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/hopv/lia/mochi/enc-zip4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:29:53,195 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:29:53,198 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:29:53,211 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:29:53,211 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:29:53,212 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:29:53,213 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:29:53,216 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:29:53,218 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:29:53,220 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:29:53,221 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:29:53,221 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:29:53,222 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:29:53,223 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:29:53,223 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:29:53,227 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:29:53,229 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:29:53,240 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:29:53,241 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:29:53,242 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:29:53,243 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:29:53,245 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:29:53,246 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:29:53,249 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:29:53,252 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:29:53,253 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:29:53,254 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:29:53,256 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:29:53,257 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:29:53,257 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:29:53,258 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:29:53,259 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:29:53,259 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:29:53,260 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:29:53,266 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:29:53,266 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 11:29:53,285 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:29:53,286 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:29:53,286 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:29:53,286 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:29:53,287 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:29:53,287 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:29:53,287 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:29:53,288 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:29:53,288 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:29:53,288 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:29:53,288 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:29:53,288 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:29:53,289 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:29:53,292 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:29:53,292 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:29:53,293 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:29:53,293 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:29:53,293 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:29:53,293 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:29:53,295 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:29:53,295 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:29:53,340 INFO ]: Repository-Root is: /tmp [2018-06-22 11:29:53,355 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:29:53,358 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:29:53,360 INFO ]: Initializing SmtParser... [2018-06-22 11:29:53,360 INFO ]: SmtParser initialized [2018-06-22 11:29:53,361 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/enc-zip4.smt2 [2018-06-22 11:29:53,362 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 11:29:53,459 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/enc-zip4.smt2 unknown [2018-06-22 11:29:53,663 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/enc-zip4.smt2 [2018-06-22 11:29:53,669 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:29:53,676 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:29:53,676 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:29:53,676 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:29:53,676 INFO ]: ChcToBoogie initialized [2018-06-22 11:29:53,680 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:29:53" (1/1) ... [2018-06-22 11:29:53,726 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:53 Unit [2018-06-22 11:29:53,726 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:29:53,727 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:29:53,727 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:29:53,727 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:29:53,752 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:53" (1/1) ... [2018-06-22 11:29:53,753 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:53" (1/1) ... [2018-06-22 11:29:53,760 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:53" (1/1) ... [2018-06-22 11:29:53,760 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:53" (1/1) ... [2018-06-22 11:29:53,763 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:53" (1/1) ... [2018-06-22 11:29:53,766 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:53" (1/1) ... [2018-06-22 11:29:53,767 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:53" (1/1) ... [2018-06-22 11:29:53,770 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:29:53,771 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:29:53,771 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:29:53,771 INFO ]: RCFGBuilder initialized [2018-06-22 11:29:53,772 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:53" (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 11:29:53,785 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:29:53,785 INFO ]: Found specification of procedure False [2018-06-22 11:29:53,785 INFO ]: Found implementation of procedure False [2018-06-22 11:29:53,785 INFO ]: Specification and implementation of procedure zipDLRunknownCLN3 given in one single declaration [2018-06-22 11:29:53,785 INFO ]: Found specification of procedure zipDLRunknownCLN3 [2018-06-22 11:29:53,785 INFO ]: Found implementation of procedure zipDLRunknownCLN3 [2018-06-22 11:29:53,785 INFO ]: Specification and implementation of procedure zipDLRunknownCLN2 given in one single declaration [2018-06-22 11:29:53,785 INFO ]: Found specification of procedure zipDLRunknownCLN2 [2018-06-22 11:29:53,785 INFO ]: Found implementation of procedure zipDLRunknownCLN2 [2018-06-22 11:29:53,785 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:29:53,785 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:29:53,785 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 11:29:54,052 INFO ]: Using library mode [2018-06-22 11:29:54,053 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:29:54 BoogieIcfgContainer [2018-06-22 11:29:54,053 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:29:54,061 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:29:54,061 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:29:54,064 INFO ]: TraceAbstraction initialized [2018-06-22 11:29:54,064 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:29:53" (1/3) ... [2018-06-22 11:29:54,065 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438066d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:29:54, skipping insertion in model container [2018-06-22 11:29:54,065 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:53" (2/3) ... [2018-06-22 11:29:54,065 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@438066d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:29:54, skipping insertion in model container [2018-06-22 11:29:54,065 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:29:54" (3/3) ... [2018-06-22 11:29:54,076 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:29:54,085 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:29:54,092 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:29:54,131 INFO ]: Using default assertion order modulation [2018-06-22 11:29:54,131 INFO ]: Interprodecural is true [2018-06-22 11:29:54,131 INFO ]: Hoare is false [2018-06-22 11:29:54,132 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:29:54,132 INFO ]: Backedges is TWOTRACK [2018-06-22 11:29:54,132 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:29:54,132 INFO ]: Difference is false [2018-06-22 11:29:54,132 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:29:54,132 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:29:54,146 INFO ]: Start isEmpty. Operand 21 states. [2018-06-22 11:29:54,158 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:29:54,158 INFO ]: Found error trace [2018-06-22 11:29:54,159 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:29:54,159 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:54,163 INFO ]: Analyzing trace with hash 77678331, now seen corresponding path program 1 times [2018-06-22 11:29:54,164 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:54,164 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:54,199 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:54,200 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:54,200 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:54,215 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:54,236 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:29:54,238 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:29:54,238 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:29:54,240 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:29:54,250 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:29:54,251 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:29:54,253 INFO ]: Start difference. First operand 21 states. Second operand 2 states. [2018-06-22 11:29:54,280 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:54,280 INFO ]: Finished difference Result 19 states and 27 transitions. [2018-06-22 11:29:54,280 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:29:54,281 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:29:54,282 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:54,304 INFO ]: With dead ends: 19 [2018-06-22 11:29:54,304 INFO ]: Without dead ends: 19 [2018-06-22 11:29:54,305 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:29:54,321 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:29:54,341 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 11:29:54,342 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:29:54,343 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2018-06-22 11:29:54,344 INFO ]: Start accepts. Automaton has 19 states and 27 transitions. Word has length 5 [2018-06-22 11:29:54,344 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:54,344 INFO ]: Abstraction has 19 states and 27 transitions. [2018-06-22 11:29:54,344 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:29:54,345 INFO ]: Start isEmpty. Operand 19 states and 27 transitions. [2018-06-22 11:29:54,347 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:29:54,347 INFO ]: Found error trace [2018-06-22 11:29:54,347 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:54,347 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:54,347 INFO ]: Analyzing trace with hash 1385088597, now seen corresponding path program 1 times [2018-06-22 11:29:54,347 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:54,347 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:54,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:54,348 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:54,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:54,373 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:54,517 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-06-22 11:29:54,527 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:29:54,527 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:29:54,527 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:29:54,529 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:29:54,529 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:29:54,529 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:29:54,529 INFO ]: Start difference. First operand 19 states and 27 transitions. Second operand 4 states. [2018-06-22 11:29:54,813 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:54,813 INFO ]: Finished difference Result 23 states and 33 transitions. [2018-06-22 11:29:54,814 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:29:54,814 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:29:54,814 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:54,815 INFO ]: With dead ends: 23 [2018-06-22 11:29:54,815 INFO ]: Without dead ends: 23 [2018-06-22 11:29:54,815 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:29:54,816 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 11:29:54,827 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 21. [2018-06-22 11:29:54,827 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 11:29:54,828 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 31 transitions. [2018-06-22 11:29:54,828 INFO ]: Start accepts. Automaton has 21 states and 31 transitions. Word has length 9 [2018-06-22 11:29:54,830 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:54,830 INFO ]: Abstraction has 21 states and 31 transitions. [2018-06-22 11:29:54,831 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:29:54,831 INFO ]: Start isEmpty. Operand 21 states and 31 transitions. [2018-06-22 11:29:54,832 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:29:54,832 INFO ]: Found error trace [2018-06-22 11:29:54,832 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:54,832 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:54,832 INFO ]: Analyzing trace with hash -45555938, now seen corresponding path program 1 times [2018-06-22 11:29:54,832 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:54,832 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:54,833 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:54,833 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:54,833 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:54,846 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:55,092 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:29:55,092 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:29:55,093 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:29:55,093 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:29:55,093 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:29:55,093 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:29:55,093 INFO ]: Start difference. First operand 21 states and 31 transitions. Second operand 4 states. [2018-06-22 11:29:55,155 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:55,155 INFO ]: Finished difference Result 23 states and 33 transitions. [2018-06-22 11:29:55,156 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:29:55,156 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 11:29:55,156 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:55,157 INFO ]: With dead ends: 23 [2018-06-22 11:29:55,157 INFO ]: Without dead ends: 23 [2018-06-22 11:29:55,157 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:29:55,157 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 11:29:55,162 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 11:29:55,162 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 11:29:55,164 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 33 transitions. [2018-06-22 11:29:55,164 INFO ]: Start accepts. Automaton has 23 states and 33 transitions. Word has length 13 [2018-06-22 11:29:55,164 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:55,164 INFO ]: Abstraction has 23 states and 33 transitions. [2018-06-22 11:29:55,164 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:29:55,164 INFO ]: Start isEmpty. Operand 23 states and 33 transitions. [2018-06-22 11:29:55,165 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:29:55,165 INFO ]: Found error trace [2018-06-22 11:29:55,165 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:55,165 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:55,165 INFO ]: Analyzing trace with hash -1082868411, now seen corresponding path program 1 times [2018-06-22 11:29:55,165 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:55,165 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:55,166 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:55,166 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:55,166 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:55,175 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:55,381 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2018-06-22 11:29:55,654 INFO ]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:29:55,654 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:29:55,654 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:29:55,654 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:29:55,654 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:29:55,654 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:29:55,655 INFO ]: Start difference. First operand 23 states and 33 transitions. Second operand 5 states. [2018-06-22 11:29:55,937 WARN ]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 11:29:56,050 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:56,050 INFO ]: Finished difference Result 23 states and 31 transitions. [2018-06-22 11:29:56,051 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:29:56,051 INFO ]: Start accepts. Automaton has 5 states. Word has length 13 [2018-06-22 11:29:56,051 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:56,052 INFO ]: With dead ends: 23 [2018-06-22 11:29:56,052 INFO ]: Without dead ends: 21 [2018-06-22 11:29:56,052 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:29:56,052 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 11:29:56,056 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 19. [2018-06-22 11:29:56,056 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:29:56,057 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2018-06-22 11:29:56,057 INFO ]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2018-06-22 11:29:56,057 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:56,057 INFO ]: Abstraction has 19 states and 23 transitions. [2018-06-22 11:29:56,057 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:29:56,057 INFO ]: Start isEmpty. Operand 19 states and 23 transitions. [2018-06-22 11:29:56,058 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:29:56,058 INFO ]: Found error trace [2018-06-22 11:29:56,058 INFO ]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:56,058 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:56,058 INFO ]: Analyzing trace with hash 1653164642, now seen corresponding path program 1 times [2018-06-22 11:29:56,058 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:56,058 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:56,059 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:56,059 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:56,059 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:56,093 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:56,185 INFO ]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:29:56,185 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:29:56,185 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:29:56,185 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:29:56,185 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:29:56,185 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:29:56,186 INFO ]: Start difference. First operand 19 states and 23 transitions. Second operand 5 states. [2018-06-22 11:29:56,238 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:56,238 INFO ]: Finished difference Result 15 states and 19 transitions. [2018-06-22 11:29:56,239 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:29:56,239 INFO ]: Start accepts. Automaton has 5 states. Word has length 21 [2018-06-22 11:29:56,239 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:56,239 INFO ]: With dead ends: 15 [2018-06-22 11:29:56,239 INFO ]: Without dead ends: 0 [2018-06-22 11:29:56,240 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:29:56,240 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:29:56,240 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:29:56,240 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:29:56,240 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:29:56,240 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 11:29:56,240 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:56,240 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:29:56,240 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:29:56,240 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:29:56,240 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:29:56,245 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:29:56 BoogieIcfgContainer [2018-06-22 11:29:56,245 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:29:56,246 INFO ]: Toolchain (without parser) took 2575.78 ms. Allocated memory is still 306.2 MB. Free memory was 262.6 MB in the beginning and 190.9 MB in the end (delta: 71.6 MB). Peak memory consumption was 71.6 MB. Max. memory is 3.6 GB. [2018-06-22 11:29:56,247 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:29:56,247 INFO ]: ChcToBoogie took 50.44 ms. Allocated memory is still 306.2 MB. Free memory was 261.6 MB in the beginning and 259.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:29:56,248 INFO ]: Boogie Preprocessor took 43.68 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 258.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:29:56,248 INFO ]: RCFGBuilder took 282.15 ms. Allocated memory is still 306.2 MB. Free memory was 258.6 MB in the beginning and 249.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:29:56,249 INFO ]: TraceAbstraction took 2184.27 ms. Allocated memory is still 306.2 MB. Free memory was 249.6 MB in the beginning and 190.9 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 3.6 GB. [2018-06-22 11:29:56,252 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 306.2 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 50.44 ms. Allocated memory is still 306.2 MB. Free memory was 261.6 MB in the beginning and 259.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 43.68 ms. Allocated memory is still 306.2 MB. Free memory was 259.6 MB in the beginning and 258.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 282.15 ms. Allocated memory is still 306.2 MB. Free memory was 258.6 MB in the beginning and 249.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2184.27 ms. Allocated memory is still 306.2 MB. Free memory was 249.6 MB in the beginning and 190.9 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 119 SDtfs, 4 SDslu, 161 SDs, 0 SdLazy, 68 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 3256 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 9/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-zip4.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-29-56-263.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/enc-zip4.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-29-56-263.csv Received shutdown request...