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/eldarica-misc/LIA/reve/024-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:21:29,815 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:21:29,819 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:21:29,831 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:21:29,832 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:21:29,833 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:21:29,834 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:21:29,835 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:21:29,836 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:21:29,837 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:21:29,837 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:21:29,838 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:21:29,839 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:21:29,840 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:21:29,840 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:21:29,841 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:21:29,845 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:21:29,847 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:21:29,849 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:21:29,850 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:21:29,852 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:21:29,854 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:21:29,854 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:21:29,855 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:21:29,856 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:21:29,856 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:21:29,857 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:21:29,858 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:21:29,859 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:21:29,859 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:21:29,860 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:21:29,861 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:21:29,861 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:21:29,862 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:21:29,863 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:21:29,863 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 11:21:29,882 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:21:29,883 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:21:29,883 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:21:29,883 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:21:29,884 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:21:29,884 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:21:29,884 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:21:29,885 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:21:29,885 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:21:29,885 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:21:29,885 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:21:29,885 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:21:29,886 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:21:29,886 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:21:29,886 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:21:29,886 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:21:29,886 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:21:29,886 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:21:29,887 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:21:29,888 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:21:29,888 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:21:29,927 INFO ]: Repository-Root is: /tmp [2018-06-22 11:21:29,944 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:21:29,948 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:21:29,949 INFO ]: Initializing SmtParser... [2018-06-22 11:21:29,949 INFO ]: SmtParser initialized [2018-06-22 11:21:29,950 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/024-horn.smt2 [2018-06-22 11:21:29,951 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 11:21:30,050 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/024-horn.smt2 unknown [2018-06-22 11:21:30,247 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/024-horn.smt2 [2018-06-22 11:21:30,257 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:21:30,265 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:21:30,265 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:21:30,265 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:21:30,266 INFO ]: ChcToBoogie initialized [2018-06-22 11:21:30,269 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:21:30" (1/1) ... [2018-06-22 11:21:30,315 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:30 Unit [2018-06-22 11:21:30,315 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:21:30,316 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:21:30,316 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:21:30,316 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:21:30,339 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:30" (1/1) ... [2018-06-22 11:21:30,340 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:30" (1/1) ... [2018-06-22 11:21:30,347 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:30" (1/1) ... [2018-06-22 11:21:30,347 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:30" (1/1) ... [2018-06-22 11:21:30,351 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:30" (1/1) ... [2018-06-22 11:21:30,353 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:30" (1/1) ... [2018-06-22 11:21:30,354 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:30" (1/1) ... [2018-06-22 11:21:30,357 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:21:30,357 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:21:30,357 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:21:30,357 INFO ]: RCFGBuilder initialized [2018-06-22 11:21:30,358 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:30" (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 11:21:30,373 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:21:30,373 INFO ]: Found specification of procedure False [2018-06-22 11:21:30,373 INFO ]: Found implementation of procedure False [2018-06-22 11:21:30,373 INFO ]: Specification and implementation of procedure REC_g_g given in one single declaration [2018-06-22 11:21:30,373 INFO ]: Found specification of procedure REC_g_g [2018-06-22 11:21:30,373 INFO ]: Found implementation of procedure REC_g_g [2018-06-22 11:21:30,373 INFO ]: Specification and implementation of procedure REC__g given in one single declaration [2018-06-22 11:21:30,373 INFO ]: Found specification of procedure REC__g [2018-06-22 11:21:30,373 INFO ]: Found implementation of procedure REC__g [2018-06-22 11:21:30,373 INFO ]: Specification and implementation of procedure REC_g_ given in one single declaration [2018-06-22 11:21:30,373 INFO ]: Found specification of procedure REC_g_ [2018-06-22 11:21:30,373 INFO ]: Found implementation of procedure REC_g_ [2018-06-22 11:21:30,373 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:21:30,373 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:21:30,373 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 11:21:30,673 INFO ]: Using library mode [2018-06-22 11:21:30,674 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:21:30 BoogieIcfgContainer [2018-06-22 11:21:30,674 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:21:30,676 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:21:30,676 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:21:30,679 INFO ]: TraceAbstraction initialized [2018-06-22 11:21:30,679 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:21:30" (1/3) ... [2018-06-22 11:21:30,681 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c22d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:21:30, skipping insertion in model container [2018-06-22 11:21:30,681 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:21:30" (2/3) ... [2018-06-22 11:21:30,682 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c22d75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:21:30, skipping insertion in model container [2018-06-22 11:21:30,682 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:21:30" (3/3) ... [2018-06-22 11:21:30,683 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:21:30,693 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:21:30,703 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:21:30,749 INFO ]: Using default assertion order modulation [2018-06-22 11:21:30,749 INFO ]: Interprodecural is true [2018-06-22 11:21:30,749 INFO ]: Hoare is false [2018-06-22 11:21:30,749 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:21:30,749 INFO ]: Backedges is TWOTRACK [2018-06-22 11:21:30,749 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:21:30,749 INFO ]: Difference is false [2018-06-22 11:21:30,749 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:21:30,749 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:21:30,769 INFO ]: Start isEmpty. Operand 23 states. [2018-06-22 11:21:30,781 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:21:30,781 INFO ]: Found error trace [2018-06-22 11:21:30,782 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:30,782 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:30,787 INFO ]: Analyzing trace with hash 1338365559, now seen corresponding path program 1 times [2018-06-22 11:21:30,789 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:30,789 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:30,827 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:30,827 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:30,827 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:30,868 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:31,101 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2018-06-22 11:21:31,105 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:21:31,107 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:21:31,107 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:21:31,109 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:21:31,119 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:21:31,119 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:31,121 INFO ]: Start difference. First operand 23 states. Second operand 4 states. [2018-06-22 11:21:31,222 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:31,222 INFO ]: Finished difference Result 23 states and 30 transitions. [2018-06-22 11:21:31,224 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:21:31,225 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:21:31,225 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:31,238 INFO ]: With dead ends: 23 [2018-06-22 11:21:31,238 INFO ]: Without dead ends: 23 [2018-06-22 11:21:31,241 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:31,261 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 11:21:31,301 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 11:21:31,304 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 11:21:31,305 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2018-06-22 11:21:31,306 INFO ]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 9 [2018-06-22 11:21:31,308 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:31,308 INFO ]: Abstraction has 23 states and 30 transitions. [2018-06-22 11:21:31,308 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:21:31,308 INFO ]: Start isEmpty. Operand 23 states and 30 transitions. [2018-06-22 11:21:31,310 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:21:31,310 INFO ]: Found error trace [2018-06-22 11:21:31,310 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:31,310 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:31,310 INFO ]: Analyzing trace with hash -1906577342, now seen corresponding path program 1 times [2018-06-22 11:21:31,310 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:31,310 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:31,312 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:31,312 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:31,312 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:31,325 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:31,521 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:21:31,521 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:21:31,521 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:21:31,522 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:21:31,522 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:21:31,522 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:31,523 INFO ]: Start difference. First operand 23 states and 30 transitions. Second operand 4 states. [2018-06-22 11:21:31,606 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:31,607 INFO ]: Finished difference Result 25 states and 32 transitions. [2018-06-22 11:21:31,607 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:21:31,607 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 11:21:31,607 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:31,608 INFO ]: With dead ends: 25 [2018-06-22 11:21:31,608 INFO ]: Without dead ends: 25 [2018-06-22 11:21:31,609 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:21:31,609 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 11:21:31,614 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 23. [2018-06-22 11:21:31,614 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 11:21:31,615 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2018-06-22 11:21:31,615 INFO ]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 13 [2018-06-22 11:21:31,615 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:31,615 INFO ]: Abstraction has 23 states and 30 transitions. [2018-06-22 11:21:31,615 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:21:31,615 INFO ]: Start isEmpty. Operand 23 states and 30 transitions. [2018-06-22 11:21:31,616 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:21:31,616 INFO ]: Found error trace [2018-06-22 11:21:31,616 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:31,616 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:31,616 INFO ]: Analyzing trace with hash 409670816, now seen corresponding path program 1 times [2018-06-22 11:21:31,616 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:31,616 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:31,617 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:31,617 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:31,617 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:31,631 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:31,848 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:21:31,848 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:31,848 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 11:21:31,855 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:31,884 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:31,892 INFO ]: Computing forward predicates... [2018-06-22 11:21:32,342 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:21:32,365 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:32,366 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 11:21:32,366 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:21:32,366 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:21:32,366 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:21:32,366 INFO ]: Start difference. First operand 23 states and 30 transitions. Second operand 8 states. [2018-06-22 11:21:32,552 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:32,552 INFO ]: Finished difference Result 27 states and 34 transitions. [2018-06-22 11:21:32,556 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:21:32,556 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 11:21:32,556 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:32,557 INFO ]: With dead ends: 27 [2018-06-22 11:21:32,557 INFO ]: Without dead ends: 27 [2018-06-22 11:21:32,557 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:21:32,558 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 11:21:32,584 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 25. [2018-06-22 11:21:32,584 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 11:21:32,585 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2018-06-22 11:21:32,585 INFO ]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 13 [2018-06-22 11:21:32,586 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:32,586 INFO ]: Abstraction has 25 states and 32 transitions. [2018-06-22 11:21:32,586 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:21:32,591 INFO ]: Start isEmpty. Operand 25 states and 32 transitions. [2018-06-22 11:21:32,592 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:21:32,592 INFO ]: Found error trace [2018-06-22 11:21:32,592 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:32,592 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:32,593 INFO ]: Analyzing trace with hash 1373693355, now seen corresponding path program 1 times [2018-06-22 11:21:32,593 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:32,593 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:32,594 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:32,594 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:32,594 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:32,618 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:32,732 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:21:32,733 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:32,733 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 11:21:32,738 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:32,761 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:32,763 INFO ]: Computing forward predicates... [2018-06-22 11:21:33,337 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:21:33,379 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:33,379 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 11:21:33,379 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:21:33,379 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:21:33,379 INFO ]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:21:33,380 INFO ]: Start difference. First operand 25 states and 32 transitions. Second operand 10 states. [2018-06-22 11:21:33,499 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:33,499 INFO ]: Finished difference Result 33 states and 40 transitions. [2018-06-22 11:21:33,499 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:21:33,499 INFO ]: Start accepts. Automaton has 10 states. Word has length 17 [2018-06-22 11:21:33,500 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:33,500 INFO ]: With dead ends: 33 [2018-06-22 11:21:33,500 INFO ]: Without dead ends: 22 [2018-06-22 11:21:33,501 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:21:33,501 INFO ]: Start minimizeSevpa. Operand 22 states. [2018-06-22 11:21:33,504 INFO ]: Finished minimizeSevpa. Reduced states from 22 to 20. [2018-06-22 11:21:33,504 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-22 11:21:33,505 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2018-06-22 11:21:33,506 INFO ]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 17 [2018-06-22 11:21:33,506 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:33,506 INFO ]: Abstraction has 20 states and 24 transitions. [2018-06-22 11:21:33,506 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:21:33,506 INFO ]: Start isEmpty. Operand 20 states and 24 transitions. [2018-06-22 11:21:33,507 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:21:33,507 INFO ]: Found error trace [2018-06-22 11:21:33,507 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:33,507 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:33,507 INFO ]: Analyzing trace with hash -1799853431, now seen corresponding path program 2 times [2018-06-22 11:21:33,507 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:33,507 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:33,508 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:33,508 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:33,508 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:33,523 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:33,857 WARN ]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-06-22 11:21:33,859 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:21:33,859 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:33,859 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 11:21:33,877 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:21:33,890 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:21:33,890 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:33,893 INFO ]: Computing forward predicates... [2018-06-22 11:21:34,269 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:21:34,298 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:34,298 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 11:21:34,298 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:21:34,298 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:21:34,298 INFO ]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:21:34,298 INFO ]: Start difference. First operand 20 states and 24 transitions. Second operand 12 states. [2018-06-22 11:21:34,560 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:34,561 INFO ]: Finished difference Result 26 states and 30 transitions. [2018-06-22 11:21:34,561 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:21:34,561 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 11:21:34,561 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:34,562 INFO ]: With dead ends: 26 [2018-06-22 11:21:34,562 INFO ]: Without dead ends: 26 [2018-06-22 11:21:34,563 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:21:34,563 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 11:21:34,566 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 24. [2018-06-22 11:21:34,566 INFO ]: Start removeUnreachable. Operand 24 states. [2018-06-22 11:21:34,567 INFO ]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-06-22 11:21:34,567 INFO ]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2018-06-22 11:21:34,567 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:34,567 INFO ]: Abstraction has 24 states and 28 transitions. [2018-06-22 11:21:34,567 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:21:34,567 INFO ]: Start isEmpty. Operand 24 states and 28 transitions. [2018-06-22 11:21:34,571 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:21:34,571 INFO ]: Found error trace [2018-06-22 11:21:34,571 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:34,571 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:34,571 INFO ]: Analyzing trace with hash -440719969, now seen corresponding path program 1 times [2018-06-22 11:21:34,571 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:34,571 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:34,572 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:34,572 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:21:34,572 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:34,579 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:34,649 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:21:34,649 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:34,649 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 11:21:34,656 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:34,665 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:34,667 INFO ]: Computing forward predicates... [2018-06-22 11:21:34,831 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:21:34,852 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:34,853 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 11:21:34,853 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:21:34,853 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:21:34,853 INFO ]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:21:34,853 INFO ]: Start difference. First operand 24 states and 28 transitions. Second operand 10 states. [2018-06-22 11:21:34,925 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:34,925 INFO ]: Finished difference Result 30 states and 34 transitions. [2018-06-22 11:21:34,925 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:21:34,925 INFO ]: Start accepts. Automaton has 10 states. Word has length 17 [2018-06-22 11:21:34,926 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:34,926 INFO ]: With dead ends: 30 [2018-06-22 11:21:34,926 INFO ]: Without dead ends: 19 [2018-06-22 11:21:34,926 INFO ]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:21:34,927 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:21:34,929 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 11:21:34,929 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:21:34,930 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 11:21:34,930 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2018-06-22 11:21:34,930 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:34,930 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 11:21:34,930 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:21:34,930 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 11:21:34,930 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:21:34,930 INFO ]: Found error trace [2018-06-22 11:21:34,931 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:21:34,931 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:21:34,931 INFO ]: Analyzing trace with hash 539991451, now seen corresponding path program 3 times [2018-06-22 11:21:34,931 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:21:34,931 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:21:34,932 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:34,932 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:21:34,932 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:21:34,957 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:35,179 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:21:35,179 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:21:35,179 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:21:35,185 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:21:35,213 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 11:21:35,213 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:21:35,217 INFO ]: Computing forward predicates... [2018-06-22 11:21:35,491 INFO ]: Checked inductivity of 36 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 11:21:35,510 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:21:35,510 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-06-22 11:21:35,510 INFO ]: Interpolant automaton has 20 states [2018-06-22 11:21:35,510 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 11:21:35,511 INFO ]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:21:35,511 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 11:21:35,997 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:21:35,997 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 11:21:35,998 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:21:35,998 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 11:21:35,998 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:21:35,998 INFO ]: With dead ends: 17 [2018-06-22 11:21:35,998 INFO ]: Without dead ends: 0 [2018-06-22 11:21:35,998 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=145, Invalid=505, Unknown=0, NotChecked=0, Total=650 [2018-06-22 11:21:35,998 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:21:35,998 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:21:35,999 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:21:35,999 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:21:35,999 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-06-22 11:21:35,999 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:21:35,999 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:21:35,999 INFO ]: Interpolant automaton has 20 states. [2018-06-22 11:21:35,999 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:21:35,999 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:21:36,002 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:21:36 BoogieIcfgContainer [2018-06-22 11:21:36,003 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:21:36,003 INFO ]: Toolchain (without parser) took 5746.22 ms. Allocated memory was 302.0 MB in the beginning and 346.0 MB in the end (delta: 44.0 MB). Free memory was 258.4 MB in the beginning and 203.9 MB in the end (delta: 54.4 MB). Peak memory consumption was 98.5 MB. Max. memory is 3.6 GB. [2018-06-22 11:21:36,004 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 302.0 MB. Free memory is still 266.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:21:36,005 INFO ]: ChcToBoogie took 49.94 ms. Allocated memory is still 302.0 MB. Free memory is still 256.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:21:36,005 INFO ]: Boogie Preprocessor took 41.03 ms. Allocated memory is still 302.0 MB. Free memory was 256.4 MB in the beginning and 254.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:21:36,005 INFO ]: RCFGBuilder took 316.96 ms. Allocated memory is still 302.0 MB. Free memory was 254.4 MB in the beginning and 246.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:21:36,006 INFO ]: TraceAbstraction took 5327.02 ms. Allocated memory was 302.0 MB in the beginning and 346.0 MB in the end (delta: 44.0 MB). Free memory was 244.4 MB in the beginning and 203.9 MB in the end (delta: 40.5 MB). Peak memory consumption was 84.5 MB. Max. memory is 3.6 GB. [2018-06-22 11:21:36,010 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 302.0 MB. Free memory is still 266.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 49.94 ms. Allocated memory is still 302.0 MB. Free memory is still 256.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * Boogie Preprocessor took 41.03 ms. Allocated memory is still 302.0 MB. Free memory was 256.4 MB in the beginning and 254.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 316.96 ms. Allocated memory is still 302.0 MB. Free memory was 254.4 MB in the beginning and 246.4 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5327.02 ms. Allocated memory was 302.0 MB in the beginning and 346.0 MB in the end (delta: 44.0 MB). Free memory was 244.4 MB in the beginning and 203.9 MB in the end (delta: 40.5 MB). Peak memory consumption was 84.5 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, 5.2s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 166 SDtfs, 38 SDslu, 497 SDs, 0 SdLazy, 259 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 71 SyntacticMatches, 5 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, 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, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 200 NumberOfCodeBlocks, 200 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 26060 SizeOfPredicates, 47 NumberOfNonLiveVariables, 409 ConjunctsInSsa, 177 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 33/110 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/024-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-21-36-020.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/024-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-21-36-020.csv Received shutdown request...