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/HOLA/16.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 10:50:06,149 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 10:50:06,152 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 10:50:06,167 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 10:50:06,167 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 10:50:06,168 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 10:50:06,173 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 10:50:06,176 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 10:50:06,177 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 10:50:06,179 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 10:50:06,180 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 10:50:06,180 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 10:50:06,181 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 10:50:06,183 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 10:50:06,183 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 10:50:06,184 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 10:50:06,188 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 10:50:06,191 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 10:50:06,196 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 10:50:06,197 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 10:50:06,199 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 10:50:06,206 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 10:50:06,206 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 10:50:06,206 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 10:50:06,207 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 10:50:06,208 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 10:50:06,209 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 10:50:06,210 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 10:50:06,211 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 10:50:06,211 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 10:50:06,211 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 10:50:06,217 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 10:50:06,217 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 10:50:06,218 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 10:50:06,218 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 10:50:06,219 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 10:50:06,236 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 10:50:06,236 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 10:50:06,236 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 10:50:06,236 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 10:50:06,237 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 10:50:06,238 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 10:50:06,238 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 10:50:06,238 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 10:50:06,238 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 10:50:06,238 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 10:50:06,239 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 10:50:06,239 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 10:50:06,239 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 10:50:06,239 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 10:50:06,239 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 10:50:06,240 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 10:50:06,240 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 10:50:06,240 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 10:50:06,240 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 10:50:06,242 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 10:50:06,242 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 10:50:06,285 INFO ]: Repository-Root is: /tmp [2018-06-22 10:50:06,298 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 10:50:06,302 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 10:50:06,304 INFO ]: Initializing SmtParser... [2018-06-22 10:50:06,304 INFO ]: SmtParser initialized [2018-06-22 10:50:06,305 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/16.c.smt2 [2018-06-22 10:50:06,306 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 10:50:06,396 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/16.c.smt2 unknown [2018-06-22 10:50:06,814 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/16.c.smt2 [2018-06-22 10:50:06,820 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 10:50:06,827 INFO ]: Walking toolchain with 4 elements. [2018-06-22 10:50:06,827 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 10:50:06,827 INFO ]: Initializing ChcToBoogie... [2018-06-22 10:50:06,828 INFO ]: ChcToBoogie initialized [2018-06-22 10:50:06,831 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:50:06" (1/1) ... [2018-06-22 10:50:06,893 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:50:06 Unit [2018-06-22 10:50:06,894 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 10:50:06,894 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 10:50:06,894 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 10:50:06,894 INFO ]: Boogie Preprocessor initialized [2018-06-22 10:50:06,918 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:50:06" (1/1) ... [2018-06-22 10:50:06,918 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:50:06" (1/1) ... [2018-06-22 10:50:06,938 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:50:06" (1/1) ... [2018-06-22 10:50:06,938 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:50:06" (1/1) ... [2018-06-22 10:50:06,942 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:50:06" (1/1) ... [2018-06-22 10:50:06,944 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:50:06" (1/1) ... [2018-06-22 10:50:06,946 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:50:06" (1/1) ... [2018-06-22 10:50:06,948 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 10:50:06,949 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 10:50:06,949 INFO ]: Initializing RCFGBuilder... [2018-06-22 10:50:06,949 INFO ]: RCFGBuilder initialized [2018-06-22 10:50:06,950 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:50:06" (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 10:50:06,964 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 10:50:06,964 INFO ]: Found specification of procedure False [2018-06-22 10:50:06,964 INFO ]: Found implementation of procedure False [2018-06-22 10:50:06,964 INFO ]: Specification and implementation of procedure h20 given in one single declaration [2018-06-22 10:50:06,964 INFO ]: Found specification of procedure h20 [2018-06-22 10:50:06,964 INFO ]: Found implementation of procedure h20 [2018-06-22 10:50:06,964 INFO ]: Specification and implementation of procedure h15 given in one single declaration [2018-06-22 10:50:06,964 INFO ]: Found specification of procedure h15 [2018-06-22 10:50:06,964 INFO ]: Found implementation of procedure h15 [2018-06-22 10:50:06,964 INFO ]: Specification and implementation of procedure h14 given in one single declaration [2018-06-22 10:50:06,964 INFO ]: Found specification of procedure h14 [2018-06-22 10:50:06,964 INFO ]: Found implementation of procedure h14 [2018-06-22 10:50:06,964 INFO ]: Specification and implementation of procedure h13 given in one single declaration [2018-06-22 10:50:06,964 INFO ]: Found specification of procedure h13 [2018-06-22 10:50:06,964 INFO ]: Found implementation of procedure h13 [2018-06-22 10:50:06,964 INFO ]: Specification and implementation of procedure h12 given in one single declaration [2018-06-22 10:50:06,964 INFO ]: Found specification of procedure h12 [2018-06-22 10:50:06,964 INFO ]: Found implementation of procedure h12 [2018-06-22 10:50:06,964 INFO ]: Specification and implementation of procedure h11 given in one single declaration [2018-06-22 10:50:06,964 INFO ]: Found specification of procedure h11 [2018-06-22 10:50:06,964 INFO ]: Found implementation of procedure h11 [2018-06-22 10:50:06,964 INFO ]: Specification and implementation of procedure h10 given in one single declaration [2018-06-22 10:50:06,964 INFO ]: Found specification of procedure h10 [2018-06-22 10:50:06,965 INFO ]: Found implementation of procedure h10 [2018-06-22 10:50:06,965 INFO ]: Specification and implementation of procedure h6 given in one single declaration [2018-06-22 10:50:06,965 INFO ]: Found specification of procedure h6 [2018-06-22 10:50:06,965 INFO ]: Found implementation of procedure h6 [2018-06-22 10:50:06,965 INFO ]: Specification and implementation of procedure h5 given in one single declaration [2018-06-22 10:50:06,965 INFO ]: Found specification of procedure h5 [2018-06-22 10:50:06,965 INFO ]: Found implementation of procedure h5 [2018-06-22 10:50:06,965 INFO ]: Specification and implementation of procedure h4 given in one single declaration [2018-06-22 10:50:06,965 INFO ]: Found specification of procedure h4 [2018-06-22 10:50:06,965 INFO ]: Found implementation of procedure h4 [2018-06-22 10:50:06,965 INFO ]: Specification and implementation of procedure h3 given in one single declaration [2018-06-22 10:50:06,965 INFO ]: Found specification of procedure h3 [2018-06-22 10:50:06,965 INFO ]: Found implementation of procedure h3 [2018-06-22 10:50:06,965 INFO ]: Specification and implementation of procedure h2 given in one single declaration [2018-06-22 10:50:06,965 INFO ]: Found specification of procedure h2 [2018-06-22 10:50:06,965 INFO ]: Found implementation of procedure h2 [2018-06-22 10:50:06,965 INFO ]: Specification and implementation of procedure h1 given in one single declaration [2018-06-22 10:50:06,965 INFO ]: Found specification of procedure h1 [2018-06-22 10:50:06,965 INFO ]: Found implementation of procedure h1 [2018-06-22 10:50:06,965 INFO ]: Specification and implementation of procedure h8 given in one single declaration [2018-06-22 10:50:06,965 INFO ]: Found specification of procedure h8 [2018-06-22 10:50:06,965 INFO ]: Found implementation of procedure h8 [2018-06-22 10:50:06,965 INFO ]: Specification and implementation of procedure h7 given in one single declaration [2018-06-22 10:50:06,965 INFO ]: Found specification of procedure h7 [2018-06-22 10:50:06,965 INFO ]: Found implementation of procedure h7 [2018-06-22 10:50:06,965 INFO ]: Specification and implementation of procedure h9 given in one single declaration [2018-06-22 10:50:06,965 INFO ]: Found specification of procedure h9 [2018-06-22 10:50:06,966 INFO ]: Found implementation of procedure h9 [2018-06-22 10:50:06,966 INFO ]: Specification and implementation of procedure h19 given in one single declaration [2018-06-22 10:50:06,966 INFO ]: Found specification of procedure h19 [2018-06-22 10:50:06,966 INFO ]: Found implementation of procedure h19 [2018-06-22 10:50:06,966 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 10:50:06,966 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 10:50:06,966 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 10:50:07,278 INFO ]: Using library mode [2018-06-22 10:50:07,279 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:50:07 BoogieIcfgContainer [2018-06-22 10:50:07,279 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 10:50:07,281 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 10:50:07,281 INFO ]: Initializing TraceAbstraction... [2018-06-22 10:50:07,284 INFO ]: TraceAbstraction initialized [2018-06-22 10:50:07,284 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 10:50:06" (1/3) ... [2018-06-22 10:50:07,285 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c02d3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 10:50:07, skipping insertion in model container [2018-06-22 10:50:07,285 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 10:50:06" (2/3) ... [2018-06-22 10:50:07,285 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c02d3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 10:50:07, skipping insertion in model container [2018-06-22 10:50:07,285 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 10:50:07" (3/3) ... [2018-06-22 10:50:07,287 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 10:50:07,298 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 10:50:07,307 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 10:50:07,350 INFO ]: Using default assertion order modulation [2018-06-22 10:50:07,351 INFO ]: Interprodecural is true [2018-06-22 10:50:07,351 INFO ]: Hoare is false [2018-06-22 10:50:07,351 INFO ]: Compute interpolants for FPandBP [2018-06-22 10:50:07,351 INFO ]: Backedges is TWOTRACK [2018-06-22 10:50:07,351 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 10:50:07,351 INFO ]: Difference is false [2018-06-22 10:50:07,351 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 10:50:07,351 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 10:50:07,377 INFO ]: Start isEmpty. Operand 79 states. [2018-06-22 10:50:07,393 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 10:50:07,393 INFO ]: Found error trace [2018-06-22 10:50:07,394 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:50:07,395 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:50:07,398 INFO ]: Analyzing trace with hash -1732775879, now seen corresponding path program 1 times [2018-06-22 10:50:07,400 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:50:07,401 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:50:07,434 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:07,434 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:50:07,434 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:07,504 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:50:08,325 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:50:08,328 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:50:08,328 INFO ]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-06-22 10:50:08,330 INFO ]: Interpolant automaton has 16 states [2018-06-22 10:50:08,347 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 10:50:08,348 INFO ]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-06-22 10:50:08,353 INFO ]: Start difference. First operand 79 states. Second operand 16 states. [2018-06-22 10:50:09,130 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:50:09,131 INFO ]: Finished difference Result 93 states and 100 transitions. [2018-06-22 10:50:09,131 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 10:50:09,132 INFO ]: Start accepts. Automaton has 16 states. Word has length 57 [2018-06-22 10:50:09,133 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:50:09,145 INFO ]: With dead ends: 93 [2018-06-22 10:50:09,145 INFO ]: Without dead ends: 93 [2018-06-22 10:50:09,147 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2018-06-22 10:50:09,160 INFO ]: Start minimizeSevpa. Operand 93 states. [2018-06-22 10:50:09,190 INFO ]: Finished minimizeSevpa. Reduced states from 93 to 93. [2018-06-22 10:50:09,191 INFO ]: Start removeUnreachable. Operand 93 states. [2018-06-22 10:50:09,193 INFO ]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2018-06-22 10:50:09,194 INFO ]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 57 [2018-06-22 10:50:09,195 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:50:09,195 INFO ]: Abstraction has 93 states and 100 transitions. [2018-06-22 10:50:09,195 INFO ]: Interpolant automaton has 16 states. [2018-06-22 10:50:09,195 INFO ]: Start isEmpty. Operand 93 states and 100 transitions. [2018-06-22 10:50:09,198 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 10:50:09,198 INFO ]: Found error trace [2018-06-22 10:50:09,198 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:50:09,198 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:50:09,199 INFO ]: Analyzing trace with hash -2077435460, now seen corresponding path program 1 times [2018-06-22 10:50:09,199 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:50:09,199 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:50:09,200 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:09,200 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:50:09,200 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:09,224 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:50:09,557 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 10:50:09,557 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:50:09,558 INFO ]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2018-06-22 10:50:09,559 INFO ]: Interpolant automaton has 16 states [2018-06-22 10:50:09,559 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 10:50:09,559 INFO ]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2018-06-22 10:50:09,560 INFO ]: Start difference. First operand 93 states and 100 transitions. Second operand 16 states. [2018-06-22 10:50:10,025 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:50:10,025 INFO ]: Finished difference Result 93 states and 99 transitions. [2018-06-22 10:50:10,026 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-06-22 10:50:10,026 INFO ]: Start accepts. Automaton has 16 states. Word has length 57 [2018-06-22 10:50:10,027 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:50:10,028 INFO ]: With dead ends: 93 [2018-06-22 10:50:10,028 INFO ]: Without dead ends: 81 [2018-06-22 10:50:10,029 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2018-06-22 10:50:10,029 INFO ]: Start minimizeSevpa. Operand 81 states. [2018-06-22 10:50:10,039 INFO ]: Finished minimizeSevpa. Reduced states from 81 to 81. [2018-06-22 10:50:10,039 INFO ]: Start removeUnreachable. Operand 81 states. [2018-06-22 10:50:10,041 INFO ]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-06-22 10:50:10,041 INFO ]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 57 [2018-06-22 10:50:10,041 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:50:10,041 INFO ]: Abstraction has 81 states and 87 transitions. [2018-06-22 10:50:10,041 INFO ]: Interpolant automaton has 16 states. [2018-06-22 10:50:10,041 INFO ]: Start isEmpty. Operand 81 states and 87 transitions. [2018-06-22 10:50:10,043 INFO ]: Finished isEmpty. Found accepting run of length 74 [2018-06-22 10:50:10,043 INFO ]: Found error trace [2018-06-22 10:50:10,044 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:50:10,044 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:50:10,044 INFO ]: Analyzing trace with hash -1920739803, now seen corresponding path program 1 times [2018-06-22 10:50:10,044 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:50:10,044 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:50:10,045 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:10,045 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:50:10,045 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:10,074 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:50:10,165 INFO ]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:50:10,165 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:50:10,165 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 10:50:10,166 INFO ]: Interpolant automaton has 8 states [2018-06-22 10:50:10,166 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 10:50:10,166 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:50:10,166 INFO ]: Start difference. First operand 81 states and 87 transitions. Second operand 8 states. [2018-06-22 10:50:10,321 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:50:10,321 INFO ]: Finished difference Result 99 states and 111 transitions. [2018-06-22 10:50:10,321 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 10:50:10,322 INFO ]: Start accepts. Automaton has 8 states. Word has length 73 [2018-06-22 10:50:10,322 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:50:10,324 INFO ]: With dead ends: 99 [2018-06-22 10:50:10,324 INFO ]: Without dead ends: 99 [2018-06-22 10:50:10,325 INFO ]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:50:10,325 INFO ]: Start minimizeSevpa. Operand 99 states. [2018-06-22 10:50:10,336 INFO ]: Finished minimizeSevpa. Reduced states from 99 to 98. [2018-06-22 10:50:10,336 INFO ]: Start removeUnreachable. Operand 98 states. [2018-06-22 10:50:10,338 INFO ]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2018-06-22 10:50:10,338 INFO ]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 73 [2018-06-22 10:50:10,338 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:50:10,338 INFO ]: Abstraction has 98 states and 109 transitions. [2018-06-22 10:50:10,338 INFO ]: Interpolant automaton has 8 states. [2018-06-22 10:50:10,338 INFO ]: Start isEmpty. Operand 98 states and 109 transitions. [2018-06-22 10:50:10,343 INFO ]: Finished isEmpty. Found accepting run of length 74 [2018-06-22 10:50:10,343 INFO ]: Found error trace [2018-06-22 10:50:10,343 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:50:10,343 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:50:10,343 INFO ]: Analyzing trace with hash 615510722, now seen corresponding path program 1 times [2018-06-22 10:50:10,343 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:50:10,343 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:50:10,344 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:10,344 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:50:10,344 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:10,371 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:50:10,961 INFO ]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:50:10,962 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:50:10,962 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 10:50:10,967 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:50:11,038 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:50:11,053 INFO ]: Computing forward predicates... [2018-06-22 10:50:11,712 INFO ]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:50:11,744 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:50:11,745 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 37 [2018-06-22 10:50:11,745 INFO ]: Interpolant automaton has 37 states [2018-06-22 10:50:11,745 INFO ]: Constructing interpolant automaton starting with 37 interpolants. [2018-06-22 10:50:11,746 INFO ]: CoverageRelationStatistics Valid=92, Invalid=1240, Unknown=0, NotChecked=0, Total=1332 [2018-06-22 10:50:11,746 INFO ]: Start difference. First operand 98 states and 109 transitions. Second operand 37 states. [2018-06-22 10:50:12,978 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:50:12,979 INFO ]: Finished difference Result 148 states and 163 transitions. [2018-06-22 10:50:12,979 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-06-22 10:50:12,979 INFO ]: Start accepts. Automaton has 37 states. Word has length 73 [2018-06-22 10:50:12,980 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:50:12,982 INFO ]: With dead ends: 148 [2018-06-22 10:50:12,982 INFO ]: Without dead ends: 148 [2018-06-22 10:50:12,983 INFO ]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=125, Invalid=1681, Unknown=0, NotChecked=0, Total=1806 [2018-06-22 10:50:12,983 INFO ]: Start minimizeSevpa. Operand 148 states. [2018-06-22 10:50:13,008 INFO ]: Finished minimizeSevpa. Reduced states from 148 to 130. [2018-06-22 10:50:13,008 INFO ]: Start removeUnreachable. Operand 130 states. [2018-06-22 10:50:13,012 INFO ]: Finished removeUnreachable. Reduced from 130 states to 130 states and 145 transitions. [2018-06-22 10:50:13,012 INFO ]: Start accepts. Automaton has 130 states and 145 transitions. Word has length 73 [2018-06-22 10:50:13,012 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:50:13,012 INFO ]: Abstraction has 130 states and 145 transitions. [2018-06-22 10:50:13,012 INFO ]: Interpolant automaton has 37 states. [2018-06-22 10:50:13,013 INFO ]: Start isEmpty. Operand 130 states and 145 transitions. [2018-06-22 10:50:13,020 INFO ]: Finished isEmpty. Found accepting run of length 74 [2018-06-22 10:50:13,020 INFO ]: Found error trace [2018-06-22 10:50:13,020 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:50:13,020 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:50:13,021 INFO ]: Analyzing trace with hash 324764991, now seen corresponding path program 1 times [2018-06-22 10:50:13,021 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:50:13,021 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:50:13,022 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:13,022 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:50:13,022 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:13,058 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:50:13,507 INFO ]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:50:13,507 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:50:13,507 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 10:50:13,512 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:50:13,577 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:50:13,585 INFO ]: Computing forward predicates... [2018-06-22 10:50:14,146 INFO ]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 10:50:14,165 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:50:14,165 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 35 [2018-06-22 10:50:14,166 INFO ]: Interpolant automaton has 35 states [2018-06-22 10:50:14,166 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-22 10:50:14,166 INFO ]: CoverageRelationStatistics Valid=80, Invalid=1110, Unknown=0, NotChecked=0, Total=1190 [2018-06-22 10:50:14,167 INFO ]: Start difference. First operand 130 states and 145 transitions. Second operand 35 states. [2018-06-22 10:50:14,867 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:50:14,867 INFO ]: Finished difference Result 152 states and 166 transitions. [2018-06-22 10:50:14,867 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-06-22 10:50:14,867 INFO ]: Start accepts. Automaton has 35 states. Word has length 73 [2018-06-22 10:50:14,868 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:50:14,870 INFO ]: With dead ends: 152 [2018-06-22 10:50:14,870 INFO ]: Without dead ends: 140 [2018-06-22 10:50:14,870 INFO ]: 0 DeclaredPredicates, 97 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2018-06-22 10:50:14,871 INFO ]: Start minimizeSevpa. Operand 140 states. [2018-06-22 10:50:14,884 INFO ]: Finished minimizeSevpa. Reduced states from 140 to 130. [2018-06-22 10:50:14,884 INFO ]: Start removeUnreachable. Operand 130 states. [2018-06-22 10:50:14,886 INFO ]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2018-06-22 10:50:14,886 INFO ]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 73 [2018-06-22 10:50:14,886 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:50:14,886 INFO ]: Abstraction has 130 states and 144 transitions. [2018-06-22 10:50:14,886 INFO ]: Interpolant automaton has 35 states. [2018-06-22 10:50:14,886 INFO ]: Start isEmpty. Operand 130 states and 144 transitions. [2018-06-22 10:50:14,888 INFO ]: Finished isEmpty. Found accepting run of length 90 [2018-06-22 10:50:14,888 INFO ]: Found error trace [2018-06-22 10:50:14,888 INFO ]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:50:14,888 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:50:14,888 INFO ]: Analyzing trace with hash 1686560837, now seen corresponding path program 2 times [2018-06-22 10:50:14,888 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:50:14,888 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:50:14,889 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:14,889 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:50:14,889 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:14,907 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:50:15,689 INFO ]: Checked inductivity of 30 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 10:50:15,689 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:50:15,689 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) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 10:50:15,696 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 10:50:15,753 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 10:50:15,753 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:50:15,761 INFO ]: Computing forward predicates... [2018-06-22 10:50:16,683 INFO ]: Checked inductivity of 30 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-06-22 10:50:16,704 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:50:16,704 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 43 [2018-06-22 10:50:16,705 INFO ]: Interpolant automaton has 43 states [2018-06-22 10:50:16,705 INFO ]: Constructing interpolant automaton starting with 43 interpolants. [2018-06-22 10:50:16,705 INFO ]: CoverageRelationStatistics Valid=102, Invalid=1704, Unknown=0, NotChecked=0, Total=1806 [2018-06-22 10:50:16,705 INFO ]: Start difference. First operand 130 states and 144 transitions. Second operand 43 states. [2018-06-22 10:50:18,045 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:50:18,045 INFO ]: Finished difference Result 166 states and 181 transitions. [2018-06-22 10:50:18,045 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-06-22 10:50:18,045 INFO ]: Start accepts. Automaton has 43 states. Word has length 89 [2018-06-22 10:50:18,046 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:50:18,047 INFO ]: With dead ends: 166 [2018-06-22 10:50:18,047 INFO ]: Without dead ends: 154 [2018-06-22 10:50:18,048 INFO ]: 0 DeclaredPredicates, 128 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=187, Invalid=3005, Unknown=0, NotChecked=0, Total=3192 [2018-06-22 10:50:18,049 INFO ]: Start minimizeSevpa. Operand 154 states. [2018-06-22 10:50:18,067 INFO ]: Finished minimizeSevpa. Reduced states from 154 to 138. [2018-06-22 10:50:18,068 INFO ]: Start removeUnreachable. Operand 138 states. [2018-06-22 10:50:18,069 INFO ]: Finished removeUnreachable. Reduced from 138 states to 138 states and 153 transitions. [2018-06-22 10:50:18,069 INFO ]: Start accepts. Automaton has 138 states and 153 transitions. Word has length 89 [2018-06-22 10:50:18,070 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:50:18,070 INFO ]: Abstraction has 138 states and 153 transitions. [2018-06-22 10:50:18,070 INFO ]: Interpolant automaton has 43 states. [2018-06-22 10:50:18,070 INFO ]: Start isEmpty. Operand 138 states and 153 transitions. [2018-06-22 10:50:18,072 INFO ]: Finished isEmpty. Found accepting run of length 90 [2018-06-22 10:50:18,072 INFO ]: Found error trace [2018-06-22 10:50:18,072 INFO ]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:50:18,072 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:50:18,072 INFO ]: Analyzing trace with hash 2129306155, now seen corresponding path program 1 times [2018-06-22 10:50:18,072 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:50:18,072 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:50:18,073 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:18,073 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 10:50:18,073 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:18,086 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:50:18,742 INFO ]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-06-22 10:50:18,742 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 10:50:18,743 INFO ]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-06-22 10:50:18,743 INFO ]: Interpolant automaton has 8 states [2018-06-22 10:50:18,743 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 10:50:18,743 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 10:50:18,743 INFO ]: Start difference. First operand 138 states and 153 transitions. Second operand 8 states. [2018-06-22 10:50:18,884 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:50:18,884 INFO ]: Finished difference Result 114 states and 125 transitions. [2018-06-22 10:50:18,884 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 10:50:18,884 INFO ]: Start accepts. Automaton has 8 states. Word has length 89 [2018-06-22 10:50:18,884 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:50:18,885 INFO ]: With dead ends: 114 [2018-06-22 10:50:18,885 INFO ]: Without dead ends: 87 [2018-06-22 10:50:18,885 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-06-22 10:50:18,885 INFO ]: Start minimizeSevpa. Operand 87 states. [2018-06-22 10:50:18,892 INFO ]: Finished minimizeSevpa. Reduced states from 87 to 87. [2018-06-22 10:50:18,892 INFO ]: Start removeUnreachable. Operand 87 states. [2018-06-22 10:50:18,893 INFO ]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2018-06-22 10:50:18,893 INFO ]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 89 [2018-06-22 10:50:18,893 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:50:18,893 INFO ]: Abstraction has 87 states and 88 transitions. [2018-06-22 10:50:18,893 INFO ]: Interpolant automaton has 8 states. [2018-06-22 10:50:18,893 INFO ]: Start isEmpty. Operand 87 states and 88 transitions. [2018-06-22 10:50:18,895 INFO ]: Finished isEmpty. Found accepting run of length 106 [2018-06-22 10:50:18,895 INFO ]: Found error trace [2018-06-22 10:50:18,895 INFO ]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 10:50:18,895 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 10:50:18,895 INFO ]: Analyzing trace with hash -1481148722, now seen corresponding path program 2 times [2018-06-22 10:50:18,895 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 10:50:18,895 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 10:50:18,896 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:18,896 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 10:50:18,896 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 10:50:18,914 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:50:19,389 INFO ]: Checked inductivity of 69 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-06-22 10:50:19,390 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 10:50:19,390 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 10:50:19,398 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 10:50:19,491 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 10:50:19,491 INFO ]: Conjunction of SSA is unsat [2018-06-22 10:50:19,512 INFO ]: Computing forward predicates... [2018-06-22 10:50:20,557 INFO ]: Checked inductivity of 69 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2018-06-22 10:50:20,577 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 10:50:20,577 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29] total 47 [2018-06-22 10:50:20,578 INFO ]: Interpolant automaton has 47 states [2018-06-22 10:50:20,578 INFO ]: Constructing interpolant automaton starting with 47 interpolants. [2018-06-22 10:50:20,579 INFO ]: CoverageRelationStatistics Valid=130, Invalid=2032, Unknown=0, NotChecked=0, Total=2162 [2018-06-22 10:50:20,579 INFO ]: Start difference. First operand 87 states and 88 transitions. Second operand 47 states. [2018-06-22 10:50:21,181 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 10:50:21,181 INFO ]: Finished difference Result 97 states and 99 transitions. [2018-06-22 10:50:21,181 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-06-22 10:50:21,182 INFO ]: Start accepts. Automaton has 47 states. Word has length 105 [2018-06-22 10:50:21,182 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 10:50:21,182 INFO ]: With dead ends: 97 [2018-06-22 10:50:21,182 INFO ]: Without dead ends: 0 [2018-06-22 10:50:21,183 INFO ]: 0 DeclaredPredicates, 143 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=185, Invalid=2785, Unknown=0, NotChecked=0, Total=2970 [2018-06-22 10:50:21,183 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 10:50:21,183 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 10:50:21,183 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 10:50:21,183 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 10:50:21,183 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2018-06-22 10:50:21,183 INFO ]: Finished accepts. word is rejected. [2018-06-22 10:50:21,183 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 10:50:21,183 INFO ]: Interpolant automaton has 47 states. [2018-06-22 10:50:21,183 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 10:50:21,183 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 10:50:21,188 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 10:50:21 BoogieIcfgContainer [2018-06-22 10:50:21,188 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 10:50:21,189 INFO ]: Toolchain (without parser) took 14368.77 ms. Allocated memory was 303.0 MB in the beginning and 474.0 MB in the end (delta: 170.9 MB). Free memory was 245.4 MB in the beginning and 262.0 MB in the end (delta: -16.6 MB). Peak memory consumption was 154.3 MB. Max. memory is 3.6 GB. [2018-06-22 10:50:21,191 INFO ]: SmtParser took 0.45 ms. Allocated memory is still 303.0 MB. Free memory is still 266.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 10:50:21,191 INFO ]: ChcToBoogie took 66.65 ms. Allocated memory is still 303.0 MB. Free memory was 245.4 MB in the beginning and 243.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:50:21,191 INFO ]: Boogie Preprocessor took 54.24 ms. Allocated memory is still 303.0 MB. Free memory was 243.4 MB in the beginning and 241.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:50:21,192 INFO ]: RCFGBuilder took 329.94 ms. Allocated memory is still 303.0 MB. Free memory was 241.5 MB in the beginning and 224.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 3.6 GB. [2018-06-22 10:50:21,192 INFO ]: TraceAbstraction took 13907.75 ms. Allocated memory was 303.0 MB in the beginning and 474.0 MB in the end (delta: 170.9 MB). Free memory was 223.4 MB in the beginning and 262.0 MB in the end (delta: -38.6 MB). Peak memory consumption was 132.3 MB. Max. memory is 3.6 GB. [2018-06-22 10:50:21,194 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.45 ms. Allocated memory is still 303.0 MB. Free memory is still 266.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 66.65 ms. Allocated memory is still 303.0 MB. Free memory was 245.4 MB in the beginning and 243.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 54.24 ms. Allocated memory is still 303.0 MB. Free memory was 243.4 MB in the beginning and 241.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 329.94 ms. Allocated memory is still 303.0 MB. Free memory was 241.5 MB in the beginning and 224.4 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 13907.75 ms. Allocated memory was 303.0 MB in the beginning and 474.0 MB in the end (delta: 170.9 MB). Free memory was 223.4 MB in the beginning and 262.0 MB in the end (delta: -38.6 MB). Peak memory consumption was 132.3 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 19 procedures, 79 locations, 1 error locations. SAFE Result, 13.8s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 5.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 578 SDtfs, 64 SDslu, 10717 SDs, 0 SdLazy, 3270 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 522 GetRequests, 289 SyntacticMatches, 2 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1389 ImplicationChecksByTransitivity, 7.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=138occurred in iteration=6, 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 45 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.3s InterpolantComputationTime, 956 NumberOfCodeBlocks, 956 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 944 ConstructedInterpolants, 0 QuantifiedInterpolants, 291496 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2113 ConjunctsInSsa, 272 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 159/258 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/16.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_10-50-21-204.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/16.c.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_10-50-21-204.csv Received shutdown request...