java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/llreve/barthe_merged_safe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:53:17,314 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:53:17,316 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:53:17,327 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:53:17,327 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:53:17,328 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:53:17,329 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:53:17,330 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:53:17,332 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:53:17,333 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:53:17,333 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:53:17,334 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:53:17,334 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:53:17,336 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:53:17,336 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:53:17,337 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:53:17,339 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:53:17,341 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:53:17,342 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:53:17,343 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:53:17,344 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:53:17,346 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:53:17,347 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:53:17,347 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:53:17,348 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:53:17,349 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:53:17,349 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:53:17,350 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:53:17,351 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:53:17,351 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:53:17,352 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:53:17,353 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:53:17,353 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:53:17,354 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:53:17,354 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:53:17,355 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:53:17,368 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:53:17,369 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:53:17,369 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:53:17,369 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:53:17,370 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:53:17,370 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:53:17,370 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:53:17,371 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:53:17,371 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:53:17,371 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:53:17,371 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:53:17,372 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:53:17,372 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:53:17,372 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:53:17,372 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:53:17,373 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:53:17,373 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:53:17,373 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:53:17,373 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:53:17,373 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:53:17,373 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:53:17,375 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:53:17,375 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:53:17,428 INFO ]: Repository-Root is: /tmp [2018-06-25 08:53:17,445 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:53:17,448 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:53:17,450 INFO ]: Initializing SmtParser... [2018-06-25 08:53:17,450 INFO ]: SmtParser initialized [2018-06-25 08:53:17,451 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/barthe_merged_safe.c-1.smt2 [2018-06-25 08:53:17,452 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 [2018-06-25 08:53:17,545 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/barthe_merged_safe.c-1.smt2 unknown [2018-06-25 08:53:17,734 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/barthe_merged_safe.c-1.smt2 [2018-06-25 08:53:17,741 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:53:17,746 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:53:17,747 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:53:17,747 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:53:17,747 INFO ]: ChcToBoogie initialized [2018-06-25 08:53:17,750 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:53:17" (1/1) ... [2018-06-25 08:53:17,801 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:53:17 Unit [2018-06-25 08:53:17,801 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:53:17,802 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:53:17,802 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:53:17,802 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:53:17,817 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:53:17" (1/1) ... [2018-06-25 08:53:17,817 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:53:17" (1/1) ... [2018-06-25 08:53:17,821 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:53:17" (1/1) ... [2018-06-25 08:53:17,822 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:53:17" (1/1) ... [2018-06-25 08:53:17,825 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:53:17" (1/1) ... [2018-06-25 08:53:17,827 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:53:17" (1/1) ... [2018-06-25 08:53:17,828 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:53:17" (1/1) ... [2018-06-25 08:53:17,830 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:53:17,831 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:53:17,831 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:53:17,831 INFO ]: RCFGBuilder initialized [2018-06-25 08:53:17,832 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:53:17" (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) [2018-06-25 08:53:17,848 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:53:17,848 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:53:17,848 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:53:17,848 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:53:17,848 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:53:17,848 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 [2018-06-25 08:53:18,065 INFO ]: Using library mode [2018-06-25 08:53:18,066 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:53:18 BoogieIcfgContainer [2018-06-25 08:53:18,066 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:53:18,068 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:53:18,068 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:53:18,071 INFO ]: TraceAbstraction initialized [2018-06-25 08:53:18,071 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:53:17" (1/3) ... [2018-06-25 08:53:18,072 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26635cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:53:18, skipping insertion in model container [2018-06-25 08:53:18,072 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:53:17" (2/3) ... [2018-06-25 08:53:18,073 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26635cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:53:18, skipping insertion in model container [2018-06-25 08:53:18,073 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:53:18" (3/3) ... [2018-06-25 08:53:18,074 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:53:18,084 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:53:18,094 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:53:18,145 INFO ]: Using default assertion order modulation [2018-06-25 08:53:18,146 INFO ]: Interprodecural is true [2018-06-25 08:53:18,146 INFO ]: Hoare is false [2018-06-25 08:53:18,146 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:53:18,146 INFO ]: Backedges is TWOTRACK [2018-06-25 08:53:18,146 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:53:18,146 INFO ]: Difference is false [2018-06-25 08:53:18,146 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:53:18,146 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:53:18,163 INFO ]: Start isEmpty. Operand 12 states. [2018-06-25 08:53:18,181 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 08:53:18,181 INFO ]: Found error trace [2018-06-25 08:53:18,182 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:53:18,182 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:53:18,187 INFO ]: Analyzing trace with hash -1936981874, now seen corresponding path program 1 times [2018-06-25 08:53:18,189 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:53:18,189 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:53:18,239 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:18,239 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:53:18,239 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:18,282 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:53:18,444 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:53:18,446 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:53:18,446 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 08:53:18,447 INFO ]: Interpolant automaton has 4 states [2018-06-25 08:53:18,457 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 08:53:18,457 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 08:53:18,459 INFO ]: Start difference. First operand 12 states. Second operand 4 states. [2018-06-25 08:53:18,518 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:53:18,518 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-25 08:53:18,519 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 08:53:18,519 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 08:53:18,520 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:53:18,525 INFO ]: With dead ends: 13 [2018-06-25 08:53:18,526 INFO ]: Without dead ends: 12 [2018-06-25 08:53:18,529 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 08:53:18,547 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 08:53:18,560 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 11. [2018-06-25 08:53:18,561 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 08:53:18,562 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-06-25 08:53:18,563 INFO ]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8 [2018-06-25 08:53:18,563 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:53:18,563 INFO ]: Abstraction has 11 states and 12 transitions. [2018-06-25 08:53:18,563 INFO ]: Interpolant automaton has 4 states. [2018-06-25 08:53:18,563 INFO ]: Start isEmpty. Operand 11 states and 12 transitions. [2018-06-25 08:53:18,564 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-25 08:53:18,564 INFO ]: Found error trace [2018-06-25 08:53:18,564 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:53:18,564 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:53:18,564 INFO ]: Analyzing trace with hash -1810149414, now seen corresponding path program 1 times [2018-06-25 08:53:18,564 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:53:18,564 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:53:18,565 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:18,565 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:53:18,565 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:18,597 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:53:18,854 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:53:18,855 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:53:18,855 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-25 08:53:18,856 INFO ]: Interpolant automaton has 5 states [2018-06-25 08:53:18,856 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 08:53:18,856 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-25 08:53:18,856 INFO ]: Start difference. First operand 11 states and 12 transitions. Second operand 5 states. [2018-06-25 08:53:19,243 WARN ]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-06-25 08:53:19,274 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:53:19,274 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-25 08:53:19,275 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 08:53:19,275 INFO ]: Start accepts. Automaton has 5 states. Word has length 9 [2018-06-25 08:53:19,275 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:53:19,275 INFO ]: With dead ends: 15 [2018-06-25 08:53:19,275 INFO ]: Without dead ends: 14 [2018-06-25 08:53:19,276 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-25 08:53:19,276 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-25 08:53:19,277 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 12. [2018-06-25 08:53:19,277 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-25 08:53:19,278 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2018-06-25 08:53:19,278 INFO ]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2018-06-25 08:53:19,278 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:53:19,278 INFO ]: Abstraction has 12 states and 13 transitions. [2018-06-25 08:53:19,278 INFO ]: Interpolant automaton has 5 states. [2018-06-25 08:53:19,278 INFO ]: Start isEmpty. Operand 12 states and 13 transitions. [2018-06-25 08:53:19,278 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 08:53:19,278 INFO ]: Found error trace [2018-06-25 08:53:19,278 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:53:19,278 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:53:19,279 INFO ]: Analyzing trace with hash -177594924, now seen corresponding path program 1 times [2018-06-25 08:53:19,279 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:53:19,279 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:53:19,279 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:19,279 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:53:19,279 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:19,298 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:53:19,405 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:53:19,405 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:53:19,405 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 [2018-06-25 08:53:19,411 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:53:19,446 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:53:19,455 INFO ]: Computing forward predicates... [2018-06-25 08:53:19,608 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:53:19,627 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:53:19,628 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-25 08:53:19,628 INFO ]: Interpolant automaton has 8 states [2018-06-25 08:53:19,628 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 08:53:19,628 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-25 08:53:19,628 INFO ]: Start difference. First operand 12 states and 13 transitions. Second operand 8 states. [2018-06-25 08:53:19,740 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:53:19,740 INFO ]: Finished difference Result 16 states and 17 transitions. [2018-06-25 08:53:19,740 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 08:53:19,740 INFO ]: Start accepts. Automaton has 8 states. Word has length 10 [2018-06-25 08:53:19,740 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:53:19,753 INFO ]: With dead ends: 16 [2018-06-25 08:53:19,753 INFO ]: Without dead ends: 12 [2018-06-25 08:53:19,754 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2018-06-25 08:53:19,754 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 08:53:19,755 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-25 08:53:19,755 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-25 08:53:19,755 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-25 08:53:19,755 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-25 08:53:19,755 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:53:19,755 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-25 08:53:19,755 INFO ]: Interpolant automaton has 8 states. [2018-06-25 08:53:19,755 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-25 08:53:19,756 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 08:53:19,756 INFO ]: Found error trace [2018-06-25 08:53:19,756 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:53:19,756 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:53:19,756 INFO ]: Analyzing trace with hash 1449314848, now seen corresponding path program 1 times [2018-06-25 08:53:19,756 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:53:19,756 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:53:19,757 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:19,757 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:53:19,757 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:19,815 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:53:20,231 WARN ]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-06-25 08:53:20,232 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:53:20,232 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:53:20,232 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 [2018-06-25 08:53:20,247 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:53:20,285 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:53:20,289 INFO ]: Computing forward predicates... [2018-06-25 08:53:20,694 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:53:20,731 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:53:20,731 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2018-06-25 08:53:20,732 INFO ]: Interpolant automaton has 10 states [2018-06-25 08:53:20,732 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 08:53:20,732 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-25 08:53:20,732 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 10 states. [2018-06-25 08:53:21,200 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:53:21,200 INFO ]: Finished difference Result 16 states and 16 transitions. [2018-06-25 08:53:21,202 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 08:53:21,202 INFO ]: Start accepts. Automaton has 10 states. Word has length 11 [2018-06-25 08:53:21,202 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:53:21,202 INFO ]: With dead ends: 16 [2018-06-25 08:53:21,202 INFO ]: Without dead ends: 15 [2018-06-25 08:53:21,203 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-06-25 08:53:21,203 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-25 08:53:21,204 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 14. [2018-06-25 08:53:21,204 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-25 08:53:21,204 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-25 08:53:21,205 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-06-25 08:53:21,205 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:53:21,205 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-25 08:53:21,205 INFO ]: Interpolant automaton has 10 states. [2018-06-25 08:53:21,205 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-25 08:53:21,205 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-25 08:53:21,205 INFO ]: Found error trace [2018-06-25 08:53:21,205 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:53:21,205 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:53:21,205 INFO ]: Analyzing trace with hash -1531655450, now seen corresponding path program 2 times [2018-06-25 08:53:21,205 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:53:21,205 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:53:21,206 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:21,206 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:53:21,206 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:21,233 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:53:21,421 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:53:21,421 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:53:21,421 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 [2018-06-25 08:53:21,427 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 08:53:21,464 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 08:53:21,464 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:53:21,468 INFO ]: Computing forward predicates... [2018-06-25 08:53:21,693 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:53:21,723 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:53:21,723 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2018-06-25 08:53:21,723 INFO ]: Interpolant automaton has 12 states [2018-06-25 08:53:21,723 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 08:53:21,723 INFO ]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2018-06-25 08:53:21,723 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 12 states. [2018-06-25 08:53:21,950 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:53:21,950 INFO ]: Finished difference Result 18 states and 18 transitions. [2018-06-25 08:53:21,950 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-25 08:53:21,950 INFO ]: Start accepts. Automaton has 12 states. Word has length 13 [2018-06-25 08:53:21,950 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:53:21,951 INFO ]: With dead ends: 18 [2018-06-25 08:53:21,951 INFO ]: Without dead ends: 17 [2018-06-25 08:53:21,951 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2018-06-25 08:53:21,951 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-25 08:53:21,953 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 16. [2018-06-25 08:53:21,953 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-25 08:53:21,953 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-06-25 08:53:21,953 INFO ]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-06-25 08:53:21,953 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:53:21,953 INFO ]: Abstraction has 16 states and 16 transitions. [2018-06-25 08:53:21,953 INFO ]: Interpolant automaton has 12 states. [2018-06-25 08:53:21,953 INFO ]: Start isEmpty. Operand 16 states and 16 transitions. [2018-06-25 08:53:21,954 INFO ]: Finished isEmpty. Found accepting run of length 16 [2018-06-25 08:53:21,954 INFO ]: Found error trace [2018-06-25 08:53:21,954 INFO ]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:53:21,954 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:53:21,954 INFO ]: Analyzing trace with hash -1500925396, now seen corresponding path program 3 times [2018-06-25 08:53:21,954 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:53:21,954 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:53:21,955 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:21,955 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 08:53:21,955 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:22,005 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:53:22,537 INFO ]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:53:22,537 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:53:22,537 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 [2018-06-25 08:53:22,549 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 08:53:22,598 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-25 08:53:22,598 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:53:22,602 INFO ]: Computing forward predicates... [2018-06-25 08:53:22,784 INFO ]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:53:22,804 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:53:22,804 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2018-06-25 08:53:22,804 INFO ]: Interpolant automaton has 13 states [2018-06-25 08:53:22,804 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-25 08:53:22,804 INFO ]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2018-06-25 08:53:22,804 INFO ]: Start difference. First operand 16 states and 16 transitions. Second operand 13 states. [2018-06-25 08:53:23,141 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:53:23,141 INFO ]: Finished difference Result 20 states and 20 transitions. [2018-06-25 08:53:23,141 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-25 08:53:23,141 INFO ]: Start accepts. Automaton has 13 states. Word has length 15 [2018-06-25 08:53:23,142 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:53:23,142 INFO ]: With dead ends: 20 [2018-06-25 08:53:23,142 INFO ]: Without dead ends: 19 [2018-06-25 08:53:23,142 INFO ]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2018-06-25 08:53:23,142 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-25 08:53:23,144 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 18. [2018-06-25 08:53:23,144 INFO ]: Start removeUnreachable. Operand 18 states. [2018-06-25 08:53:23,145 INFO ]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-06-25 08:53:23,145 INFO ]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-06-25 08:53:23,145 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:53:23,145 INFO ]: Abstraction has 18 states and 18 transitions. [2018-06-25 08:53:23,145 INFO ]: Interpolant automaton has 13 states. [2018-06-25 08:53:23,145 INFO ]: Start isEmpty. Operand 18 states and 18 transitions. [2018-06-25 08:53:23,145 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-25 08:53:23,145 INFO ]: Found error trace [2018-06-25 08:53:23,145 INFO ]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:53:23,145 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:53:23,145 INFO ]: Analyzing trace with hash -2034114574, now seen corresponding path program 4 times [2018-06-25 08:53:23,145 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:53:23,145 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:53:23,146 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:23,146 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 08:53:23,146 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:53:23,178 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:53:23,784 WARN ]: Spent 160.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 25 [2018-06-25 08:53:23,803 INFO ]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-25 08:53:23,803 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:53:23,803 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 08:53:23,809 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 08:53:23,846 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 08:53:23,846 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:53:23,853 INFO ]: Computing forward predicates... [2018-06-25 08:53:24,301 INFO ]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:53:24,320 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:53:24,320 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 21 [2018-06-25 08:53:24,320 INFO ]: Interpolant automaton has 21 states [2018-06-25 08:53:24,320 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-25 08:53:24,320 INFO ]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2018-06-25 08:53:24,320 INFO ]: Start difference. First operand 18 states and 18 transitions. Second operand 21 states. [2018-06-25 08:53:24,946 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:53:24,946 INFO ]: Finished difference Result 18 states and 18 transitions. [2018-06-25 08:53:24,946 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-06-25 08:53:24,946 INFO ]: Start accepts. Automaton has 21 states. Word has length 17 [2018-06-25 08:53:24,946 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:53:24,947 INFO ]: With dead ends: 18 [2018-06-25 08:53:24,947 INFO ]: Without dead ends: 0 [2018-06-25 08:53:24,947 INFO ]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=228, Invalid=962, Unknown=0, NotChecked=0, Total=1190 [2018-06-25 08:53:24,947 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 08:53:24,947 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 08:53:24,948 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 08:53:24,948 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 08:53:24,949 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-25 08:53:24,949 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:53:24,949 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 08:53:24,949 INFO ]: Interpolant automaton has 21 states. [2018-06-25 08:53:24,949 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 08:53:24,949 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 08:53:24,953 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:53:24 BoogieIcfgContainer [2018-06-25 08:53:24,953 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:53:24,954 INFO ]: Toolchain (without parser) took 7212.58 ms. Allocated memory was 306.7 MB in the beginning and 375.9 MB in the end (delta: 69.2 MB). Free memory was 263.1 MB in the beginning and 226.7 MB in the end (delta: 36.4 MB). Peak memory consumption was 105.6 MB. Max. memory is 3.6 GB. [2018-06-25 08:53:24,955 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:53:24,955 INFO ]: ChcToBoogie took 54.95 ms. Allocated memory is still 306.7 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:53:24,956 INFO ]: Boogie Preprocessor took 28.35 ms. Allocated memory is still 306.7 MB. Free memory was 260.1 MB in the beginning and 259.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:53:24,956 INFO ]: RCFGBuilder took 235.32 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 249.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 3.6 GB. [2018-06-25 08:53:24,957 INFO ]: TraceAbstraction took 6884.94 ms. Allocated memory was 306.7 MB in the beginning and 375.9 MB in the end (delta: 69.2 MB). Free memory was 249.9 MB in the beginning and 226.7 MB in the end (delta: 23.3 MB). Peak memory consumption was 92.5 MB. Max. memory is 3.6 GB. [2018-06-25 08:53:24,960 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 54.95 ms. Allocated memory is still 306.7 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 28.35 ms. Allocated memory is still 306.7 MB. Free memory was 260.1 MB in the beginning and 259.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 235.32 ms. Allocated memory is still 306.7 MB. Free memory was 259.1 MB in the beginning and 249.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6884.94 ms. Allocated memory was 306.7 MB in the beginning and 375.9 MB in the end (delta: 69.2 MB). Free memory was 249.9 MB in the beginning and 226.7 MB in the end (delta: 23.3 MB). Peak memory consumption was 92.5 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 2 procedures, 12 locations, 1 error locations. SAFE Result, 6.8s OverallTime, 7 OverallIterations, 5 TraceHistogramMax, 2.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 55 SDtfs, 26 SDslu, 294 SDs, 0 SdLazy, 399 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 154 GetRequests, 49 SyntacticMatches, 8 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 6 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 149 NumberOfCodeBlocks, 149 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 24014 SizeOfPredicates, 174 NumberOfNonLiveVariables, 816 ConjunctsInSsa, 463 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 1/82 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/barthe_merged_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-53-24-971.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/barthe_merged_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-53-24-971.csv Received shutdown request...