java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_safe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:06:25,859 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:06:25,863 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:06:25,877 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:06:25,877 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:06:25,878 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:06:25,882 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:06:25,885 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:06:25,886 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:06:25,888 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:06:25,889 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:06:25,890 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:06:25,890 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:06:25,892 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:06:25,896 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:06:25,896 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:06:25,909 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:06:25,911 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:06:25,913 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:06:25,914 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:06:25,915 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:06:25,917 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:06:25,917 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:06:25,917 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:06:25,921 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:06:25,922 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:06:25,923 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:06:25,923 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:06:25,924 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:06:25,925 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:06:25,931 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:06:25,932 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:06:25,932 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:06:25,933 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:06:25,934 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:06:25,934 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:06:25,963 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:06:25,963 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:06:25,963 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:06:25,963 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:06:25,964 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:06:25,965 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:06:25,965 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:06:25,965 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:06:25,965 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:06:25,965 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:06:25,967 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:06:25,967 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:06:25,967 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:06:25,967 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:06:25,968 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:06:25,968 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:06:25,968 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:06:25,968 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:06:25,968 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:06:25,970 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:06:25,970 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:06:26,017 INFO ]: Repository-Root is: /tmp [2018-06-22 11:06:26,035 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:06:26,040 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:06:26,041 INFO ]: Initializing SmtParser... [2018-06-22 11:06:26,041 INFO ]: SmtParser initialized [2018-06-22 11:06:26,042 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_safe.c-1.smt2 [2018-06-22 11:06:26,043 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 11:06:26,135 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_safe.c-1.smt2 unknown [2018-06-22 11:06:26,379 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/while_after_while_if_safe.c-1.smt2 [2018-06-22 11:06:26,383 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:06:26,394 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:06:26,394 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:06:26,394 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:06:26,394 INFO ]: ChcToBoogie initialized [2018-06-22 11:06:26,398 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:06:26" (1/1) ... [2018-06-22 11:06:26,448 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:26 Unit [2018-06-22 11:06:26,448 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:06:26,449 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:06:26,449 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:06:26,449 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:06:26,474 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:26" (1/1) ... [2018-06-22 11:06:26,474 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:26" (1/1) ... [2018-06-22 11:06:26,483 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:26" (1/1) ... [2018-06-22 11:06:26,483 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:26" (1/1) ... [2018-06-22 11:06:26,487 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:26" (1/1) ... [2018-06-22 11:06:26,489 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:26" (1/1) ... [2018-06-22 11:06:26,490 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:26" (1/1) ... [2018-06-22 11:06:26,492 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:06:26,492 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:06:26,492 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:06:26,492 INFO ]: RCFGBuilder initialized [2018-06-22 11:06:26,495 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:26" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 11:06:26,507 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:06:26,507 INFO ]: Found specification of procedure False [2018-06-22 11:06:26,507 INFO ]: Found implementation of procedure False [2018-06-22 11:06:26,507 INFO ]: Specification and implementation of procedure inv_main42 given in one single declaration [2018-06-22 11:06:26,507 INFO ]: Found specification of procedure inv_main42 [2018-06-22 11:06:26,507 INFO ]: Found implementation of procedure inv_main42 [2018-06-22 11:06:26,507 INFO ]: Specification and implementation of procedure inv_main27 given in one single declaration [2018-06-22 11:06:26,508 INFO ]: Found specification of procedure inv_main27 [2018-06-22 11:06:26,508 INFO ]: Found implementation of procedure inv_main27 [2018-06-22 11:06:26,508 INFO ]: Specification and implementation of procedure inv_main26 given in one single declaration [2018-06-22 11:06:26,508 INFO ]: Found specification of procedure inv_main26 [2018-06-22 11:06:26,508 INFO ]: Found implementation of procedure inv_main26 [2018-06-22 11:06:26,508 INFO ]: Specification and implementation of procedure inv_main8 given in one single declaration [2018-06-22 11:06:26,508 INFO ]: Found specification of procedure inv_main8 [2018-06-22 11:06:26,508 INFO ]: Found implementation of procedure inv_main8 [2018-06-22 11:06:26,508 INFO ]: Specification and implementation of procedure inv_main9 given in one single declaration [2018-06-22 11:06:26,508 INFO ]: Found specification of procedure inv_main9 [2018-06-22 11:06:26,508 INFO ]: Found implementation of procedure inv_main9 [2018-06-22 11:06:26,508 INFO ]: Specification and implementation of procedure inv_main3 given in one single declaration [2018-06-22 11:06:26,508 INFO ]: Found specification of procedure inv_main3 [2018-06-22 11:06:26,508 INFO ]: Found implementation of procedure inv_main3 [2018-06-22 11:06:26,508 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:06:26,508 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:06:26,508 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:06:26,860 INFO ]: Using library mode [2018-06-22 11:06:26,860 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:06:26 BoogieIcfgContainer [2018-06-22 11:06:26,861 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:06:26,862 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:06:26,862 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:06:26,872 INFO ]: TraceAbstraction initialized [2018-06-22 11:06:26,872 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:06:26" (1/3) ... [2018-06-22 11:06:26,873 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6dc55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:06:26, skipping insertion in model container [2018-06-22 11:06:26,874 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:06:26" (2/3) ... [2018-06-22 11:06:26,874 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e6dc55b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:06:26, skipping insertion in model container [2018-06-22 11:06:26,874 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:06:26" (3/3) ... [2018-06-22 11:06:26,877 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:06:26,887 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:06:26,898 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:06:26,951 INFO ]: Using default assertion order modulation [2018-06-22 11:06:26,952 INFO ]: Interprodecural is true [2018-06-22 11:06:26,952 INFO ]: Hoare is false [2018-06-22 11:06:26,952 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:06:26,952 INFO ]: Backedges is TWOTRACK [2018-06-22 11:06:26,952 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:06:26,952 INFO ]: Difference is false [2018-06-22 11:06:26,952 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:06:26,952 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:06:26,973 INFO ]: Start isEmpty. Operand 39 states. [2018-06-22 11:06:26,996 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 11:06:26,996 INFO ]: Found error trace [2018-06-22 11:06:26,997 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:26,998 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:27,002 INFO ]: Analyzing trace with hash -691846065, now seen corresponding path program 1 times [2018-06-22 11:06:27,003 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:27,003 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:27,041 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:27,041 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:27,041 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:27,090 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:27,268 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:06:27,276 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:06:27,277 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 11:06:27,279 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:06:27,295 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:06:27,296 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:06:27,298 INFO ]: Start difference. First operand 39 states. Second operand 8 states. [2018-06-22 11:06:27,885 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:27,885 INFO ]: Finished difference Result 47 states and 67 transitions. [2018-06-22 11:06:27,885 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:06:27,886 INFO ]: Start accepts. Automaton has 8 states. Word has length 25 [2018-06-22 11:06:27,887 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:27,906 INFO ]: With dead ends: 47 [2018-06-22 11:06:27,906 INFO ]: Without dead ends: 45 [2018-06-22 11:06:27,910 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:06:27,933 INFO ]: Start minimizeSevpa. Operand 45 states. [2018-06-22 11:06:27,969 INFO ]: Finished minimizeSevpa. Reduced states from 45 to 43. [2018-06-22 11:06:27,971 INFO ]: Start removeUnreachable. Operand 43 states. [2018-06-22 11:06:27,974 INFO ]: Finished removeUnreachable. Reduced from 43 states to 43 states and 60 transitions. [2018-06-22 11:06:27,977 INFO ]: Start accepts. Automaton has 43 states and 60 transitions. Word has length 25 [2018-06-22 11:06:27,977 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:27,977 INFO ]: Abstraction has 43 states and 60 transitions. [2018-06-22 11:06:27,977 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:06:27,977 INFO ]: Start isEmpty. Operand 43 states and 60 transitions. [2018-06-22 11:06:27,980 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:06:27,980 INFO ]: Found error trace [2018-06-22 11:06:27,981 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:27,982 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:27,982 INFO ]: Analyzing trace with hash 298257406, now seen corresponding path program 1 times [2018-06-22 11:06:27,983 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:27,983 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:27,984 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:27,984 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:27,984 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:28,019 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:06:28,237 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:06:28,237 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:06:28,237 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-22 11:06:28,238 INFO ]: Interpolant automaton has 6 states [2018-06-22 11:06:28,239 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 11:06:28,239 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:06:28,239 INFO ]: Start difference. First operand 43 states and 60 transitions. Second operand 6 states. [2018-06-22 11:06:28,479 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:06:28,479 INFO ]: Finished difference Result 56 states and 85 transitions. [2018-06-22 11:06:28,479 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:06:28,479 INFO ]: Start accepts. Automaton has 6 states. Word has length 29 [2018-06-22 11:06:28,479 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:06:28,481 INFO ]: With dead ends: 56 [2018-06-22 11:06:28,481 INFO ]: Without dead ends: 56 [2018-06-22 11:06:28,482 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:06:28,483 INFO ]: Start minimizeSevpa. Operand 56 states. [2018-06-22 11:06:28,495 INFO ]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-06-22 11:06:28,495 INFO ]: Start removeUnreachable. Operand 56 states. [2018-06-22 11:06:28,497 INFO ]: Finished removeUnreachable. Reduced from 56 states to 56 states and 85 transitions. [2018-06-22 11:06:28,497 INFO ]: Start accepts. Automaton has 56 states and 85 transitions. Word has length 29 [2018-06-22 11:06:28,497 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:06:28,497 INFO ]: Abstraction has 56 states and 85 transitions. [2018-06-22 11:06:28,497 INFO ]: Interpolant automaton has 6 states. [2018-06-22 11:06:28,497 INFO ]: Start isEmpty. Operand 56 states and 85 transitions. [2018-06-22 11:06:28,499 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:06:28,499 INFO ]: Found error trace [2018-06-22 11:06:28,499 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:06:28,500 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:06:28,500 INFO ]: Analyzing trace with hash 1911243030, now seen corresponding path program 1 times [2018-06-22 11:06:28,500 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:06:28,500 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:06:28,501 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:28,501 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:06:28,501 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:06:28,516 INFO ]: Conjunction of SSA is sat [2018-06-22 11:06:28,518 INFO ]: Counterexample might be feasible [2018-06-22 11:06:28,536 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:06:28 BoogieIcfgContainer [2018-06-22 11:06:28,536 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:06:28,537 INFO ]: Toolchain (without parser) took 2153.16 ms. Allocated memory was 308.3 MB in the beginning and 326.6 MB in the end (delta: 18.4 MB). Free memory was 262.4 MB in the beginning and 289.3 MB in the end (delta: -26.9 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:06:28,539 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 274.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:06:28,539 INFO ]: ChcToBoogie took 54.43 ms. Allocated memory is still 308.3 MB. Free memory was 262.4 MB in the beginning and 260.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:06:28,540 INFO ]: Boogie Preprocessor took 43.06 ms. Allocated memory is still 308.3 MB. Free memory was 260.4 MB in the beginning and 258.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:06:28,540 INFO ]: RCFGBuilder took 368.26 ms. Allocated memory is still 308.3 MB. Free memory was 258.3 MB in the beginning and 246.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 3.6 GB. [2018-06-22 11:06:28,541 INFO ]: TraceAbstraction took 1673.90 ms. Allocated memory was 308.3 MB in the beginning and 326.6 MB in the end (delta: 18.4 MB). Free memory was 246.7 MB in the beginning and 289.3 MB in the end (delta: -42.6 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:06:28,544 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 274.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.43 ms. Allocated memory is still 308.3 MB. Free memory was 262.4 MB in the beginning and 260.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 43.06 ms. Allocated memory is still 308.3 MB. Free memory was 260.4 MB in the beginning and 258.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 368.26 ms. Allocated memory is still 308.3 MB. Free memory was 258.3 MB in the beginning and 246.7 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1673.90 ms. Allocated memory was 308.3 MB in the beginning and 326.6 MB in the end (delta: 18.4 MB). Free memory was 246.7 MB in the beginning and 289.3 MB in the end (delta: -42.6 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call False(); [L0] assume !(hbv_False_1_Int == hbv_False_2_Int); [L0] CALL call inv_main42(hbv_False_3_Int, hbv_False_4_Int, hbv_False_5_Int, hbv_False_1_Int, hbv_False_2_Int); [L0] assume !(!(hbv_inv_main42_1_Int == 0) && 0 <= hbv_inv_main42_2_Int + -1); [L0] CALL call inv_main27(hhv_inv_main42_0_Int, hhv_inv_main42_1_Int, hhv_inv_main42_2_Int, hhv_inv_main42_3_Int, hbv_inv_main42_3_Int, hbv_inv_main42_4_Int, hbv_inv_main42_2_Int, hhv_inv_main42_4_Int); [L0] assume hbv_inv_main27_1_Int == 0; [L0] CALL call inv_main26(hhv_inv_main27_0_Int, hhv_inv_main27_1_Int, hhv_inv_main27_2_Int, hhv_inv_main27_3_Int, hhv_inv_main27_4_Int, hhv_inv_main27_5_Int, hhv_inv_main27_6_Int, hhv_inv_main27_7_Int); [L0] assume (((hhv_inv_main26_5_Int == hhv_inv_main26_1_Int && hhv_inv_main26_6_Int == hhv_inv_main26_2_Int) && hhv_inv_main26_7_Int == 0) && !(!(hbv_inv_main26_1_Int == 0) && 0 <= hbv_inv_main26_2_Int + -1)) && hhv_inv_main26_4_Int == hhv_inv_main26_0_Int; [L0] CALL call inv_main8(hhv_inv_main26_0_Int, hhv_inv_main26_1_Int, hhv_inv_main26_2_Int, hbv_inv_main26_3_Int, hbv_inv_main26_4_Int, hbv_inv_main26_2_Int, hhv_inv_main26_3_Int); [L0] assume ((0 <= hbv_inv_main8_3_Int + -1 && !(hbv_inv_main8_1_Int == 0)) && hhv_inv_main8_6_Int == hbv_inv_main8_2_Int + 2) && hhv_inv_main8_5_Int == hbv_inv_main8_3_Int + -1; [L0] CALL call inv_main8(hhv_inv_main8_0_Int, hhv_inv_main8_1_Int, hhv_inv_main8_2_Int, hhv_inv_main8_3_Int, hhv_inv_main8_4_Int, hbv_inv_main8_3_Int, hbv_inv_main8_2_Int); [L0] assume (((hhv_inv_main8_3_Int == hhv_inv_main8_0_Int && hhv_inv_main8_5_Int == hhv_inv_main8_2_Int) && !(0 <= hhv_inv_main8_0_Int + -1)) && hhv_inv_main8_6_Int == 0) && hhv_inv_main8_4_Int == hhv_inv_main8_1_Int; [L0] CALL call inv_main3(hhv_inv_main8_0_Int, hhv_inv_main8_1_Int, hhv_inv_main8_2_Int); [L0] assume true; [L0] RET call inv_main3(hhv_inv_main8_0_Int, hhv_inv_main8_1_Int, hhv_inv_main8_2_Int); [L0] RET call inv_main8(hhv_inv_main8_0_Int, hhv_inv_main8_1_Int, hhv_inv_main8_2_Int, hhv_inv_main8_3_Int, hhv_inv_main8_4_Int, hbv_inv_main8_3_Int, hbv_inv_main8_2_Int); [L0] RET call inv_main8(hhv_inv_main26_0_Int, hhv_inv_main26_1_Int, hhv_inv_main26_2_Int, hbv_inv_main26_3_Int, hbv_inv_main26_4_Int, hbv_inv_main26_2_Int, hhv_inv_main26_3_Int); [L0] RET call inv_main26(hhv_inv_main27_0_Int, hhv_inv_main27_1_Int, hhv_inv_main27_2_Int, hhv_inv_main27_3_Int, hhv_inv_main27_4_Int, hhv_inv_main27_5_Int, hhv_inv_main27_6_Int, hhv_inv_main27_7_Int); [L0] RET call inv_main27(hhv_inv_main42_0_Int, hhv_inv_main42_1_Int, hhv_inv_main42_2_Int, hhv_inv_main42_3_Int, hbv_inv_main42_3_Int, hbv_inv_main42_4_Int, hbv_inv_main42_2_Int, hhv_inv_main42_4_Int); [L0] RET call inv_main42(hbv_False_3_Int, hbv_False_4_Int, hbv_False_5_Int, hbv_False_1_Int, hbv_False_2_Int); [L0] RET call False(); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 39 locations, 1 error locations. UNSAFE Result, 1.5s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 95 SDtfs, 11 SDslu, 404 SDs, 0 SdLazy, 155 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 2304 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/while_after_while_if_safe.c-1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-06-28-556.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/while_after_while_if_safe.c-1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-06-28-556.csv Received shutdown request...