java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/sum_intro.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:36:16,108 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:36:16,110 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:36:16,122 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:36:16,123 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:36:16,124 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:36:16,125 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:36:16,127 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:36:16,129 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:36:16,130 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:36:16,131 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:36:16,131 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:36:16,132 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:36:16,133 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:36:16,134 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:36:16,135 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:36:16,137 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:36:16,139 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:36:16,141 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:36:16,143 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:36:16,144 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:36:16,147 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:36:16,147 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:36:16,148 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:36:16,149 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:36:16,150 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:36:16,151 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:36:16,151 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:36:16,153 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:36:16,153 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:36:16,154 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:36:16,155 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:36:16,155 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:36:16,156 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:36:16,157 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:36:16,157 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:36:16,172 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:36:16,172 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:36:16,173 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:36:16,173 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:36:16,174 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:36:16,175 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:36:16,175 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:36:16,175 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:36:16,176 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:36:16,176 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:36:16,176 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:36:16,176 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:36:16,177 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:36:16,177 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:36:16,177 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:36:16,177 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:36:16,178 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:36:16,178 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:36:16,178 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:36:16,180 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:36:16,180 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:36:16,233 INFO ]: Repository-Root is: /tmp [2018-06-22 11:36:16,256 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:36:16,262 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:36:16,264 INFO ]: Initializing SmtParser... [2018-06-22 11:36:16,265 INFO ]: SmtParser initialized [2018-06-22 11:36:16,265 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sum_intro.smt2 [2018-06-22 11:36:16,267 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 11:36:16,364 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sum_intro.smt2 unknown [2018-06-22 11:36:16,515 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sum_intro.smt2 [2018-06-22 11:36:16,520 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:36:16,528 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:36:16,529 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:36:16,529 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:36:16,529 INFO ]: ChcToBoogie initialized [2018-06-22 11:36:16,533 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:36:16" (1/1) ... [2018-06-22 11:36:16,582 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:16 Unit [2018-06-22 11:36:16,583 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:36:16,584 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:36:16,584 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:36:16,584 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:36:16,607 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:16" (1/1) ... [2018-06-22 11:36:16,607 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:16" (1/1) ... [2018-06-22 11:36:16,617 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:16" (1/1) ... [2018-06-22 11:36:16,617 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:16" (1/1) ... [2018-06-22 11:36:16,619 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:16" (1/1) ... [2018-06-22 11:36:16,621 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:16" (1/1) ... [2018-06-22 11:36:16,622 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:16" (1/1) ... [2018-06-22 11:36:16,623 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:36:16,627 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:36:16,627 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:36:16,627 INFO ]: RCFGBuilder initialized [2018-06-22 11:36:16,628 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:16" (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 11:36:16,643 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:36:16,643 INFO ]: Found specification of procedure False [2018-06-22 11:36:16,643 INFO ]: Found implementation of procedure False [2018-06-22 11:36:16,643 INFO ]: Specification and implementation of procedure sumDLRunknownCLN5 given in one single declaration [2018-06-22 11:36:16,643 INFO ]: Found specification of procedure sumDLRunknownCLN5 [2018-06-22 11:36:16,643 INFO ]: Found implementation of procedure sumDLRunknownCLN5 [2018-06-22 11:36:16,643 INFO ]: Specification and implementation of procedure addDLRunknownCLN3 given in one single declaration [2018-06-22 11:36:16,643 INFO ]: Found specification of procedure addDLRunknownCLN3 [2018-06-22 11:36:16,643 INFO ]: Found implementation of procedure addDLRunknownCLN3 [2018-06-22 11:36:16,643 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:36:16,643 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:36:16,643 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 11:36:16,861 INFO ]: Using library mode [2018-06-22 11:36:16,861 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:36:16 BoogieIcfgContainer [2018-06-22 11:36:16,861 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:36:16,863 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:36:16,863 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:36:16,873 INFO ]: TraceAbstraction initialized [2018-06-22 11:36:16,873 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:36:16" (1/3) ... [2018-06-22 11:36:16,874 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6a630a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:36:16, skipping insertion in model container [2018-06-22 11:36:16,874 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:16" (2/3) ... [2018-06-22 11:36:16,875 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e6a630a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:36:16, skipping insertion in model container [2018-06-22 11:36:16,875 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:36:16" (3/3) ... [2018-06-22 11:36:16,884 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:36:16,898 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:36:16,915 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:36:16,973 INFO ]: Using default assertion order modulation [2018-06-22 11:36:16,973 INFO ]: Interprodecural is true [2018-06-22 11:36:16,973 INFO ]: Hoare is false [2018-06-22 11:36:16,973 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:36:16,973 INFO ]: Backedges is TWOTRACK [2018-06-22 11:36:16,973 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:36:16,973 INFO ]: Difference is false [2018-06-22 11:36:16,974 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:36:16,974 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:36:16,989 INFO ]: Start isEmpty. Operand 17 states. [2018-06-22 11:36:17,001 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:36:17,001 INFO ]: Found error trace [2018-06-22 11:36:17,002 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:36:17,002 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:17,007 INFO ]: Analyzing trace with hash 65186843, now seen corresponding path program 1 times [2018-06-22 11:36:17,008 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:17,008 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:17,049 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:17,049 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:17,049 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:17,065 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:17,090 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:36:17,092 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:36:17,092 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:36:17,093 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:36:17,104 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:36:17,104 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:36:17,106 INFO ]: Start difference. First operand 17 states. Second operand 2 states. [2018-06-22 11:36:17,132 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:17,132 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 11:36:17,132 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:36:17,133 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:36:17,134 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:17,153 INFO ]: With dead ends: 15 [2018-06-22 11:36:17,153 INFO ]: Without dead ends: 15 [2018-06-22 11:36:17,155 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 [2018-06-22 11:36:17,177 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 11:36:17,197 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 11:36:17,199 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:36:17,199 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 11:36:17,201 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2018-06-22 11:36:17,201 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:17,201 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 11:36:17,201 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:36:17,201 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 11:36:17,202 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:36:17,203 INFO ]: Found error trace [2018-06-22 11:36:17,203 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:17,203 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:17,203 INFO ]: Analyzing trace with hash -1681371118, now seen corresponding path program 1 times [2018-06-22 11:36:17,203 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:17,203 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:17,204 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:17,204 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:17,204 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:17,223 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:17,268 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:36:17,268 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:36:17,268 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:36:17,270 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:36:17,270 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:36:17,270 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:36:17,270 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2018-06-22 11:36:17,326 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:17,326 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 11:36:17,327 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:36:17,327 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:36:17,327 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:17,329 INFO ]: With dead ends: 17 [2018-06-22 11:36:17,329 INFO ]: Without dead ends: 17 [2018-06-22 11:36:17,330 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:36:17,330 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 11:36:17,336 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 11:36:17,336 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 11:36:17,337 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 11:36:17,337 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2018-06-22 11:36:17,337 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:17,337 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 11:36:17,337 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:36:17,337 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 11:36:17,337 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:36:17,337 INFO ]: Found error trace [2018-06-22 11:36:17,337 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:17,338 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:17,338 INFO ]: Analyzing trace with hash 2102924213, now seen corresponding path program 1 times [2018-06-22 11:36:17,338 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:17,338 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:17,339 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:17,339 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:17,339 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:17,365 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:17,647 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:36:17,647 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:17,647 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 11:36:17,664 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:17,692 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:17,704 INFO ]: Computing forward predicates... [2018-06-22 11:36:18,399 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:36:18,434 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:18,434 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-22 11:36:18,435 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:36:18,435 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:36:18,435 INFO ]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:36:18,435 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 11 states. [2018-06-22 11:36:18,725 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:18,725 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 11:36:18,726 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:36:18,726 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 11:36:18,726 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:18,726 INFO ]: With dead ends: 19 [2018-06-22 11:36:18,726 INFO ]: Without dead ends: 19 [2018-06-22 11:36:18,727 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:36:18,727 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:36:18,730 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 11:36:18,730 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:36:18,731 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 11:36:18,731 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2018-06-22 11:36:18,731 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:18,731 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 11:36:18,731 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:36:18,731 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 11:36:18,732 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:36:18,732 INFO ]: Found error trace [2018-06-22 11:36:18,732 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:18,732 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:18,732 INFO ]: Analyzing trace with hash 1655466392, now seen corresponding path program 2 times [2018-06-22 11:36:18,732 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:18,732 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:18,733 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:18,733 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:18,733 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:18,749 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:19,254 INFO ]: Checked inductivity of 14 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-22 11:36:19,254 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:19,254 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 11:36:19,263 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:36:19,303 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:36:19,303 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:19,307 INFO ]: Computing forward predicates... [2018-06-22 11:36:19,709 INFO ]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:36:19,736 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:19,736 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 15 [2018-06-22 11:36:19,737 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:36:19,737 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:36:19,737 INFO ]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:36:19,737 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 15 states. [2018-06-22 11:36:20,052 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:20,052 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 11:36:20,052 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:36:20,052 INFO ]: Start accepts. Automaton has 15 states. Word has length 25 [2018-06-22 11:36:20,052 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:20,052 INFO ]: With dead ends: 15 [2018-06-22 11:36:20,053 INFO ]: Without dead ends: 0 [2018-06-22 11:36:20,053 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2018-06-22 11:36:20,053 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:36:20,053 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:36:20,053 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:36:20,053 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:36:20,053 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 11:36:20,053 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:20,053 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:36:20,053 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:36:20,053 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:36:20,053 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:36:20,058 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:36:20 BoogieIcfgContainer [2018-06-22 11:36:20,058 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:36:20,058 INFO ]: Toolchain (without parser) took 3537.91 ms. Allocated memory was 307.8 MB in the beginning and 325.1 MB in the end (delta: 17.3 MB). Free memory was 264.1 MB in the beginning and 254.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:20,060 INFO ]: SmtParser took 0.62 ms. Allocated memory is still 307.8 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:36:20,060 INFO ]: ChcToBoogie took 54.66 ms. Allocated memory is still 307.8 MB. Free memory was 264.1 MB in the beginning and 262.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:20,061 INFO ]: Boogie Preprocessor took 39.52 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:20,062 INFO ]: RCFGBuilder took 234.46 ms. Allocated memory is still 307.8 MB. Free memory was 260.1 MB in the beginning and 254.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:20,062 INFO ]: TraceAbstraction took 3194.94 ms. Allocated memory was 307.8 MB in the beginning and 325.1 MB in the end (delta: 17.3 MB). Free memory was 254.1 MB in the beginning and 254.2 MB in the end (delta: -28.7 kB). Peak memory consumption was 17.3 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:20,066 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.62 ms. Allocated memory is still 307.8 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.66 ms. Allocated memory is still 307.8 MB. Free memory was 264.1 MB in the beginning and 262.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 39.52 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 234.46 ms. Allocated memory is still 307.8 MB. Free memory was 260.1 MB in the beginning and 254.1 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3194.94 ms. Allocated memory was 307.8 MB in the beginning and 325.1 MB in the end (delta: 17.3 MB). Free memory was 254.1 MB in the beginning and 254.2 MB in the end (delta: -28.7 kB). Peak memory consumption was 17.3 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 4 procedures, 17 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 12 SDslu, 170 SDs, 0 SdLazy, 109 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 5656 SizeOfPredicates, 14 NumberOfNonLiveVariables, 127 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 16/34 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/sum_intro.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-36-20-078.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum_intro.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-36-20-078.csv Received shutdown request...