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/llreve-bench/smt2/rec__loop_rec.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 12:17:39,914 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 12:17:39,916 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 12:17:39,926 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 12:17:39,927 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 12:17:39,928 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 12:17:39,929 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 12:17:39,931 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 12:17:39,932 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 12:17:39,933 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 12:17:39,934 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 12:17:39,934 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 12:17:39,935 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 12:17:39,936 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 12:17:39,937 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 12:17:39,941 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 12:17:39,943 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 12:17:39,945 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 12:17:39,946 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 12:17:39,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 12:17:39,949 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 12:17:39,960 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 12:17:39,960 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 12:17:39,960 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 12:17:39,961 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 12:17:39,962 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 12:17:39,962 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 12:17:39,963 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 12:17:39,964 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 12:17:39,964 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 12:17:39,965 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 12:17:39,965 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 12:17:39,966 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 12:17:39,966 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 12:17:39,967 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 12:17:39,967 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 12:17:39,990 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 12:17:39,993 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 12:17:39,993 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 12:17:39,993 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 12:17:39,994 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 12:17:39,994 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 12:17:39,995 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 12:17:39,995 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 12:17:39,995 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 12:17:39,995 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 12:17:39,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 12:17:39,999 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 12:17:39,999 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 12:17:40,000 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 12:17:40,000 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 12:17:40,000 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 12:17:40,000 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 12:17:40,000 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 12:17:40,001 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 12:17:40,002 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 12:17:40,002 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 12:17:40,057 INFO ]: Repository-Root is: /tmp [2018-06-22 12:17:40,073 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 12:17:40,079 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 12:17:40,080 INFO ]: Initializing SmtParser... [2018-06-22 12:17:40,080 INFO ]: SmtParser initialized [2018-06-22 12:17:40,081 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/rec__loop_rec.smt2 [2018-06-22 12:17:40,082 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 12:17:40,172 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/rec__loop_rec.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@3ec66a8c [2018-06-22 12:17:40,424 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/rec__loop_rec.smt2 [2018-06-22 12:17:40,438 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 12:17:40,443 INFO ]: Walking toolchain with 4 elements. [2018-06-22 12:17:40,443 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 12:17:40,443 INFO ]: Initializing ChcToBoogie... [2018-06-22 12:17:40,443 INFO ]: ChcToBoogie initialized [2018-06-22 12:17:40,446 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:17:40" (1/1) ... [2018-06-22 12:17:40,500 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:17:40 Unit [2018-06-22 12:17:40,500 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 12:17:40,501 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 12:17:40,501 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 12:17:40,501 INFO ]: Boogie Preprocessor initialized [2018-06-22 12:17:40,521 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:17:40" (1/1) ... [2018-06-22 12:17:40,522 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:17:40" (1/1) ... [2018-06-22 12:17:40,529 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:17:40" (1/1) ... [2018-06-22 12:17:40,529 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:17:40" (1/1) ... [2018-06-22 12:17:40,534 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:17:40" (1/1) ... [2018-06-22 12:17:40,536 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:17:40" (1/1) ... [2018-06-22 12:17:40,538 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:17:40" (1/1) ... [2018-06-22 12:17:40,540 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 12:17:40,540 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 12:17:40,540 INFO ]: Initializing RCFGBuilder... [2018-06-22 12:17:40,540 INFO ]: RCFGBuilder initialized [2018-06-22 12:17:40,541 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:17:40" (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 12:17:40,556 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 12:17:40,556 INFO ]: Found specification of procedure False [2018-06-22 12:17:40,556 INFO ]: Found implementation of procedure False [2018-06-22 12:17:40,556 INFO ]: Specification and implementation of procedure INV_REC_tr__2 given in one single declaration [2018-06-22 12:17:40,556 INFO ]: Found specification of procedure INV_REC_tr__2 [2018-06-22 12:17:40,556 INFO ]: Found implementation of procedure INV_REC_tr__2 [2018-06-22 12:17:40,556 INFO ]: Specification and implementation of procedure INV_REC_tr__2_PRE given in one single declaration [2018-06-22 12:17:40,556 INFO ]: Found specification of procedure INV_REC_tr__2_PRE [2018-06-22 12:17:40,556 INFO ]: Found implementation of procedure INV_REC_tr__2_PRE [2018-06-22 12:17:40,556 INFO ]: Specification and implementation of procedure INV_42__2 given in one single declaration [2018-06-22 12:17:40,556 INFO ]: Found specification of procedure INV_42__2 [2018-06-22 12:17:40,556 INFO ]: Found implementation of procedure INV_42__2 [2018-06-22 12:17:40,556 INFO ]: Specification and implementation of procedure INV_42__2_PRE given in one single declaration [2018-06-22 12:17:40,556 INFO ]: Found specification of procedure INV_42__2_PRE [2018-06-22 12:17:40,556 INFO ]: Found implementation of procedure INV_42__2_PRE [2018-06-22 12:17:40,557 INFO ]: Specification and implementation of procedure INV_REC_tr__1 given in one single declaration [2018-06-22 12:17:40,557 INFO ]: Found specification of procedure INV_REC_tr__1 [2018-06-22 12:17:40,557 INFO ]: Found implementation of procedure INV_REC_tr__1 [2018-06-22 12:17:40,557 INFO ]: Specification and implementation of procedure INV_42__1 given in one single declaration [2018-06-22 12:17:40,557 INFO ]: Found specification of procedure INV_42__1 [2018-06-22 12:17:40,557 INFO ]: Found implementation of procedure INV_42__1 [2018-06-22 12:17:40,557 INFO ]: Specification and implementation of procedure INV_42__1_PRE given in one single declaration [2018-06-22 12:17:40,557 INFO ]: Found specification of procedure INV_42__1_PRE [2018-06-22 12:17:40,557 INFO ]: Found implementation of procedure INV_42__1_PRE [2018-06-22 12:17:40,557 INFO ]: Specification and implementation of procedure INV_REC_tr__1_PRE given in one single declaration [2018-06-22 12:17:40,557 INFO ]: Found specification of procedure INV_REC_tr__1_PRE [2018-06-22 12:17:40,557 INFO ]: Found implementation of procedure INV_REC_tr__1_PRE [2018-06-22 12:17:40,557 INFO ]: Specification and implementation of procedure INV_REC_tr^tr given in one single declaration [2018-06-22 12:17:40,557 INFO ]: Found specification of procedure INV_REC_tr^tr [2018-06-22 12:17:40,557 INFO ]: Found implementation of procedure INV_REC_tr^tr [2018-06-22 12:17:40,557 INFO ]: Specification and implementation of procedure INV_REC_tr^tr_PRE given in one single declaration [2018-06-22 12:17:40,557 INFO ]: Found specification of procedure INV_REC_tr^tr_PRE [2018-06-22 12:17:40,557 INFO ]: Found implementation of procedure INV_REC_tr^tr_PRE [2018-06-22 12:17:40,557 INFO ]: Specification and implementation of procedure INV_42 given in one single declaration [2018-06-22 12:17:40,557 INFO ]: Found specification of procedure INV_42 [2018-06-22 12:17:40,557 INFO ]: Found implementation of procedure INV_42 [2018-06-22 12:17:40,557 INFO ]: Specification and implementation of procedure INV_42_PRE given in one single declaration [2018-06-22 12:17:40,557 INFO ]: Found specification of procedure INV_42_PRE [2018-06-22 12:17:40,557 INFO ]: Found implementation of procedure INV_42_PRE [2018-06-22 12:17:40,557 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 12:17:40,557 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 12:17:40,557 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 12:17:40,897 INFO ]: Using library mode [2018-06-22 12:17:40,898 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:17:40 BoogieIcfgContainer [2018-06-22 12:17:40,898 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 12:17:40,899 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 12:17:40,899 INFO ]: Initializing TraceAbstraction... [2018-06-22 12:17:40,902 INFO ]: TraceAbstraction initialized [2018-06-22 12:17:40,902 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 12:17:40" (1/3) ... [2018-06-22 12:17:40,903 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b6bada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 12:17:40, skipping insertion in model container [2018-06-22 12:17:40,903 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 12:17:40" (2/3) ... [2018-06-22 12:17:40,903 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b6bada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 12:17:40, skipping insertion in model container [2018-06-22 12:17:40,903 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 12:17:40" (3/3) ... [2018-06-22 12:17:40,905 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 12:17:40,913 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 12:17:40,920 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 12:17:40,951 INFO ]: Using default assertion order modulation [2018-06-22 12:17:40,951 INFO ]: Interprodecural is true [2018-06-22 12:17:40,951 INFO ]: Hoare is false [2018-06-22 12:17:40,951 INFO ]: Compute interpolants for FPandBP [2018-06-22 12:17:40,951 INFO ]: Backedges is TWOTRACK [2018-06-22 12:17:40,951 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 12:17:40,951 INFO ]: Difference is false [2018-06-22 12:17:40,951 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 12:17:40,951 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 12:17:40,965 INFO ]: Start isEmpty. Operand 57 states. [2018-06-22 12:17:40,975 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 12:17:40,975 INFO ]: Found error trace [2018-06-22 12:17:40,976 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 12:17:40,976 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:17:40,981 INFO ]: Analyzing trace with hash 123950163, now seen corresponding path program 1 times [2018-06-22 12:17:40,983 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:17:40,983 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:17:41,022 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:17:41,022 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:17:41,022 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:17:41,037 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:17:41,057 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 12:17:41,059 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 12:17:41,059 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 12:17:41,062 INFO ]: Interpolant automaton has 2 states [2018-06-22 12:17:41,076 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 12:17:41,076 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 12:17:41,078 INFO ]: Start difference. First operand 57 states. Second operand 2 states. [2018-06-22 12:17:41,097 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:17:41,097 INFO ]: Finished difference Result 35 states and 31 transitions. [2018-06-22 12:17:41,097 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 12:17:41,099 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 12:17:41,099 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:17:41,120 INFO ]: With dead ends: 35 [2018-06-22 12:17:41,120 INFO ]: Without dead ends: 23 [2018-06-22 12:17:41,121 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 12:17:41,133 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 12:17:41,149 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 12:17:41,150 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 12:17:41,151 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2018-06-22 12:17:41,152 INFO ]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 5 [2018-06-22 12:17:41,152 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:17:41,152 INFO ]: Abstraction has 23 states and 23 transitions. [2018-06-22 12:17:41,152 INFO ]: Interpolant automaton has 2 states. [2018-06-22 12:17:41,152 INFO ]: Start isEmpty. Operand 23 states and 23 transitions. [2018-06-22 12:17:41,154 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 12:17:41,154 INFO ]: Found error trace [2018-06-22 12:17:41,154 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 12:17:41,154 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 12:17:41,154 INFO ]: Analyzing trace with hash 8710652, now seen corresponding path program 1 times [2018-06-22 12:17:41,154 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 12:17:41,154 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 12:17:41,155 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:17:41,155 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 12:17:41,155 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 12:17:41,190 INFO ]: Conjunction of SSA is unsat [2018-06-22 12:17:41,547 WARN ]: Spent 269.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 22 [2018-06-22 12:17:41,867 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 12:17:41,867 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 12:17:41,867 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 12:17:41,874 INFO ]: Interpolant automaton has 5 states [2018-06-22 12:17:41,874 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 12:17:41,874 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 12:17:41,874 INFO ]: Start difference. First operand 23 states and 23 transitions. Second operand 5 states. [2018-06-22 12:17:41,914 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 12:17:41,914 INFO ]: Finished difference Result 19 states and 19 transitions. [2018-06-22 12:17:41,915 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 12:17:41,915 INFO ]: Start accepts. Automaton has 5 states. Word has length 25 [2018-06-22 12:17:41,915 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 12:17:41,915 INFO ]: With dead ends: 19 [2018-06-22 12:17:41,915 INFO ]: Without dead ends: 0 [2018-06-22 12:17:41,916 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 12:17:41,916 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 12:17:41,916 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 12:17:41,916 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 12:17:41,916 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 12:17:41,916 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 12:17:41,916 INFO ]: Finished accepts. word is rejected. [2018-06-22 12:17:41,916 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 12:17:41,917 INFO ]: Interpolant automaton has 5 states. [2018-06-22 12:17:41,917 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 12:17:41,917 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 12:17:41,921 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 12:17:41 BoogieIcfgContainer [2018-06-22 12:17:41,921 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 12:17:41,922 INFO ]: Toolchain (without parser) took 1483.40 ms. Allocated memory is still 308.8 MB. Free memory was 263.9 MB in the beginning and 217.2 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 3.6 GB. [2018-06-22 12:17:41,923 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 274.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 12:17:41,923 INFO ]: ChcToBoogie took 57.17 ms. Allocated memory is still 308.8 MB. Free memory was 263.9 MB in the beginning and 261.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 12:17:41,924 INFO ]: Boogie Preprocessor took 38.54 ms. Allocated memory is still 308.8 MB. Free memory was 261.9 MB in the beginning and 260.9 MB in the end (delta: 996.4 kB). Peak memory consumption was 996.4 kB. Max. memory is 3.6 GB. [2018-06-22 12:17:41,924 INFO ]: RCFGBuilder took 357.84 ms. Allocated memory is still 308.8 MB. Free memory was 260.9 MB in the beginning and 250.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 3.6 GB. [2018-06-22 12:17:41,925 INFO ]: TraceAbstraction took 1021.96 ms. Allocated memory is still 308.8 MB. Free memory was 249.3 MB in the beginning and 217.2 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 MB. Max. memory is 3.6 GB. [2018-06-22 12:17:41,928 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 308.8 MB. Free memory is still 274.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 57.17 ms. Allocated memory is still 308.8 MB. Free memory was 263.9 MB in the beginning and 261.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.54 ms. Allocated memory is still 308.8 MB. Free memory was 261.9 MB in the beginning and 260.9 MB in the end (delta: 996.4 kB). Peak memory consumption was 996.4 kB. Max. memory is 3.6 GB. * RCFGBuilder took 357.84 ms. Allocated memory is still 308.8 MB. Free memory was 260.9 MB in the beginning and 250.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1021.96 ms. Allocated memory is still 308.8 MB. Free memory was 249.3 MB in the beginning and 217.2 MB in the end (delta: 32.1 MB). Peak memory consumption was 32.1 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 14 procedures, 57 locations, 1 error locations. SAFE Result, 0.9s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 49 SDtfs, 0 SDslu, 46 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 2824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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/rec__loop_rec.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_12-17-41-940.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/rec__loop_rec.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_12-17-41-940.csv Received shutdown request...