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_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e8_120.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 07:31:40,912 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 07:31:40,914 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 07:31:40,930 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 07:31:40,930 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 07:31:40,931 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 07:31:40,932 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 07:31:40,934 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 07:31:40,935 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 07:31:40,936 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 07:31:40,937 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 07:31:40,937 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 07:31:40,938 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 07:31:40,939 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 07:31:40,940 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 07:31:40,940 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 07:31:40,942 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 07:31:40,944 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 07:31:40,945 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 07:31:40,946 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 07:31:40,947 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 07:31:40,950 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 07:31:40,950 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 07:31:40,950 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 07:31:40,951 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 07:31:40,952 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 07:31:40,953 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 07:31:40,953 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 07:31:40,954 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 07:31:40,955 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 07:31:40,955 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 07:31:40,956 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 07:31:40,956 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 07:31:40,957 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 07:31:40,958 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 07:31:40,958 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 07:31:40,972 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 07:31:40,972 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 07:31:40,972 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 07:31:40,972 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 07:31:40,973 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 07:31:40,974 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 07:31:40,974 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 07:31:40,974 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 07:31:40,974 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 07:31:40,975 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 07:31:40,975 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 07:31:40,975 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 07:31:40,975 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 07:31:40,975 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 07:31:40,976 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 07:31:40,976 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 07:31:40,976 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 07:31:40,977 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 07:31:40,978 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 07:31:41,019 INFO ]: Repository-Root is: /tmp [2018-06-22 07:31:41,038 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 07:31:41,041 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 07:31:41,043 INFO ]: Initializing SmtParser... [2018-06-22 07:31:41,043 INFO ]: SmtParser initialized [2018-06-22 07:31:41,044 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e8_120.smt2 [2018-06-22 07:31:41,045 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 07:31:41,139 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e8_120.smt2 unknown [2018-06-22 07:31:41,496 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/ex3_e8_120.smt2 [2018-06-22 07:31:41,502 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 07:31:41,508 INFO ]: Walking toolchain with 4 elements. [2018-06-22 07:31:41,508 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 07:31:41,508 INFO ]: Initializing ChcToBoogie... [2018-06-22 07:31:41,509 INFO ]: ChcToBoogie initialized [2018-06-22 07:31:41,512 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:31:41" (1/1) ... [2018-06-22 07:31:41,572 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:41 Unit [2018-06-22 07:31:41,572 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 07:31:41,573 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 07:31:41,573 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 07:31:41,573 INFO ]: Boogie Preprocessor initialized [2018-06-22 07:31:41,593 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:41" (1/1) ... [2018-06-22 07:31:41,593 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:41" (1/1) ... [2018-06-22 07:31:41,601 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:41" (1/1) ... [2018-06-22 07:31:41,601 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:41" (1/1) ... [2018-06-22 07:31:41,605 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:41" (1/1) ... [2018-06-22 07:31:41,607 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:41" (1/1) ... [2018-06-22 07:31:41,619 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:41" (1/1) ... [2018-06-22 07:31:41,621 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 07:31:41,621 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 07:31:41,621 INFO ]: Initializing RCFGBuilder... [2018-06-22 07:31:41,621 INFO ]: RCFGBuilder initialized [2018-06-22 07:31:41,622 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:41" (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 07:31:41,643 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 07:31:41,643 INFO ]: Found specification of procedure gotoProc [2018-06-22 07:31:41,643 INFO ]: Found implementation of procedure gotoProc [2018-06-22 07:31:41,643 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 07:31:41,643 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 07:31:41,643 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 07:31:41,928 INFO ]: Using library mode [2018-06-22 07:31:41,928 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:31:41 BoogieIcfgContainer [2018-06-22 07:31:41,928 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 07:31:41,930 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 07:31:41,930 INFO ]: Initializing TraceAbstraction... [2018-06-22 07:31:41,933 INFO ]: TraceAbstraction initialized [2018-06-22 07:31:41,933 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:31:41" (1/3) ... [2018-06-22 07:31:41,934 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3184004a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:31:41, skipping insertion in model container [2018-06-22 07:31:41,934 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:31:41" (2/3) ... [2018-06-22 07:31:41,934 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3184004a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:31:41, skipping insertion in model container [2018-06-22 07:31:41,934 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:31:41" (3/3) ... [2018-06-22 07:31:41,936 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 07:31:41,945 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 07:31:41,955 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 07:31:42,013 INFO ]: Using default assertion order modulation [2018-06-22 07:31:42,013 INFO ]: Interprodecural is true [2018-06-22 07:31:42,013 INFO ]: Hoare is false [2018-06-22 07:31:42,013 INFO ]: Compute interpolants for FPandBP [2018-06-22 07:31:42,013 INFO ]: Backedges is TWOTRACK [2018-06-22 07:31:42,013 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 07:31:42,014 INFO ]: Difference is false [2018-06-22 07:31:42,014 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 07:31:42,014 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 07:31:42,032 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 07:31:42,044 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 07:31:42,044 INFO ]: Found error trace [2018-06-22 07:31:42,045 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:31:42,045 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:31:42,051 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-22 07:31:42,052 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:31:42,053 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:31:42,090 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:31:42,090 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:31:42,091 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:31:42,158 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:31:42,243 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:31:42,245 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 07:31:42,245 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 07:31:42,246 INFO ]: Interpolant automaton has 3 states [2018-06-22 07:31:42,256 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 07:31:42,257 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 07:31:42,258 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 07:31:42,338 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:31:42,338 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 07:31:42,339 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 07:31:42,340 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 07:31:42,340 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:31:42,350 INFO ]: With dead ends: 9 [2018-06-22 07:31:42,350 INFO ]: Without dead ends: 9 [2018-06-22 07:31:42,354 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 07:31:42,373 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 07:31:42,398 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 07:31:42,400 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 07:31:42,401 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 07:31:42,402 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 07:31:42,402 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:31:42,402 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 07:31:42,402 INFO ]: Interpolant automaton has 3 states. [2018-06-22 07:31:42,402 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 07:31:42,402 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 07:31:42,402 INFO ]: Found error trace [2018-06-22 07:31:42,402 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:31:42,403 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:31:42,403 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-22 07:31:42,403 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:31:42,403 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:31:42,404 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:31:42,404 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:31:42,404 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:31:42,465 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:31:42,565 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:31:42,565 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 07:31:42,565 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 07:31:42,576 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:31:42,658 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:31:42,669 INFO ]: Computing forward predicates... [2018-06-22 07:31:42,836 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:31:42,857 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 07:31:42,857 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 07:31:42,858 INFO ]: Interpolant automaton has 5 states [2018-06-22 07:31:42,858 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 07:31:42,858 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 07:31:42,858 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 07:31:42,927 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:31:42,927 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 07:31:42,927 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 07:31:42,927 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 07:31:42,928 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:31:42,928 INFO ]: With dead ends: 10 [2018-06-22 07:31:42,928 INFO ]: Without dead ends: 10 [2018-06-22 07:31:42,928 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 07:31:42,929 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 07:31:42,930 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 07:31:42,930 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 07:31:42,930 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 07:31:42,930 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 07:31:42,930 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:31:42,930 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 07:31:42,930 INFO ]: Interpolant automaton has 5 states. [2018-06-22 07:31:42,930 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 07:31:42,931 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 07:31:42,931 INFO ]: Found error trace [2018-06-22 07:31:42,931 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 07:31:42,931 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 07:31:42,931 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-22 07:31:42,931 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 07:31:42,931 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 07:31:42,932 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:31:42,932 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 07:31:42,932 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 07:31:42,984 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:31:43,334 WARN ]: Spent 163.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-06-22 07:31:43,367 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:31:43,367 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 07:31:43,367 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 07:31:43,392 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 07:31:43,467 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 07:31:43,467 INFO ]: Conjunction of SSA is unsat [2018-06-22 07:31:43,470 INFO ]: Computing forward predicates... [2018-06-22 07:31:44,702 WARN ]: Spent 195.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-06-22 07:31:44,912 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 07:31:44,932 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 07:31:44,932 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 07:31:44,932 INFO ]: Interpolant automaton has 8 states [2018-06-22 07:31:44,933 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 07:31:44,933 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 07:31:44,933 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 07:31:45,108 WARN ]: Spent 107.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2018-06-22 07:31:45,112 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 07:31:45,112 INFO ]: Finished difference Result 5 states and 4 transitions. [2018-06-22 07:31:45,112 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 07:31:45,112 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 07:31:45,112 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 07:31:45,112 INFO ]: With dead ends: 5 [2018-06-22 07:31:45,112 INFO ]: Without dead ends: 0 [2018-06-22 07:31:45,113 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-06-22 07:31:45,113 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 07:31:45,113 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 07:31:45,113 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 07:31:45,113 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 07:31:45,113 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-22 07:31:45,113 INFO ]: Finished accepts. word is rejected. [2018-06-22 07:31:45,113 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 07:31:45,113 INFO ]: Interpolant automaton has 8 states. [2018-06-22 07:31:45,113 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 07:31:45,113 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 07:31:45,118 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:31:45 BoogieIcfgContainer [2018-06-22 07:31:45,118 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 07:31:45,118 INFO ]: Toolchain (without parser) took 3615.89 ms. Allocated memory was 307.2 MB in the beginning and 327.2 MB in the end (delta: 19.9 MB). Free memory was 259.6 MB in the beginning and 201.1 MB in the end (delta: 58.5 MB). Peak memory consumption was 78.4 MB. Max. memory is 3.6 GB. [2018-06-22 07:31:45,119 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 07:31:45,119 INFO ]: ChcToBoogie took 63.95 ms. Allocated memory is still 307.2 MB. Free memory was 259.6 MB in the beginning and 256.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 07:31:45,120 INFO ]: Boogie Preprocessor took 48.11 ms. Allocated memory is still 307.2 MB. Free memory was 256.6 MB in the beginning and 255.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-22 07:31:45,121 INFO ]: RCFGBuilder took 307.10 ms. Allocated memory is still 307.2 MB. Free memory was 255.6 MB in the beginning and 241.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-22 07:31:45,121 INFO ]: TraceAbstraction took 3187.83 ms. Allocated memory was 307.2 MB in the beginning and 327.2 MB in the end (delta: 19.9 MB). Free memory was 241.6 MB in the beginning and 201.1 MB in the end (delta: 40.4 MB). Peak memory consumption was 60.3 MB. Max. memory is 3.6 GB. [2018-06-22 07:31:45,125 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 63.95 ms. Allocated memory is still 307.2 MB. Free memory was 259.6 MB in the beginning and 256.6 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 48.11 ms. Allocated memory is still 307.2 MB. Free memory was 256.6 MB in the beginning and 255.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 307.10 ms. Allocated memory is still 307.2 MB. Free memory was 255.6 MB in the beginning and 241.6 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3187.83 ms. Allocated memory was 307.2 MB in the beginning and 327.2 MB in the end (delta: 19.9 MB). Free memory was 241.6 MB in the beginning and 201.1 MB in the end (delta: 40.4 MB). Peak memory consumption was 60.3 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 2 procedures, 10 locations, 1 error locations. SAFE Result, 3.1s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 25 SDs, 0 SdLazy, 17 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 551 SizeOfPredicates, 4 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 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_120.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_07-31-45-144.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ex3_e8_120.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_07-31-45-144.csv Received shutdown request...