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/ex3_e8_381_e7_224.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 17:25:43,923 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 17:25:43,926 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 17:25:43,942 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 17:25:43,942 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 17:25:43,943 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 17:25:43,947 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 17:25:43,950 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 17:25:43,951 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 17:25:43,954 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 17:25:43,957 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 17:25:43,957 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 17:25:43,958 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 17:25:43,959 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 17:25:43,970 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 17:25:43,971 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 17:25:43,972 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 17:25:43,974 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 17:25:43,976 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 17:25:43,977 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 17:25:43,978 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 17:25:43,983 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 17:25:43,984 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 17:25:43,984 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 17:25:43,985 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 17:25:43,986 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 17:25:43,991 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 17:25:43,992 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 17:25:43,993 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 17:25:43,993 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 17:25:43,994 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 17:25:44,000 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 17:25:44,000 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 17:25:44,001 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 17:25:44,003 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 17:25:44,004 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 17:25:44,025 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 17:25:44,025 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 17:25:44,026 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 17:25:44,026 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 17:25:44,027 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 17:25:44,028 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 17:25:44,028 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 17:25:44,028 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 17:25:44,028 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 17:25:44,029 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 17:25:44,029 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 17:25:44,029 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 17:25:44,029 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 17:25:44,029 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 17:25:44,029 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 17:25:44,030 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 17:25:44,033 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 17:25:44,034 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 17:25:44,034 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 17:25:44,035 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 17:25:44,036 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 17:25:44,100 INFO ]: Repository-Root is: /tmp [2018-06-22 17:25:44,115 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 17:25:44,119 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 17:25:44,120 INFO ]: Initializing SmtParser... [2018-06-22 17:25:44,120 INFO ]: SmtParser initialized [2018-06-22 17:25:44,121 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e8_381_e7_224.smt2 [2018-06-22 17:25:44,122 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 17:25:44,221 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e8_381_e7_224.smt2 unknown [2018-06-22 17:25:44,509 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e8_381_e7_224.smt2 [2018-06-22 17:25:44,515 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 17:25:44,522 INFO ]: Walking toolchain with 4 elements. [2018-06-22 17:25:44,523 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 17:25:44,523 INFO ]: Initializing ChcToBoogie... [2018-06-22 17:25:44,523 INFO ]: ChcToBoogie initialized [2018-06-22 17:25:44,526 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:25:44" (1/1) ... [2018-06-22 17:25:44,571 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:44 Unit [2018-06-22 17:25:44,571 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 17:25:44,572 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 17:25:44,572 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 17:25:44,572 INFO ]: Boogie Preprocessor initialized [2018-06-22 17:25:44,593 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:44" (1/1) ... [2018-06-22 17:25:44,593 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:44" (1/1) ... [2018-06-22 17:25:44,602 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:44" (1/1) ... [2018-06-22 17:25:44,603 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:44" (1/1) ... [2018-06-22 17:25:44,616 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:44" (1/1) ... [2018-06-22 17:25:44,617 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:44" (1/1) ... [2018-06-22 17:25:44,618 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:44" (1/1) ... [2018-06-22 17:25:44,620 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 17:25:44,627 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 17:25:44,627 INFO ]: Initializing RCFGBuilder... [2018-06-22 17:25:44,627 INFO ]: RCFGBuilder initialized [2018-06-22 17:25:44,628 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:44" (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 17:25:44,642 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 17:25:44,642 INFO ]: Found specification of procedure False [2018-06-22 17:25:44,643 INFO ]: Found implementation of procedure False [2018-06-22 17:25:44,643 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 17:25:44,643 INFO ]: Found specification of procedure state [2018-06-22 17:25:44,643 INFO ]: Found implementation of procedure state [2018-06-22 17:25:44,643 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 17:25:44,643 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 17:25:44,643 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 17:25:44,932 INFO ]: Using library mode [2018-06-22 17:25:44,933 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:25:44 BoogieIcfgContainer [2018-06-22 17:25:44,933 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 17:25:44,935 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 17:25:44,935 INFO ]: Initializing TraceAbstraction... [2018-06-22 17:25:44,938 INFO ]: TraceAbstraction initialized [2018-06-22 17:25:44,938 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 05:25:44" (1/3) ... [2018-06-22 17:25:44,939 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615a3491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 05:25:44, skipping insertion in model container [2018-06-22 17:25:44,939 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 05:25:44" (2/3) ... [2018-06-22 17:25:44,939 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615a3491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 05:25:44, skipping insertion in model container [2018-06-22 17:25:44,939 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 05:25:44" (3/3) ... [2018-06-22 17:25:44,942 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 17:25:44,952 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 17:25:44,963 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 17:25:45,004 INFO ]: Using default assertion order modulation [2018-06-22 17:25:45,005 INFO ]: Interprodecural is true [2018-06-22 17:25:45,005 INFO ]: Hoare is false [2018-06-22 17:25:45,005 INFO ]: Compute interpolants for FPandBP [2018-06-22 17:25:45,005 INFO ]: Backedges is TWOTRACK [2018-06-22 17:25:45,005 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 17:25:45,005 INFO ]: Difference is false [2018-06-22 17:25:45,005 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 17:25:45,005 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 17:25:45,016 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 17:25:45,026 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 17:25:45,026 INFO ]: Found error trace [2018-06-22 17:25:45,027 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:25:45,027 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:25:45,032 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 17:25:45,033 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:25:45,033 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:25:45,068 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:45,068 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:25:45,068 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:45,119 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:25:45,231 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 17:25:45,233 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 17:25:45,234 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 17:25:45,235 INFO ]: Interpolant automaton has 4 states [2018-06-22 17:25:45,247 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 17:25:45,247 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:25:45,250 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 17:25:45,343 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:25:45,343 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 17:25:45,344 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 17:25:45,345 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 17:25:45,345 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:25:45,358 INFO ]: With dead ends: 13 [2018-06-22 17:25:45,358 INFO ]: Without dead ends: 13 [2018-06-22 17:25:45,360 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 17:25:45,377 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 17:25:45,397 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 17:25:45,398 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 17:25:45,399 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 17:25:45,400 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 17:25:45,400 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:25:45,400 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 17:25:45,400 INFO ]: Interpolant automaton has 4 states. [2018-06-22 17:25:45,400 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 17:25:45,402 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 17:25:45,402 INFO ]: Found error trace [2018-06-22 17:25:45,402 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:25:45,402 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:25:45,402 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 17:25:45,402 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:25:45,402 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:25:45,403 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:45,403 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:25:45,403 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:45,445 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:25:45,638 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:25:45,638 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:25:45,638 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 17:25:45,656 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 17:25:45,734 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:25:45,744 INFO ]: Computing forward predicates... [2018-06-22 17:25:46,364 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 17:25:46,397 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:25:46,397 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 17:25:46,398 INFO ]: Interpolant automaton has 8 states [2018-06-22 17:25:46,398 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 17:25:46,398 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 17:25:46,398 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 17:25:46,632 WARN ]: Spent 111.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 9 [2018-06-22 17:25:46,745 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:25:46,745 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 17:25:46,746 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 17:25:46,746 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 17:25:46,747 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:25:46,747 INFO ]: With dead ends: 15 [2018-06-22 17:25:46,747 INFO ]: Without dead ends: 15 [2018-06-22 17:25:46,748 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2018-06-22 17:25:46,748 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 17:25:46,753 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 17:25:46,753 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 17:25:46,754 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 17:25:46,754 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 17:25:46,754 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:25:46,754 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 17:25:46,754 INFO ]: Interpolant automaton has 8 states. [2018-06-22 17:25:46,754 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 17:25:46,755 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 17:25:46,755 INFO ]: Found error trace [2018-06-22 17:25:46,755 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:25:46,755 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:25:46,755 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 17:25:46,755 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:25:46,755 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:25:46,757 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:46,757 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 17:25:46,757 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:46,868 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:25:47,475 WARN ]: Spent 336.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 19 [2018-06-22 17:25:47,832 WARN ]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 17:25:47,949 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 17:25:47,950 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:25:47,950 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 17:25:47,960 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 17:25:48,021 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 17:25:48,022 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:25:48,026 INFO ]: Computing forward predicates... [2018-06-22 17:25:48,188 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 17:25:49,256 WARN ]: Spent 113.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 11 [2018-06-22 17:25:49,770 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 17:25:49,789 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:25:49,790 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 17:25:49,790 INFO ]: Interpolant automaton has 13 states [2018-06-22 17:25:49,790 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 17:25:49,790 INFO ]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 17:25:49,790 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 17:25:49,922 WARN ]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-06-22 17:25:50,178 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:25:50,178 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 17:25:50,179 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 17:25:50,179 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 17:25:50,179 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:25:50,179 INFO ]: With dead ends: 17 [2018-06-22 17:25:50,179 INFO ]: Without dead ends: 17 [2018-06-22 17:25:50,180 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-06-22 17:25:50,180 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 17:25:50,184 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 17:25:50,184 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 17:25:50,184 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 17:25:50,184 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 17:25:50,185 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:25:50,185 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 17:25:50,185 INFO ]: Interpolant automaton has 13 states. [2018-06-22 17:25:50,185 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 17:25:50,185 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 17:25:50,185 INFO ]: Found error trace [2018-06-22 17:25:50,185 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 17:25:50,185 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 17:25:50,186 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 17:25:50,186 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 17:25:50,186 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 17:25:50,186 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:50,186 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 17:25:50,187 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 17:25:50,220 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:25:50,528 INFO ]: Checked inductivity of 21 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 17:25:50,528 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 17:25:50,528 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 17:25:50,541 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 17:25:50,592 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 17:25:50,592 INFO ]: Conjunction of SSA is unsat [2018-06-22 17:25:50,596 INFO ]: Computing forward predicates... [2018-06-22 17:25:50,724 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 17:25:50,753 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 17:25:50,775 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 17:25:50,782 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 17:25:50,800 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 17:25:50,915 WARN ]: Simplifying disjunction of 9216 conjuctions. This might take some time... [2018-06-22 17:25:54,385 INFO ]: Simplified to disjunction of 4096 conjuctions. [2018-06-22 17:25:54,975 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 27 [2018-06-22 17:25:55,186 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 17:25:55,222 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 17:25:55,222 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 13 [2018-06-22 17:25:55,222 INFO ]: Interpolant automaton has 13 states [2018-06-22 17:25:55,223 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 17:25:55,223 INFO ]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2018-06-22 17:25:55,223 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 13 states. [2018-06-22 17:25:55,464 WARN ]: Spent 207.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2018-06-22 17:25:55,717 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 17:25:55,717 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 17:25:55,718 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 17:25:55,718 INFO ]: Start accepts. Automaton has 13 states. Word has length 21 [2018-06-22 17:25:55,718 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 17:25:55,718 INFO ]: With dead ends: 13 [2018-06-22 17:25:55,718 INFO ]: Without dead ends: 0 [2018-06-22 17:25:55,719 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2018-06-22 17:25:55,719 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 17:25:55,719 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 17:25:55,719 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 17:25:55,719 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 17:25:55,719 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 17:25:55,719 INFO ]: Finished accepts. word is rejected. [2018-06-22 17:25:55,719 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 17:25:55,719 INFO ]: Interpolant automaton has 13 states. [2018-06-22 17:25:55,719 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 17:25:55,719 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 17:25:55,725 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:25:55 BoogieIcfgContainer [2018-06-22 17:25:55,725 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 17:25:55,726 INFO ]: Toolchain (without parser) took 11210.86 ms. Allocated memory was 300.9 MB in the beginning and 552.1 MB in the end (delta: 251.1 MB). Free memory was 253.3 MB in the beginning and 204.7 MB in the end (delta: 48.6 MB). Peak memory consumption was 299.8 MB. Max. memory is 3.6 GB. [2018-06-22 17:25:55,727 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 300.9 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 17:25:55,727 INFO ]: ChcToBoogie took 48.93 ms. Allocated memory is still 300.9 MB. Free memory was 253.3 MB in the beginning and 251.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:25:55,728 INFO ]: Boogie Preprocessor took 48.35 ms. Allocated memory is still 300.9 MB. Free memory was 251.3 MB in the beginning and 249.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:25:55,729 INFO ]: RCFGBuilder took 306.31 ms. Allocated memory is still 300.9 MB. Free memory was 249.3 MB in the beginning and 238.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. [2018-06-22 17:25:55,729 INFO ]: TraceAbstraction took 10790.64 ms. Allocated memory was 300.9 MB in the beginning and 552.1 MB in the end (delta: 251.1 MB). Free memory was 238.3 MB in the beginning and 204.7 MB in the end (delta: 33.7 MB). Peak memory consumption was 284.8 MB. Max. memory is 3.6 GB. [2018-06-22 17:25:55,732 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 300.9 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 48.93 ms. Allocated memory is still 300.9 MB. Free memory was 253.3 MB in the beginning and 251.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 48.35 ms. Allocated memory is still 300.9 MB. Free memory was 251.3 MB in the beginning and 249.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 306.31 ms. Allocated memory is still 300.9 MB. Free memory was 249.3 MB in the beginning and 238.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 10790.64 ms. Allocated memory was 300.9 MB in the beginning and 552.1 MB in the end (delta: 251.1 MB). Free memory was 238.3 MB in the beginning and 204.7 MB in the end (delta: 33.7 MB). Peak memory consumption was 284.8 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, 10.7s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 30 SDslu, 105 SDs, 0 SdLazy, 91 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 3.4s 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 9324 SizeOfPredicates, 74 NumberOfNonLiveVariables, 717 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 30/68 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/ex3_e8_381_e7_224.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_17-25-55-743.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ex3_e8_381_e7_224.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_17-25-55-743.csv Received shutdown request...