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/eldarica-misc/LIA/HOLA/39.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:50:50,951 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:50:50,953 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:50:50,964 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:50:50,965 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:50:50,966 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:50:50,967 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:50:50,970 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:50:50,971 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:50:50,973 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:50:50,973 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:50:50,974 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:50:50,974 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:50:50,976 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:50:50,976 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:50:50,977 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:50:50,979 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:50:50,981 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:50:50,982 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:50:50,983 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:50:50,984 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:50:50,987 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:50:50,987 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:50:50,987 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:50:50,988 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:50:50,989 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:50:50,990 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:50:50,991 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:50:50,992 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:50:50,992 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:50:50,992 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:50:50,993 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:50:50,993 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:50:50,994 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:50:50,995 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:50:50,995 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:50:51,009 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:50:51,009 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:50:51,009 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:50:51,010 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:50:51,010 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:50:51,011 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:50:51,011 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:50:51,011 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:50:51,011 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:50:51,011 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:50:51,012 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:50:51,012 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:50:51,012 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:50:51,012 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:50:51,012 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:50:51,012 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:50:51,013 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:50:51,013 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:50:51,013 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:50:51,013 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:50:51,013 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:50:51,015 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:50:51,015 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:50:51,059 INFO ]: Repository-Root is: /tmp [2018-06-25 08:50:51,077 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:50:51,083 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:50:51,086 INFO ]: Initializing SmtParser... [2018-06-25 08:50:51,086 INFO ]: SmtParser initialized [2018-06-25 08:50:51,087 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/39.c.smt2 [2018-06-25 08:50:51,088 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 08:50:51,178 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/39.c.smt2 unknown [2018-06-25 08:50:51,717 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/39.c.smt2 [2018-06-25 08:50:51,722 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:50:51,728 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:50:51,728 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:50:51,728 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:50:51,728 INFO ]: ChcToBoogie initialized [2018-06-25 08:50:51,732 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:50:51" (1/1) ... [2018-06-25 08:50:51,812 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:50:51 Unit [2018-06-25 08:50:51,812 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:50:51,813 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:50:51,813 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:50:51,813 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:50:51,835 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:50:51" (1/1) ... [2018-06-25 08:50:51,835 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:50:51" (1/1) ... [2018-06-25 08:50:51,848 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:50:51" (1/1) ... [2018-06-25 08:50:51,848 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:50:51" (1/1) ... [2018-06-25 08:50:51,865 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:50:51" (1/1) ... [2018-06-25 08:50:51,866 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:50:51" (1/1) ... [2018-06-25 08:50:51,868 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:50:51" (1/1) ... [2018-06-25 08:50:51,877 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:50:51,878 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:50:51,878 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:50:51,878 INFO ]: RCFGBuilder initialized [2018-06-25 08:50:51,879 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:50:51" (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 08:50:51,908 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:50:51,908 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:50:51,908 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:50:51,908 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:50:51,908 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:50:51,908 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 08:50:52,587 INFO ]: Using library mode [2018-06-25 08:50:52,588 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:50:52 BoogieIcfgContainer [2018-06-25 08:50:52,588 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:50:52,589 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:50:52,589 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:50:52,594 INFO ]: TraceAbstraction initialized [2018-06-25 08:50:52,595 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:50:51" (1/3) ... [2018-06-25 08:50:52,595 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c27033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:50:52, skipping insertion in model container [2018-06-25 08:50:52,595 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:50:51" (2/3) ... [2018-06-25 08:50:52,596 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c27033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:50:52, skipping insertion in model container [2018-06-25 08:50:52,596 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:50:52" (3/3) ... [2018-06-25 08:50:52,598 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:50:52,607 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:50:52,616 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:50:52,666 INFO ]: Using default assertion order modulation [2018-06-25 08:50:52,666 INFO ]: Interprodecural is true [2018-06-25 08:50:52,667 INFO ]: Hoare is false [2018-06-25 08:50:52,667 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:50:52,667 INFO ]: Backedges is TWOTRACK [2018-06-25 08:50:52,667 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:50:52,667 INFO ]: Difference is false [2018-06-25 08:50:52,667 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:50:52,667 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:50:52,686 INFO ]: Start isEmpty. Operand 29 states. [2018-06-25 08:50:52,704 INFO ]: Finished isEmpty. Found accepting run of length 19 [2018-06-25 08:50:52,704 INFO ]: Found error trace [2018-06-25 08:50:52,705 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:50:52,706 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:50:52,711 INFO ]: Analyzing trace with hash 1690295750, now seen corresponding path program 1 times [2018-06-25 08:50:52,713 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:50:52,713 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:50:52,760 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:50:52,760 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:50:52,760 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:50:52,888 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:50:53,265 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:50:53,266 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:50:53,267 INFO ]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-06-25 08:50:53,268 INFO ]: Interpolant automaton has 10 states [2018-06-25 08:50:53,279 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 08:50:53,279 INFO ]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-06-25 08:50:53,281 INFO ]: Start difference. First operand 29 states. Second operand 10 states. [2018-06-25 08:50:54,195 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:50:54,195 INFO ]: Finished difference Result 46 states and 47 transitions. [2018-06-25 08:50:54,196 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-25 08:50:54,196 INFO ]: Start accepts. Automaton has 10 states. Word has length 18 [2018-06-25 08:50:54,197 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:50:54,203 INFO ]: With dead ends: 46 [2018-06-25 08:50:54,204 INFO ]: Without dead ends: 43 [2018-06-25 08:50:54,206 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2018-06-25 08:50:54,223 INFO ]: Start minimizeSevpa. Operand 43 states. [2018-06-25 08:50:54,239 INFO ]: Finished minimizeSevpa. Reduced states from 43 to 32. [2018-06-25 08:50:54,241 INFO ]: Start removeUnreachable. Operand 32 states. [2018-06-25 08:50:54,242 INFO ]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2018-06-25 08:50:54,244 INFO ]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 18 [2018-06-25 08:50:54,244 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:50:54,244 INFO ]: Abstraction has 32 states and 33 transitions. [2018-06-25 08:50:54,244 INFO ]: Interpolant automaton has 10 states. [2018-06-25 08:50:54,244 INFO ]: Start isEmpty. Operand 32 states and 33 transitions. [2018-06-25 08:50:54,245 INFO ]: Finished isEmpty. Found accepting run of length 21 [2018-06-25 08:50:54,245 INFO ]: Found error trace [2018-06-25 08:50:54,245 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:50:54,246 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:50:54,246 INFO ]: Analyzing trace with hash 736387855, now seen corresponding path program 1 times [2018-06-25 08:50:54,246 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:50:54,246 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:50:54,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:50:54,247 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:50:54,247 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:50:54,312 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:50:54,745 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:50:54,745 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:50:54,745 INFO ]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-06-25 08:50:54,747 INFO ]: Interpolant automaton has 12 states [2018-06-25 08:50:54,747 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 08:50:54,747 INFO ]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2018-06-25 08:50:54,747 INFO ]: Start difference. First operand 32 states and 33 transitions. Second operand 12 states. [2018-06-25 08:50:55,342 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:50:55,342 INFO ]: Finished difference Result 53 states and 54 transitions. [2018-06-25 08:50:55,343 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-06-25 08:50:55,343 INFO ]: Start accepts. Automaton has 12 states. Word has length 20 [2018-06-25 08:50:55,344 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:50:55,345 INFO ]: With dead ends: 53 [2018-06-25 08:50:55,345 INFO ]: Without dead ends: 50 [2018-06-25 08:50:55,346 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2018-06-25 08:50:55,346 INFO ]: Start minimizeSevpa. Operand 50 states. [2018-06-25 08:50:55,349 INFO ]: Finished minimizeSevpa. Reduced states from 50 to 34. [2018-06-25 08:50:55,349 INFO ]: Start removeUnreachable. Operand 34 states. [2018-06-25 08:50:55,350 INFO ]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2018-06-25 08:50:55,350 INFO ]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 20 [2018-06-25 08:50:55,350 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:50:55,350 INFO ]: Abstraction has 34 states and 35 transitions. [2018-06-25 08:50:55,350 INFO ]: Interpolant automaton has 12 states. [2018-06-25 08:50:55,350 INFO ]: Start isEmpty. Operand 34 states and 35 transitions. [2018-06-25 08:50:55,351 INFO ]: Finished isEmpty. Found accepting run of length 31 [2018-06-25 08:50:55,351 INFO ]: Found error trace [2018-06-25 08:50:55,351 INFO ]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:50:55,351 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:50:55,351 INFO ]: Analyzing trace with hash 454525, now seen corresponding path program 1 times [2018-06-25 08:50:55,351 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:50:55,351 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:50:55,351 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:50:55,351 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:50:55,351 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:50:55,387 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:50:55,926 INFO ]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:50:55,926 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:50:55,926 INFO ]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2018-06-25 08:50:55,927 INFO ]: Interpolant automaton has 22 states [2018-06-25 08:50:55,927 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-25 08:50:55,927 INFO ]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2018-06-25 08:50:55,927 INFO ]: Start difference. First operand 34 states and 35 transitions. Second operand 22 states. [2018-06-25 08:50:56,717 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:50:56,717 INFO ]: Finished difference Result 46 states and 46 transitions. [2018-06-25 08:50:56,719 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-25 08:50:56,719 INFO ]: Start accepts. Automaton has 22 states. Word has length 30 [2018-06-25 08:50:56,719 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:50:56,719 INFO ]: With dead ends: 46 [2018-06-25 08:50:56,720 INFO ]: Without dead ends: 33 [2018-06-25 08:50:56,720 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2018-06-25 08:50:56,720 INFO ]: Start minimizeSevpa. Operand 33 states. [2018-06-25 08:50:56,724 INFO ]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-06-25 08:50:56,724 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-25 08:50:56,725 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2018-06-25 08:50:56,726 INFO ]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2018-06-25 08:50:56,726 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:50:56,726 INFO ]: Abstraction has 33 states and 33 transitions. [2018-06-25 08:50:56,726 INFO ]: Interpolant automaton has 22 states. [2018-06-25 08:50:56,726 INFO ]: Start isEmpty. Operand 33 states and 33 transitions. [2018-06-25 08:50:56,726 INFO ]: Finished isEmpty. Found accepting run of length 33 [2018-06-25 08:50:56,726 INFO ]: Found error trace [2018-06-25 08:50:56,727 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:50:56,727 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:50:56,727 INFO ]: Analyzing trace with hash 1189662534, now seen corresponding path program 1 times [2018-06-25 08:50:56,727 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:50:56,727 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:50:56,728 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:50:56,728 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:50:56,728 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:50:56,760 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:50:57,177 INFO ]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:50:57,178 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:50:57,178 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 08:50:57,193 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:50:57,346 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:50:57,362 INFO ]: Computing forward predicates... [2018-06-25 08:50:58,144 INFO ]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:50:58,170 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:50:58,170 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 38 [2018-06-25 08:50:58,170 INFO ]: Interpolant automaton has 38 states [2018-06-25 08:50:58,171 INFO ]: Constructing interpolant automaton starting with 38 interpolants. [2018-06-25 08:50:58,171 INFO ]: CoverageRelationStatistics Valid=91, Invalid=1315, Unknown=0, NotChecked=0, Total=1406 [2018-06-25 08:50:58,172 INFO ]: Start difference. First operand 33 states and 33 transitions. Second operand 38 states. [2018-06-25 08:50:59,386 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:50:59,386 INFO ]: Finished difference Result 35 states and 35 transitions. [2018-06-25 08:50:59,387 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-25 08:50:59,387 INFO ]: Start accepts. Automaton has 38 states. Word has length 32 [2018-06-25 08:50:59,387 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:50:59,387 INFO ]: With dead ends: 35 [2018-06-25 08:50:59,387 INFO ]: Without dead ends: 0 [2018-06-25 08:50:59,388 INFO ]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=528, Invalid=2664, Unknown=0, NotChecked=0, Total=3192 [2018-06-25 08:50:59,388 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 08:50:59,388 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 08:50:59,388 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 08:50:59,388 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 08:50:59,389 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2018-06-25 08:50:59,389 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:50:59,389 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 08:50:59,389 INFO ]: Interpolant automaton has 38 states. [2018-06-25 08:50:59,389 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 08:50:59,389 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 08:50:59,395 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:50:59 BoogieIcfgContainer [2018-06-25 08:50:59,396 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:50:59,396 INFO ]: Toolchain (without parser) took 7674.36 ms. Allocated memory was 308.8 MB in the beginning and 429.9 MB in the end (delta: 121.1 MB). Free memory was 234.2 MB in the beginning and 371.7 MB in the end (delta: -137.5 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:50:59,398 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:50:59,398 INFO ]: ChcToBoogie took 84.50 ms. Allocated memory is still 308.8 MB. Free memory was 234.2 MB in the beginning and 231.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:50:59,398 INFO ]: Boogie Preprocessor took 64.31 ms. Allocated memory is still 308.8 MB. Free memory was 231.2 MB in the beginning and 229.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:50:59,399 INFO ]: RCFGBuilder took 709.91 ms. Allocated memory was 308.8 MB in the beginning and 324.5 MB in the end (delta: 15.7 MB). Free memory was 229.2 MB in the beginning and 290.6 MB in the end (delta: -61.4 MB). Peak memory consumption was 47.1 MB. Max. memory is 3.6 GB. [2018-06-25 08:50:59,399 INFO ]: TraceAbstraction took 6806.65 ms. Allocated memory was 324.5 MB in the beginning and 429.9 MB in the end (delta: 105.4 MB). Free memory was 290.6 MB in the beginning and 371.7 MB in the end (delta: -81.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 3.6 GB. [2018-06-25 08:50:59,411 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 84.50 ms. Allocated memory is still 308.8 MB. Free memory was 234.2 MB in the beginning and 231.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 64.31 ms. Allocated memory is still 308.8 MB. Free memory was 231.2 MB in the beginning and 229.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 709.91 ms. Allocated memory was 308.8 MB in the beginning and 324.5 MB in the end (delta: 15.7 MB). Free memory was 229.2 MB in the beginning and 290.6 MB in the end (delta: -61.4 MB). Peak memory consumption was 47.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6806.65 ms. Allocated memory was 324.5 MB in the beginning and 429.9 MB in the end (delta: 105.4 MB). Free memory was 290.6 MB in the beginning and 371.7 MB in the end (delta: -81.1 MB). Peak memory consumption was 24.3 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 2 procedures, 29 locations, 1 error locations. SAFE Result, 6.7s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 3.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 82 SDtfs, 402 SDslu, 889 SDs, 0 SdLazy, 669 SolverSat, 312 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 4.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=2, 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, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 15796 SizeOfPredicates, 65 NumberOfNonLiveVariables, 1136 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 10/19 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/39.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-50-59-425.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/39.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-50-59-425.csv Received shutdown request...