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/neg2.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:35:38,833 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:35:38,835 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:35:38,850 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:35:38,850 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:35:38,852 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:35:38,853 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:35:38,857 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:35:38,859 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:35:38,860 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:35:38,861 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:35:38,862 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:35:38,863 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:35:38,864 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:35:38,865 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:35:38,868 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:35:38,870 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:35:38,882 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:35:38,883 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:35:38,885 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:35:38,888 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:35:38,891 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:35:38,891 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:35:38,891 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:35:38,892 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:35:38,893 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:35:38,894 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:35:38,895 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:35:38,896 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:35:38,896 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:35:38,897 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:35:38,898 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:35:38,898 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:35:38,899 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:35:38,899 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:35:38,900 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 11:35:38,929 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:35:38,929 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:35:38,929 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:35:38,930 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:35:38,931 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:35:38,931 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:35:38,931 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:35:38,931 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:35:38,932 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:35:38,932 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:35:38,932 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:35:38,932 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:35:38,932 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:35:38,933 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:35:38,934 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:35:38,934 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:35:38,934 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:35:38,935 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:35:38,935 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:35:38,936 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:35:38,937 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:35:38,976 INFO ]: Repository-Root is: /tmp [2018-06-22 11:35:38,997 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:35:39,001 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:35:39,002 INFO ]: Initializing SmtParser... [2018-06-22 11:35:39,002 INFO ]: SmtParser initialized [2018-06-22 11:35:39,003 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/neg2.smt2 [2018-06-22 11:35:39,004 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 11:35:39,098 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/neg2.smt2 unknown [2018-06-22 11:35:39,435 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/neg2.smt2 [2018-06-22 11:35:39,458 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:35:39,472 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:35:39,472 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:35:39,472 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:35:39,472 INFO ]: ChcToBoogie initialized [2018-06-22 11:35:39,483 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:35:39" (1/1) ... [2018-06-22 11:35:39,567 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:39 Unit [2018-06-22 11:35:39,567 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:35:39,569 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:35:39,569 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:35:39,569 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:35:39,595 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:39" (1/1) ... [2018-06-22 11:35:39,595 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:39" (1/1) ... [2018-06-22 11:35:39,604 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:39" (1/1) ... [2018-06-22 11:35:39,604 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:39" (1/1) ... [2018-06-22 11:35:39,607 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:39" (1/1) ... [2018-06-22 11:35:39,610 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:39" (1/1) ... [2018-06-22 11:35:39,611 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:39" (1/1) ... [2018-06-22 11:35:39,613 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:35:39,614 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:35:39,614 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:35:39,614 INFO ]: RCFGBuilder initialized [2018-06-22 11:35:39,615 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:39" (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 11:35:39,631 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:35:39,631 INFO ]: Found specification of procedure False [2018-06-22 11:35:39,631 INFO ]: Found implementation of procedure False [2018-06-22 11:35:39,631 INFO ]: Specification and implementation of procedure twiceDLRunknownCLN8 given in one single declaration [2018-06-22 11:35:39,631 INFO ]: Found specification of procedure twiceDLRunknownCLN8 [2018-06-22 11:35:39,631 INFO ]: Found implementation of procedure twiceDLRunknownCLN8 [2018-06-22 11:35:39,631 INFO ]: Specification and implementation of procedure twiceDLRunknownCLN7 given in one single declaration [2018-06-22 11:35:39,631 INFO ]: Found specification of procedure twiceDLRunknownCLN7 [2018-06-22 11:35:39,631 INFO ]: Found implementation of procedure twiceDLRunknownCLN7 [2018-06-22 11:35:39,631 INFO ]: Specification and implementation of procedure negDLRunknownCLN4 given in one single declaration [2018-06-22 11:35:39,631 INFO ]: Found specification of procedure negDLRunknownCLN4 [2018-06-22 11:35:39,631 INFO ]: Found implementation of procedure negDLRunknownCLN4 [2018-06-22 11:35:39,631 INFO ]: Specification and implementation of procedure gDLRunknownCLN2 given in one single declaration [2018-06-22 11:35:39,632 INFO ]: Found specification of procedure gDLRunknownCLN2 [2018-06-22 11:35:39,632 INFO ]: Found implementation of procedure gDLRunknownCLN2 [2018-06-22 11:35:39,632 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:35:39,632 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:35:39,632 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 11:35:39,951 INFO ]: Using library mode [2018-06-22 11:35:39,951 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:35:39 BoogieIcfgContainer [2018-06-22 11:35:39,951 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:35:39,952 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:35:39,952 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:35:39,956 INFO ]: TraceAbstraction initialized [2018-06-22 11:35:39,956 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:35:39" (1/3) ... [2018-06-22 11:35:39,957 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5999ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:35:39, skipping insertion in model container [2018-06-22 11:35:39,957 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:35:39" (2/3) ... [2018-06-22 11:35:39,957 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5999ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:35:39, skipping insertion in model container [2018-06-22 11:35:39,957 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:35:39" (3/3) ... [2018-06-22 11:35:39,960 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:35:39,971 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:35:39,980 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:35:40,031 INFO ]: Using default assertion order modulation [2018-06-22 11:35:40,031 INFO ]: Interprodecural is true [2018-06-22 11:35:40,032 INFO ]: Hoare is false [2018-06-22 11:35:40,032 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:35:40,032 INFO ]: Backedges is TWOTRACK [2018-06-22 11:35:40,032 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:35:40,032 INFO ]: Difference is false [2018-06-22 11:35:40,032 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:35:40,032 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:35:40,056 INFO ]: Start isEmpty. Operand 28 states. [2018-06-22 11:35:40,076 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:35:40,077 INFO ]: Found error trace [2018-06-22 11:35:40,077 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:35:40,078 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:40,084 INFO ]: Analyzing trace with hash 80422073, now seen corresponding path program 1 times [2018-06-22 11:35:40,086 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:40,086 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:40,136 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:40,136 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:40,136 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:40,153 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:40,174 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:35:40,176 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:35:40,176 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:35:40,177 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:35:40,188 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:35:40,188 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:35:40,190 INFO ]: Start difference. First operand 28 states. Second operand 2 states. [2018-06-22 11:35:40,215 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:40,215 INFO ]: Finished difference Result 26 states and 30 transitions. [2018-06-22 11:35:40,215 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:35:40,217 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:35:40,217 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:40,236 INFO ]: With dead ends: 26 [2018-06-22 11:35:40,236 INFO ]: Without dead ends: 26 [2018-06-22 11:35:40,238 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 11:35:40,261 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 11:35:40,292 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-06-22 11:35:40,303 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-22 11:35:40,304 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-06-22 11:35:40,305 INFO ]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 5 [2018-06-22 11:35:40,306 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:40,306 INFO ]: Abstraction has 26 states and 30 transitions. [2018-06-22 11:35:40,306 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:35:40,306 INFO ]: Start isEmpty. Operand 26 states and 30 transitions. [2018-06-22 11:35:40,308 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:35:40,308 INFO ]: Found error trace [2018-06-22 11:35:40,308 INFO ]: trace histogram [3, 3, 2, 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 11:35:40,308 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:40,309 INFO ]: Analyzing trace with hash -1383805299, now seen corresponding path program 1 times [2018-06-22 11:35:40,309 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:40,309 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:40,310 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:40,310 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:40,310 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:40,367 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:40,869 INFO ]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 11:35:40,870 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:40,870 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 11:35:40,910 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 11:35:40,973 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:40,987 INFO ]: Computing forward predicates... [2018-06-22 11:35:41,579 INFO ]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 11:35:41,609 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:41,609 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2018-06-22 11:35:41,610 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:35:41,610 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:35:41,611 INFO ]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:35:41,611 INFO ]: Start difference. First operand 26 states and 30 transitions. Second operand 17 states. [2018-06-22 11:35:42,590 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:42,590 INFO ]: Finished difference Result 26 states and 29 transitions. [2018-06-22 11:35:42,590 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:35:42,591 INFO ]: Start accepts. Automaton has 17 states. Word has length 37 [2018-06-22 11:35:42,591 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:42,592 INFO ]: With dead ends: 26 [2018-06-22 11:35:42,592 INFO ]: Without dead ends: 24 [2018-06-22 11:35:42,593 INFO ]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:35:42,593 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-22 11:35:42,597 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-06-22 11:35:42,597 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 11:35:42,598 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-06-22 11:35:42,598 INFO ]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 37 [2018-06-22 11:35:42,598 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:42,598 INFO ]: Abstraction has 24 states and 25 transitions. [2018-06-22 11:35:42,598 INFO ]: Interpolant automaton has 17 states. [2018-06-22 11:35:42,598 INFO ]: Start isEmpty. Operand 24 states and 25 transitions. [2018-06-22 11:35:42,599 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 11:35:42,599 INFO ]: Found error trace [2018-06-22 11:35:42,599 INFO ]: trace histogram [3, 3, 2, 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 11:35:42,599 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:35:42,600 INFO ]: Analyzing trace with hash -373311941, now seen corresponding path program 1 times [2018-06-22 11:35:42,600 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:35:42,600 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:35:42,601 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:42,601 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:42,601 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:35:42,627 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:43,063 INFO ]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 11:35:43,063 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:35:43,063 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 11:35:43,086 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:35:43,125 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:35:43,129 INFO ]: Computing forward predicates... [2018-06-22 11:35:43,549 INFO ]: Checked inductivity of 17 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 11:35:43,581 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:35:43,581 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2018-06-22 11:35:43,581 INFO ]: Interpolant automaton has 17 states [2018-06-22 11:35:43,581 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 11:35:43,581 INFO ]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:35:43,582 INFO ]: Start difference. First operand 24 states and 25 transitions. Second operand 17 states. [2018-06-22 11:35:43,800 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:35:43,800 INFO ]: Finished difference Result 20 states and 21 transitions. [2018-06-22 11:35:43,800 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:35:43,800 INFO ]: Start accepts. Automaton has 17 states. Word has length 37 [2018-06-22 11:35:43,801 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:35:43,801 INFO ]: With dead ends: 20 [2018-06-22 11:35:43,801 INFO ]: Without dead ends: 0 [2018-06-22 11:35:43,802 INFO ]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:35:43,802 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:35:43,802 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:35:43,802 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:35:43,802 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:35:43,802 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2018-06-22 11:35:43,802 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:35:43,802 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:35:43,802 INFO ]: Interpolant automaton has 17 states. [2018-06-22 11:35:43,802 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:35:43,802 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:35:43,807 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:35:43 BoogieIcfgContainer [2018-06-22 11:35:43,807 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:35:43,807 INFO ]: Toolchain (without parser) took 4349.02 ms. Allocated memory was 316.7 MB in the beginning and 328.2 MB in the end (delta: 11.5 MB). Free memory was 271.0 MB in the beginning and 223.9 MB in the end (delta: 47.2 MB). Peak memory consumption was 58.7 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:43,809 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 316.7 MB. Free memory is still 279.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:35:43,809 INFO ]: ChcToBoogie took 96.05 ms. Allocated memory is still 316.7 MB. Free memory was 271.0 MB in the beginning and 269.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:43,810 INFO ]: Boogie Preprocessor took 44.88 ms. Allocated memory is still 316.7 MB. Free memory was 269.1 MB in the beginning and 267.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:43,810 INFO ]: RCFGBuilder took 337.26 ms. Allocated memory is still 316.7 MB. Free memory was 267.1 MB in the beginning and 259.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:43,811 INFO ]: TraceAbstraction took 3854.38 ms. Allocated memory was 316.7 MB in the beginning and 328.2 MB in the end (delta: 11.5 MB). Free memory was 259.1 MB in the beginning and 223.9 MB in the end (delta: 35.2 MB). Peak memory consumption was 46.8 MB. Max. memory is 3.6 GB. [2018-06-22 11:35:43,814 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 316.7 MB. Free memory is still 279.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 96.05 ms. Allocated memory is still 316.7 MB. Free memory was 271.0 MB in the beginning and 269.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 44.88 ms. Allocated memory is still 316.7 MB. Free memory was 269.1 MB in the beginning and 267.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 337.26 ms. Allocated memory is still 316.7 MB. Free memory was 267.1 MB in the beginning and 259.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3854.38 ms. Allocated memory was 316.7 MB in the beginning and 328.2 MB in the end (delta: 11.5 MB). Free memory was 259.1 MB in the beginning and 223.9 MB in the end (delta: 35.2 MB). Peak memory consumption was 46.8 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 6 procedures, 28 locations, 1 error locations. SAFE Result, 3.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 68 SDtfs, 4 SDslu, 393 SDs, 0 SdLazy, 176 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 153 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 148 ConstructedInterpolants, 2 QuantifiedInterpolants, 14848 SizeOfPredicates, 14 NumberOfNonLiveVariables, 191 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 36/68 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/neg2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-35-43-827.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/neg2.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-35-43-827.csv Received shutdown request...