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/HOLA/15.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:39:49,913 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:39:49,914 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:39:49,928 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:39:49,928 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:39:49,930 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:39:49,931 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:39:49,934 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:39:49,935 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:39:49,936 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:39:49,938 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:39:49,938 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:39:49,939 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:39:49,940 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:39:49,940 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:39:49,941 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:39:49,944 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:39:49,946 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:39:49,954 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:39:49,956 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:39:49,957 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:39:49,961 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:39:49,961 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:39:49,961 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:39:49,962 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:39:49,963 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:39:49,964 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:39:49,964 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:39:49,969 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:39:49,969 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:39:49,970 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:39:49,970 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:39:49,971 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:39:49,971 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:39:49,972 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:39:49,972 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:39:49,988 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:39:49,988 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:39:49,989 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:39:49,989 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:39:49,990 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:39:49,990 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:39:49,990 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:39:49,990 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:39:49,991 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:39:49,991 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:39:49,991 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:39:49,991 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:39:49,991 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:39:49,992 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:39:49,992 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:39:49,992 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:39:49,992 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:39:49,992 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:39:49,992 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:39:49,993 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:39:49,993 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:39:49,995 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:39:49,995 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:39:50,033 INFO ]: Repository-Root is: /tmp [2018-06-24 20:39:50,046 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:39:50,050 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:39:50,051 INFO ]: Initializing SmtParser... [2018-06-24 20:39:50,051 INFO ]: SmtParser initialized [2018-06-24 20:39:50,052 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/15.c.smt2 [2018-06-24 20:39:50,053 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 [2018-06-24 20:39:50,133 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/15.c.smt2 unknown [2018-06-24 20:39:50,519 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/15.c.smt2 [2018-06-24 20:39:50,524 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:39:50,530 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:39:50,531 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:39:50,531 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:39:50,531 INFO ]: ChcToBoogie initialized [2018-06-24 20:39:50,534 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:39:50" (1/1) ... [2018-06-24 20:39:50,597 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:50 Unit [2018-06-24 20:39:50,597 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:39:50,597 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:39:50,597 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:39:50,597 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:39:50,642 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:50" (1/1) ... [2018-06-24 20:39:50,642 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:50" (1/1) ... [2018-06-24 20:39:50,657 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:50" (1/1) ... [2018-06-24 20:39:50,657 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:50" (1/1) ... [2018-06-24 20:39:50,661 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:50" (1/1) ... [2018-06-24 20:39:50,672 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:50" (1/1) ... [2018-06-24 20:39:50,674 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:50" (1/1) ... [2018-06-24 20:39:50,677 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:39:50,677 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:39:50,677 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:39:50,677 INFO ]: RCFGBuilder initialized [2018-06-24 20:39:50,679 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:50" (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) [2018-06-24 20:39:50,690 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:39:50,691 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:39:50,691 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:39:50,691 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:39:50,691 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:39:50,691 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 [2018-06-24 20:39:51,285 INFO ]: Using library mode [2018-06-24 20:39:51,285 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:51 BoogieIcfgContainer [2018-06-24 20:39:51,285 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:39:51,286 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:39:51,286 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:39:51,288 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:39:51,289 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:51" (1/1) ... [2018-06-24 20:39:51,309 INFO ]: Initial Icfg 28 locations, 28 edges [2018-06-24 20:39:51,310 INFO ]: Using Remove infeasible edges [2018-06-24 20:39:51,311 INFO ]: Using Maximize final states [2018-06-24 20:39:51,311 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:39:51,311 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:39:51,314 INFO ]: Using Remove sink states [2018-06-24 20:39:51,315 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:39:51,315 INFO ]: Using Use SBE [2018-06-24 20:39:51,327 INFO ]: SBE split 0 edges [2018-06-24 20:39:51,343 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 20:39:51,345 INFO ]: 0 new accepting states [2018-06-24 20:39:51,795 INFO ]: Removed 41 edges and 20 locations by large block encoding [2018-06-24 20:39:51,797 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:51,801 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:39:51,801 INFO ]: 0 new accepting states [2018-06-24 20:39:51,801 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:39:51,802 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:51,802 INFO ]: Encoded RCFG 6 locations, 6 edges [2018-06-24 20:39:51,802 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:39:51 BasicIcfg [2018-06-24 20:39:51,802 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:39:51,807 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:39:51,807 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:39:51,811 INFO ]: TraceAbstraction initialized [2018-06-24 20:39:51,811 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:39:50" (1/4) ... [2018-06-24 20:39:51,812 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0bf706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:39:51, skipping insertion in model container [2018-06-24 20:39:51,812 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:50" (2/4) ... [2018-06-24 20:39:51,812 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0bf706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:39:51, skipping insertion in model container [2018-06-24 20:39:51,813 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:51" (3/4) ... [2018-06-24 20:39:51,813 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0bf706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:39:51, skipping insertion in model container [2018-06-24 20:39:51,813 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:39:51" (4/4) ... [2018-06-24 20:39:51,815 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:39:51,825 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:39:51,833 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:39:51,875 INFO ]: Using default assertion order modulation [2018-06-24 20:39:51,875 INFO ]: Interprodecural is true [2018-06-24 20:39:51,875 INFO ]: Hoare is false [2018-06-24 20:39:51,875 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:39:51,875 INFO ]: Backedges is TWOTRACK [2018-06-24 20:39:51,875 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:39:51,876 INFO ]: Difference is false [2018-06-24 20:39:51,876 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:39:51,876 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:39:51,884 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 20:39:51,891 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:39:51,891 INFO ]: Found error trace [2018-06-24 20:39:51,892 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:39:51,893 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:51,897 INFO ]: Analyzing trace with hash 33412909, now seen corresponding path program 1 times [2018-06-24 20:39:51,899 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:51,899 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:51,930 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:51,930 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:51,930 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:52,022 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:52,184 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:52,186 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:52,187 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:39:52,188 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:39:52,204 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:39:52,204 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:52,207 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 20:39:52,279 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:52,279 INFO ]: Finished difference Result 7 states and 7 transitions. [2018-06-24 20:39:52,281 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:39:52,282 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:39:52,282 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:52,291 INFO ]: With dead ends: 7 [2018-06-24 20:39:52,291 INFO ]: Without dead ends: 7 [2018-06-24 20:39:52,296 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 [2018-06-24 20:39:52,314 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 20:39:52,334 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 20:39:52,336 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 20:39:52,336 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2018-06-24 20:39:52,337 INFO ]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2018-06-24 20:39:52,337 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:52,337 INFO ]: Abstraction has 7 states and 7 transitions. [2018-06-24 20:39:52,337 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:39:52,337 INFO ]: Start isEmpty. Operand 7 states and 7 transitions. [2018-06-24 20:39:52,337 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:39:52,337 INFO ]: Found error trace [2018-06-24 20:39:52,337 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:39:52,338 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:52,338 INFO ]: Analyzing trace with hash 1035492776, now seen corresponding path program 1 times [2018-06-24 20:39:52,338 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:52,338 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:52,339 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:52,339 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:52,339 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:52,426 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:52,553 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:52,553 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:39:52,553 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 [2018-06-24 20:39:52,566 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:52,695 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:52,706 INFO ]: Computing forward predicates... [2018-06-24 20:39:52,753 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:52,788 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:39:52,788 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-24 20:39:52,789 INFO ]: Interpolant automaton has 4 states [2018-06-24 20:39:52,789 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 20:39:52,789 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-24 20:39:52,789 INFO ]: Start difference. First operand 7 states and 7 transitions. Second operand 4 states. [2018-06-24 20:39:52,884 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:52,884 INFO ]: Finished difference Result 8 states and 8 transitions. [2018-06-24 20:39:52,885 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 20:39:52,885 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-24 20:39:52,885 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:52,886 INFO ]: With dead ends: 8 [2018-06-24 20:39:52,886 INFO ]: Without dead ends: 8 [2018-06-24 20:39:52,886 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-24 20:39:52,886 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-24 20:39:52,887 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-24 20:39:52,887 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-24 20:39:52,888 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-06-24 20:39:52,888 INFO ]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-06-24 20:39:52,888 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:52,888 INFO ]: Abstraction has 8 states and 8 transitions. [2018-06-24 20:39:52,888 INFO ]: Interpolant automaton has 4 states. [2018-06-24 20:39:52,888 INFO ]: Start isEmpty. Operand 8 states and 8 transitions. [2018-06-24 20:39:52,888 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:39:52,888 INFO ]: Found error trace [2018-06-24 20:39:52,888 INFO ]: trace histogram [2, 1, 1, 1, 1, 1] [2018-06-24 20:39:52,888 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:52,888 INFO ]: Analyzing trace with hash 2035197581, now seen corresponding path program 2 times [2018-06-24 20:39:52,888 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:52,888 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:52,889 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:52,889 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:52,889 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:52,934 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:53,025 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:53,025 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:39:53,025 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 [2018-06-24 20:39:53,031 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 20:39:53,150 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 20:39:53,150 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:53,155 INFO ]: Computing forward predicates... [2018-06-24 20:39:53,179 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:53,212 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:39:53,212 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-06-24 20:39:53,212 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:39:53,212 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:39:53,212 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:39:53,212 INFO ]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2018-06-24 20:39:53,263 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:53,263 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-24 20:39:53,263 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:39:53,263 INFO ]: Start accepts. Automaton has 5 states. Word has length 7 [2018-06-24 20:39:53,263 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:53,263 INFO ]: With dead ends: 9 [2018-06-24 20:39:53,263 INFO ]: Without dead ends: 9 [2018-06-24 20:39:53,264 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:39:53,264 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-24 20:39:53,265 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-24 20:39:53,265 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:39:53,265 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-24 20:39:53,265 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-24 20:39:53,265 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:53,265 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-24 20:39:53,265 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:39:53,265 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-24 20:39:53,265 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 20:39:53,266 INFO ]: Found error trace [2018-06-24 20:39:53,266 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-24 20:39:53,266 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:53,266 INFO ]: Analyzing trace with hash -1333691832, now seen corresponding path program 3 times [2018-06-24 20:39:53,266 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:53,266 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:53,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:53,267 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 20:39:53,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:53,300 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:53,438 INFO ]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 20:39:53,439 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:39:53,439 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:39:53,445 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-24 20:39:53,611 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-24 20:39:53,611 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:53,618 INFO ]: Computing forward predicates... [2018-06-24 20:39:53,969 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:53,994 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:39:53,994 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 7 [2018-06-24 20:39:53,995 INFO ]: Interpolant automaton has 7 states [2018-06-24 20:39:53,995 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 20:39:53,995 INFO ]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:39:53,995 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 7 states. [2018-06-24 20:39:54,099 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:54,099 INFO ]: Finished difference Result 7 states and 7 transitions. [2018-06-24 20:39:54,099 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 20:39:54,099 INFO ]: Start accepts. Automaton has 7 states. Word has length 8 [2018-06-24 20:39:54,099 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:54,099 INFO ]: With dead ends: 7 [2018-06-24 20:39:54,099 INFO ]: Without dead ends: 0 [2018-06-24 20:39:54,100 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-06-24 20:39:54,100 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 20:39:54,100 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 20:39:54,100 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 20:39:54,100 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 20:39:54,100 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-24 20:39:54,100 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:54,100 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 20:39:54,100 INFO ]: Interpolant automaton has 7 states. [2018-06-24 20:39:54,100 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 20:39:54,100 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 20:39:54,101 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:39:54,103 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:39:54 BasicIcfg [2018-06-24 20:39:54,103 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:39:54,104 INFO ]: Toolchain (without parser) took 3578.96 ms. Allocated memory was 308.8 MB in the beginning and 355.5 MB in the end (delta: 46.7 MB). Free memory was 252.3 MB in the beginning and 301.8 MB in the end (delta: -49.5 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:39:54,105 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:39:54,105 INFO ]: ChcToBoogie took 66.41 ms. Allocated memory is still 308.8 MB. Free memory was 251.3 MB in the beginning and 249.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:54,105 INFO ]: Boogie Preprocessor took 79.45 ms. Allocated memory is still 308.8 MB. Free memory was 249.3 MB in the beginning and 247.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:54,114 INFO ]: RCFGBuilder took 608.17 ms. Allocated memory is still 308.8 MB. Free memory was 247.3 MB in the beginning and 221.3 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:54,115 INFO ]: BlockEncodingV2 took 516.51 ms. Allocated memory was 308.8 MB in the beginning and 324.5 MB in the end (delta: 15.7 MB). Free memory was 221.3 MB in the beginning and 285.1 MB in the end (delta: -63.8 MB). Peak memory consumption was 39.5 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:54,115 INFO ]: TraceAbstraction took 2295.98 ms. Allocated memory was 324.5 MB in the beginning and 355.5 MB in the end (delta: 30.9 MB). Free memory was 285.1 MB in the beginning and 301.8 MB in the end (delta: -16.7 MB). Peak memory consumption was 14.3 MB. Max. memory is 3.6 GB. [2018-06-24 20:39:54,118 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 28 locations, 28 edges - StatisticsResult: Encoded RCFG 6 locations, 6 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 308.8 MB. Free memory is still 274.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 66.41 ms. Allocated memory is still 308.8 MB. Free memory was 251.3 MB in the beginning and 249.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 79.45 ms. Allocated memory is still 308.8 MB. Free memory was 249.3 MB in the beginning and 247.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 608.17 ms. Allocated memory is still 308.8 MB. Free memory was 247.3 MB in the beginning and 221.3 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 516.51 ms. Allocated memory was 308.8 MB in the beginning and 324.5 MB in the end (delta: 15.7 MB). Free memory was 221.3 MB in the beginning and 285.1 MB in the end (delta: -63.8 MB). Peak memory consumption was 39.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2295.98 ms. Allocated memory was 324.5 MB in the beginning and 355.5 MB in the end (delta: 30.9 MB). Free memory was 285.1 MB in the beginning and 301.8 MB in the end (delta: -16.7 MB). Peak memory consumption was 14.3 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, 2.2s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 19 SDs, 0 SdLazy, 26 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 695 SizeOfPredicates, 76 NumberOfNonLiveVariables, 1986 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 3/20 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/15.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-39-54-130.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/15.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-39-54-130.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/15.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-39-54-130.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/15.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-39-54-130.csv Received shutdown request...