java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/hopv/lia/fpice/inductive4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:25:24,834 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:25:24,836 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:25:24,849 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:25:24,850 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:25:24,850 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:25:24,851 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:25:24,853 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:25:24,855 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:25:24,855 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:25:24,857 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:25:24,857 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:25:24,858 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:25:24,859 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:25:24,860 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:25:24,862 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:25:24,863 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:25:24,873 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:25:24,874 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:25:24,875 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:25:24,876 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:25:24,878 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:25:24,881 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:25:24,881 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:25:24,882 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:25:24,883 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:25:24,883 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:25:24,884 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:25:24,887 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:25:24,888 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:25:24,888 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:25:24,889 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:25:24,889 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:25:24,890 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:25:24,890 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:25:24,891 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:25:24,908 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:25:24,908 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:25:24,908 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:25:24,908 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:25:24,909 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:25:24,909 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:25:24,910 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:25:24,911 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:25:24,911 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:25:24,911 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:25:24,911 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:25:24,911 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:25:24,911 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:25:24,912 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:25:24,912 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:25:24,912 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:25:24,912 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:25:24,912 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:25:24,912 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:25:24,914 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:25:24,915 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:25:24,958 INFO ]: Repository-Root is: /tmp [2018-06-22 11:25:24,973 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:25:24,976 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:25:24,977 INFO ]: Initializing SmtParser... [2018-06-22 11:25:24,978 INFO ]: SmtParser initialized [2018-06-22 11:25:24,978 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/fpice/inductive4.smt2 [2018-06-22 11:25:24,980 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 11:25:25,055 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/fpice/inductive4.smt2 unknown [2018-06-22 11:25:25,200 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/fpice/inductive4.smt2 [2018-06-22 11:25:25,204 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:25:25,209 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:25:25,210 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:25:25,210 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:25:25,210 INFO ]: ChcToBoogie initialized [2018-06-22 11:25:25,214 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:25:25" (1/1) ... [2018-06-22 11:25:25,259 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:25 Unit [2018-06-22 11:25:25,259 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:25:25,260 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:25:25,260 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:25:25,261 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:25:25,285 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:25" (1/1) ... [2018-06-22 11:25:25,286 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:25" (1/1) ... [2018-06-22 11:25:25,293 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:25" (1/1) ... [2018-06-22 11:25:25,293 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:25" (1/1) ... [2018-06-22 11:25:25,296 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:25" (1/1) ... [2018-06-22 11:25:25,299 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:25" (1/1) ... [2018-06-22 11:25:25,300 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:25" (1/1) ... [2018-06-22 11:25:25,302 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:25:25,304 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:25:25,304 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:25:25,304 INFO ]: RCFGBuilder initialized [2018-06-22 11:25:25,305 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:25" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 11:25:25,322 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:25:25,322 INFO ]: Found specification of procedure False [2018-06-22 11:25:25,322 INFO ]: Found implementation of procedure False [2018-06-22 11:25:25,323 INFO ]: Specification and implementation of procedure fDLRunknownCLN4 given in one single declaration [2018-06-22 11:25:25,323 INFO ]: Found specification of procedure fDLRunknownCLN4 [2018-06-22 11:25:25,323 INFO ]: Found implementation of procedure fDLRunknownCLN4 [2018-06-22 11:25:25,323 INFO ]: Specification and implementation of procedure fDLRunknownCLN2 given in one single declaration [2018-06-22 11:25:25,323 INFO ]: Found specification of procedure fDLRunknownCLN2 [2018-06-22 11:25:25,323 INFO ]: Found implementation of procedure fDLRunknownCLN2 [2018-06-22 11:25:25,323 INFO ]: Specification and implementation of procedure incrDLRunknownCLN6 given in one single declaration [2018-06-22 11:25:25,323 INFO ]: Found specification of procedure incrDLRunknownCLN6 [2018-06-22 11:25:25,323 INFO ]: Found implementation of procedure incrDLRunknownCLN6 [2018-06-22 11:25:25,323 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:25:25,323 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:25:25,323 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:25:25,640 INFO ]: Using library mode [2018-06-22 11:25:25,641 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:25:25 BoogieIcfgContainer [2018-06-22 11:25:25,641 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:25:25,642 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:25:25,642 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:25:25,645 INFO ]: TraceAbstraction initialized [2018-06-22 11:25:25,645 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:25:25" (1/3) ... [2018-06-22 11:25:25,646 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37077be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:25:25, skipping insertion in model container [2018-06-22 11:25:25,646 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:25:25" (2/3) ... [2018-06-22 11:25:25,646 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37077be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:25:25, skipping insertion in model container [2018-06-22 11:25:25,646 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:25:25" (3/3) ... [2018-06-22 11:25:25,648 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:25:25,660 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:25:25,671 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:25:25,703 INFO ]: Using default assertion order modulation [2018-06-22 11:25:25,703 INFO ]: Interprodecural is true [2018-06-22 11:25:25,703 INFO ]: Hoare is false [2018-06-22 11:25:25,703 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:25:25,703 INFO ]: Backedges is TWOTRACK [2018-06-22 11:25:25,703 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:25:25,703 INFO ]: Difference is false [2018-06-22 11:25:25,703 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:25:25,703 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:25:25,716 INFO ]: Start isEmpty. Operand 23 states. [2018-06-22 11:25:25,727 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:25:25,727 INFO ]: Found error trace [2018-06-22 11:25:25,728 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:25:25,728 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:25,733 INFO ]: Analyzing trace with hash 106364186, now seen corresponding path program 1 times [2018-06-22 11:25:25,735 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:25,736 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:25,770 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:25,770 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:25,770 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:25,782 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:25,804 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:25:25,806 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:25:25,806 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:25:25,808 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:25:25,820 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:25:25,820 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:25:25,822 INFO ]: Start difference. First operand 23 states. Second operand 2 states. [2018-06-22 11:25:25,839 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:25,839 INFO ]: Finished difference Result 21 states and 26 transitions. [2018-06-22 11:25:25,839 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:25:25,841 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:25:25,841 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:25,852 INFO ]: With dead ends: 21 [2018-06-22 11:25:25,852 INFO ]: Without dead ends: 21 [2018-06-22 11:25:25,854 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:25:25,872 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 11:25:25,896 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 11:25:25,897 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 11:25:25,898 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 26 transitions. [2018-06-22 11:25:25,900 INFO ]: Start accepts. Automaton has 21 states and 26 transitions. Word has length 5 [2018-06-22 11:25:25,900 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:25,900 INFO ]: Abstraction has 21 states and 26 transitions. [2018-06-22 11:25:25,900 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:25:25,900 INFO ]: Start isEmpty. Operand 21 states and 26 transitions. [2018-06-22 11:25:25,901 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:25:25,901 INFO ]: Found error trace [2018-06-22 11:25:25,901 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:25:25,902 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:25,902 INFO ]: Analyzing trace with hash 2025185646, now seen corresponding path program 1 times [2018-06-22 11:25:25,902 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:25,902 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:25,902 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:25,902 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:25,902 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:25,926 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:25,990 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:25:25,990 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:25:25,991 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:25:25,992 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:25:25,992 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:25:25,992 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:25:25,993 INFO ]: Start difference. First operand 21 states and 26 transitions. Second operand 4 states. [2018-06-22 11:25:26,090 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:26,090 INFO ]: Finished difference Result 23 states and 30 transitions. [2018-06-22 11:25:26,091 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:25:26,091 INFO ]: Start accepts. Automaton has 4 states. Word has length 17 [2018-06-22 11:25:26,092 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:26,093 INFO ]: With dead ends: 23 [2018-06-22 11:25:26,093 INFO ]: Without dead ends: 23 [2018-06-22 11:25:26,094 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:25:26,094 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 11:25:26,101 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 11:25:26,101 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 11:25:26,102 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2018-06-22 11:25:26,102 INFO ]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 17 [2018-06-22 11:25:26,102 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:26,102 INFO ]: Abstraction has 23 states and 30 transitions. [2018-06-22 11:25:26,102 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:25:26,102 INFO ]: Start isEmpty. Operand 23 states and 30 transitions. [2018-06-22 11:25:26,103 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:25:26,103 INFO ]: Found error trace [2018-06-22 11:25:26,103 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:25:26,103 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:26,104 INFO ]: Analyzing trace with hash -2097304080, now seen corresponding path program 1 times [2018-06-22 11:25:26,104 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:26,104 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:26,104 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:26,104 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:26,104 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:26,118 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:26,322 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:25:26,322 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:25:26,322 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) [2018-06-22 11:25:26,340 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:25:26,375 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:26,384 INFO ]: Computing forward predicates... [2018-06-22 11:25:26,688 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:25:26,707 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:25:26,707 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-06-22 11:25:26,707 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:25:26,708 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:25:26,708 INFO ]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:25:26,708 INFO ]: Start difference. First operand 23 states and 30 transitions. Second operand 11 states. [2018-06-22 11:25:26,989 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:26,989 INFO ]: Finished difference Result 31 states and 44 transitions. [2018-06-22 11:25:26,990 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:25:26,990 INFO ]: Start accepts. Automaton has 11 states. Word has length 21 [2018-06-22 11:25:26,991 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:26,992 INFO ]: With dead ends: 31 [2018-06-22 11:25:26,992 INFO ]: Without dead ends: 31 [2018-06-22 11:25:26,992 INFO ]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-06-22 11:25:26,992 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 11:25:26,999 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 27. [2018-06-22 11:25:26,999 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 11:25:27,000 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2018-06-22 11:25:27,000 INFO ]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 21 [2018-06-22 11:25:27,001 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:27,001 INFO ]: Abstraction has 27 states and 36 transitions. [2018-06-22 11:25:27,001 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:25:27,001 INFO ]: Start isEmpty. Operand 27 states and 36 transitions. [2018-06-22 11:25:27,002 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:25:27,002 INFO ]: Found error trace [2018-06-22 11:25:27,002 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:25:27,002 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:27,002 INFO ]: Analyzing trace with hash 685869077, now seen corresponding path program 1 times [2018-06-22 11:25:27,002 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:27,002 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:27,003 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:27,003 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:27,003 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:27,014 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:27,078 INFO ]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:25:27,078 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:25:27,078 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:25:27,078 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:25:27,078 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:25:27,078 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:25:27,079 INFO ]: Start difference. First operand 27 states and 36 transitions. Second operand 4 states. [2018-06-22 11:25:27,157 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:27,157 INFO ]: Finished difference Result 27 states and 33 transitions. [2018-06-22 11:25:27,158 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:25:27,158 INFO ]: Start accepts. Automaton has 4 states. Word has length 25 [2018-06-22 11:25:27,158 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:27,159 INFO ]: With dead ends: 27 [2018-06-22 11:25:27,159 INFO ]: Without dead ends: 26 [2018-06-22 11:25:27,159 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:25:27,159 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 11:25:27,163 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-06-22 11:25:27,163 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-22 11:25:27,164 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2018-06-22 11:25:27,164 INFO ]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 25 [2018-06-22 11:25:27,164 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:27,164 INFO ]: Abstraction has 26 states and 31 transitions. [2018-06-22 11:25:27,164 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:25:27,164 INFO ]: Start isEmpty. Operand 26 states and 31 transitions. [2018-06-22 11:25:27,165 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:25:27,165 INFO ]: Found error trace [2018-06-22 11:25:27,165 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:25:27,165 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:27,165 INFO ]: Analyzing trace with hash 1256073330, now seen corresponding path program 2 times [2018-06-22 11:25:27,165 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:27,165 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:27,168 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:27,168 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:27,168 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:27,181 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:27,231 INFO ]: Checked inductivity of 10 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:25:27,231 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:25:27,231 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 11:25:27,237 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:25:27,253 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:25:27,253 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:27,256 INFO ]: Computing forward predicates... [2018-06-22 11:25:27,692 INFO ]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:25:27,718 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:25:27,719 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-06-22 11:25:27,719 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:25:27,719 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:25:27,719 INFO ]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:25:27,719 INFO ]: Start difference. First operand 26 states and 31 transitions. Second operand 12 states. [2018-06-22 11:25:28,178 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:28,178 INFO ]: Finished difference Result 38 states and 48 transitions. [2018-06-22 11:25:28,179 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:25:28,179 INFO ]: Start accepts. Automaton has 12 states. Word has length 25 [2018-06-22 11:25:28,179 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:28,180 INFO ]: With dead ends: 38 [2018-06-22 11:25:28,180 INFO ]: Without dead ends: 38 [2018-06-22 11:25:28,181 INFO ]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:25:28,181 INFO ]: Start minimizeSevpa. Operand 38 states. [2018-06-22 11:25:28,186 INFO ]: Finished minimizeSevpa. Reduced states from 38 to 28. [2018-06-22 11:25:28,186 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-22 11:25:28,187 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2018-06-22 11:25:28,187 INFO ]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 25 [2018-06-22 11:25:28,187 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:28,188 INFO ]: Abstraction has 28 states and 34 transitions. [2018-06-22 11:25:28,188 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:25:28,188 INFO ]: Start isEmpty. Operand 28 states and 34 transitions. [2018-06-22 11:25:28,189 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 11:25:28,189 INFO ]: Found error trace [2018-06-22 11:25:28,189 INFO ]: trace histogram [4, 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 11:25:28,189 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:25:28,189 INFO ]: Analyzing trace with hash -1083194978, now seen corresponding path program 1 times [2018-06-22 11:25:28,189 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:25:28,189 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:25:28,190 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:28,190 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:25:28,190 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:25:28,228 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:28,277 INFO ]: Checked inductivity of 23 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 11:25:28,277 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:25:28,277 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:25:28,285 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:25:28,316 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:25:28,320 INFO ]: Computing forward predicates... [2018-06-22 11:25:28,550 INFO ]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:25:28,569 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:25:28,569 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11] total 14 [2018-06-22 11:25:28,570 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:25:28,570 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:25:28,570 INFO ]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:25:28,570 INFO ]: Start difference. First operand 28 states and 34 transitions. Second operand 14 states. [2018-06-22 11:25:28,780 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:25:28,780 INFO ]: Finished difference Result 27 states and 31 transitions. [2018-06-22 11:25:28,780 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:25:28,780 INFO ]: Start accepts. Automaton has 14 states. Word has length 33 [2018-06-22 11:25:28,780 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:25:28,780 INFO ]: With dead ends: 27 [2018-06-22 11:25:28,780 INFO ]: Without dead ends: 0 [2018-06-22 11:25:28,780 INFO ]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:25:28,781 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:25:28,781 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:25:28,781 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:25:28,781 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:25:28,781 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-06-22 11:25:28,781 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:25:28,781 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:25:28,781 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:25:28,781 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:25:28,781 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:25:28,786 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:25:28 BoogieIcfgContainer [2018-06-22 11:25:28,786 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:25:28,787 INFO ]: Toolchain (without parser) took 3582.44 ms. Allocated memory was 306.7 MB in the beginning and 325.6 MB in the end (delta: 18.9 MB). Free memory was 262.1 MB in the beginning and 179.3 MB in the end (delta: 82.9 MB). Peak memory consumption was 101.7 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:28,789 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:25:28,789 INFO ]: ChcToBoogie took 49.39 ms. Allocated memory is still 306.7 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:28,790 INFO ]: Boogie Preprocessor took 42.04 ms. Allocated memory is still 306.7 MB. Free memory was 260.1 MB in the beginning and 259.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:25:28,790 INFO ]: RCFGBuilder took 336.84 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 250.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:28,791 INFO ]: TraceAbstraction took 3144.34 ms. Allocated memory was 306.7 MB in the beginning and 325.6 MB in the end (delta: 18.9 MB). Free memory was 250.1 MB in the beginning and 179.3 MB in the end (delta: 70.9 MB). Peak memory consumption was 89.7 MB. Max. memory is 3.6 GB. [2018-06-22 11:25:28,794 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 49.39 ms. Allocated memory is still 306.7 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 42.04 ms. Allocated memory is still 306.7 MB. Free memory was 260.1 MB in the beginning and 259.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 336.84 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 250.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3144.34 ms. Allocated memory was 306.7 MB in the beginning and 325.6 MB in the end (delta: 18.9 MB). Free memory was 250.1 MB in the beginning and 179.3 MB in the end (delta: 70.9 MB). Peak memory consumption was 89.7 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 5 procedures, 23 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 128 SDtfs, 26 SDslu, 427 SDs, 0 SdLazy, 305 SolverSat, 54 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 196 ConstructedInterpolants, 0 QuantifiedInterpolants, 12060 SizeOfPredicates, 22 NumberOfNonLiveVariables, 265 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 63/81 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/inductive4.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-25-28-805.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inductive4.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-25-28-805.csv Received shutdown request...