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_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/llreve/nested-while_merged_unsafe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:14:46,228 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:14:46,230 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:14:46,242 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:14:46,243 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:14:46,244 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:14:46,247 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:14:46,250 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:14:46,251 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:14:46,254 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:14:46,254 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:14:46,255 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:14:46,256 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:14:46,258 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:14:46,259 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:14:46,260 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:14:46,261 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:14:46,272 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:14:46,273 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:14:46,274 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:14:46,275 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:14:46,283 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:14:46,283 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:14:46,283 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:14:46,284 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:14:46,285 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:14:46,286 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:14:46,287 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:14:46,288 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:14:46,288 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:14:46,289 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:14:46,289 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:14:46,290 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:14:46,297 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:14:46,297 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:14:46,298 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:14:46,311 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:14:46,311 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:14:46,315 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:14:46,315 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:14:46,316 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:14:46,316 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:14:46,316 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:14:46,317 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:14:46,317 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:14:46,317 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:14:46,317 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:14:46,317 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:14:46,318 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:14:46,318 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:14:46,318 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:14:46,318 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:14:46,318 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:14:46,320 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:14:46,321 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:14:46,369 INFO ]: Repository-Root is: /tmp [2018-06-22 01:14:46,386 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:14:46,391 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:14:46,392 INFO ]: Initializing SmtParser... [2018-06-22 01:14:46,393 INFO ]: SmtParser initialized [2018-06-22 01:14:46,393 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/nested-while_merged_unsafe.c-1.smt2 [2018-06-22 01:14:46,395 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 01:14:46,491 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/nested-while_merged_unsafe.c-1.smt2 unknown [2018-06-22 01:14:46,686 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/nested-while_merged_unsafe.c-1.smt2 [2018-06-22 01:14:46,691 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:14:46,700 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:14:46,700 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:14:46,700 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:14:46,701 INFO ]: ChcToBoogie initialized [2018-06-22 01:14:46,704 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:14:46" (1/1) ... [2018-06-22 01:14:46,765 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:46 Unit [2018-06-22 01:14:46,765 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:14:46,765 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:14:46,765 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:14:46,766 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:14:46,787 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:46" (1/1) ... [2018-06-22 01:14:46,787 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:46" (1/1) ... [2018-06-22 01:14:46,794 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:46" (1/1) ... [2018-06-22 01:14:46,795 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:46" (1/1) ... [2018-06-22 01:14:46,800 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:46" (1/1) ... [2018-06-22 01:14:46,801 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:46" (1/1) ... [2018-06-22 01:14:46,802 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:46" (1/1) ... [2018-06-22 01:14:46,804 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:14:46,805 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:14:46,805 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:14:46,805 INFO ]: RCFGBuilder initialized [2018-06-22 01:14:46,806 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:46" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:14:46,818 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:14:46,818 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:14:46,818 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:14:46,818 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:14:46,818 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:14:46,818 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:14:47,156 INFO ]: Using library mode [2018-06-22 01:14:47,157 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:14:47 BoogieIcfgContainer [2018-06-22 01:14:47,157 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:14:47,158 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:14:47,158 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:14:47,161 INFO ]: TraceAbstraction initialized [2018-06-22 01:14:47,161 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:14:46" (1/3) ... [2018-06-22 01:14:47,162 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a07446a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:14:47, skipping insertion in model container [2018-06-22 01:14:47,162 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:14:46" (2/3) ... [2018-06-22 01:14:47,163 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a07446a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:14:47, skipping insertion in model container [2018-06-22 01:14:47,163 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:14:47" (3/3) ... [2018-06-22 01:14:47,164 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:14:47,173 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:14:47,181 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:14:47,218 INFO ]: Using default assertion order modulation [2018-06-22 01:14:47,218 INFO ]: Interprodecural is true [2018-06-22 01:14:47,218 INFO ]: Hoare is false [2018-06-22 01:14:47,218 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:14:47,218 INFO ]: Backedges is TWOTRACK [2018-06-22 01:14:47,218 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:14:47,218 INFO ]: Difference is false [2018-06-22 01:14:47,218 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:14:47,218 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:14:47,231 INFO ]: Start isEmpty. Operand 14 states. [2018-06-22 01:14:47,241 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 01:14:47,241 INFO ]: Found error trace [2018-06-22 01:14:47,242 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:14:47,242 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:14:47,246 INFO ]: Analyzing trace with hash 1740988214, now seen corresponding path program 1 times [2018-06-22 01:14:47,247 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:14:47,248 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:14:47,279 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:14:47,279 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:14:47,279 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:14:47,317 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:14:47,409 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:14:47,410 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:14:47,410 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:14:47,411 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:14:47,422 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:14:47,422 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:14:47,424 INFO ]: Start difference. First operand 14 states. Second operand 4 states. [2018-06-22 01:14:47,502 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:14:47,502 INFO ]: Finished difference Result 18 states and 26 transitions. [2018-06-22 01:14:47,502 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 01:14:47,503 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 01:14:47,504 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:14:47,511 INFO ]: With dead ends: 18 [2018-06-22 01:14:47,511 INFO ]: Without dead ends: 18 [2018-06-22 01:14:47,513 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:14:47,528 INFO ]: Start minimizeSevpa. Operand 18 states. [2018-06-22 01:14:47,556 INFO ]: Finished minimizeSevpa. Reduced states from 18 to 13. [2018-06-22 01:14:47,557 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 01:14:47,557 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 18 transitions. [2018-06-22 01:14:47,561 INFO ]: Start accepts. Automaton has 13 states and 18 transitions. Word has length 9 [2018-06-22 01:14:47,561 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:14:47,561 INFO ]: Abstraction has 13 states and 18 transitions. [2018-06-22 01:14:47,561 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:14:47,561 INFO ]: Start isEmpty. Operand 13 states and 18 transitions. [2018-06-22 01:14:47,561 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 01:14:47,561 INFO ]: Found error trace [2018-06-22 01:14:47,561 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:14:47,562 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:14:47,562 INFO ]: Analyzing trace with hash -1798703531, now seen corresponding path program 1 times [2018-06-22 01:14:47,562 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:14:47,562 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:14:47,563 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:14:47,563 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:14:47,563 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:14:47,584 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:14:47,686 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:14:47,686 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:14:47,686 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:14:47,687 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:14:47,688 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:14:47,688 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:14:47,688 INFO ]: Start difference. First operand 13 states and 18 transitions. Second operand 4 states. [2018-06-22 01:14:47,948 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:14:47,948 INFO ]: Finished difference Result 18 states and 25 transitions. [2018-06-22 01:14:47,949 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 01:14:47,949 INFO ]: Start accepts. Automaton has 4 states. Word has length 10 [2018-06-22 01:14:47,949 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:14:47,949 INFO ]: With dead ends: 18 [2018-06-22 01:14:47,949 INFO ]: Without dead ends: 17 [2018-06-22 01:14:47,950 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:14:47,950 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 01:14:47,952 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 13. [2018-06-22 01:14:47,952 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 01:14:47,955 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 17 transitions. [2018-06-22 01:14:47,955 INFO ]: Start accepts. Automaton has 13 states and 17 transitions. Word has length 10 [2018-06-22 01:14:47,955 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:14:47,955 INFO ]: Abstraction has 13 states and 17 transitions. [2018-06-22 01:14:47,955 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:14:47,955 INFO ]: Start isEmpty. Operand 13 states and 17 transitions. [2018-06-22 01:14:47,956 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 01:14:47,956 INFO ]: Found error trace [2018-06-22 01:14:47,956 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:14:47,956 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:14:47,956 INFO ]: Analyzing trace with hash -1279778582, now seen corresponding path program 1 times [2018-06-22 01:14:47,956 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:14:47,956 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:14:47,957 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:14:47,957 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:14:47,957 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:14:47,992 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:14:48,103 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:14:48,103 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:14:48,104 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:14:48,104 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:14:48,104 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:14:48,104 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:14:48,104 INFO ]: Start difference. First operand 13 states and 17 transitions. Second operand 3 states. [2018-06-22 01:14:48,113 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:14:48,113 INFO ]: Finished difference Result 14 states and 18 transitions. [2018-06-22 01:14:48,114 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:14:48,114 INFO ]: Start accepts. Automaton has 3 states. Word has length 11 [2018-06-22 01:14:48,114 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:14:48,114 INFO ]: With dead ends: 14 [2018-06-22 01:14:48,114 INFO ]: Without dead ends: 14 [2018-06-22 01:14:48,114 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:14:48,114 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 01:14:48,116 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 13. [2018-06-22 01:14:48,116 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 01:14:48,117 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2018-06-22 01:14:48,118 INFO ]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 11 [2018-06-22 01:14:48,118 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:14:48,118 INFO ]: Abstraction has 13 states and 16 transitions. [2018-06-22 01:14:48,118 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:14:48,118 INFO ]: Start isEmpty. Operand 13 states and 16 transitions. [2018-06-22 01:14:48,118 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 01:14:48,118 INFO ]: Found error trace [2018-06-22 01:14:48,118 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:14:48,118 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:14:48,119 INFO ]: Analyzing trace with hash -953193695, now seen corresponding path program 1 times [2018-06-22 01:14:48,119 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:14:48,119 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:14:48,120 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:14:48,120 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:14:48,120 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:14:48,149 INFO ]: Conjunction of SSA is sat [2018-06-22 01:14:48,153 INFO ]: Counterexample might be feasible [2018-06-22 01:14:48,164 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:14:48 BoogieIcfgContainer [2018-06-22 01:14:48,164 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:14:48,165 INFO ]: Toolchain (without parser) took 1473.83 ms. Allocated memory is still 308.8 MB. Free memory was 263.3 MB in the beginning and 215.4 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.9 MB. Max. memory is 3.6 GB. [2018-06-22 01:14:48,166 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:14:48,167 INFO ]: ChcToBoogie took 64.76 ms. Allocated memory is still 308.8 MB. Free memory was 263.3 MB in the beginning and 261.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:14:48,167 INFO ]: Boogie Preprocessor took 38.82 ms. Allocated memory is still 308.8 MB. Free memory was 261.3 MB in the beginning and 259.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:14:48,168 INFO ]: RCFGBuilder took 352.23 ms. Allocated memory is still 308.8 MB. Free memory was 259.4 MB in the beginning and 247.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:14:48,169 INFO ]: TraceAbstraction took 1006.40 ms. Allocated memory is still 308.8 MB. Free memory was 247.4 MB in the beginning and 215.4 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 3.6 GB. [2018-06-22 01:14:48,172 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 308.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 64.76 ms. Allocated memory is still 308.8 MB. Free memory was 263.3 MB in the beginning and 261.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.82 ms. Allocated memory is still 308.8 MB. Free memory was 261.3 MB in the beginning and 259.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 352.23 ms. Allocated memory is still 308.8 MB. Free memory was 259.4 MB in the beginning and 247.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1006.40 ms. Allocated memory is still 308.8 MB. Free memory was 247.4 MB in the beginning and 215.4 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. 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 gotoProc(0, 0, 0, 0, 0, 0, 0, 0, 0); [L0] gotoSwitch := gotoSwitch_in; [L0] assume !(hbv_False_1_Int == hbv_False_2_Int); [L0] hhv_inv_main13_0_Int, hhv_inv_main13_1_Int, hhv_inv_main13_2_Int, hhv_inv_main13_3_Int, hhv_inv_main13_4_Int, hhv_inv_main13_5_Int, hhv_inv_main13_6_Int, hhv_inv_main13_7_Int := hbv_False_3_Int, hbv_False_4_Int, hbv_False_5_Int, hbv_False_6_Int, hbv_False_1_Int, hbv_False_2_Int, hbv_False_7_Int, hbv_False_8_Int; [L0] havoc hbv_False_3_Int, hbv_False_2_Int, hbv_False_5_Int, hbv_False_4_Int, hbv_False_8_Int, hbv_False_7_Int, hbv_False_6_Int, hbv_False_1_Int; [L0] assume !(0 <= hhv_inv_main13_2_Int + -1 * hhv_inv_main13_7_Int + -1); [L0] hhv_inv_main5_0_Int, hhv_inv_main5_1_Int, hhv_inv_main5_2_Int, hhv_inv_main5_3_Int, hhv_inv_main5_4_Int, hhv_inv_main5_5_Int, hhv_inv_main5_6_Int, hhv_inv_main5_7_Int := hhv_inv_main13_0_Int, hhv_inv_main13_1_Int, hhv_inv_main13_2_Int, hhv_inv_main13_3_Int, hhv_inv_main13_4_Int, hhv_inv_main13_5_Int, hhv_inv_main13_6_Int, hhv_inv_main13_7_Int; [L0] assume !(0 <= hhv_inv_main5_7_Int + -1 * hhv_inv_main5_2_Int + -1); [L0] hhv_inv_main16_0_Int, hhv_inv_main16_1_Int, hhv_inv_main16_2_Int, hhv_inv_main16_3_Int, hhv_inv_main16_4_Int, hhv_inv_main16_5_Int, hhv_inv_main16_6_Int, hhv_inv_main16_7_Int := hhv_inv_main5_0_Int, hhv_inv_main5_1_Int, hhv_inv_main5_2_Int, hhv_inv_main5_3_Int, hhv_inv_main5_4_Int, hhv_inv_main5_5_Int, hhv_inv_main5_6_Int, hhv_inv_main5_7_Int; [L0] assume (hhv_inv_main16_7_Int == hbv_inv_main16_1_Int + 1 && hhv_inv_main16_5_Int == hbv_inv_main16_2_Int + -2) && 0 <= hhv_inv_main16_2_Int + -1 * hbv_inv_main16_1_Int + -1; [L0] hhv_inv_main5_0_Int, hhv_inv_main5_1_Int, hhv_inv_main5_2_Int, hhv_inv_main5_3_Int, hhv_inv_main5_4_Int, hhv_inv_main5_5_Int, hhv_inv_main5_6_Int, hhv_inv_main5_7_Int := hhv_inv_main16_0_Int, hhv_inv_main16_1_Int, hhv_inv_main16_2_Int, hhv_inv_main16_3_Int, hhv_inv_main16_4_Int, hbv_inv_main16_2_Int, hhv_inv_main16_6_Int, hbv_inv_main16_1_Int; [L0] havoc hbv_inv_main16_1_Int, hbv_inv_main16_2_Int; [L0] assume !(0 <= hhv_inv_main5_1_Int + -1 * hhv_inv_main5_6_Int + -1) && !(0 <= hhv_inv_main5_6_Int + -1 * hhv_inv_main5_1_Int + -1); [L0] hhv_inv_main9_0_Int, hhv_inv_main9_1_Int, hhv_inv_main9_2_Int, hhv_inv_main9_3_Int, hhv_inv_main9_4_Int, hhv_inv_main9_5_Int, hhv_inv_main9_6_Int, hhv_inv_main9_7_Int := hhv_inv_main5_0_Int, hhv_inv_main5_1_Int, hhv_inv_main5_2_Int, hhv_inv_main5_3_Int, hhv_inv_main5_4_Int, hhv_inv_main5_5_Int, hhv_inv_main5_6_Int, hhv_inv_main5_7_Int; [L0] assume (((((hhv_inv_main9_1_Int == hhv_inv_main9_0_Int && hhv_inv_main9_6_Int == 1) && hhv_inv_main9_4_Int == hhv_inv_main9_3_Int + -2 + 1) && hhv_inv_main9_2_Int == hhv_inv_main9_0_Int) && hhv_inv_main9_5_Int == hhv_inv_main9_3_Int) && 0 <= hhv_inv_main9_0_Int + -1) && hhv_inv_main9_7_Int == 0; [L0] assume true; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 14 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 41 SDslu, 43 SDs, 0 SdLazy, 23 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, 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, 10 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 545 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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/nested-while_merged_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-14-48-183.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/nested-while_merged_unsafe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-14-48-183.csv Received shutdown request...