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/eldarica-misc/LIA/reve/016-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:28:51,922 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:28:51,924 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:28:51,939 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:28:51,939 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:28:51,940 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:28:51,941 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:28:51,947 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:28:51,949 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:28:51,949 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:28:51,950 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:28:51,951 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:28:51,951 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:28:51,952 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:28:51,953 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:28:51,954 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:28:51,956 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:28:51,958 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:28:51,959 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:28:51,960 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:28:51,961 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:28:51,973 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:28:51,973 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:28:51,973 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:28:51,974 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:28:51,975 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:28:51,976 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:28:51,977 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:28:51,978 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:28:51,978 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:28:51,978 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:28:51,979 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:28:51,979 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:28:51,980 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:28:51,981 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:28:51,981 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:28:52,008 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:28:52,009 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:28:52,009 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:28:52,009 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:28:52,013 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:28:52,013 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:28:52,013 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:28:52,013 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:28:52,014 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:28:52,014 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:28:52,014 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:28:52,014 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:28:52,014 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:28:52,015 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:28:52,015 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:28:52,015 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:28:52,015 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:28:52,021 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:28:52,021 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:28:52,070 INFO ]: Repository-Root is: /tmp [2018-06-22 01:28:52,084 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:28:52,089 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:28:52,091 INFO ]: Initializing SmtParser... [2018-06-22 01:28:52,091 INFO ]: SmtParser initialized [2018-06-22 01:28:52,091 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/016-horn.smt2 [2018-06-22 01:28:52,093 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 01:28:52,182 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/016-horn.smt2 unknown [2018-06-22 01:28:52,320 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/016-horn.smt2 [2018-06-22 01:28:52,325 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:28:52,333 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:28:52,333 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:28:52,333 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:28:52,334 INFO ]: ChcToBoogie initialized [2018-06-22 01:28:52,337 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:28:52" (1/1) ... [2018-06-22 01:28:52,398 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:52 Unit [2018-06-22 01:28:52,398 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:28:52,399 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:28:52,399 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:28:52,399 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:28:52,417 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:52" (1/1) ... [2018-06-22 01:28:52,417 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:52" (1/1) ... [2018-06-22 01:28:52,422 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:52" (1/1) ... [2018-06-22 01:28:52,422 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:52" (1/1) ... [2018-06-22 01:28:52,425 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:52" (1/1) ... [2018-06-22 01:28:52,427 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:52" (1/1) ... [2018-06-22 01:28:52,427 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:52" (1/1) ... [2018-06-22 01:28:52,429 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:28:52,429 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:28:52,429 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:28:52,429 INFO ]: RCFGBuilder initialized [2018-06-22 01:28:52,431 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:52" (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 01:28:52,441 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:28:52,441 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:28:52,441 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:28:52,441 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:28:52,441 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:28:52,441 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 01:28:52,732 INFO ]: Using library mode [2018-06-22 01:28:52,732 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:28:52 BoogieIcfgContainer [2018-06-22 01:28:52,732 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:28:52,736 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:28:52,737 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:28:52,740 INFO ]: TraceAbstraction initialized [2018-06-22 01:28:52,746 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:28:52" (1/3) ... [2018-06-22 01:28:52,748 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7785d483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:28:52, skipping insertion in model container [2018-06-22 01:28:52,748 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:28:52" (2/3) ... [2018-06-22 01:28:52,748 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7785d483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:28:52, skipping insertion in model container [2018-06-22 01:28:52,748 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:28:52" (3/3) ... [2018-06-22 01:28:52,750 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:28:52,762 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:28:52,772 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:28:52,819 INFO ]: Using default assertion order modulation [2018-06-22 01:28:52,820 INFO ]: Interprodecural is true [2018-06-22 01:28:52,820 INFO ]: Hoare is false [2018-06-22 01:28:52,820 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:28:52,820 INFO ]: Backedges is TWOTRACK [2018-06-22 01:28:52,820 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:28:52,820 INFO ]: Difference is false [2018-06-22 01:28:52,820 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:28:52,820 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:28:52,836 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 01:28:52,848 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 01:28:52,848 INFO ]: Found error trace [2018-06-22 01:28:52,849 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:52,849 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:52,857 INFO ]: Analyzing trace with hash -204604396, now seen corresponding path program 1 times [2018-06-22 01:28:52,859 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:52,860 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:52,895 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:52,895 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:52,895 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:52,935 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:53,004 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:53,005 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:28:53,005 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:28:53,007 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:28:53,017 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:28:53,017 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:28:53,019 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 01:28:53,074 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:53,074 INFO ]: Finished difference Result 9 states and 13 transitions. [2018-06-22 01:28:53,075 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:28:53,076 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 01:28:53,076 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:53,084 INFO ]: With dead ends: 9 [2018-06-22 01:28:53,084 INFO ]: Without dead ends: 9 [2018-06-22 01:28:53,086 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 01:28:53,101 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 01:28:53,122 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 01:28:53,124 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 01:28:53,124 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-06-22 01:28:53,125 INFO ]: Start accepts. Automaton has 9 states and 13 transitions. Word has length 7 [2018-06-22 01:28:53,125 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:53,126 INFO ]: Abstraction has 9 states and 13 transitions. [2018-06-22 01:28:53,126 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:28:53,126 INFO ]: Start isEmpty. Operand 9 states and 13 transitions. [2018-06-22 01:28:53,126 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:28:53,126 INFO ]: Found error trace [2018-06-22 01:28:53,126 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:53,126 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:53,126 INFO ]: Analyzing trace with hash -2057039604, now seen corresponding path program 1 times [2018-06-22 01:28:53,126 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:53,126 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:53,127 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:53,127 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:53,127 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:53,153 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:53,306 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:53,306 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:28:53,306 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:28:53,307 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:28:53,307 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:28:53,307 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:28:53,307 INFO ]: Start difference. First operand 9 states and 13 transitions. Second operand 3 states. [2018-06-22 01:28:53,452 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:53,452 INFO ]: Finished difference Result 10 states and 16 transitions. [2018-06-22 01:28:53,454 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:28:53,454 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:28:53,454 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:53,454 INFO ]: With dead ends: 10 [2018-06-22 01:28:53,454 INFO ]: Without dead ends: 10 [2018-06-22 01:28:53,455 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:28:53,455 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 01:28:53,456 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 01:28:53,456 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 01:28:53,457 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2018-06-22 01:28:53,457 INFO ]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 8 [2018-06-22 01:28:53,457 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:53,457 INFO ]: Abstraction has 10 states and 16 transitions. [2018-06-22 01:28:53,457 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:28:53,457 INFO ]: Start isEmpty. Operand 10 states and 16 transitions. [2018-06-22 01:28:53,457 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:28:53,457 INFO ]: Found error trace [2018-06-22 01:28:53,457 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:53,457 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:53,457 INFO ]: Analyzing trace with hash -2053345520, now seen corresponding path program 1 times [2018-06-22 01:28:53,457 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:53,457 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:53,459 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:53,459 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:53,459 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:53,482 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:53,607 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:53,608 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:28:53,608 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:28:53,608 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:28:53,608 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:28:53,608 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:28:53,608 INFO ]: Start difference. First operand 10 states and 16 transitions. Second operand 3 states. [2018-06-22 01:28:53,689 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:53,689 INFO ]: Finished difference Result 12 states and 22 transitions. [2018-06-22 01:28:53,689 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:28:53,689 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-22 01:28:53,689 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:53,690 INFO ]: With dead ends: 12 [2018-06-22 01:28:53,690 INFO ]: Without dead ends: 12 [2018-06-22 01:28:53,690 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 01:28:53,691 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 01:28:53,692 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-06-22 01:28:53,692 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 01:28:53,692 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2018-06-22 01:28:53,692 INFO ]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 8 [2018-06-22 01:28:53,693 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:53,693 INFO ]: Abstraction has 10 states and 16 transitions. [2018-06-22 01:28:53,693 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:28:53,693 INFO ]: Start isEmpty. Operand 10 states and 16 transitions. [2018-06-22 01:28:53,693 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 01:28:53,693 INFO ]: Found error trace [2018-06-22 01:28:53,693 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:53,693 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:53,693 INFO ]: Analyzing trace with hash 654399260, now seen corresponding path program 1 times [2018-06-22 01:28:53,693 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:53,693 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:53,694 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:53,694 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:53,694 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:53,716 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:53,824 INFO ]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:53,824 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:28:53,824 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 01:28:53,830 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:53,870 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:53,878 INFO ]: Computing forward predicates... [2018-06-22 01:28:53,985 INFO ]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:54,006 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:28:54,006 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 7 [2018-06-22 01:28:54,006 INFO ]: Interpolant automaton has 7 states [2018-06-22 01:28:54,006 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 01:28:54,006 INFO ]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-22 01:28:54,007 INFO ]: Start difference. First operand 10 states and 16 transitions. Second operand 7 states. [2018-06-22 01:28:54,312 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:54,312 INFO ]: Finished difference Result 15 states and 27 transitions. [2018-06-22 01:28:54,313 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 01:28:54,313 INFO ]: Start accepts. Automaton has 7 states. Word has length 9 [2018-06-22 01:28:54,313 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:54,313 INFO ]: With dead ends: 15 [2018-06-22 01:28:54,313 INFO ]: Without dead ends: 11 [2018-06-22 01:28:54,314 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-22 01:28:54,314 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 01:28:54,315 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-06-22 01:28:54,315 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 01:28:54,316 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-06-22 01:28:54,316 INFO ]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 9 [2018-06-22 01:28:54,316 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:54,316 INFO ]: Abstraction has 10 states and 13 transitions. [2018-06-22 01:28:54,316 INFO ]: Interpolant automaton has 7 states. [2018-06-22 01:28:54,316 INFO ]: Start isEmpty. Operand 10 states and 13 transitions. [2018-06-22 01:28:54,316 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 01:28:54,316 INFO ]: Found error trace [2018-06-22 01:28:54,316 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:28:54,316 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:28:54,316 INFO ]: Analyzing trace with hash 768915864, now seen corresponding path program 1 times [2018-06-22 01:28:54,316 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:28:54,316 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:28:54,317 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:54,317 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:54,317 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:28:54,336 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:54,373 INFO ]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:54,373 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:28:54,373 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 01:28:54,380 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:28:54,412 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:28:54,414 INFO ]: Computing forward predicates... [2018-06-22 01:28:54,513 INFO ]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:28:54,533 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 01:28:54,533 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 01:28:54,534 INFO ]: Interpolant automaton has 6 states [2018-06-22 01:28:54,534 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 01:28:54,534 INFO ]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-22 01:28:54,534 INFO ]: Start difference. First operand 10 states and 13 transitions. Second operand 6 states. [2018-06-22 01:28:54,667 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:28:54,668 INFO ]: Finished difference Result 8 states and 13 transitions. [2018-06-22 01:28:54,668 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 01:28:54,668 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 01:28:54,668 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:28:54,668 INFO ]: With dead ends: 8 [2018-06-22 01:28:54,668 INFO ]: Without dead ends: 0 [2018-06-22 01:28:54,668 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-06-22 01:28:54,668 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:28:54,668 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:28:54,668 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:28:54,668 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:28:54,669 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-22 01:28:54,669 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:28:54,669 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:28:54,669 INFO ]: Interpolant automaton has 6 states. [2018-06-22 01:28:54,669 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:28:54,669 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:28:54,674 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:28:54 BoogieIcfgContainer [2018-06-22 01:28:54,674 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:28:54,675 INFO ]: Toolchain (without parser) took 2349.45 ms. Allocated memory was 309.3 MB in the beginning and 325.6 MB in the end (delta: 16.3 MB). Free memory was 265.7 MB in the beginning and 290.7 MB in the end (delta: -25.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:28:54,676 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:28:54,680 INFO ]: ChcToBoogie took 65.59 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 263.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:54,681 INFO ]: Boogie Preprocessor took 29.41 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 261.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:54,681 INFO ]: RCFGBuilder took 303.22 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 253.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:28:54,682 INFO ]: TraceAbstraction took 1937.66 ms. Allocated memory was 309.3 MB in the beginning and 325.6 MB in the end (delta: 16.3 MB). Free memory was 253.7 MB in the beginning and 290.7 MB in the end (delta: -37.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:28:54,690 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 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 65.59 ms. Allocated memory is still 309.3 MB. Free memory was 265.7 MB in the beginning and 263.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 29.41 ms. Allocated memory is still 309.3 MB. Free memory was 263.7 MB in the beginning and 261.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 303.22 ms. Allocated memory is still 309.3 MB. Free memory was 261.7 MB in the beginning and 253.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1937.66 ms. Allocated memory was 309.3 MB in the beginning and 325.6 MB in the end (delta: 16.3 MB). Free memory was 253.7 MB in the beginning and 290.7 MB in the end (delta: -37.0 MB). There was no memory consumed. 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, 1.8s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 0 SDslu, 43 SDs, 0 SdLazy, 70 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 1083 SizeOfPredicates, 8 NumberOfNonLiveVariables, 188 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 9/14 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/016-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-28-54-706.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/016-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-28-54-706.csv Received shutdown request...