Interpolant automaton has 17 states [2018-06-22 19:46:44,842 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 19:46:44,842 INFO ]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-06-22 19:46:44,842 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 19:46:45,319 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:46:45,320 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:46:45,320 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:46:45,320 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 19:46:45,320 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:46:45,320 INFO ]: With dead ends: 13 [2018-06-22 19:46:45,320 INFO ]: Without dead ends: 0 [2018-06-22 19:46:45,321 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-06-22 19:46:45,321 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:46:45,321 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:46:45,321 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:46:45,321 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:46:45,321 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 19:46:45,321 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:46:45,321 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:46:45,321 INFO ]: Interpolant automaton has 17 states. [2018-06-22 19:46:45,321 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:46:45,321 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:46:45,326 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:46:45 BoogieIcfgContainer [2018-06-22 19:46:45,326 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:46:45,327 INFO ]: Toolchain (without parser) took 8143.52 ms. Allocated memory was 305.7 MB in the beginning and 394.3 MB in the end (delta: 88.6 MB). Free memory was 230.1 MB in the beginning and 275.9 MB in the end (delta: -45.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 3.6 GB. [2018-06-22 19:46:45,328 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.7 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:46:45,328 INFO ]: ChcToBoogie took 87.22 ms. Allocated memory is still 305.7 MB. Free memory was 230.1 MB in the beginning and 226.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:46:45,329 INFO ]: Boogie Preprocessor took 108.42 ms. Allocated memory is still 305.7 MB. Free memory was 226.2 MB in the beginning and 224.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:46:45,329 INFO ]: RCFGBuilder took 500.27 ms. Allocated memory was 305.7 MB in the beginning and 324.0 MB in the end (delta: 18.4 MB). Free memory was 224.2 MB in the beginning and 293.4 MB in the end (delta: -69.3 MB). Peak memory consumption was 45.2 MB. Max. memory is 3.6 GB. [2018-06-22 19:46:45,330 INFO ]: TraceAbstraction took 7438.82 ms. Allocated memory was 324.0 MB in the beginning and 394.3 MB in the end (delta: 70.3 MB). Free memory was 293.4 MB in the beginning and 275.9 MB in the end (delta: 17.5 MB). Peak memory consumption was 87.8 MB. Max. memory is 3.6 GB. [2018-06-22 19:46:45,332 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 305.7 MB. Free memory is still 270.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 87.22 ms. Allocated memory is still 305.7 MB. Free memory was 230.1 MB in the beginning and 226.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 108.42 ms. Allocated memory is still 305.7 MB. Free memory was 226.2 MB in the beginning and 224.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 500.27 ms. Allocated memory was 305.7 MB in the beginning and 324.0 MB in the end (delta: 18.4 MB). Free memory was 224.2 MB in the beginning and 293.4 MB in the end (delta: -69.3 MB). Peak memory consumption was 45.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 7438.82 ms. Allocated memory was 324.0 MB in the beginning and 394.3 MB in the end (delta: 70.3 MB). Free memory was 293.4 MB in the beginning and 275.9 MB in the end (delta: 17.5 MB). Peak memory consumption was 87.8 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, 7.3s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 31 SDslu, 124 SDs, 0 SdLazy, 113 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 8552 SizeOfPredicates, 57 NumberOfNonLiveVariables, 3453 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 20/68 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/rtp_1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-46-45-343.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rtp_1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-46-45-343.csv Received shutdown request...