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/fpice/inductive5.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:25:27,096 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:25:27,098 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:25:27,115 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:25:27,115 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:25:27,116 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:25:27,119 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:25:27,121 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:25:27,123 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:25:27,123 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:25:27,125 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:25:27,125 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:25:27,126 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:25:27,127 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:25:27,128 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:25:27,128 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:25:27,132 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:25:27,134 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:25:27,144 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:25:27,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:25:27,146 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:25:27,148 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:25:27,149 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:25:27,155 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:25:27,156 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:25:27,157 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:25:27,157 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:25:27,158 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:25:27,159 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:25:27,159 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:25:27,159 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:25:27,160 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:25:27,160 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:25:27,164 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:25:27,165 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:25:27,165 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 11:25:27,185 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:25:27,186 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:25:27,187 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:25:27,187 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:25:27,188 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:25:27,188 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:25:27,188 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:25:27,189 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:25:27,189 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:25:27,189 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:25:27,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:25:27,189 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:25:27,189 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:25:27,190 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:25:27,192 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:25:27,192 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:25:27,192 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:25:27,192 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:25:27,193 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:25:27,195 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:25:27,195 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:25:27,241 INFO ]: Repository-Root is: /tmp [2018-06-22 11:25:27,253 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:25:27,257 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:25:27,258 INFO ]: Initializing SmtParser... [2018-06-22 11:25:27,258 INFO ]: SmtParser initialized [2018-06-22 11:25:27,259 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/fpice/inductive5.smt2 [2018-06-22 11:25:27,260 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 11:25:27,354 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/fpice/inductive5.smt2 unknown [2018-06-22 11:25:27,511 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/fpice/inductive5.smt2 [2018-06-22 11:25:27,516 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:25:27,521 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:25:27,522 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:25:27,522 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:25:27,522 INFO ]: ChcToBoogie initialized [2018-06-22 11:25:27,525 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:25:27" (1/1) ... [2018-06-22 11:25:27,572 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:27 Unit [2018-06-22 11:25:27,572 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:25:27,572 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:25:27,572 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:25:27,572 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:25:27,594 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:27" (1/1) ... [2018-06-22 11:25:27,595 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:27" (1/1) ... [2018-06-22 11:25:27,602 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:27" (1/1) ... [2018-06-22 11:25:27,602 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:27" (1/1) ... [2018-06-22 11:25:27,605 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:27" (1/1) ... [2018-06-22 11:25:27,607 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:27" (1/1) ... [2018-06-22 11:25:27,608 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:27" (1/1) ... [2018-06-22 11:25:27,610 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:25:27,610 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:25:27,610 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:25:27,610 INFO ]: RCFGBuilder initialized [2018-06-22 11:25:27,611 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:27" (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 11:25:27,635 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:25:27,635 INFO ]: Found specification of procedure False [2018-06-22 11:25:27,635 INFO ]: Found implementation of procedure False [2018-06-22 11:25:27,635 INFO ]: Specification and implementation of procedure fDLRunknownCLN2 given in one single declaration [2018-06-22 11:25:27,635 INFO ]: Found specification of procedure fDLRunknownCLN2 [2018-06-22 11:25:27,635 INFO ]: Found implementation of procedure fDLRunknownCLN2 [2018-06-22 11:25:27,635 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:25:27,635 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:25:27,635 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 11:25:27,919 INFO ]: Using library mode [2018-06-22 11:25:27,920 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:25:27 BoogieIcfgContainer [2018-06-22 11:25:27,920 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:25:27,928 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:25:27,928 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:25:27,931 INFO ]: TraceAbstraction initialized [2018-06-22 11:25:27,931 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:25:27" (1/3) ... [2018-06-22 11:25:27,932 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e26ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:25:27, skipping insertion in model container [2018-06-22 11:25:27,932 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:27" (2/3) ... [2018-06-22 11:25:27,932 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e26ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:25:27, skipping insertion in model container [2018-06-22 11:25:27,933 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:25:27" (3/3) ... [2018-06-22 11:25:27,939 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:25:27,949 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:25:27,960 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:25:28,003 INFO ]: Using default assertion order modulation [2018-06-22 11:25:28,003 INFO ]: Interprodecural is true [2018-06-22 11:25:28,003 INFO ]: Hoare is false [2018-06-22 11:25:28,004 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:25:28,004 INFO ]: Backedges is TWOTRACK [2018-06-22 11:25:28,004 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:25:28,004 INFO ]: Difference is false [2018-06-22 11:25:28,004 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:25:28,004 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:25:28,017 INFO ]: Start isEmpty. Operand 14 states. [2018-06-22 11:25:28,029 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:25:28,029 INFO ]: Found error trace [2018-06-22 11:25:28,030 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:25:28,030 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:28,036 INFO ]: Analyzing trace with hash 67482740, now seen corresponding path program 1 times [2018-06-22 11:25:28,038 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:28,039 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:28,072 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:28,072 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:28,072 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:28,085 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:28,115 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:25:28,116 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:25:28,116 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:25:28,118 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:25:28,129 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:25:28,129 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:25:28,131 INFO ]: Start difference. First operand 14 states. Second operand 2 states. [2018-06-22 11:25:28,149 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:28,149 INFO ]: Finished difference Result 12 states and 16 transitions. [2018-06-22 11:25:28,149 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:25:28,150 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:25:28,151 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:28,162 INFO ]: With dead ends: 12 [2018-06-22 11:25:28,162 INFO ]: Without dead ends: 12 [2018-06-22 11:25:28,164 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 11:25:28,176 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 11:25:28,197 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 11:25:28,198 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 11:25:28,199 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-06-22 11:25:28,200 INFO ]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 5 [2018-06-22 11:25:28,201 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:28,201 INFO ]: Abstraction has 12 states and 16 transitions. [2018-06-22 11:25:28,201 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:25:28,201 INFO ]: Start isEmpty. Operand 12 states and 16 transitions. [2018-06-22 11:25:28,202 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:25:28,202 INFO ]: Found error trace [2018-06-22 11:25:28,202 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:25:28,203 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:28,203 INFO ]: Analyzing trace with hash -133290683, now seen corresponding path program 1 times [2018-06-22 11:25:28,203 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:28,203 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:28,205 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:28,205 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:28,205 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:28,235 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:28,298 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:25:28,298 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:25:28,299 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:25:28,300 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:25:28,300 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:25:28,301 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:25:28,301 INFO ]: Start difference. First operand 12 states and 16 transitions. Second operand 4 states. [2018-06-22 11:25:28,368 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:28,368 INFO ]: Finished difference Result 14 states and 19 transitions. [2018-06-22 11:25:28,369 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:25:28,369 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:25:28,369 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:28,370 INFO ]: With dead ends: 14 [2018-06-22 11:25:28,370 INFO ]: Without dead ends: 14 [2018-06-22 11:25:28,370 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 11:25:28,371 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 11:25:28,379 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 11:25:28,379 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 11:25:28,380 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2018-06-22 11:25:28,380 INFO ]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 9 [2018-06-22 11:25:28,380 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:28,381 INFO ]: Abstraction has 14 states and 19 transitions. [2018-06-22 11:25:28,381 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:25:28,381 INFO ]: Start isEmpty. Operand 14 states and 19 transitions. [2018-06-22 11:25:28,381 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:25:28,381 INFO ]: Found error trace [2018-06-22 11:25:28,381 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:25:28,381 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:28,381 INFO ]: Analyzing trace with hash -18774079, now seen corresponding path program 1 times [2018-06-22 11:25:28,381 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:28,382 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:28,382 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:28,382 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:28,382 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:28,390 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:28,436 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:25:28,436 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:25:28,436 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:25:28,437 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:25:28,437 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:25:28,437 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:25:28,437 INFO ]: Start difference. First operand 14 states and 19 transitions. Second operand 4 states. [2018-06-22 11:25:28,502 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:28,502 INFO ]: Finished difference Result 16 states and 22 transitions. [2018-06-22 11:25:28,503 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:25:28,503 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:25:28,503 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:28,503 INFO ]: With dead ends: 16 [2018-06-22 11:25:28,503 INFO ]: Without dead ends: 16 [2018-06-22 11:25:28,503 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 11:25:28,504 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-22 11:25:28,507 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 14. [2018-06-22 11:25:28,507 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 11:25:28,507 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2018-06-22 11:25:28,507 INFO ]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 9 [2018-06-22 11:25:28,508 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:28,508 INFO ]: Abstraction has 14 states and 19 transitions. [2018-06-22 11:25:28,508 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:25:28,508 INFO ]: Start isEmpty. Operand 14 states and 19 transitions. [2018-06-22 11:25:28,508 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:25:28,508 INFO ]: Found error trace [2018-06-22 11:25:28,508 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:25:28,509 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:28,509 INFO ]: Analyzing trace with hash 824519079, now seen corresponding path program 1 times [2018-06-22 11:25:28,509 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:28,509 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:28,510 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:28,510 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:28,510 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:28,523 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:28,564 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:25:28,564 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:25:28,564 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:25:28,564 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:25:28,564 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:25:28,564 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:25:28,565 INFO ]: Start difference. First operand 14 states and 19 transitions. Second operand 4 states. [2018-06-22 11:25:28,622 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:28,622 INFO ]: Finished difference Result 12 states and 18 transitions. [2018-06-22 11:25:28,623 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:25:28,623 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 11:25:28,623 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:28,623 INFO ]: With dead ends: 12 [2018-06-22 11:25:28,623 INFO ]: Without dead ends: 0 [2018-06-22 11:25:28,623 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 11:25:28,623 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:25:28,623 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:25:28,623 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:25:28,624 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:25:28,624 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2018-06-22 11:25:28,624 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:28,624 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:25:28,624 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:25:28,624 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:25:28,624 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:25:28,633 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:25:28 BoogieIcfgContainer [2018-06-22 11:25:28,633 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:25:28,634 INFO ]: Toolchain (without parser) took 1117.18 ms. Allocated memory is still 303.6 MB. Free memory was 260.1 MB in the beginning and 220.2 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:28,635 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 303.6 MB. Free memory is still 268.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:25:28,636 INFO ]: ChcToBoogie took 50.41 ms. Allocated memory is still 303.6 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:28,637 INFO ]: Boogie Preprocessor took 37.49 ms. Allocated memory is still 303.6 MB. Free memory was 258.1 MB in the beginning and 256.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:28,638 INFO ]: RCFGBuilder took 309.67 ms. Allocated memory is still 303.6 MB. Free memory was 256.1 MB in the beginning and 248.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:28,638 INFO ]: TraceAbstraction took 705.06 ms. Allocated memory is still 303.6 MB. Free memory was 248.1 MB in the beginning and 220.2 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:28,646 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 303.6 MB. Free memory is still 268.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 50.41 ms. Allocated memory is still 303.6 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.49 ms. Allocated memory is still 303.6 MB. Free memory was 258.1 MB in the beginning and 256.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 309.67 ms. Allocated memory is still 303.6 MB. Free memory was 256.1 MB in the beginning and 248.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 705.06 ms. Allocated memory is still 303.6 MB. Free memory was 248.1 MB in the beginning and 220.2 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 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 3 procedures, 14 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 2 SDslu, 50 SDs, 0 SdLazy, 33 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 496 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 3/3 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_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-25-28-662.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive5.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-25-28-662.csv Received shutdown request...