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/25.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:43:02,755 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:43:02,757 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:43:02,768 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:43:02,769 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:43:02,770 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:43:02,771 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:43:02,778 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:43:02,780 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:43:02,782 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:43:02,783 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:43:02,783 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:43:02,784 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:43:02,785 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:43:02,789 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:43:02,790 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:43:02,790 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:43:02,800 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:43:02,802 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:43:02,803 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:43:02,804 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:43:02,807 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:43:02,809 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:43:02,810 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:43:02,810 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:43:02,811 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:43:02,812 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:43:02,813 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:43:02,814 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:43:02,815 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:43:02,815 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:43:02,815 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:43:02,816 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:43:02,816 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:43:02,817 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:43:02,821 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:43:02,821 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:43:02,836 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:43:02,836 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:43:02,836 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:43:02,837 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:43:02,838 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:43:02,838 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:43:02,838 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:43:02,838 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:43:02,838 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:43:02,838 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:43:02,839 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:43:02,839 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:43:02,839 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:43:02,839 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:43:02,839 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:43:02,840 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:43:02,840 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:43:02,840 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:43:02,840 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:43:02,840 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:43:02,840 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:43:02,842 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:43:02,842 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:43:02,881 INFO ]: Repository-Root is: /tmp [2018-06-26 17:43:02,903 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:43:02,918 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:43:02,921 INFO ]: Initializing SmtParser... [2018-06-26 17:43:02,921 INFO ]: SmtParser initialized [2018-06-26 17:43:02,921 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/25.c.smt2 [2018-06-26 17:43:02,923 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 17:43:03,004 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/25.c.smt2 unknown [2018-06-26 17:43:03,570 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/25.c.smt2 [2018-06-26 17:43:03,574 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:43:03,582 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:43:03,583 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:43:03,583 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:43:03,583 INFO ]: ChcToBoogie initialized [2018-06-26 17:43:03,586 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:43:03" (1/1) ... [2018-06-26 17:43:03,670 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:03 Unit [2018-06-26 17:43:03,670 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:43:03,671 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:43:03,671 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:43:03,671 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:43:03,692 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:03" (1/1) ... [2018-06-26 17:43:03,692 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:03" (1/1) ... [2018-06-26 17:43:03,702 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:03" (1/1) ... [2018-06-26 17:43:03,702 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:03" (1/1) ... [2018-06-26 17:43:03,709 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:03" (1/1) ... [2018-06-26 17:43:03,711 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:03" (1/1) ... [2018-06-26 17:43:03,713 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:03" (1/1) ... [2018-06-26 17:43:03,718 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:43:03,719 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:43:03,719 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:43:03,719 INFO ]: RCFGBuilder initialized [2018-06-26 17:43:03,720 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:03" (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 17:43:03,752 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:43:03,752 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:43:03,752 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:43:03,752 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:43:03,752 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:43:03,752 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 17:43:04,788 INFO ]: Using library mode [2018-06-26 17:43:04,788 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:43:04 BoogieIcfgContainer [2018-06-26 17:43:04,788 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:43:04,789 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:43:04,789 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:43:04,790 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:43:04,791 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:43:04" (1/1) ... [2018-06-26 17:43:04,811 INFO ]: Initial Icfg 46 locations, 52 edges [2018-06-26 17:43:04,812 INFO ]: Using Remove infeasible edges [2018-06-26 17:43:04,813 INFO ]: Using Maximize final states [2018-06-26 17:43:04,813 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:43:04,813 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:43:04,815 INFO ]: Using Remove sink states [2018-06-26 17:43:04,816 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:43:04,816 INFO ]: Using Use SBE [2018-06-26 17:43:04,826 INFO ]: SBE split 0 edges [2018-06-26 17:43:04,832 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:43:04,833 INFO ]: 0 new accepting states [2018-06-26 17:43:05,927 INFO ]: Removed 94 edges and 36 locations by large block encoding [2018-06-26 17:43:05,929 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:43:05,932 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:43:05,932 INFO ]: 0 new accepting states [2018-06-26 17:43:05,932 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:43:05,933 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:43:05,933 INFO ]: Encoded RCFG 8 locations, 14 edges [2018-06-26 17:43:05,933 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:43:05 BasicIcfg [2018-06-26 17:43:05,933 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:43:05,934 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:43:05,934 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:43:05,937 INFO ]: TraceAbstraction initialized [2018-06-26 17:43:05,937 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:43:03" (1/4) ... [2018-06-26 17:43:05,938 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fdb8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:43:05, skipping insertion in model container [2018-06-26 17:43:05,938 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:03" (2/4) ... [2018-06-26 17:43:05,939 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fdb8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:43:05, skipping insertion in model container [2018-06-26 17:43:05,939 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:43:04" (3/4) ... [2018-06-26 17:43:05,939 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fdb8ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:43:05, skipping insertion in model container [2018-06-26 17:43:05,939 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:43:05" (4/4) ... [2018-06-26 17:43:05,940 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:43:05,949 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:43:05,957 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:43:06,001 INFO ]: Using default assertion order modulation [2018-06-26 17:43:06,001 INFO ]: Interprodecural is true [2018-06-26 17:43:06,002 INFO ]: Hoare is false [2018-06-26 17:43:06,002 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:43:06,002 INFO ]: Backedges is TWOTRACK [2018-06-26 17:43:06,002 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:43:06,002 INFO ]: Difference is false [2018-06-26 17:43:06,002 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:43:06,002 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:43:06,014 INFO ]: Start isEmpty. Operand 8 states. [2018-06-26 17:43:06,024 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:43:06,024 INFO ]: Found error trace [2018-06-26 17:43:06,025 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:43:06,025 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:43:06,030 INFO ]: Analyzing trace with hash 36538846, now seen corresponding path program 1 times [2018-06-26 17:43:06,032 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:43:06,032 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:43:06,079 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:06,079 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:43:06,079 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:06,160 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:43:06,342 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:43:06,344 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:43:06,344 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:43:06,345 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:43:06,359 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:43:06,359 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:43:06,363 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-26 17:43:06,520 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:43:06,520 INFO ]: Finished difference Result 11 states and 23 transitions. [2018-06-26 17:43:06,525 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:43:06,526 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:43:06,527 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:43:06,540 INFO ]: With dead ends: 11 [2018-06-26 17:43:06,540 INFO ]: Without dead ends: 11 [2018-06-26 17:43:06,544 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 17:43:06,565 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-26 17:43:06,580 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-26 17:43:06,581 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:43:06,582 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 16 transitions. [2018-06-26 17:43:06,583 INFO ]: Start accepts. Automaton has 9 states and 16 transitions. Word has length 5 [2018-06-26 17:43:06,583 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:43:06,583 INFO ]: Abstraction has 9 states and 16 transitions. [2018-06-26 17:43:06,583 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:43:06,583 INFO ]: Start isEmpty. Operand 9 states and 16 transitions. [2018-06-26 17:43:06,583 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:43:06,583 INFO ]: Found error trace [2018-06-26 17:43:06,583 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:43:06,584 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:43:06,584 INFO ]: Analyzing trace with hash 755971097, now seen corresponding path program 1 times [2018-06-26 17:43:06,584 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:43:06,584 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:43:06,585 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:06,585 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:43:06,585 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:06,655 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:43:06,797 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:43:06,797 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:43:06,797 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 17:43:06,799 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:43:06,799 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:43:06,799 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:43:06,799 INFO ]: Start difference. First operand 9 states and 16 transitions. Second operand 4 states. [2018-06-26 17:43:07,040 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:43:07,040 INFO ]: Finished difference Result 13 states and 28 transitions. [2018-06-26 17:43:07,040 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:43:07,040 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-26 17:43:07,040 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:43:07,041 INFO ]: With dead ends: 13 [2018-06-26 17:43:07,041 INFO ]: Without dead ends: 13 [2018-06-26 17:43:07,042 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:43:07,042 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-26 17:43:07,043 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 10. [2018-06-26 17:43:07,043 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 17:43:07,044 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 19 transitions. [2018-06-26 17:43:07,044 INFO ]: Start accepts. Automaton has 10 states and 19 transitions. Word has length 7 [2018-06-26 17:43:07,044 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:43:07,044 INFO ]: Abstraction has 10 states and 19 transitions. [2018-06-26 17:43:07,044 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:43:07,044 INFO ]: Start isEmpty. Operand 10 states and 19 transitions. [2018-06-26 17:43:07,044 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-26 17:43:07,044 INFO ]: Found error trace [2018-06-26 17:43:07,044 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:43:07,044 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:43:07,044 INFO ]: Analyzing trace with hash 1065449312, now seen corresponding path program 1 times [2018-06-26 17:43:07,044 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:43:07,044 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:43:07,045 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:07,045 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:43:07,045 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:07,083 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:43:07,246 INFO ]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:43:07,246 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:43:07,246 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 17:43:07,246 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:43:07,247 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:43:07,247 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:43:07,247 INFO ]: Start difference. First operand 10 states and 19 transitions. Second operand 4 states. [2018-06-26 17:43:07,314 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:43:07,315 INFO ]: Finished difference Result 5 states and 7 transitions. [2018-06-26 17:43:07,315 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:43:07,315 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-26 17:43:07,315 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:43:07,315 INFO ]: With dead ends: 5 [2018-06-26 17:43:07,315 INFO ]: Without dead ends: 0 [2018-06-26 17:43:07,315 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:43:07,315 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 17:43:07,316 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 17:43:07,316 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 17:43:07,316 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 17:43:07,316 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-26 17:43:07,316 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:43:07,316 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 17:43:07,316 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:43:07,316 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 17:43:07,316 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 17:43:07,318 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:43:07,320 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:43:07 BasicIcfg [2018-06-26 17:43:07,320 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:43:07,321 INFO ]: Toolchain (without parser) took 3745.61 ms. Allocated memory was 307.2 MB in the beginning and 351.8 MB in the end (delta: 44.6 MB). Free memory was 238.7 MB in the beginning and 286.0 MB in the end (delta: -47.3 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:43:07,322 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:43:07,322 INFO ]: ChcToBoogie took 87.65 ms. Allocated memory is still 307.2 MB. Free memory was 238.7 MB in the beginning and 235.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:43:07,323 INFO ]: Boogie Preprocessor took 47.27 ms. Allocated memory is still 307.2 MB. Free memory was 235.7 MB in the beginning and 233.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:43:07,323 INFO ]: RCFGBuilder took 1069.59 ms. Allocated memory was 307.2 MB in the beginning and 321.9 MB in the end (delta: 14.7 MB). Free memory was 233.7 MB in the beginning and 288.7 MB in the end (delta: -55.1 MB). Peak memory consumption was 53.3 MB. Max. memory is 3.6 GB. [2018-06-26 17:43:07,324 INFO ]: BlockEncodingV2 took 1144.21 ms. Allocated memory is still 321.9 MB. Free memory was 288.7 MB in the beginning and 188.6 MB in the end (delta: 100.2 MB). Peak memory consumption was 100.2 MB. Max. memory is 3.6 GB. [2018-06-26 17:43:07,324 INFO ]: TraceAbstraction took 1385.44 ms. Allocated memory was 321.9 MB in the beginning and 351.8 MB in the end (delta: 29.9 MB). Free memory was 188.6 MB in the beginning and 286.0 MB in the end (delta: -97.4 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:43:07,327 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 46 locations, 52 edges - StatisticsResult: Encoded RCFG 8 locations, 14 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 307.2 MB. Free memory is still 272.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 87.65 ms. Allocated memory is still 307.2 MB. Free memory was 238.7 MB in the beginning and 235.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 47.27 ms. Allocated memory is still 307.2 MB. Free memory was 235.7 MB in the beginning and 233.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1069.59 ms. Allocated memory was 307.2 MB in the beginning and 321.9 MB in the end (delta: 14.7 MB). Free memory was 233.7 MB in the beginning and 288.7 MB in the end (delta: -55.1 MB). Peak memory consumption was 53.3 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 1144.21 ms. Allocated memory is still 321.9 MB. Free memory was 288.7 MB in the beginning and 188.6 MB in the end (delta: 100.2 MB). Peak memory consumption was 100.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1385.44 ms. Allocated memory was 321.9 MB in the beginning and 351.8 MB in the end (delta: 29.9 MB). Free memory was 188.6 MB in the beginning and 286.0 MB in the end (delta: -97.4 MB). There was no memory consumed. 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, 8 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 25 SDtfs, 25 SDslu, 27 SDs, 0 SdLazy, 28 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 204 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 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/25.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-43-07-336.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/25.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-43-07-336.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/25.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-43-07-336.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/25.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-43-07-336.csv Received shutdown request...