java -Xss4m -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/hopv/lia/fpice/inductive5.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:21:17,035 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:21:17,037 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:21:17,049 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:21:17,049 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:21:17,050 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:21:17,051 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:21:17,053 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:21:17,055 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:21:17,055 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:21:17,056 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:21:17,056 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:21:17,057 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:21:17,058 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:21:17,059 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:21:17,060 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:21:17,062 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:21:17,064 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:21:17,065 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:21:17,067 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:21:17,068 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:21:17,070 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:21:17,070 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:21:17,071 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:21:17,072 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:21:17,073 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:21:17,073 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:21:17,074 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:21:17,075 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:21:17,075 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:21:17,076 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:21:17,077 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:21:17,077 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:21:17,082 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:21:17,083 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:21:17,083 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:21:17,099 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:21:17,099 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:21:17,100 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:21:17,100 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:21:17,101 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:21:17,101 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:21:17,101 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:21:17,101 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:21:17,102 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:21:17,102 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:21:17,102 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:21:17,102 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:21:17,102 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:21:17,103 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:21:17,103 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:21:17,103 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:21:17,103 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:21:17,103 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:21:17,104 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:21:17,104 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:21:17,104 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:21:17,105 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:21:17,106 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:21:17,148 INFO ]: Repository-Root is: /tmp [2018-06-25 09:21:17,165 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:21:17,171 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:21:17,172 INFO ]: Initializing SmtParser... [2018-06-25 09:21:17,172 INFO ]: SmtParser initialized [2018-06-25 09:21:17,173 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/fpice/inductive5.smt2 [2018-06-25 09:21:17,174 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 [2018-06-25 09:21:17,270 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/fpice/inductive5.smt2 unknown [2018-06-25 09:21:17,458 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/fpice/inductive5.smt2 [2018-06-25 09:21:17,466 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:21:17,473 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:21:17,474 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:21:17,474 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:21:17,474 INFO ]: ChcToBoogie initialized [2018-06-25 09:21:17,477 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:21:17" (1/1) ... [2018-06-25 09:21:17,531 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:17 Unit [2018-06-25 09:21:17,531 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:21:17,535 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:21:17,536 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:21:17,536 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:21:17,552 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:17" (1/1) ... [2018-06-25 09:21:17,553 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:17" (1/1) ... [2018-06-25 09:21:17,556 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:17" (1/1) ... [2018-06-25 09:21:17,556 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:17" (1/1) ... [2018-06-25 09:21:17,558 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:17" (1/1) ... [2018-06-25 09:21:17,559 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:17" (1/1) ... [2018-06-25 09:21:17,560 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:17" (1/1) ... [2018-06-25 09:21:17,561 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:21:17,562 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:21:17,562 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:21:17,562 INFO ]: RCFGBuilder initialized [2018-06-25 09:21:17,566 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:17" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:21:17,576 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:21:17,576 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:21:17,576 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:21:17,576 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:21:17,576 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:21:17,576 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 09:21:17,742 INFO ]: Using library mode [2018-06-25 09:21:17,742 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:21:17 BoogieIcfgContainer [2018-06-25 09:21:17,742 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:21:17,743 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:21:17,743 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:21:17,747 INFO ]: TraceAbstraction initialized [2018-06-25 09:21:17,747 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:21:17" (1/3) ... [2018-06-25 09:21:17,748 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f1fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:21:17, skipping insertion in model container [2018-06-25 09:21:17,748 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:21:17" (2/3) ... [2018-06-25 09:21:17,749 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f1fa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:21:17, skipping insertion in model container [2018-06-25 09:21:17,749 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:21:17" (3/3) ... [2018-06-25 09:21:17,751 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:21:17,760 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:21:17,768 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:21:17,807 INFO ]: Using default assertion order modulation [2018-06-25 09:21:17,807 INFO ]: Interprodecural is true [2018-06-25 09:21:17,807 INFO ]: Hoare is false [2018-06-25 09:21:17,807 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:21:17,807 INFO ]: Backedges is TWOTRACK [2018-06-25 09:21:17,807 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:21:17,808 INFO ]: Difference is false [2018-06-25 09:21:17,808 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:21:17,808 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:21:17,819 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 09:21:17,829 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 09:21:17,829 INFO ]: Found error trace [2018-06-25 09:21:17,830 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 09:21:17,830 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:17,834 INFO ]: Analyzing trace with hash 1574741524, now seen corresponding path program 1 times [2018-06-25 09:21:17,835 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:17,835 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:17,866 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:17,866 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:17,866 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:17,889 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:17,913 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:21:17,916 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:17,916 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 09:21:17,918 INFO ]: Interpolant automaton has 2 states [2018-06-25 09:21:17,929 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 09:21:17,930 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:21:17,932 INFO ]: Start difference. First operand 10 states. Second operand 2 states. [2018-06-25 09:21:17,950 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:17,950 INFO ]: Finished difference Result 8 states and 10 transitions. [2018-06-25 09:21:17,950 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 09:21:17,951 INFO ]: Start accepts. Automaton has 2 states. Word has length 6 [2018-06-25 09:21:17,952 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:17,967 INFO ]: With dead ends: 8 [2018-06-25 09:21:17,967 INFO ]: Without dead ends: 8 [2018-06-25 09:21:17,969 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:21:17,982 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-25 09:21:17,996 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-25 09:21:17,997 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 09:21:17,997 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-06-25 09:21:17,999 INFO ]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2018-06-25 09:21:17,999 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:17,999 INFO ]: Abstraction has 8 states and 10 transitions. [2018-06-25 09:21:17,999 INFO ]: Interpolant automaton has 2 states. [2018-06-25 09:21:17,999 INFO ]: Start isEmpty. Operand 8 states and 10 transitions. [2018-06-25 09:21:17,999 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 09:21:17,999 INFO ]: Found error trace [2018-06-25 09:21:17,999 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:17,999 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:17,999 INFO ]: Analyzing trace with hash 1573235097, now seen corresponding path program 1 times [2018-06-25 09:21:18,000 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:18,000 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:18,001 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:18,001 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:18,001 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:18,016 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:18,150 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:21:18,150 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:18,150 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 09:21:18,151 INFO ]: Interpolant automaton has 3 states [2018-06-25 09:21:18,152 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 09:21:18,160 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 09:21:18,160 INFO ]: Start difference. First operand 8 states and 10 transitions. Second operand 3 states. [2018-06-25 09:21:18,265 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:18,265 INFO ]: Finished difference Result 11 states and 15 transitions. [2018-06-25 09:21:18,265 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 09:21:18,265 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 09:21:18,265 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:18,268 INFO ]: With dead ends: 11 [2018-06-25 09:21:18,268 INFO ]: Without dead ends: 11 [2018-06-25 09:21:18,268 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 [2018-06-25 09:21:18,268 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 09:21:18,270 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-25 09:21:18,271 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 09:21:18,271 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-06-25 09:21:18,271 INFO ]: Start accepts. Automaton has 9 states and 13 transitions. Word has length 7 [2018-06-25 09:21:18,271 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:18,271 INFO ]: Abstraction has 9 states and 13 transitions. [2018-06-25 09:21:18,271 INFO ]: Interpolant automaton has 3 states. [2018-06-25 09:21:18,271 INFO ]: Start isEmpty. Operand 9 states and 13 transitions. [2018-06-25 09:21:18,271 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 09:21:18,271 INFO ]: Found error trace [2018-06-25 09:21:18,272 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:21:18,272 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:21:18,272 INFO ]: Analyzing trace with hash 1573086142, now seen corresponding path program 1 times [2018-06-25 09:21:18,272 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:21:18,272 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:21:18,273 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:18,273 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:21:18,273 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:21:18,281 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:21:18,318 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:21:18,318 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:21:18,318 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 09:21:18,318 INFO ]: Interpolant automaton has 3 states [2018-06-25 09:21:18,318 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 09:21:18,318 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 09:21:18,318 INFO ]: Start difference. First operand 9 states and 13 transitions. Second operand 3 states. [2018-06-25 09:21:18,335 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:21:18,335 INFO ]: Finished difference Result 4 states and 3 transitions. [2018-06-25 09:21:18,335 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 09:21:18,335 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 09:21:18,336 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:21:18,336 INFO ]: With dead ends: 4 [2018-06-25 09:21:18,336 INFO ]: Without dead ends: 0 [2018-06-25 09:21:18,336 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 [2018-06-25 09:21:18,336 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:21:18,336 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:21:18,336 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:21:18,336 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:21:18,336 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-06-25 09:21:18,336 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:21:18,336 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:21:18,336 INFO ]: Interpolant automaton has 3 states. [2018-06-25 09:21:18,336 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:21:18,336 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:21:18,341 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:21:18 BoogieIcfgContainer [2018-06-25 09:21:18,341 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:21:18,341 INFO ]: Toolchain (without parser) took 875.09 ms. Allocated memory is still 309.3 MB. Free memory was 265.8 MB in the beginning and 233.9 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:18,343 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:21:18,343 INFO ]: ChcToBoogie took 61.50 ms. Allocated memory is still 309.3 MB. Free memory was 265.8 MB in the beginning and 263.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:18,344 INFO ]: Boogie Preprocessor took 26.00 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 261.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:18,344 INFO ]: RCFGBuilder took 180.40 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 253.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:18,345 INFO ]: TraceAbstraction took 597.32 ms. Allocated memory is still 309.3 MB. Free memory was 253.9 MB in the beginning and 233.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 3.6 GB. [2018-06-25 09:21:18,348 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 274.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 61.50 ms. Allocated memory is still 309.3 MB. Free memory was 265.8 MB in the beginning and 263.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 26.00 ms. Allocated memory is still 309.3 MB. Free memory was 263.9 MB in the beginning and 261.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 180.40 ms. Allocated memory is still 309.3 MB. Free memory was 261.9 MB in the beginning and 253.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 597.32 ms. Allocated memory is still 309.3 MB. Free memory was 253.9 MB in the beginning and 233.9 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 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, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 20 SDtfs, 2 SDslu, 7 SDs, 0 SdLazy, 6 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 163 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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/inductive5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-21-18-359.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive5.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-21-18-359.csv Received shutdown request...