java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/hrec.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:33:20,884 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:33:20,886 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:33:20,901 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:33:20,902 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:33:20,903 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:33:20,906 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:33:20,908 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:33:20,910 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:33:20,910 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:33:20,912 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:33:20,912 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:33:20,913 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:33:20,914 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:33:20,916 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:33:20,917 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:33:20,919 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:33:20,928 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:33:20,930 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:33:20,931 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:33:20,932 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:33:20,934 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:33:20,934 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:33:20,934 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:33:20,935 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:33:20,936 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:33:20,937 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:33:20,937 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:33:20,938 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... 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[2018-06-22 11:33:20,941 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:33:20,964 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:33:20,964 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:33:20,964 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:33:20,964 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:33:20,965 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:33:20,966 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:33:20,966 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:33:20,966 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:33:20,966 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:33:20,966 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:33:20,970 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:33:20,970 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:33:20,970 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:33:20,970 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:33:20,971 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:33:20,971 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:33:20,971 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:33:20,972 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:33:20,972 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:33:20,975 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:33:20,975 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:33:21,019 INFO ]: Repository-Root is: /tmp [2018-06-22 11:33:21,032 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:33:21,036 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:33:21,037 INFO ]: Initializing SmtParser... [2018-06-22 11:33:21,038 INFO ]: SmtParser initialized [2018-06-22 11:33:21,038 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/hrec.smt2 [2018-06-22 11:33:21,040 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 11:33:21,137 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/hrec.smt2 unknown [2018-06-22 11:33:21,333 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/hrec.smt2 [2018-06-22 11:33:21,338 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:33:21,351 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:33:21,351 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:33:21,352 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:33:21,352 INFO ]: ChcToBoogie initialized [2018-06-22 11:33:21,355 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:33:21" (1/1) ... [2018-06-22 11:33:21,402 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:33:21 Unit [2018-06-22 11:33:21,402 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:33:21,402 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:33:21,403 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:33:21,403 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:33:21,424 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:33:21" (1/1) ... [2018-06-22 11:33:21,425 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:33:21" (1/1) ... [2018-06-22 11:33:21,436 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:33:21" (1/1) ... [2018-06-22 11:33:21,436 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:33:21" (1/1) ... [2018-06-22 11:33:21,439 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:33:21" (1/1) ... [2018-06-22 11:33:21,442 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:33:21" (1/1) ... [2018-06-22 11:33:21,443 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:33:21" (1/1) ... [2018-06-22 11:33:21,444 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:33:21,444 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:33:21,445 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:33:21,445 INFO ]: RCFGBuilder initialized [2018-06-22 11:33:21,448 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:33:21" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 11:33:21,461 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:33:21,461 INFO ]: Found specification of procedure False [2018-06-22 11:33:21,462 INFO ]: Found implementation of procedure False [2018-06-22 11:33:21,462 INFO ]: Specification and implementation of procedure fDLRunknownCLN4 given in one single declaration [2018-06-22 11:33:21,462 INFO ]: Found specification of procedure fDLRunknownCLN4 [2018-06-22 11:33:21,462 INFO ]: Found implementation of procedure fDLRunknownCLN4 [2018-06-22 11:33:21,462 INFO ]: Specification and implementation of procedure fDLRunknownCLN2 given in one single declaration [2018-06-22 11:33:21,462 INFO ]: Found specification of procedure fDLRunknownCLN2 [2018-06-22 11:33:21,462 INFO ]: Found implementation of procedure fDLRunknownCLN2 [2018-06-22 11:33:21,462 INFO ]: Specification and implementation of procedure succDLRunknownCLN6 given in one single declaration [2018-06-22 11:33:21,462 INFO ]: Found specification of procedure succDLRunknownCLN6 [2018-06-22 11:33:21,462 INFO ]: Found implementation of procedure succDLRunknownCLN6 [2018-06-22 11:33:21,462 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:33:21,462 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:33:21,462 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:33:21,754 INFO ]: Using library mode [2018-06-22 11:33:21,755 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:33:21 BoogieIcfgContainer [2018-06-22 11:33:21,755 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:33:21,756 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:33:21,756 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:33:21,763 INFO ]: TraceAbstraction initialized [2018-06-22 11:33:21,763 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:33:21" (1/3) ... [2018-06-22 11:33:21,764 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c66d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:33:21, skipping insertion in model container [2018-06-22 11:33:21,764 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:33:21" (2/3) ... [2018-06-22 11:33:21,764 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c66d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:33:21, skipping insertion in model container [2018-06-22 11:33:21,764 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:33:21" (3/3) ... [2018-06-22 11:33:21,766 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:33:21,775 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:33:21,787 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:33:21,840 INFO ]: Using default assertion order modulation [2018-06-22 11:33:21,840 INFO ]: Interprodecural is true [2018-06-22 11:33:21,840 INFO ]: Hoare is false [2018-06-22 11:33:21,840 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:33:21,840 INFO ]: Backedges is TWOTRACK [2018-06-22 11:33:21,840 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:33:21,840 INFO ]: Difference is false [2018-06-22 11:33:21,840 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:33:21,841 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:33:21,860 INFO ]: Start isEmpty. Operand 24 states. [2018-06-22 11:33:21,880 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:33:21,881 INFO ]: Found error trace [2018-06-22 11:33:21,881 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:33:21,882 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:33:21,887 INFO ]: Analyzing trace with hash 97983986, now seen corresponding path program 1 times [2018-06-22 11:33:21,889 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:33:21,890 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:33:21,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:33:21,923 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:33:21,923 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:33:21,937 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:33:21,958 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:33:21,960 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:33:21,960 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:33:21,962 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:33:21,973 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:33:21,973 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:33:21,975 INFO ]: Start difference. First operand 24 states. Second operand 2 states. [2018-06-22 11:33:22,001 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:33:22,002 INFO ]: Finished difference Result 22 states and 27 transitions. [2018-06-22 11:33:22,002 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:33:22,003 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:33:22,003 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:33:22,027 INFO ]: With dead ends: 22 [2018-06-22 11:33:22,027 INFO ]: Without dead ends: 22 [2018-06-22 11:33:22,031 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:33:22,050 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-22 11:33:22,070 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-06-22 11:33:22,071 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-22 11:33:22,072 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2018-06-22 11:33:22,073 INFO ]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 5 [2018-06-22 11:33:22,073 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:33:22,073 INFO ]: Abstraction has 22 states and 27 transitions. [2018-06-22 11:33:22,073 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:33:22,073 INFO ]: Start isEmpty. Operand 22 states and 27 transitions. [2018-06-22 11:33:22,075 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:33:22,075 INFO ]: Found error trace [2018-06-22 11:33:22,075 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:33:22,076 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:33:22,076 INFO ]: Analyzing trace with hash -969624818, now seen corresponding path program 1 times [2018-06-22 11:33:22,076 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:33:22,076 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:33:22,077 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:33:22,077 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:33:22,077 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:33:22,101 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:33:22,523 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:33:22,523 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:33:22,523 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 11:33:22,525 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:33:22,525 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:33:22,525 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:33:22,525 INFO ]: Start difference. First operand 22 states and 27 transitions. Second operand 7 states. [2018-06-22 11:33:22,894 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:33:22,894 INFO ]: Finished difference Result 28 states and 38 transitions. [2018-06-22 11:33:22,895 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:33:22,895 INFO ]: Start accepts. Automaton has 7 states. Word has length 17 [2018-06-22 11:33:22,895 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:33:22,896 INFO ]: With dead ends: 28 [2018-06-22 11:33:22,896 INFO ]: Without dead ends: 28 [2018-06-22 11:33:22,897 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:33:22,897 INFO ]: Start minimizeSevpa. Operand 28 states. [2018-06-22 11:33:22,911 INFO ]: Finished minimizeSevpa. Reduced states from 28 to 26. [2018-06-22 11:33:22,911 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-22 11:33:22,914 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2018-06-22 11:33:22,914 INFO ]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 17 [2018-06-22 11:33:22,915 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:33:22,915 INFO ]: Abstraction has 26 states and 34 transitions. [2018-06-22 11:33:22,915 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:33:22,915 INFO ]: Start isEmpty. Operand 26 states and 34 transitions. [2018-06-22 11:33:22,916 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:33:22,916 INFO ]: Found error trace [2018-06-22 11:33:22,916 INFO ]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:33:22,916 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:33:22,916 INFO ]: Analyzing trace with hash 773318931, now seen corresponding path program 1 times [2018-06-22 11:33:22,916 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:33:22,916 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:33:22,919 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:33:22,919 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:33:22,919 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:33:22,937 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:33:23,073 INFO ]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:33:23,074 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:33:23,074 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:33:23,080 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:33:23,100 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:33:23,107 INFO ]: Computing forward predicates... [2018-06-22 11:33:23,168 INFO ]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:33:23,192 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:33:23,192 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-06-22 11:33:23,193 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:33:23,193 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:33:23,193 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:33:23,193 INFO ]: Start difference. First operand 26 states and 34 transitions. Second operand 9 states. [2018-06-22 11:33:23,582 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:33:23,582 INFO ]: Finished difference Result 31 states and 44 transitions. [2018-06-22 11:33:23,583 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:33:23,583 INFO ]: Start accepts. Automaton has 9 states. Word has length 29 [2018-06-22 11:33:23,583 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:33:23,584 INFO ]: With dead ends: 31 [2018-06-22 11:33:23,584 INFO ]: Without dead ends: 31 [2018-06-22 11:33:23,585 INFO ]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:33:23,585 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 11:33:23,591 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-06-22 11:33:23,591 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 11:33:23,592 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2018-06-22 11:33:23,592 INFO ]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 29 [2018-06-22 11:33:23,592 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:33:23,592 INFO ]: Abstraction has 27 states and 37 transitions. [2018-06-22 11:33:23,592 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:33:23,592 INFO ]: Start isEmpty. Operand 27 states and 37 transitions. [2018-06-22 11:33:23,594 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:33:23,594 INFO ]: Found error trace [2018-06-22 11:33:23,594 INFO ]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:33:23,594 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:33:23,594 INFO ]: Analyzing trace with hash -1705332068, now seen corresponding path program 1 times [2018-06-22 11:33:23,594 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:33:23,594 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:33:23,595 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:33:23,595 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:33:23,595 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:33:23,607 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:33:24,095 INFO ]: Checked inductivity of 17 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:33:24,095 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:33:24,095 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:33:24,110 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:33:24,123 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:33:24,126 INFO ]: Computing forward predicates... [2018-06-22 11:33:24,205 INFO ]: Checked inductivity of 17 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:33:24,235 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:33:24,236 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-06-22 11:33:24,236 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:33:24,236 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:33:24,236 INFO ]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:33:24,236 INFO ]: Start difference. First operand 27 states and 37 transitions. Second operand 11 states. [2018-06-22 11:33:24,456 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:33:24,456 INFO ]: Finished difference Result 36 states and 56 transitions. [2018-06-22 11:33:24,456 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:33:24,456 INFO ]: Start accepts. Automaton has 11 states. Word has length 33 [2018-06-22 11:33:24,457 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:33:24,458 INFO ]: With dead ends: 36 [2018-06-22 11:33:24,458 INFO ]: Without dead ends: 36 [2018-06-22 11:33:24,458 INFO ]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:33:24,459 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-22 11:33:24,466 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 34. [2018-06-22 11:33:24,466 INFO ]: Start removeUnreachable. Operand 34 states. [2018-06-22 11:33:24,467 INFO ]: Finished removeUnreachable. Reduced from 34 states to 34 states and 52 transitions. [2018-06-22 11:33:24,467 INFO ]: Start accepts. Automaton has 34 states and 52 transitions. Word has length 33 [2018-06-22 11:33:24,467 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:33:24,467 INFO ]: Abstraction has 34 states and 52 transitions. [2018-06-22 11:33:24,467 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:33:24,467 INFO ]: Start isEmpty. Operand 34 states and 52 transitions. [2018-06-22 11:33:24,470 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:33:24,470 INFO ]: Found error trace [2018-06-22 11:33:24,470 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:33:24,470 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:33:24,470 INFO ]: Analyzing trace with hash 926608929, now seen corresponding path program 1 times [2018-06-22 11:33:24,470 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:33:24,470 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:33:24,471 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:33:24,471 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:33:24,471 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:33:24,490 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:33:24,541 INFO ]: Checked inductivity of 40 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-06-22 11:33:24,541 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:33:24,541 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 11:33:24,556 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:33:24,582 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:33:24,585 INFO ]: Computing forward predicates... [2018-06-22 11:33:24,602 INFO ]: Checked inductivity of 40 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-06-22 11:33:24,621 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:33:24,621 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-06-22 11:33:24,622 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:33:24,622 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:33:24,622 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:33:24,622 INFO ]: Start difference. First operand 34 states and 52 transitions. Second operand 5 states. [2018-06-22 11:33:24,731 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:33:24,731 INFO ]: Finished difference Result 40 states and 58 transitions. [2018-06-22 11:33:24,732 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:33:24,732 INFO ]: Start accepts. Automaton has 5 states. Word has length 45 [2018-06-22 11:33:24,732 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:33:24,734 INFO ]: With dead ends: 40 [2018-06-22 11:33:24,734 INFO ]: Without dead ends: 40 [2018-06-22 11:33:24,734 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:33:24,734 INFO ]: Start minimizeSevpa. Operand 40 states. [2018-06-22 11:33:24,741 INFO ]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-06-22 11:33:24,741 INFO ]: Start removeUnreachable. Operand 40 states. [2018-06-22 11:33:24,742 INFO ]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2018-06-22 11:33:24,743 INFO ]: Start accepts. Automaton has 40 states and 58 transitions. Word has length 45 [2018-06-22 11:33:24,743 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:33:24,743 INFO ]: Abstraction has 40 states and 58 transitions. [2018-06-22 11:33:24,743 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:33:24,743 INFO ]: Start isEmpty. Operand 40 states and 58 transitions. [2018-06-22 11:33:24,744 INFO ]: Finished isEmpty. Found accepting run of length 46 [2018-06-22 11:33:24,744 INFO ]: Found error trace [2018-06-22 11:33:24,744 INFO ]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:33:24,745 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:33:24,745 INFO ]: Analyzing trace with hash 469612833, now seen corresponding path program 2 times [2018-06-22 11:33:24,745 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:33:24,745 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:33:24,746 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:33:24,746 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:33:24,746 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:33:24,761 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:33:24,909 INFO ]: Checked inductivity of 40 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-06-22 11:33:24,909 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:33:24,909 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:33:24,915 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:33:24,951 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:33:24,952 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:33:24,956 INFO ]: Computing forward predicates... [2018-06-22 11:33:25,133 INFO ]: Checked inductivity of 40 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-06-22 11:33:25,152 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:33:25,152 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2018-06-22 11:33:25,153 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:33:25,153 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:33:25,153 INFO ]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:33:25,153 INFO ]: Start difference. First operand 40 states and 58 transitions. Second operand 12 states. [2018-06-22 11:33:25,377 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:33:25,377 INFO ]: Finished difference Result 36 states and 54 transitions. [2018-06-22 11:33:25,379 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:33:25,379 INFO ]: Start accepts. Automaton has 12 states. Word has length 45 [2018-06-22 11:33:25,379 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:33:25,379 INFO ]: With dead ends: 36 [2018-06-22 11:33:25,379 INFO ]: Without dead ends: 0 [2018-06-22 11:33:25,380 INFO ]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:33:25,380 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:33:25,380 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:33:25,380 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:33:25,380 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:33:25,380 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2018-06-22 11:33:25,380 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:33:25,380 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:33:25,380 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:33:25,380 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:33:25,380 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:33:25,386 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:33:25 BoogieIcfgContainer [2018-06-22 11:33:25,386 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:33:25,387 INFO ]: Toolchain (without parser) took 4049.02 ms. Allocated memory was 307.8 MB in the beginning and 338.2 MB in the end (delta: 30.4 MB). Free memory was 264.1 MB in the beginning and 305.4 MB in the end (delta: -41.3 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:33:25,389 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:33:25,389 INFO ]: ChcToBoogie took 50.73 ms. Allocated memory is still 307.8 MB. Free memory was 264.1 MB in the beginning and 262.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:33:25,390 INFO ]: Boogie Preprocessor took 41.52 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 261.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:33:25,390 INFO ]: RCFGBuilder took 310.40 ms. Allocated memory is still 307.8 MB. Free memory was 260.1 MB in the beginning and 252.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:33:25,391 INFO ]: TraceAbstraction took 3630.28 ms. Allocated memory was 307.8 MB in the beginning and 338.2 MB in the end (delta: 30.4 MB). Free memory was 252.0 MB in the beginning and 305.4 MB in the end (delta: -53.4 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:33:25,394 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 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 50.73 ms. Allocated memory is still 307.8 MB. Free memory was 264.1 MB in the beginning and 262.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.52 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 261.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 310.40 ms. Allocated memory is still 307.8 MB. Free memory was 260.1 MB in the beginning and 252.0 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3630.28 ms. Allocated memory was 307.8 MB in the beginning and 338.2 MB in the end (delta: 30.4 MB). Free memory was 252.0 MB in the beginning and 305.4 MB in the end (delta: -53.4 MB). There was no memory consumed. 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 5 procedures, 24 locations, 1 error locations. SAFE Result, 3.5s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 142 SDtfs, 18 SDslu, 541 SDs, 0 SdLazy, 498 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 157 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, 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, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 326 NumberOfCodeBlocks, 326 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 24488 SizeOfPredicates, 22 NumberOfNonLiveVariables, 390 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 164/214 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/hrec.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-33-25-405.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/hrec.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-33-25-405.csv Received shutdown request...