java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/001d-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:07:37,097 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:07:37,099 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:07:37,117 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:07:37,117 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:07:37,118 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:07:37,119 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:07:37,122 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:07:37,123 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:07:37,125 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:07:37,126 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:07:37,126 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:07:37,127 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:07:37,128 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:07:37,132 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:07:37,133 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:07:37,146 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:07:37,148 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:07:37,150 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:07:37,151 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:07:37,152 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:07:37,155 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:07:37,155 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:07:37,155 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:07:37,156 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:07:37,157 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:07:37,158 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:07:37,159 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:07:37,160 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:07:37,160 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:07:37,161 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:07:37,162 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:07:37,162 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:07:37,163 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:07:37,163 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:07:37,163 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 11:07:37,186 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:07:37,187 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:07:37,189 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:07:37,189 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:07:37,190 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:07:37,190 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:07:37,191 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:07:37,191 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:07:37,191 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:07:37,191 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:07:37,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:07:37,192 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:07:37,192 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:07:37,193 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:07:37,193 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:07:37,193 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:07:37,193 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:07:37,193 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:07:37,194 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:07:37,195 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:07:37,195 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:07:37,245 INFO ]: Repository-Root is: /tmp [2018-06-22 11:07:37,262 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:07:37,267 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:07:37,268 INFO ]: Initializing SmtParser... [2018-06-22 11:07:37,268 INFO ]: SmtParser initialized [2018-06-22 11:07:37,269 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/001d-horn.smt2 [2018-06-22 11:07:37,271 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 11:07:37,361 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/001d-horn.smt2 unknown [2018-06-22 11:07:37,742 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/001d-horn.smt2 [2018-06-22 11:07:37,751 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:07:37,779 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:07:37,780 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:07:37,780 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:07:37,780 INFO ]: ChcToBoogie initialized [2018-06-22 11:07:37,791 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:07:37" (1/1) ... [2018-06-22 11:07:37,891 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:07:37 Unit [2018-06-22 11:07:37,891 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:07:37,894 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:07:37,894 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:07:37,894 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:07:37,919 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:07:37" (1/1) ... [2018-06-22 11:07:37,919 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:07:37" (1/1) ... [2018-06-22 11:07:37,937 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:07:37" (1/1) ... [2018-06-22 11:07:37,937 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:07:37" (1/1) ... [2018-06-22 11:07:37,958 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:07:37" (1/1) ... [2018-06-22 11:07:37,962 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:07:37" (1/1) ... [2018-06-22 11:07:37,965 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:07:37" (1/1) ... [2018-06-22 11:07:37,967 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:07:37,968 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:07:37,968 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:07:37,968 INFO ]: RCFGBuilder initialized [2018-06-22 11:07:37,973 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:07:37" (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 11:07:37,998 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:07:37,998 INFO ]: Found specification of procedure False [2018-06-22 11:07:37,998 INFO ]: Found implementation of procedure False [2018-06-22 11:07:37,998 INFO ]: Specification and implementation of procedure REC_f_ given in one single declaration [2018-06-22 11:07:37,998 INFO ]: Found specification of procedure REC_f_ [2018-06-22 11:07:37,998 INFO ]: Found implementation of procedure REC_f_ [2018-06-22 11:07:37,998 INFO ]: Specification and implementation of procedure REC__f given in one single declaration [2018-06-22 11:07:37,999 INFO ]: Found specification of procedure REC__f [2018-06-22 11:07:37,999 INFO ]: Found implementation of procedure REC__f [2018-06-22 11:07:37,999 INFO ]: Specification and implementation of procedure REC_f_f given in one single declaration [2018-06-22 11:07:37,999 INFO ]: Found specification of procedure REC_f_f [2018-06-22 11:07:37,999 INFO ]: Found implementation of procedure REC_f_f [2018-06-22 11:07:37,999 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:07:37,999 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:07:37,999 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 11:07:39,017 INFO ]: Using library mode [2018-06-22 11:07:39,018 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:07:39 BoogieIcfgContainer [2018-06-22 11:07:39,018 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:07:39,019 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:07:39,019 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:07:39,022 INFO ]: TraceAbstraction initialized [2018-06-22 11:07:39,023 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:07:37" (1/3) ... [2018-06-22 11:07:39,024 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b1a753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:07:39, skipping insertion in model container [2018-06-22 11:07:39,024 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:07:37" (2/3) ... [2018-06-22 11:07:39,024 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b1a753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:07:39, skipping insertion in model container [2018-06-22 11:07:39,024 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:07:39" (3/3) ... [2018-06-22 11:07:39,026 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:07:39,037 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:07:39,046 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:07:39,093 INFO ]: Using default assertion order modulation [2018-06-22 11:07:39,093 INFO ]: Interprodecural is true [2018-06-22 11:07:39,093 INFO ]: Hoare is false [2018-06-22 11:07:39,093 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:07:39,093 INFO ]: Backedges is TWOTRACK [2018-06-22 11:07:39,093 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:07:39,093 INFO ]: Difference is false [2018-06-22 11:07:39,093 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:07:39,093 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:07:39,111 INFO ]: Start isEmpty. Operand 91 states. [2018-06-22 11:07:39,139 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:07:39,139 INFO ]: Found error trace [2018-06-22 11:07:39,140 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:07:39,141 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:39,146 INFO ]: Analyzing trace with hash 350648014, now seen corresponding path program 1 times [2018-06-22 11:07:39,148 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:39,148 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:39,184 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:39,185 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:39,185 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:39,198 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:39,224 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:07:39,226 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:07:39,226 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:07:39,228 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:07:39,245 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:07:39,245 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:07:39,249 INFO ]: Start difference. First operand 91 states. Second operand 2 states. [2018-06-22 11:07:39,300 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:39,300 INFO ]: Finished difference Result 67 states and 143 transitions. [2018-06-22 11:07:39,300 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:07:39,302 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:07:39,302 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:39,320 INFO ]: With dead ends: 67 [2018-06-22 11:07:39,320 INFO ]: Without dead ends: 67 [2018-06-22 11:07:39,321 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 11:07:39,336 INFO ]: Start minimizeSevpa. Operand 67 states. [2018-06-22 11:07:39,385 INFO ]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-06-22 11:07:39,387 INFO ]: Start removeUnreachable. Operand 67 states. [2018-06-22 11:07:39,396 INFO ]: Finished removeUnreachable. Reduced from 67 states to 67 states and 143 transitions. [2018-06-22 11:07:39,397 INFO ]: Start accepts. Automaton has 67 states and 143 transitions. Word has length 5 [2018-06-22 11:07:39,398 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:39,398 INFO ]: Abstraction has 67 states and 143 transitions. [2018-06-22 11:07:39,398 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:07:39,399 INFO ]: Start isEmpty. Operand 67 states and 143 transitions. [2018-06-22 11:07:39,412 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:07:39,413 INFO ]: Found error trace [2018-06-22 11:07:39,413 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:39,413 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:39,413 INFO ]: Analyzing trace with hash 548122395, now seen corresponding path program 1 times [2018-06-22 11:07:39,413 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:39,413 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:39,414 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:39,414 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:39,414 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:39,450 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:39,496 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:07:39,496 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:07:39,496 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:07:39,498 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:07:39,498 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:07:39,498 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:07:39,498 INFO ]: Start difference. First operand 67 states and 143 transitions. Second operand 4 states. [2018-06-22 11:07:40,252 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:40,252 INFO ]: Finished difference Result 71 states and 167 transitions. [2018-06-22 11:07:40,254 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:07:40,254 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:07:40,254 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:40,259 INFO ]: With dead ends: 71 [2018-06-22 11:07:40,259 INFO ]: Without dead ends: 71 [2018-06-22 11:07:40,260 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:07:40,260 INFO ]: Start minimizeSevpa. Operand 71 states. [2018-06-22 11:07:40,286 INFO ]: Finished minimizeSevpa. Reduced states from 71 to 69. [2018-06-22 11:07:40,286 INFO ]: Start removeUnreachable. Operand 69 states. [2018-06-22 11:07:40,292 INFO ]: Finished removeUnreachable. Reduced from 69 states to 69 states and 165 transitions. [2018-06-22 11:07:40,292 INFO ]: Start accepts. Automaton has 69 states and 165 transitions. Word has length 9 [2018-06-22 11:07:40,292 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:40,292 INFO ]: Abstraction has 69 states and 165 transitions. [2018-06-22 11:07:40,292 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:07:40,292 INFO ]: Start isEmpty. Operand 69 states and 165 transitions. [2018-06-22 11:07:40,298 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:07:40,298 INFO ]: Found error trace [2018-06-22 11:07:40,298 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:40,299 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:40,299 INFO ]: Analyzing trace with hash -1116075058, now seen corresponding path program 1 times [2018-06-22 11:07:40,300 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:40,300 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:40,300 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:40,300 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:40,300 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:40,316 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:40,365 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:07:40,366 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:07:40,366 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:07:40,366 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:07:40,366 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:07:40,366 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:07:40,366 INFO ]: Start difference. First operand 69 states and 165 transitions. Second operand 4 states. [2018-06-22 11:07:41,108 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:41,108 INFO ]: Finished difference Result 73 states and 189 transitions. [2018-06-22 11:07:41,170 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:07:41,170 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 11:07:41,171 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:41,174 INFO ]: With dead ends: 73 [2018-06-22 11:07:41,174 INFO ]: Without dead ends: 73 [2018-06-22 11:07:41,174 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:07:41,174 INFO ]: Start minimizeSevpa. Operand 73 states. [2018-06-22 11:07:41,191 INFO ]: Finished minimizeSevpa. Reduced states from 73 to 71. [2018-06-22 11:07:41,191 INFO ]: Start removeUnreachable. Operand 71 states. [2018-06-22 11:07:41,199 INFO ]: Finished removeUnreachable. Reduced from 71 states to 71 states and 187 transitions. [2018-06-22 11:07:41,199 INFO ]: Start accepts. Automaton has 71 states and 187 transitions. Word has length 13 [2018-06-22 11:07:41,199 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:41,199 INFO ]: Abstraction has 71 states and 187 transitions. [2018-06-22 11:07:41,199 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:07:41,199 INFO ]: Start isEmpty. Operand 71 states and 187 transitions. [2018-06-22 11:07:41,205 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:07:41,205 INFO ]: Found error trace [2018-06-22 11:07:41,205 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:41,205 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:41,205 INFO ]: Analyzing trace with hash -1159657381, now seen corresponding path program 1 times [2018-06-22 11:07:41,205 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:41,205 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:41,206 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:41,206 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:41,206 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:41,217 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:41,497 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:07:41,497 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:41,497 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:41,508 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:41,533 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:41,540 INFO ]: Computing forward predicates... [2018-06-22 11:07:41,738 INFO ]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:07:41,774 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:07:41,774 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2018-06-22 11:07:41,774 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:07:41,774 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:07:41,774 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:07:41,774 INFO ]: Start difference. First operand 71 states and 187 transitions. Second operand 8 states. [2018-06-22 11:07:43,251 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:43,251 INFO ]: Finished difference Result 128 states and 607 transitions. [2018-06-22 11:07:43,252 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:07:43,252 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 11:07:43,252 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:43,260 INFO ]: With dead ends: 128 [2018-06-22 11:07:43,260 INFO ]: Without dead ends: 126 [2018-06-22 11:07:43,260 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:07:43,260 INFO ]: Start minimizeSevpa. Operand 126 states. [2018-06-22 11:07:43,326 INFO ]: Finished minimizeSevpa. Reduced states from 126 to 122. [2018-06-22 11:07:43,326 INFO ]: Start removeUnreachable. Operand 122 states. [2018-06-22 11:07:43,333 INFO ]: Finished removeUnreachable. Reduced from 122 states to 122 states and 586 transitions. [2018-06-22 11:07:43,333 INFO ]: Start accepts. Automaton has 122 states and 586 transitions. Word has length 13 [2018-06-22 11:07:43,333 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:43,333 INFO ]: Abstraction has 122 states and 586 transitions. [2018-06-22 11:07:43,333 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:07:43,333 INFO ]: Start isEmpty. Operand 122 states and 586 transitions. [2018-06-22 11:07:43,340 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:07:43,340 INFO ]: Found error trace [2018-06-22 11:07:43,340 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:43,340 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:43,340 INFO ]: Analyzing trace with hash -383963793, now seen corresponding path program 1 times [2018-06-22 11:07:43,340 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:43,340 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:43,341 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:43,341 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:43,341 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:43,352 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:43,433 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:07:43,433 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:07:43,433 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:07:43,433 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:07:43,433 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:07:43,433 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:07:43,433 INFO ]: Start difference. First operand 122 states and 586 transitions. Second operand 4 states. [2018-06-22 11:07:43,520 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:43,520 INFO ]: Finished difference Result 124 states and 586 transitions. [2018-06-22 11:07:43,520 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:07:43,521 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 11:07:43,521 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:43,526 INFO ]: With dead ends: 124 [2018-06-22 11:07:43,526 INFO ]: Without dead ends: 120 [2018-06-22 11:07:43,526 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:07:43,527 INFO ]: Start minimizeSevpa. Operand 120 states. [2018-06-22 11:07:43,562 INFO ]: Finished minimizeSevpa. Reduced states from 120 to 118. [2018-06-22 11:07:43,562 INFO ]: Start removeUnreachable. Operand 118 states. [2018-06-22 11:07:43,566 INFO ]: Finished removeUnreachable. Reduced from 118 states to 118 states and 576 transitions. [2018-06-22 11:07:43,570 INFO ]: Start accepts. Automaton has 118 states and 576 transitions. Word has length 13 [2018-06-22 11:07:43,570 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:43,570 INFO ]: Abstraction has 118 states and 576 transitions. [2018-06-22 11:07:43,570 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:07:43,570 INFO ]: Start isEmpty. Operand 118 states and 576 transitions. [2018-06-22 11:07:43,578 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:07:43,578 INFO ]: Found error trace [2018-06-22 11:07:43,578 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:43,578 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:43,578 INFO ]: Analyzing trace with hash -1835464017, now seen corresponding path program 1 times [2018-06-22 11:07:43,578 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:43,578 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:43,580 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:43,580 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:43,580 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:43,589 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:43,719 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:07:43,719 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:43,719 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:43,725 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:43,735 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:43,736 INFO ]: Computing forward predicates... [2018-06-22 11:07:43,748 INFO ]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:07:43,774 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:07:43,774 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2018-06-22 11:07:43,774 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:07:43,774 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:07:43,774 INFO ]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:07:43,774 INFO ]: Start difference. First operand 118 states and 576 transitions. Second operand 7 states. [2018-06-22 11:07:44,840 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:44,840 INFO ]: Finished difference Result 130 states and 613 transitions. [2018-06-22 11:07:44,841 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:07:44,841 INFO ]: Start accepts. Automaton has 7 states. Word has length 13 [2018-06-22 11:07:44,841 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:44,845 INFO ]: With dead ends: 130 [2018-06-22 11:07:44,845 INFO ]: Without dead ends: 130 [2018-06-22 11:07:44,846 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:07:44,846 INFO ]: Start minimizeSevpa. Operand 130 states. [2018-06-22 11:07:44,892 INFO ]: Finished minimizeSevpa. Reduced states from 130 to 126. [2018-06-22 11:07:44,892 INFO ]: Start removeUnreachable. Operand 126 states. [2018-06-22 11:07:44,895 INFO ]: Finished removeUnreachable. Reduced from 126 states to 126 states and 608 transitions. [2018-06-22 11:07:44,895 INFO ]: Start accepts. Automaton has 126 states and 608 transitions. Word has length 13 [2018-06-22 11:07:44,895 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:44,895 INFO ]: Abstraction has 126 states and 608 transitions. [2018-06-22 11:07:44,895 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:07:44,895 INFO ]: Start isEmpty. Operand 126 states and 608 transitions. [2018-06-22 11:07:44,903 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:07:44,903 INFO ]: Found error trace [2018-06-22 11:07:44,903 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:44,903 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:44,903 INFO ]: Analyzing trace with hash 184405732, now seen corresponding path program 1 times [2018-06-22 11:07:44,903 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:44,903 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:44,904 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:44,904 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:44,904 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:44,910 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:45,047 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:07:45,047 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:07:45,047 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:07:45,047 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:07:45,047 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:07:45,047 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:07:45,048 INFO ]: Start difference. First operand 126 states and 608 transitions. Second operand 4 states. [2018-06-22 11:07:45,241 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:45,241 INFO ]: Finished difference Result 144 states and 770 transitions. [2018-06-22 11:07:45,242 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:07:45,242 INFO ]: Start accepts. Automaton has 4 states. Word has length 17 [2018-06-22 11:07:45,243 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:45,253 INFO ]: With dead ends: 144 [2018-06-22 11:07:45,253 INFO ]: Without dead ends: 144 [2018-06-22 11:07:45,254 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 11:07:45,254 INFO ]: Start minimizeSevpa. Operand 144 states. [2018-06-22 11:07:45,304 INFO ]: Finished minimizeSevpa. Reduced states from 144 to 134. [2018-06-22 11:07:45,304 INFO ]: Start removeUnreachable. Operand 134 states. [2018-06-22 11:07:45,312 INFO ]: Finished removeUnreachable. Reduced from 134 states to 134 states and 661 transitions. [2018-06-22 11:07:45,312 INFO ]: Start accepts. Automaton has 134 states and 661 transitions. Word has length 17 [2018-06-22 11:07:45,312 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:45,312 INFO ]: Abstraction has 134 states and 661 transitions. [2018-06-22 11:07:45,312 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:07:45,313 INFO ]: Start isEmpty. Operand 134 states and 661 transitions. [2018-06-22 11:07:45,327 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:07:45,327 INFO ]: Found error trace [2018-06-22 11:07:45,327 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:45,328 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:45,328 INFO ]: Analyzing trace with hash 371100427, now seen corresponding path program 1 times [2018-06-22 11:07:45,328 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:45,328 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:45,329 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:45,329 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:45,329 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:45,349 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:45,722 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:07:45,722 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:45,722 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 11:07:45,740 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:45,767 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:45,771 INFO ]: Computing forward predicates... [2018-06-22 11:07:46,008 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:07:46,029 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:07:46,029 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 11:07:46,029 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:07:46,029 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:07:46,029 INFO ]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:07:46,029 INFO ]: Start difference. First operand 134 states and 661 transitions. Second operand 9 states. [2018-06-22 11:07:47,372 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:47,372 INFO ]: Finished difference Result 302 states and 3134 transitions. [2018-06-22 11:07:47,376 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:07:47,376 INFO ]: Start accepts. Automaton has 9 states. Word has length 17 [2018-06-22 11:07:47,376 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:47,394 INFO ]: With dead ends: 302 [2018-06-22 11:07:47,394 INFO ]: Without dead ends: 302 [2018-06-22 11:07:47,395 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:07:47,395 INFO ]: Start minimizeSevpa. Operand 302 states. [2018-06-22 11:07:47,621 INFO ]: Finished minimizeSevpa. Reduced states from 302 to 262. [2018-06-22 11:07:47,621 INFO ]: Start removeUnreachable. Operand 262 states. [2018-06-22 11:07:47,632 INFO ]: Finished removeUnreachable. Reduced from 262 states to 262 states and 2354 transitions. [2018-06-22 11:07:47,632 INFO ]: Start accepts. Automaton has 262 states and 2354 transitions. Word has length 17 [2018-06-22 11:07:47,632 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:47,632 INFO ]: Abstraction has 262 states and 2354 transitions. [2018-06-22 11:07:47,632 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:07:47,632 INFO ]: Start isEmpty. Operand 262 states and 2354 transitions. [2018-06-22 11:07:47,648 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:07:47,648 INFO ]: Found error trace [2018-06-22 11:07:47,648 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:47,649 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:47,649 INFO ]: Analyzing trace with hash -1131951399, now seen corresponding path program 1 times [2018-06-22 11:07:47,649 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:47,649 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:47,649 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:47,649 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:47,649 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:47,657 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:48,001 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:07:48,001 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:07:48,001 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:07:48,015 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:48,043 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:07:48,045 INFO ]: Computing forward predicates... [2018-06-22 11:07:48,625 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:07:48,658 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:07:48,658 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2018-06-22 11:07:48,658 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:07:48,658 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:07:48,658 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:07:48,659 INFO ]: Start difference. First operand 262 states and 2354 transitions. Second operand 9 states. [2018-06-22 11:07:52,336 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:07:52,336 INFO ]: Finished difference Result 349 states and 3161 transitions. [2018-06-22 11:07:52,337 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-06-22 11:07:52,337 INFO ]: Start accepts. Automaton has 9 states. Word has length 17 [2018-06-22 11:07:52,337 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:07:52,355 INFO ]: With dead ends: 349 [2018-06-22 11:07:52,355 INFO ]: Without dead ends: 345 [2018-06-22 11:07:52,356 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:07:52,356 INFO ]: Start minimizeSevpa. Operand 345 states. [2018-06-22 11:07:52,613 INFO ]: Finished minimizeSevpa. Reduced states from 345 to 312. [2018-06-22 11:07:52,613 INFO ]: Start removeUnreachable. Operand 312 states. [2018-06-22 11:07:52,624 INFO ]: Finished removeUnreachable. Reduced from 312 states to 312 states and 2839 transitions. [2018-06-22 11:07:52,624 INFO ]: Start accepts. Automaton has 312 states and 2839 transitions. Word has length 17 [2018-06-22 11:07:52,624 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:07:52,624 INFO ]: Abstraction has 312 states and 2839 transitions. [2018-06-22 11:07:52,624 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:07:52,624 INFO ]: Start isEmpty. Operand 312 states and 2839 transitions. [2018-06-22 11:07:52,637 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:07:52,637 INFO ]: Found error trace [2018-06-22 11:07:52,637 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:07:52,637 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:07:52,637 INFO ]: Analyzing trace with hash 565843285, now seen corresponding path program 1 times [2018-06-22 11:07:52,637 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:07:52,637 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:07:52,638 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:52,638 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:07:52,638 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:07:52,654 INFO ]: Conjunction of SSA is sat [2018-06-22 11:07:52,655 INFO ]: Counterexample might be feasible [2018-06-22 11:07:52,675 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:07:52 BoogieIcfgContainer [2018-06-22 11:07:52,675 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:07:52,676 INFO ]: Toolchain (without parser) took 14913.62 ms. Allocated memory was 307.2 MB in the beginning and 421.0 MB in the end (delta: 113.8 MB). Free memory was 253.7 MB in the beginning and 201.4 MB in the end (delta: 52.3 MB). Peak memory consumption was 166.1 MB. Max. memory is 3.6 GB. [2018-06-22 11:07:52,678 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:07:52,678 INFO ]: ChcToBoogie took 111.91 ms. Allocated memory is still 307.2 MB. Free memory was 253.7 MB in the beginning and 250.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:07:52,679 INFO ]: Boogie Preprocessor took 73.41 ms. Allocated memory is still 307.2 MB. Free memory was 250.7 MB in the beginning and 249.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:07:52,679 INFO ]: RCFGBuilder took 1049.86 ms. Allocated memory is still 307.2 MB. Free memory was 249.7 MB in the beginning and 219.6 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:07:52,680 INFO ]: TraceAbstraction took 13655.56 ms. Allocated memory was 307.2 MB in the beginning and 421.0 MB in the end (delta: 113.8 MB). Free memory was 218.7 MB in the beginning and 201.4 MB in the end (delta: 17.3 MB). Peak memory consumption was 131.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:07:52,685 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 111.91 ms. Allocated memory is still 307.2 MB. Free memory was 253.7 MB in the beginning and 250.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 73.41 ms. Allocated memory is still 307.2 MB. Free memory was 250.7 MB in the beginning and 249.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 1049.86 ms. Allocated memory is still 307.2 MB. Free memory was 249.7 MB in the beginning and 219.6 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 13655.56 ms. Allocated memory was 307.2 MB in the beginning and 421.0 MB in the end (delta: 113.8 MB). Free memory was 218.7 MB in the beginning and 201.4 MB in the end (delta: 17.3 MB). Peak memory consumption was 131.0 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 False(); [L0] assume (((((((!(hbv_False_2_Int == 0) && hbv_False_2_Int + -1 == hbv_False_4_Int) && hbv_False_5_Int + -1 == 0) && !(hbv_False_3_Int == 0)) && !(hbv_False_7_Int == hbv_False_3_Int + 1)) && hbv_False_1_Int + -1 == hbv_False_6_Int) && !(hbv_False_1_Int == 0)) && hbv_False_2_Int == hbv_False_3_Int) && hbv_False_1_Int == hbv_False_5_Int; [L0] CALL call REC_f_(hbv_False_1_Int, hbv_False_4_Int, hbv_False_8_Int); [L0] assume (((hhv_REC_f__0_Int + -1 >= 0 && !(hhv_REC_f__0_Int == 0)) && hhv_REC_f__0_Int + -1 == hbv_REC_f__1_Int) && -1 * hbv_REC_f__2_Int == -1) && hhv_REC_f__1_Int == 0; [L0] CALL call REC_f_(hbv_REC_f__1_Int, hbv_REC_f__2_Int, hhv_REC_f__2_Int); [L0] assume hhv_REC_f__1_Int + 1 == hhv_REC_f__2_Int && hhv_REC_f__0_Int == 0; [L0] RET call REC_f_(hbv_REC_f__1_Int, hbv_REC_f__2_Int, hhv_REC_f__2_Int); [L0] RET call REC_f_(hbv_False_1_Int, hbv_False_4_Int, hbv_False_8_Int); [L0] CALL call REC_f_(hbv_False_6_Int, hbv_False_8_Int, hbv_False_7_Int); [L0] assume hhv_REC_f__1_Int + 1 == hhv_REC_f__2_Int && hhv_REC_f__0_Int == 0; [L0] RET call REC_f_(hbv_False_6_Int, hbv_False_8_Int, hbv_False_7_Int); [L0] RET call False(); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 91 locations, 1 error locations. UNSAFE Result, 13.5s OverallTime, 10 OverallIterations, 3 TraceHistogramMax, 9.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1199 SDtfs, 56 SDslu, 2950 SDs, 0 SdLazy, 2745 SolverSat, 564 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=312occurred in iteration=9, 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: 0.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 97 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 194 NumberOfCodeBlocks, 194 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 4568 SizeOfPredicates, 15 NumberOfNonLiveVariables, 292 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 23/33 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/001d-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-07-52-702.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/001d-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-07-52-702.csv Received shutdown request...