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/mochi/sum3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:33:49,303 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:33:49,305 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:33:49,316 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:33:49,317 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:33:49,318 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:33:49,322 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:33:49,324 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:33:49,325 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:33:49,327 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:33:49,328 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:33:49,328 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:33:49,329 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:33:49,330 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:33:49,333 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:33:49,334 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:33:49,335 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:33:49,347 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:33:49,349 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:33:49,350 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:33:49,351 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:33:49,353 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:33:49,353 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:33:49,353 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:33:49,359 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:33:49,361 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:33:49,361 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:33:49,362 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:33:49,363 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:33:49,363 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:33:49,364 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:33:49,364 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:33:49,365 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:33:49,370 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:33:49,371 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:33:49,371 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:33:49,395 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:33:49,395 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:33:49,395 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:33:49,395 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:33:49,396 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:33:49,397 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:33:49,397 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:33:49,398 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:33:49,398 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:33:49,398 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:33:49,398 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:33:49,398 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:33:49,399 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:33:49,399 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:33:49,399 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:33:49,399 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:33:49,399 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:33:49,399 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:33:49,400 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:33:49,400 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:33:49,400 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:33:49,404 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:33:49,405 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:33:49,450 INFO ]: Repository-Root is: /tmp [2018-06-25 09:33:49,466 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:33:49,473 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:33:49,478 INFO ]: Initializing SmtParser... [2018-06-25 09:33:49,478 INFO ]: SmtParser initialized [2018-06-25 09:33:49,479 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sum3.smt2 [2018-06-25 09:33:49,480 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 09:33:49,567 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sum3.smt2 unknown [2018-06-25 09:33:49,697 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sum3.smt2 [2018-06-25 09:33:49,703 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:33:49,711 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:33:49,711 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:33:49,711 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:33:49,712 INFO ]: ChcToBoogie initialized [2018-06-25 09:33:49,715 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:33:49" (1/1) ... [2018-06-25 09:33:49,766 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:49 Unit [2018-06-25 09:33:49,766 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:33:49,767 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:33:49,767 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:33:49,767 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:33:49,787 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:49" (1/1) ... [2018-06-25 09:33:49,787 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:49" (1/1) ... [2018-06-25 09:33:49,792 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:49" (1/1) ... [2018-06-25 09:33:49,792 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:49" (1/1) ... [2018-06-25 09:33:49,794 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:49" (1/1) ... [2018-06-25 09:33:49,796 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:49" (1/1) ... [2018-06-25 09:33:49,797 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:49" (1/1) ... [2018-06-25 09:33:49,798 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:33:49,798 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:33:49,798 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:33:49,798 INFO ]: RCFGBuilder initialized [2018-06-25 09:33:49,800 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:49" (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) [2018-06-25 09:33:49,811 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:33:49,811 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:33:49,811 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:33:49,811 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:33:49,811 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:33:49,811 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 [2018-06-25 09:33:49,957 INFO ]: Using library mode [2018-06-25 09:33:49,957 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:33:49 BoogieIcfgContainer [2018-06-25 09:33:49,957 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:33:49,962 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:33:49,962 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:33:49,965 INFO ]: TraceAbstraction initialized [2018-06-25 09:33:49,966 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:33:49" (1/3) ... [2018-06-25 09:33:49,966 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7455e71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:33:49, skipping insertion in model container [2018-06-25 09:33:49,967 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:33:49" (2/3) ... [2018-06-25 09:33:49,967 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7455e71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:33:49, skipping insertion in model container [2018-06-25 09:33:49,967 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:33:49" (3/3) ... [2018-06-25 09:33:49,969 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:33:49,978 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:33:49,986 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:33:50,028 INFO ]: Using default assertion order modulation [2018-06-25 09:33:50,029 INFO ]: Interprodecural is true [2018-06-25 09:33:50,029 INFO ]: Hoare is false [2018-06-25 09:33:50,029 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:33:50,029 INFO ]: Backedges is TWOTRACK [2018-06-25 09:33:50,029 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:33:50,029 INFO ]: Difference is false [2018-06-25 09:33:50,029 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:33:50,029 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:33:50,041 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 09:33:50,052 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 09:33:50,052 INFO ]: Found error trace [2018-06-25 09:33:50,053 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 09:33:50,053 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:50,057 INFO ]: Analyzing trace with hash 1374330516, now seen corresponding path program 1 times [2018-06-25 09:33:50,058 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:50,059 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:50,091 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:50,091 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:50,091 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:50,114 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:50,148 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:50,150 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:33:50,150 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 09:33:50,151 INFO ]: Interpolant automaton has 2 states [2018-06-25 09:33:50,161 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 09:33:50,162 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:33:50,164 INFO ]: Start difference. First operand 10 states. Second operand 2 states. [2018-06-25 09:33:50,179 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:50,179 INFO ]: Finished difference Result 8 states and 8 transitions. [2018-06-25 09:33:50,180 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 09:33:50,180 INFO ]: Start accepts. Automaton has 2 states. Word has length 6 [2018-06-25 09:33:50,181 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:50,191 INFO ]: With dead ends: 8 [2018-06-25 09:33:50,191 INFO ]: Without dead ends: 8 [2018-06-25 09:33:50,192 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 09:33:50,205 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-25 09:33:50,219 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-25 09:33:50,220 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-25 09:33:50,220 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-06-25 09:33:50,221 INFO ]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-06-25 09:33:50,222 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:50,222 INFO ]: Abstraction has 8 states and 8 transitions. [2018-06-25 09:33:50,222 INFO ]: Interpolant automaton has 2 states. [2018-06-25 09:33:50,222 INFO ]: Start isEmpty. Operand 8 states and 8 transitions. [2018-06-25 09:33:50,222 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 09:33:50,222 INFO ]: Found error trace [2018-06-25 09:33:50,222 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:50,222 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:50,222 INFO ]: Analyzing trace with hash -344598444, now seen corresponding path program 1 times [2018-06-25 09:33:50,222 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:50,222 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:50,223 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:50,223 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:50,223 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:50,238 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:50,329 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:50,329 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:33:50,329 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 09:33:50,331 INFO ]: Interpolant automaton has 3 states [2018-06-25 09:33:50,331 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 09:33:50,331 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 09:33:50,331 INFO ]: Start difference. First operand 8 states and 8 transitions. Second operand 3 states. [2018-06-25 09:33:50,377 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:50,377 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 09:33:50,377 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 09:33:50,377 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 09:33:50,378 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:50,378 INFO ]: With dead ends: 9 [2018-06-25 09:33:50,378 INFO ]: Without dead ends: 9 [2018-06-25 09:33:50,379 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 09:33:50,379 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 09:33:50,380 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 09:33:50,380 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 09:33:50,381 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 09:33:50,381 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 09:33:50,382 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:50,382 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 09:33:50,382 INFO ]: Interpolant automaton has 3 states. [2018-06-25 09:33:50,382 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 09:33:50,382 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 09:33:50,382 INFO ]: Found error trace [2018-06-25 09:33:50,382 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:50,382 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:50,383 INFO ]: Analyzing trace with hash -2091788652, now seen corresponding path program 1 times [2018-06-25 09:33:50,383 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:50,383 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:50,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:50,384 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:50,384 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:50,408 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:50,595 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:50,595 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:33:50,595 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 [2018-06-25 09:33:50,605 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:50,651 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:50,660 INFO ]: Computing forward predicates... [2018-06-25 09:33:50,797 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:50,817 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:33:50,817 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-25 09:33:50,817 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:33:50,817 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:33:50,817 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:33:50,817 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2018-06-25 09:33:50,895 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:50,895 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-25 09:33:50,896 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 09:33:50,896 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 09:33:50,896 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:50,896 INFO ]: With dead ends: 10 [2018-06-25 09:33:50,896 INFO ]: Without dead ends: 10 [2018-06-25 09:33:50,896 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:33:50,896 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 09:33:50,898 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 09:33:50,898 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 09:33:50,898 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-25 09:33:50,898 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-25 09:33:50,898 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:50,898 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-25 09:33:50,898 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:33:50,898 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-25 09:33:50,898 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 09:33:50,898 INFO ]: Found error trace [2018-06-25 09:33:50,899 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:33:50,899 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:33:50,899 INFO ]: Analyzing trace with hash -420110252, now seen corresponding path program 2 times [2018-06-25 09:33:50,899 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:33:50,899 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:33:50,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:50,899 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:33:50,899 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:33:50,915 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:51,050 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:51,050 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:33:51,050 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 [2018-06-25 09:33:51,058 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 09:33:51,103 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 09:33:51,103 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:33:51,106 INFO ]: Computing forward predicates... [2018-06-25 09:33:51,232 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:33:51,255 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:33:51,256 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-06-25 09:33:51,256 INFO ]: Interpolant automaton has 5 states [2018-06-25 09:33:51,256 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 09:33:51,256 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:33:51,256 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 5 states. [2018-06-25 09:33:51,290 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:33:51,290 INFO ]: Finished difference Result 6 states and 6 transitions. [2018-06-25 09:33:51,290 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:33:51,290 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-25 09:33:51,290 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:33:51,290 INFO ]: With dead ends: 6 [2018-06-25 09:33:51,291 INFO ]: Without dead ends: 0 [2018-06-25 09:33:51,291 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:33:51,291 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:33:51,291 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:33:51,291 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:33:51,291 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:33:51,291 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-25 09:33:51,291 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:33:51,291 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:33:51,291 INFO ]: Interpolant automaton has 5 states. [2018-06-25 09:33:51,291 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:33:51,291 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:33:51,296 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:33:51 BoogieIcfgContainer [2018-06-25 09:33:51,296 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:33:51,296 INFO ]: Toolchain (without parser) took 1592.02 ms. Allocated memory is still 309.9 MB. Free memory was 267.2 MB in the beginning and 217.7 MB in the end (delta: 49.6 MB). Peak memory consumption was 49.6 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:51,298 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:33:51,298 INFO ]: ChcToBoogie took 55.11 ms. Allocated memory is still 309.9 MB. Free memory was 266.2 MB in the beginning and 264.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:51,298 INFO ]: Boogie Preprocessor took 31.17 ms. Allocated memory is still 309.9 MB. Free memory was 264.2 MB in the beginning and 263.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-25 09:33:51,299 INFO ]: RCFGBuilder took 159.15 ms. Allocated memory is still 309.9 MB. Free memory was 263.2 MB in the beginning and 257.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:51,299 INFO ]: TraceAbstraction took 1334.19 ms. Allocated memory is still 309.9 MB. Free memory was 256.2 MB in the beginning and 217.7 MB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 3.6 GB. [2018-06-25 09:33:51,303 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 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 55.11 ms. Allocated memory is still 309.9 MB. Free memory was 266.2 MB in the beginning and 264.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 31.17 ms. Allocated memory is still 309.9 MB. Free memory was 264.2 MB in the beginning and 263.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 159.15 ms. Allocated memory is still 309.9 MB. Free memory was 263.2 MB in the beginning and 257.2 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1334.19 ms. Allocated memory is still 309.9 MB. Free memory was 256.2 MB in the beginning and 217.7 MB in the end (delta: 38.6 MB). Peak memory consumption was 38.6 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, 1.2s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 0 SDslu, 21 SDs, 0 SdLazy, 22 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 747 SizeOfPredicates, 6 NumberOfNonLiveVariables, 93 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-33-51-317.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum3.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-33-51-317.csv Received shutdown request...