java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/002c-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:57:13,111 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:57:13,120 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:57:13,137 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:57:13,137 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:57:13,138 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:57:13,139 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:57:13,143 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:57:13,144 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:57:13,146 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:57:13,147 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:57:13,147 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:57:13,148 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:57:13,149 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:57:13,153 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:57:13,154 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:57:13,154 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:57:13,167 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:57:13,169 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:57:13,170 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:57:13,171 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:57:13,172 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:57:13,174 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:57:13,174 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:57:13,174 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:57:13,178 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:57:13,179 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:57:13,179 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:57:13,180 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:57:13,184 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:57:13,185 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:57:13,185 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:57:13,186 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:57:13,186 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:57:13,187 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:57:13,187 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:57:13,187 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:57:13,208 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:57:13,209 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:57:13,209 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:57:13,209 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:57:13,212 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:57:13,213 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:57:13,213 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:57:13,213 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:57:13,213 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:57:13,214 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:57:13,214 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:57:13,214 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:57:13,214 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:57:13,214 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:57:13,214 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:57:13,215 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:57:13,215 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:57:13,215 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:57:13,215 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:57:13,215 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:57:13,216 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:57:13,218 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:57:13,218 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:57:13,263 INFO ]: Repository-Root is: /tmp [2018-06-26 17:57:13,279 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:57:13,284 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:57:13,286 INFO ]: Initializing SmtParser... [2018-06-26 17:57:13,286 INFO ]: SmtParser initialized [2018-06-26 17:57:13,287 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/002c-horn.smt2 [2018-06-26 17:57:13,288 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 17:57:13,376 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/002c-horn.smt2 unknown [2018-06-26 17:57:13,613 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/002c-horn.smt2 [2018-06-26 17:57:13,618 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:57:13,624 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:57:13,624 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:57:13,624 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:57:13,625 INFO ]: ChcToBoogie initialized [2018-06-26 17:57:13,629 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:57:13" (1/1) ... [2018-06-26 17:57:13,683 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:57:13 Unit [2018-06-26 17:57:13,683 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:57:13,684 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:57:13,684 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:57:13,684 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:57:13,706 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:57:13" (1/1) ... [2018-06-26 17:57:13,706 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:57:13" (1/1) ... [2018-06-26 17:57:13,713 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:57:13" (1/1) ... [2018-06-26 17:57:13,713 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:57:13" (1/1) ... [2018-06-26 17:57:13,728 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:57:13" (1/1) ... [2018-06-26 17:57:13,730 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:57:13" (1/1) ... [2018-06-26 17:57:13,731 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:57:13" (1/1) ... [2018-06-26 17:57:13,733 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:57:13,743 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:57:13,743 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:57:13,743 INFO ]: RCFGBuilder initialized [2018-06-26 17:57:13,744 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:57:13" (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 17:57:13,761 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:57:13,761 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:57:13,761 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:57:13,761 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:57:13,761 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:57:13,761 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 17:57:14,166 INFO ]: Using library mode [2018-06-26 17:57:14,166 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:57:14 BoogieIcfgContainer [2018-06-26 17:57:14,166 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:57:14,167 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:57:14,167 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:57:14,168 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:57:14,168 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:57:14" (1/1) ... [2018-06-26 17:57:14,182 INFO ]: Initial Icfg 12 locations, 28 edges [2018-06-26 17:57:14,183 INFO ]: Using Remove infeasible edges [2018-06-26 17:57:14,183 INFO ]: Using Maximize final states [2018-06-26 17:57:14,184 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:57:14,184 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:57:14,185 INFO ]: Using Remove sink states [2018-06-26 17:57:14,186 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:57:14,186 INFO ]: Using Use SBE [2018-06-26 17:57:14,192 INFO ]: SBE split 0 edges [2018-06-26 17:57:14,197 INFO ]: Removed 6 edges and 2 locations because of local infeasibility [2018-06-26 17:57:14,199 INFO ]: 0 new accepting states [2018-06-26 17:57:14,267 INFO ]: Removed 12 edges and 2 locations by large block encoding [2018-06-26 17:57:14,268 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:57:14,270 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:57:14,270 INFO ]: 0 new accepting states [2018-06-26 17:57:14,270 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:57:14,270 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:57:14,270 INFO ]: Encoded RCFG 8 locations, 20 edges [2018-06-26 17:57:14,271 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:57:14 BasicIcfg [2018-06-26 17:57:14,271 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:57:14,274 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:57:14,274 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:57:14,277 INFO ]: TraceAbstraction initialized [2018-06-26 17:57:14,277 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:57:13" (1/4) ... [2018-06-26 17:57:14,278 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5649cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:57:14, skipping insertion in model container [2018-06-26 17:57:14,278 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:57:13" (2/4) ... [2018-06-26 17:57:14,278 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5649cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:57:14, skipping insertion in model container [2018-06-26 17:57:14,278 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:57:14" (3/4) ... [2018-06-26 17:57:14,278 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5649cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:57:14, skipping insertion in model container [2018-06-26 17:57:14,278 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:57:14" (4/4) ... [2018-06-26 17:57:14,281 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:57:14,290 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:57:14,307 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:57:14,353 INFO ]: Using default assertion order modulation [2018-06-26 17:57:14,354 INFO ]: Interprodecural is true [2018-06-26 17:57:14,354 INFO ]: Hoare is false [2018-06-26 17:57:14,354 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:57:14,354 INFO ]: Backedges is TWOTRACK [2018-06-26 17:57:14,354 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:57:14,354 INFO ]: Difference is false [2018-06-26 17:57:14,354 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:57:14,354 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:57:14,368 INFO ]: Start isEmpty. Operand 8 states. [2018-06-26 17:57:14,392 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:57:14,392 INFO ]: Found error trace [2018-06-26 17:57:14,395 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:57:14,395 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:57:14,399 INFO ]: Analyzing trace with hash 47045647, now seen corresponding path program 1 times [2018-06-26 17:57:14,401 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:57:14,402 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:57:14,448 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:57:14,448 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:57:14,448 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:57:14,490 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:57:14,563 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:57:14,565 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:57:14,565 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:57:14,566 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:57:14,577 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:57:14,578 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:57:14,580 INFO ]: Start difference. First operand 8 states. Second operand 3 states. [2018-06-26 17:57:14,630 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:57:14,631 INFO ]: Finished difference Result 9 states and 21 transitions. [2018-06-26 17:57:14,631 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:57:14,632 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:57:14,632 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:57:14,644 INFO ]: With dead ends: 9 [2018-06-26 17:57:14,644 INFO ]: Without dead ends: 9 [2018-06-26 17:57:14,648 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 17:57:14,661 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-26 17:57:14,679 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-26 17:57:14,682 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:57:14,682 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 21 transitions. [2018-06-26 17:57:14,684 INFO ]: Start accepts. Automaton has 9 states and 21 transitions. Word has length 5 [2018-06-26 17:57:14,684 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:57:14,684 INFO ]: Abstraction has 9 states and 21 transitions. [2018-06-26 17:57:14,684 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:57:14,684 INFO ]: Start isEmpty. Operand 9 states and 21 transitions. [2018-06-26 17:57:14,684 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:57:14,684 INFO ]: Found error trace [2018-06-26 17:57:14,684 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:57:14,684 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:57:14,684 INFO ]: Analyzing trace with hash 47071594, now seen corresponding path program 1 times [2018-06-26 17:57:14,684 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:57:14,684 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:57:14,686 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:57:14,686 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:57:14,686 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:57:14,704 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:57:14,843 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:57:14,843 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:57:14,843 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:57:14,844 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:57:14,845 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:57:14,845 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:57:14,845 INFO ]: Start difference. First operand 9 states and 21 transitions. Second operand 3 states. [2018-06-26 17:57:15,042 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:57:15,042 INFO ]: Finished difference Result 13 states and 34 transitions. [2018-06-26 17:57:15,043 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:57:15,043 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:57:15,043 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:57:15,045 INFO ]: With dead ends: 13 [2018-06-26 17:57:15,045 INFO ]: Without dead ends: 13 [2018-06-26 17:57:15,046 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:57:15,046 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-26 17:57:15,049 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 10. [2018-06-26 17:57:15,049 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 17:57:15,049 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 27 transitions. [2018-06-26 17:57:15,049 INFO ]: Start accepts. Automaton has 10 states and 27 transitions. Word has length 5 [2018-06-26 17:57:15,050 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:57:15,050 INFO ]: Abstraction has 10 states and 27 transitions. [2018-06-26 17:57:15,050 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:57:15,050 INFO ]: Start isEmpty. Operand 10 states and 27 transitions. [2018-06-26 17:57:15,051 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:57:15,051 INFO ]: Found error trace [2018-06-26 17:57:15,052 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:57:15,052 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:57:15,053 INFO ]: Analyzing trace with hash 47072555, now seen corresponding path program 1 times [2018-06-26 17:57:15,053 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:57:15,053 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:57:15,053 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:57:15,053 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:57:15,054 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:57:15,066 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:57:15,096 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:57:15,096 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:57:15,096 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:57:15,097 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:57:15,097 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:57:15,097 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:57:15,097 INFO ]: Start difference. First operand 10 states and 27 transitions. Second operand 3 states. [2018-06-26 17:57:15,222 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:57:15,222 INFO ]: Finished difference Result 12 states and 28 transitions. [2018-06-26 17:57:15,222 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:57:15,223 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:57:15,223 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:57:15,223 INFO ]: With dead ends: 12 [2018-06-26 17:57:15,223 INFO ]: Without dead ends: 12 [2018-06-26 17:57:15,223 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 17:57:15,223 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-26 17:57:15,225 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-06-26 17:57:15,225 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 17:57:15,226 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 25 transitions. [2018-06-26 17:57:15,226 INFO ]: Start accepts. Automaton has 10 states and 25 transitions. Word has length 5 [2018-06-26 17:57:15,226 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:57:15,226 INFO ]: Abstraction has 10 states and 25 transitions. [2018-06-26 17:57:15,226 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:57:15,226 INFO ]: Start isEmpty. Operand 10 states and 25 transitions. [2018-06-26 17:57:15,227 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:57:15,227 INFO ]: Found error trace [2018-06-26 17:57:15,227 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:57:15,227 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:57:15,227 INFO ]: Analyzing trace with hash 47105229, now seen corresponding path program 1 times [2018-06-26 17:57:15,227 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:57:15,227 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:57:15,228 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:57:15,228 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:57:15,228 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:57:15,237 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:57:15,297 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:57:15,297 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:57:15,297 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:57:15,297 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:57:15,298 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:57:15,298 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:57:15,298 INFO ]: Start difference. First operand 10 states and 25 transitions. Second operand 3 states. [2018-06-26 17:57:15,368 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:57:15,368 INFO ]: Finished difference Result 11 states and 26 transitions. [2018-06-26 17:57:15,368 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:57:15,368 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:57:15,368 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:57:15,369 INFO ]: With dead ends: 11 [2018-06-26 17:57:15,369 INFO ]: Without dead ends: 11 [2018-06-26 17:57:15,369 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 17:57:15,369 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-26 17:57:15,371 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-06-26 17:57:15,371 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 17:57:15,371 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 25 transitions. [2018-06-26 17:57:15,371 INFO ]: Start accepts. Automaton has 10 states and 25 transitions. Word has length 5 [2018-06-26 17:57:15,371 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:57:15,371 INFO ]: Abstraction has 10 states and 25 transitions. [2018-06-26 17:57:15,371 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:57:15,372 INFO ]: Start isEmpty. Operand 10 states and 25 transitions. [2018-06-26 17:57:15,372 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:57:15,372 INFO ]: Found error trace [2018-06-26 17:57:15,372 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:57:15,372 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:57:15,372 INFO ]: Analyzing trace with hash 1457381378, now seen corresponding path program 1 times [2018-06-26 17:57:15,372 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:57:15,372 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:57:15,373 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:57:15,373 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:57:15,373 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:57:15,384 INFO ]: Conjunction of SSA is sat [2018-06-26 17:57:15,386 INFO ]: Counterexample might be feasible [2018-06-26 17:57:15,399 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:57:15,400 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:57:15 BasicIcfg [2018-06-26 17:57:15,401 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:57:15,401 INFO ]: Toolchain (without parser) took 1783.18 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 212.5 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 3.6 GB. [2018-06-26 17:57:15,404 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:57:15,404 INFO ]: ChcToBoogie took 59.28 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:57:15,405 INFO ]: Boogie Preprocessor took 49.35 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 259.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-26 17:57:15,405 INFO ]: RCFGBuilder took 423.49 ms. Allocated memory is still 309.3 MB. Free memory was 258.6 MB in the beginning and 246.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:57:15,406 INFO ]: BlockEncodingV2 took 104.15 ms. Allocated memory is still 309.3 MB. Free memory was 246.6 MB in the beginning and 241.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:57:15,407 INFO ]: TraceAbstraction took 1126.89 ms. Allocated memory is still 309.3 MB. Free memory was 241.6 MB in the beginning and 212.5 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 3.6 GB. [2018-06-26 17:57:15,411 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 12 locations, 28 edges - StatisticsResult: Encoded RCFG 8 locations, 20 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 59.28 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 49.35 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 259.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 423.49 ms. Allocated memory is still 309.3 MB. Free memory was 258.6 MB in the beginning and 246.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 104.15 ms. Allocated memory is still 309.3 MB. Free memory was 246.6 MB in the beginning and 241.6 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1126.89 ms. Allocated memory is still 309.3 MB. Free memory was 241.6 MB in the beginning and 212.5 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 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); [L0] assume (((((((!(hbv_False_2_Int == 0) && hbv_False_1_Int + -2 == 0) && hbv_False_2_Int + -1 == hbv_False_5_Int) && hbv_False_3_Int == hbv_False_6_Int) && !(hbv_False_7_Int == hbv_False_6_Int)) && !(hbv_False_1_Int == 0)) && hbv_False_2_Int == hbv_False_1_Int) && hbv_False_3_Int + 1 == hbv_False_4_Int) && !(hbv_False_1_Int + -1 == 0); [L0] hhv_REC_f__0_Int, hhv_REC_f__1_Int, hhv_REC_f__2_Int := hbv_False_5_Int, hbv_False_4_Int, hbv_False_7_Int; [L0] havoc hbv_False_1_Int, hbv_False_4_Int, hbv_False_6_Int, hbv_False_7_Int, hbv_False_2_Int, hbv_False_3_Int, hbv_False_5_Int; [L0] assume (!(hhv_REC_f__0_Int == 0) && hhv_REC_f__0_Int + -1 == hbv_REC_f__1_Int) && hhv_REC_f__1_Int + 1 == hbv_REC_f__2_Int; [L0] hhv_REC_f__0_Int, hhv_REC_f__1_Int, hhv_REC_f__2_Int := hbv_REC_f__1_Int, hbv_REC_f__2_Int, hhv_REC_f__2_Int; [L0] havoc hbv_REC_f__2_Int, hbv_REC_f__1_Int; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 8 locations, 1 error locations. UNSAFE Result, 1.0s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 16 SDslu, 49 SDs, 0 SdLazy, 34 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 124 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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/002c-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-57-15-425.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/002c-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-57-15-425.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/002c-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-57-15-425.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/002c-horn.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-57-15-425.csv Received shutdown request...