java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/007-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:01:50,870 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:01:50,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:01:50,883 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:01:50,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:01:50,884 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:01:50,885 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:01:50,887 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:01:50,888 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:01:50,889 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:01:50,890 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:01:50,890 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:01:50,891 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:01:50,892 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:01:50,893 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:01:50,893 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:01:50,894 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:01:50,896 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:01:50,898 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:01:50,899 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:01:50,900 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:01:50,901 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:01:50,904 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:01:50,904 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:01:50,904 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:01:50,905 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:01:50,906 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:01:50,907 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:01:50,908 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:01:50,909 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:01:50,909 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:01:50,910 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:01:50,910 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:01:50,910 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:01:50,911 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:01:50,912 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:01:50,912 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:01:50,926 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:01:50,926 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:01:50,927 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:01:50,927 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:01:50,928 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:01:50,928 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:01:50,928 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:01:50,929 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:01:50,929 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:01:50,929 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:01:50,930 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:01:50,930 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:01:50,930 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:01:50,930 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:01:50,930 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:01:50,931 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:01:50,931 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:01:50,931 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:01:50,931 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:01:50,932 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:01:50,932 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:01:50,934 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:01:50,934 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:01:50,967 INFO ]: Repository-Root is: /tmp [2018-06-26 18:01:50,982 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:01:50,989 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:01:50,990 INFO ]: Initializing SmtParser... [2018-06-26 18:01:50,991 INFO ]: SmtParser initialized [2018-06-26 18:01:50,991 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/007-horn.smt2 [2018-06-26 18:01:50,992 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 [2018-06-26 18:01:51,086 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/007-horn.smt2 unknown [2018-06-26 18:01:51,250 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/007-horn.smt2 [2018-06-26 18:01:51,255 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:01:51,265 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:01:51,266 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:01:51,266 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:01:51,266 INFO ]: ChcToBoogie initialized [2018-06-26 18:01:51,270 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:01:51" (1/1) ... [2018-06-26 18:01:51,325 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:01:51 Unit [2018-06-26 18:01:51,326 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:01:51,326 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:01:51,326 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:01:51,326 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:01:51,347 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:01:51" (1/1) ... [2018-06-26 18:01:51,347 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:01:51" (1/1) ... [2018-06-26 18:01:51,353 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:01:51" (1/1) ... [2018-06-26 18:01:51,353 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:01:51" (1/1) ... [2018-06-26 18:01:51,356 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:01:51" (1/1) ... [2018-06-26 18:01:51,361 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:01:51" (1/1) ... [2018-06-26 18:01:51,362 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:01:51" (1/1) ... [2018-06-26 18:01:51,365 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:01:51,365 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:01:51,365 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:01:51,365 INFO ]: RCFGBuilder initialized [2018-06-26 18:01:51,366 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:01:51" (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) [2018-06-26 18:01:51,386 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:01:51,386 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:01:51,386 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:01:51,386 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:01:51,386 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:01:51,386 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 [2018-06-26 18:01:51,607 INFO ]: Using library mode [2018-06-26 18:01:51,607 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:01:51 BoogieIcfgContainer [2018-06-26 18:01:51,607 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:01:51,608 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:01:51,608 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:01:51,615 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:01:51,616 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:01:51" (1/1) ... [2018-06-26 18:01:51,641 INFO ]: Initial Icfg 10 locations, 12 edges [2018-06-26 18:01:51,642 INFO ]: Using Remove infeasible edges [2018-06-26 18:01:51,643 INFO ]: Using Maximize final states [2018-06-26 18:01:51,643 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:01:51,644 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:01:51,645 INFO ]: Using Remove sink states [2018-06-26 18:01:51,646 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:01:51,646 INFO ]: Using Use SBE [2018-06-26 18:01:51,660 INFO ]: SBE split 0 edges [2018-06-26 18:01:51,675 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 18:01:51,676 INFO ]: 0 new accepting states [2018-06-26 18:01:51,705 INFO ]: Removed 4 edges and 2 locations by large block encoding [2018-06-26 18:01:51,706 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:01:51,710 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:01:51,710 INFO ]: 0 new accepting states [2018-06-26 18:01:51,710 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:01:51,711 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:01:51,711 INFO ]: Encoded RCFG 6 locations, 8 edges [2018-06-26 18:01:51,711 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:01:51 BasicIcfg [2018-06-26 18:01:51,711 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:01:51,712 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:01:51,712 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:01:51,715 INFO ]: TraceAbstraction initialized [2018-06-26 18:01:51,715 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:01:51" (1/4) ... [2018-06-26 18:01:51,717 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27067788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:01:51, skipping insertion in model container [2018-06-26 18:01:51,717 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:01:51" (2/4) ... [2018-06-26 18:01:51,717 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27067788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:01:51, skipping insertion in model container [2018-06-26 18:01:51,717 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:01:51" (3/4) ... [2018-06-26 18:01:51,718 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27067788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:01:51, skipping insertion in model container [2018-06-26 18:01:51,718 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:01:51" (4/4) ... [2018-06-26 18:01:51,719 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:01:51,729 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:01:51,738 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:01:51,791 INFO ]: Using default assertion order modulation [2018-06-26 18:01:51,791 INFO ]: Interprodecural is true [2018-06-26 18:01:51,791 INFO ]: Hoare is false [2018-06-26 18:01:51,791 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:01:51,791 INFO ]: Backedges is TWOTRACK [2018-06-26 18:01:51,791 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:01:51,792 INFO ]: Difference is false [2018-06-26 18:01:51,792 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:01:51,792 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:01:51,810 INFO ]: Start isEmpty. Operand 6 states. [2018-06-26 18:01:51,828 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:01:51,828 INFO ]: Found error trace [2018-06-26 18:01:51,829 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:01:51,829 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:01:51,836 INFO ]: Analyzing trace with hash 37311172, now seen corresponding path program 1 times [2018-06-26 18:01:51,838 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:01:51,839 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:01:51,872 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:01:51,872 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:01:51,872 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:01:51,915 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:01:51,966 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:01:51,969 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:01:51,969 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:01:51,970 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:01:51,981 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:01:51,982 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:01:51,984 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-26 18:01:52,056 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:01:52,056 INFO ]: Finished difference Result 7 states and 11 transitions. [2018-06-26 18:01:52,057 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:01:52,058 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:01:52,058 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:01:52,067 INFO ]: With dead ends: 7 [2018-06-26 18:01:52,067 INFO ]: Without dead ends: 7 [2018-06-26 18:01:52,069 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:01:52,082 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-26 18:01:52,095 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-26 18:01:52,102 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 18:01:52,102 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-26 18:01:52,103 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 5 [2018-06-26 18:01:52,103 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:01:52,103 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-26 18:01:52,103 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:01:52,104 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-26 18:01:52,104 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:01:52,104 INFO ]: Found error trace [2018-06-26 18:01:52,104 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:01:52,104 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:01:52,104 INFO ]: Analyzing trace with hash 1156261132, now seen corresponding path program 1 times [2018-06-26 18:01:52,104 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:01:52,104 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:01:52,111 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:01:52,112 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:01:52,112 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:01:52,127 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:01:52,157 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:01:52,157 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:01:52,157 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:01:52,159 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:01:52,159 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:01:52,159 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:01:52,159 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 3 states. [2018-06-26 18:01:52,232 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:01:52,232 INFO ]: Finished difference Result 9 states and 17 transitions. [2018-06-26 18:01:52,232 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:01:52,232 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 18:01:52,233 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:01:52,233 INFO ]: With dead ends: 9 [2018-06-26 18:01:52,233 INFO ]: Without dead ends: 9 [2018-06-26 18:01:52,234 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:01:52,234 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-26 18:01:52,235 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 7. [2018-06-26 18:01:52,235 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 18:01:52,236 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-26 18:01:52,236 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 6 [2018-06-26 18:01:52,236 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:01:52,236 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-26 18:01:52,236 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:01:52,236 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-26 18:01:52,236 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:01:52,236 INFO ]: Found error trace [2018-06-26 18:01:52,236 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:01:52,237 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:01:52,237 INFO ]: Analyzing trace with hash 1156320714, now seen corresponding path program 1 times [2018-06-26 18:01:52,237 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:01:52,237 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:01:52,238 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:01:52,238 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:01:52,238 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:01:52,264 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:01:52,348 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:01:52,348 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 18:01:52,348 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 [2018-06-26 18:01:52,354 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:01:52,392 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:01:52,398 INFO ]: Computing forward predicates... [2018-06-26 18:01:52,475 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:01:52,495 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 18:01:52,495 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-26 18:01:52,495 INFO ]: Interpolant automaton has 6 states [2018-06-26 18:01:52,495 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 18:01:52,495 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-26 18:01:52,495 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 6 states. [2018-06-26 18:01:52,872 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:01:52,872 INFO ]: Finished difference Result 14 states and 32 transitions. [2018-06-26 18:01:52,872 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-26 18:01:52,872 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-26 18:01:52,872 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:01:52,873 INFO ]: With dead ends: 14 [2018-06-26 18:01:52,873 INFO ]: Without dead ends: 14 [2018-06-26 18:01:52,873 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-06-26 18:01:52,873 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-26 18:01:52,875 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 8. [2018-06-26 18:01:52,875 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 18:01:52,875 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 14 transitions. [2018-06-26 18:01:52,875 INFO ]: Start accepts. Automaton has 8 states and 14 transitions. Word has length 6 [2018-06-26 18:01:52,875 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:01:52,875 INFO ]: Abstraction has 8 states and 14 transitions. [2018-06-26 18:01:52,875 INFO ]: Interpolant automaton has 6 states. [2018-06-26 18:01:52,875 INFO ]: Start isEmpty. Operand 8 states and 14 transitions. [2018-06-26 18:01:52,876 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 18:01:52,876 INFO ]: Found error trace [2018-06-26 18:01:52,876 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-26 18:01:52,876 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:01:52,876 INFO ]: Analyzing trace with hash 1485878148, now seen corresponding path program 2 times [2018-06-26 18:01:52,876 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:01:52,876 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:01:52,877 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:01:52,877 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:01:52,877 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:01:52,906 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:01:52,965 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-26 18:01:52,965 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:01:52,965 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:01:52,965 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:01:52,965 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:01:52,965 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:01:52,965 INFO ]: Start difference. First operand 8 states and 14 transitions. Second operand 3 states. [2018-06-26 18:01:52,975 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:01:52,975 INFO ]: Finished difference Result 5 states and 11 transitions. [2018-06-26 18:01:52,975 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:01:52,975 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-26 18:01:52,975 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:01:52,976 INFO ]: With dead ends: 5 [2018-06-26 18:01:52,976 INFO ]: Without dead ends: 0 [2018-06-26 18:01:52,976 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:01:52,976 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 18:01:52,976 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 18:01:52,976 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 18:01:52,976 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 18:01:52,976 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-06-26 18:01:52,976 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:01:52,976 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 18:01:52,976 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:01:52,976 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 18:01:52,976 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 18:01:52,978 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:01:52,980 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:01:52 BasicIcfg [2018-06-26 18:01:52,980 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:01:52,981 INFO ]: Toolchain (without parser) took 1725.16 ms. Allocated memory is still 306.2 MB. Free memory was 262.5 MB in the beginning and 202.9 MB in the end (delta: 59.6 MB). Peak memory consumption was 59.6 MB. Max. memory is 3.6 GB. [2018-06-26 18:01:52,982 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 306.2 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:01:52,982 INFO ]: ChcToBoogie took 59.96 ms. Allocated memory is still 306.2 MB. Free memory was 262.5 MB in the beginning and 259.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:01:52,983 INFO ]: Boogie Preprocessor took 38.33 ms. Allocated memory is still 306.2 MB. Free memory was 259.5 MB in the beginning and 258.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-26 18:01:52,984 INFO ]: RCFGBuilder took 242.35 ms. Allocated memory is still 306.2 MB. Free memory was 258.5 MB in the beginning and 249.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:01:52,984 INFO ]: BlockEncodingV2 took 103.37 ms. Allocated memory is still 306.2 MB. Free memory was 249.5 MB in the beginning and 247.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:01:52,985 INFO ]: TraceAbstraction took 1267.43 ms. Allocated memory is still 306.2 MB. Free memory was 246.5 MB in the beginning and 202.9 MB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 MB. Max. memory is 3.6 GB. [2018-06-26 18:01:52,988 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 12 edges - StatisticsResult: Encoded RCFG 6 locations, 8 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 306.2 MB. Free memory is still 271.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 59.96 ms. Allocated memory is still 306.2 MB. Free memory was 262.5 MB in the beginning and 259.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.33 ms. Allocated memory is still 306.2 MB. Free memory was 259.5 MB in the beginning and 258.5 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 242.35 ms. Allocated memory is still 306.2 MB. Free memory was 258.5 MB in the beginning and 249.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 103.37 ms. Allocated memory is still 306.2 MB. Free memory was 249.5 MB in the beginning and 247.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1267.43 ms. Allocated memory is still 306.2 MB. Free memory was 246.5 MB in the beginning and 202.9 MB in the end (delta: 43.7 MB). Peak memory consumption was 43.7 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 2 procedures, 6 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 31 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 365 SizeOfPredicates, 1 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 4/6 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/007-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-01-53-000.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/007-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-01-53-000.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/007-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-01-53-000.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/007-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-01-53-000.csv Received shutdown request...