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/HOLA/16.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 08:42:55,172 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 08:42:55,174 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 08:42:55,188 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 08:42:55,188 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 08:42:55,189 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 08:42:55,191 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 08:42:55,192 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 08:42:55,194 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 08:42:55,195 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 08:42:55,196 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 08:42:55,196 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 08:42:55,197 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 08:42:55,198 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 08:42:55,198 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 08:42:55,199 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 08:42:55,201 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 08:42:55,203 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 08:42:55,204 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 08:42:55,205 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 08:42:55,206 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 08:42:55,209 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 08:42:55,209 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 08:42:55,209 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 08:42:55,210 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 08:42:55,211 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 08:42:55,211 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 08:42:55,212 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 08:42:55,213 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 08:42:55,213 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 08:42:55,214 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 08:42:55,215 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 08:42:55,215 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 08:42:55,216 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 08:42:55,216 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 08:42:55,217 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 08:42:55,233 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 08:42:55,234 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 08:42:55,234 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 08:42:55,234 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 08:42:55,235 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 08:42:55,235 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 08:42:55,235 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 08:42:55,236 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 08:42:55,236 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 08:42:55,236 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 08:42:55,236 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 08:42:55,237 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 08:42:55,240 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:42:55,240 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 08:42:55,240 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 08:42:55,240 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 08:42:55,241 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 08:42:55,241 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 08:42:55,241 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 08:42:55,241 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 08:42:55,241 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 08:42:55,243 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 08:42:55,243 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 08:42:55,281 INFO ]: Repository-Root is: /tmp [2018-06-25 08:42:55,296 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 08:42:55,301 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 08:42:55,302 INFO ]: Initializing SmtParser... [2018-06-25 08:42:55,303 INFO ]: SmtParser initialized [2018-06-25 08:42:55,303 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/16.c.smt2 [2018-06-25 08:42:55,304 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 08:42:55,393 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/16.c.smt2 unknown [2018-06-25 08:42:55,843 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/16.c.smt2 [2018-06-25 08:42:55,847 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 08:42:55,853 INFO ]: Walking toolchain with 4 elements. [2018-06-25 08:42:55,853 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 08:42:55,853 INFO ]: Initializing ChcToBoogie... [2018-06-25 08:42:55,853 INFO ]: ChcToBoogie initialized [2018-06-25 08:42:55,856 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:42:55" (1/1) ... [2018-06-25 08:42:55,921 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:42:55 Unit [2018-06-25 08:42:55,921 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 08:42:55,921 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 08:42:55,921 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 08:42:55,922 INFO ]: Boogie Preprocessor initialized [2018-06-25 08:42:55,941 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:42:55" (1/1) ... [2018-06-25 08:42:55,941 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:42:55" (1/1) ... [2018-06-25 08:42:55,951 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:42:55" (1/1) ... [2018-06-25 08:42:55,951 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:42:55" (1/1) ... [2018-06-25 08:42:55,958 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:42:55" (1/1) ... [2018-06-25 08:42:55,968 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:42:55" (1/1) ... [2018-06-25 08:42:55,969 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:42:55" (1/1) ... [2018-06-25 08:42:55,972 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 08:42:55,979 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 08:42:55,979 INFO ]: Initializing RCFGBuilder... [2018-06-25 08:42:55,979 INFO ]: RCFGBuilder initialized [2018-06-25 08:42:55,980 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:42:55" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 08:42:55,993 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 08:42:55,993 INFO ]: Found specification of procedure gotoProc [2018-06-25 08:42:55,993 INFO ]: Found implementation of procedure gotoProc [2018-06-25 08:42:55,993 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 08:42:55,994 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 08:42:55,994 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 08:42:56,450 INFO ]: Using library mode [2018-06-25 08:42:56,451 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:42:56 BoogieIcfgContainer [2018-06-25 08:42:56,451 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 08:42:56,452 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 08:42:56,452 INFO ]: Initializing TraceAbstraction... [2018-06-25 08:42:56,455 INFO ]: TraceAbstraction initialized [2018-06-25 08:42:56,455 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 08:42:55" (1/3) ... [2018-06-25 08:42:56,455 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c79ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 08:42:56, skipping insertion in model container [2018-06-25 08:42:56,456 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 08:42:55" (2/3) ... [2018-06-25 08:42:56,456 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c79ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 08:42:56, skipping insertion in model container [2018-06-25 08:42:56,456 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 08:42:56" (3/3) ... [2018-06-25 08:42:56,457 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 08:42:56,464 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 08:42:56,471 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 08:42:56,505 INFO ]: Using default assertion order modulation [2018-06-25 08:42:56,505 INFO ]: Interprodecural is true [2018-06-25 08:42:56,505 INFO ]: Hoare is false [2018-06-25 08:42:56,505 INFO ]: Compute interpolants for FPandBP [2018-06-25 08:42:56,505 INFO ]: Backedges is TWOTRACK [2018-06-25 08:42:56,505 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 08:42:56,506 INFO ]: Difference is false [2018-06-25 08:42:56,506 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 08:42:56,506 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 08:42:56,518 INFO ]: Start isEmpty. Operand 26 states. [2018-06-25 08:42:56,530 INFO ]: Finished isEmpty. Found accepting run of length 20 [2018-06-25 08:42:56,530 INFO ]: Found error trace [2018-06-25 08:42:56,531 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:42:56,531 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:42:56,538 INFO ]: Analyzing trace with hash 1853849550, now seen corresponding path program 1 times [2018-06-25 08:42:56,540 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:42:56,540 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:42:56,579 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:42:56,579 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:42:56,579 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:42:56,657 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:42:57,270 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:42:57,272 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:42:57,272 INFO ]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-06-25 08:42:57,274 INFO ]: Interpolant automaton has 13 states [2018-06-25 08:42:57,289 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-25 08:42:57,290 INFO ]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-06-25 08:42:57,293 INFO ]: Start difference. First operand 26 states. Second operand 13 states. [2018-06-25 08:42:58,059 WARN ]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2018-06-25 08:42:58,423 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:42:58,423 INFO ]: Finished difference Result 33 states and 36 transitions. [2018-06-25 08:42:58,423 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-06-25 08:42:58,424 INFO ]: Start accepts. Automaton has 13 states. Word has length 19 [2018-06-25 08:42:58,425 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:42:58,431 INFO ]: With dead ends: 33 [2018-06-25 08:42:58,431 INFO ]: Without dead ends: 30 [2018-06-25 08:42:58,433 INFO ]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2018-06-25 08:42:58,450 INFO ]: Start minimizeSevpa. Operand 30 states. [2018-06-25 08:42:58,467 INFO ]: Finished minimizeSevpa. Reduced states from 30 to 26. [2018-06-25 08:42:58,468 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-25 08:42:58,469 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2018-06-25 08:42:58,470 INFO ]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 19 [2018-06-25 08:42:58,470 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:42:58,470 INFO ]: Abstraction has 26 states and 28 transitions. [2018-06-25 08:42:58,470 INFO ]: Interpolant automaton has 13 states. [2018-06-25 08:42:58,470 INFO ]: Start isEmpty. Operand 26 states and 28 transitions. [2018-06-25 08:42:58,471 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-25 08:42:58,471 INFO ]: Found error trace [2018-06-25 08:42:58,471 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:42:58,471 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:42:58,471 INFO ]: Analyzing trace with hash -1317888634, now seen corresponding path program 1 times [2018-06-25 08:42:58,471 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:42:58,471 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:42:58,472 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:42:58,472 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:42:58,472 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:42:58,522 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:42:58,606 INFO ]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:42:58,606 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:42:58,606 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-25 08:42:58,608 INFO ]: Interpolant automaton has 6 states [2018-06-25 08:42:58,608 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 08:42:58,608 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-25 08:42:58,608 INFO ]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2018-06-25 08:42:58,782 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:42:58,782 INFO ]: Finished difference Result 37 states and 40 transitions. [2018-06-25 08:42:58,783 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 08:42:58,783 INFO ]: Start accepts. Automaton has 6 states. Word has length 23 [2018-06-25 08:42:58,783 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:42:58,786 INFO ]: With dead ends: 37 [2018-06-25 08:42:58,786 INFO ]: Without dead ends: 36 [2018-06-25 08:42:58,787 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2018-06-25 08:42:58,787 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-25 08:42:58,791 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 27. [2018-06-25 08:42:58,791 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-25 08:42:58,792 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2018-06-25 08:42:58,792 INFO ]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 23 [2018-06-25 08:42:58,792 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:42:58,792 INFO ]: Abstraction has 27 states and 29 transitions. [2018-06-25 08:42:58,792 INFO ]: Interpolant automaton has 6 states. [2018-06-25 08:42:58,792 INFO ]: Start isEmpty. Operand 27 states and 29 transitions. [2018-06-25 08:42:58,793 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-25 08:42:58,793 INFO ]: Found error trace [2018-06-25 08:42:58,793 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:42:58,793 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:42:58,793 INFO ]: Analyzing trace with hash -1009851066, now seen corresponding path program 1 times [2018-06-25 08:42:58,793 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:42:58,793 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:42:58,794 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:42:58,794 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:42:58,794 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:42:58,820 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:42:59,171 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:42:59,171 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:42:59,171 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 08:42:59,179 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:42:59,261 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:42:59,273 INFO ]: Computing forward predicates... [2018-06-25 08:43:00,076 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:43:00,107 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:43:00,108 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2018-06-25 08:43:00,108 INFO ]: Interpolant automaton has 30 states [2018-06-25 08:43:00,108 INFO ]: Constructing interpolant automaton starting with 30 interpolants. [2018-06-25 08:43:00,108 INFO ]: CoverageRelationStatistics Valid=66, Invalid=804, Unknown=0, NotChecked=0, Total=870 [2018-06-25 08:43:00,109 INFO ]: Start difference. First operand 27 states and 29 transitions. Second operand 30 states. [2018-06-25 08:43:00,937 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2018-06-25 08:43:01,760 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 70 [2018-06-25 08:43:02,061 WARN ]: Spent 158.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2018-06-25 08:43:02,156 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:43:02,156 INFO ]: Finished difference Result 68 states and 75 transitions. [2018-06-25 08:43:02,156 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-25 08:43:02,156 INFO ]: Start accepts. Automaton has 30 states. Word has length 23 [2018-06-25 08:43:02,157 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:43:02,158 INFO ]: With dead ends: 68 [2018-06-25 08:43:02,158 INFO ]: Without dead ends: 65 [2018-06-25 08:43:02,159 INFO ]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=493, Invalid=1859, Unknown=0, NotChecked=0, Total=2352 [2018-06-25 08:43:02,159 INFO ]: Start minimizeSevpa. Operand 65 states. [2018-06-25 08:43:02,165 INFO ]: Finished minimizeSevpa. Reduced states from 65 to 39. [2018-06-25 08:43:02,165 INFO ]: Start removeUnreachable. Operand 39 states. [2018-06-25 08:43:02,166 INFO ]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-06-25 08:43:02,166 INFO ]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 23 [2018-06-25 08:43:02,166 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:43:02,166 INFO ]: Abstraction has 39 states and 41 transitions. [2018-06-25 08:43:02,166 INFO ]: Interpolant automaton has 30 states. [2018-06-25 08:43:02,166 INFO ]: Start isEmpty. Operand 39 states and 41 transitions. [2018-06-25 08:43:02,167 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-25 08:43:02,167 INFO ]: Found error trace [2018-06-25 08:43:02,167 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:43:02,167 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:43:02,167 INFO ]: Analyzing trace with hash 648575169, now seen corresponding path program 1 times [2018-06-25 08:43:02,167 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:43:02,167 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:43:02,168 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:43:02,168 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:43:02,168 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:43:02,188 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:43:02,402 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:43:02,402 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:43:02,402 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 08:43:02,417 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:43:02,468 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:43:02,472 INFO ]: Computing forward predicates... [2018-06-25 08:43:02,833 INFO ]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:43:02,853 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:43:02,854 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2018-06-25 08:43:02,854 INFO ]: Interpolant automaton has 30 states [2018-06-25 08:43:02,854 INFO ]: Constructing interpolant automaton starting with 30 interpolants. [2018-06-25 08:43:02,854 INFO ]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2018-06-25 08:43:02,855 INFO ]: Start difference. First operand 39 states and 41 transitions. Second operand 30 states. [2018-06-25 08:43:03,857 WARN ]: Spent 264.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2018-06-25 08:43:04,343 WARN ]: Spent 102.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2018-06-25 08:43:04,929 WARN ]: Spent 109.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2018-06-25 08:43:05,011 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:43:05,011 INFO ]: Finished difference Result 71 states and 78 transitions. [2018-06-25 08:43:05,013 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-06-25 08:43:05,013 INFO ]: Start accepts. Automaton has 30 states. Word has length 23 [2018-06-25 08:43:05,013 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:43:05,014 INFO ]: With dead ends: 71 [2018-06-25 08:43:05,014 INFO ]: Without dead ends: 68 [2018-06-25 08:43:05,015 INFO ]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=492, Invalid=1860, Unknown=0, NotChecked=0, Total=2352 [2018-06-25 08:43:05,015 INFO ]: Start minimizeSevpa. Operand 68 states. [2018-06-25 08:43:05,020 INFO ]: Finished minimizeSevpa. Reduced states from 68 to 30. [2018-06-25 08:43:05,020 INFO ]: Start removeUnreachable. Operand 30 states. [2018-06-25 08:43:05,021 INFO ]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2018-06-25 08:43:05,021 INFO ]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 23 [2018-06-25 08:43:05,023 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:43:05,023 INFO ]: Abstraction has 30 states and 32 transitions. [2018-06-25 08:43:05,023 INFO ]: Interpolant automaton has 30 states. [2018-06-25 08:43:05,023 INFO ]: Start isEmpty. Operand 30 states and 32 transitions. [2018-06-25 08:43:05,024 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-25 08:43:05,024 INFO ]: Found error trace [2018-06-25 08:43:05,024 INFO ]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:43:05,024 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:43:05,024 INFO ]: Analyzing trace with hash 1562543870, now seen corresponding path program 1 times [2018-06-25 08:43:05,024 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:43:05,024 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:43:05,025 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:43:05,025 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:43:05,025 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:43:05,044 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:43:05,128 INFO ]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:43:05,128 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 08:43:05,128 INFO ]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-06-25 08:43:05,128 INFO ]: Interpolant automaton has 6 states [2018-06-25 08:43:05,129 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 08:43:05,129 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-25 08:43:05,129 INFO ]: Start difference. First operand 30 states and 32 transitions. Second operand 6 states. [2018-06-25 08:43:05,170 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:43:05,170 INFO ]: Finished difference Result 30 states and 31 transitions. [2018-06-25 08:43:05,171 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 08:43:05,171 INFO ]: Start accepts. Automaton has 6 states. Word has length 27 [2018-06-25 08:43:05,171 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:43:05,171 INFO ]: With dead ends: 30 [2018-06-25 08:43:05,171 INFO ]: Without dead ends: 29 [2018-06-25 08:43:05,171 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-06-25 08:43:05,171 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-25 08:43:05,173 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-25 08:43:05,173 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-25 08:43:05,174 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-06-25 08:43:05,174 INFO ]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 27 [2018-06-25 08:43:05,174 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:43:05,174 INFO ]: Abstraction has 29 states and 30 transitions. [2018-06-25 08:43:05,174 INFO ]: Interpolant automaton has 6 states. [2018-06-25 08:43:05,174 INFO ]: Start isEmpty. Operand 29 states and 30 transitions. [2018-06-25 08:43:05,175 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-25 08:43:05,175 INFO ]: Found error trace [2018-06-25 08:43:05,175 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:43:05,175 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:43:05,175 INFO ]: Analyzing trace with hash 1870581438, now seen corresponding path program 2 times [2018-06-25 08:43:05,175 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:43:05,175 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:43:05,176 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:43:05,176 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 08:43:05,176 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:43:05,200 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:43:05,462 INFO ]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-25 08:43:05,462 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:43:05,462 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 08:43:05,467 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 08:43:05,535 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 08:43:05,535 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:43:05,542 INFO ]: Computing forward predicates... [2018-06-25 08:43:06,143 INFO ]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:43:06,177 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:43:06,177 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 35 [2018-06-25 08:43:06,177 INFO ]: Interpolant automaton has 35 states [2018-06-25 08:43:06,177 INFO ]: Constructing interpolant automaton starting with 35 interpolants. [2018-06-25 08:43:06,178 INFO ]: CoverageRelationStatistics Valid=77, Invalid=1113, Unknown=0, NotChecked=0, Total=1190 [2018-06-25 08:43:06,178 INFO ]: Start difference. First operand 29 states and 30 transitions. Second operand 35 states. [2018-06-25 08:43:07,821 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2018-06-25 08:43:08,053 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 77 [2018-06-25 08:43:08,316 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:43:08,316 INFO ]: Finished difference Result 58 states and 59 transitions. [2018-06-25 08:43:08,316 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-06-25 08:43:08,316 INFO ]: Start accepts. Automaton has 35 states. Word has length 27 [2018-06-25 08:43:08,317 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:43:08,317 INFO ]: With dead ends: 58 [2018-06-25 08:43:08,317 INFO ]: Without dead ends: 28 [2018-06-25 08:43:08,318 INFO ]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=675, Invalid=2865, Unknown=0, NotChecked=0, Total=3540 [2018-06-25 08:43:08,318 INFO ]: Start minimizeSevpa. Operand 28 states. [2018-06-25 08:43:08,320 INFO ]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-06-25 08:43:08,320 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-25 08:43:08,320 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2018-06-25 08:43:08,320 INFO ]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 27 [2018-06-25 08:43:08,320 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:43:08,321 INFO ]: Abstraction has 28 states and 28 transitions. [2018-06-25 08:43:08,321 INFO ]: Interpolant automaton has 35 states. [2018-06-25 08:43:08,321 INFO ]: Start isEmpty. Operand 28 states and 28 transitions. [2018-06-25 08:43:08,321 INFO ]: Finished isEmpty. Found accepting run of length 28 [2018-06-25 08:43:08,321 INFO ]: Found error trace [2018-06-25 08:43:08,321 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 08:43:08,321 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 08:43:08,321 INFO ]: Analyzing trace with hash -602133319, now seen corresponding path program 2 times [2018-06-25 08:43:08,321 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 08:43:08,321 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 08:43:08,322 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:43:08,322 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 08:43:08,322 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 08:43:08,345 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:43:08,585 INFO ]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-25 08:43:08,586 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 08:43:08,586 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 08:43:08,592 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 08:43:08,640 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 08:43:08,640 INFO ]: Conjunction of SSA is unsat [2018-06-25 08:43:08,646 INFO ]: Computing forward predicates... [2018-06-25 08:43:09,177 INFO ]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 08:43:09,206 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 08:43:09,206 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 36 [2018-06-25 08:43:09,207 INFO ]: Interpolant automaton has 36 states [2018-06-25 08:43:09,207 INFO ]: Constructing interpolant automaton starting with 36 interpolants. [2018-06-25 08:43:09,207 INFO ]: CoverageRelationStatistics Valid=77, Invalid=1183, Unknown=0, NotChecked=0, Total=1260 [2018-06-25 08:43:09,207 INFO ]: Start difference. First operand 28 states and 28 transitions. Second operand 36 states. [2018-06-25 08:43:09,875 WARN ]: Spent 112.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2018-06-25 08:43:10,863 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2018-06-25 08:43:11,152 WARN ]: Spent 164.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 83 [2018-06-25 08:43:11,472 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 08:43:11,473 INFO ]: Finished difference Result 33 states and 33 transitions. [2018-06-25 08:43:11,473 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-06-25 08:43:11,473 INFO ]: Start accepts. Automaton has 36 states. Word has length 27 [2018-06-25 08:43:11,473 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 08:43:11,473 INFO ]: With dead ends: 33 [2018-06-25 08:43:11,473 INFO ]: Without dead ends: 0 [2018-06-25 08:43:11,474 INFO ]: 0 DeclaredPredicates, 72 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=679, Invalid=2981, Unknown=0, NotChecked=0, Total=3660 [2018-06-25 08:43:11,474 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 08:43:11,474 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 08:43:11,474 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 08:43:11,474 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 08:43:11,474 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-06-25 08:43:11,474 INFO ]: Finished accepts. word is rejected. [2018-06-25 08:43:11,474 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 08:43:11,474 INFO ]: Interpolant automaton has 36 states. [2018-06-25 08:43:11,474 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 08:43:11,474 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 08:43:11,479 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 08:43:11 BoogieIcfgContainer [2018-06-25 08:43:11,479 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 08:43:11,479 INFO ]: Toolchain (without parser) took 15631.40 ms. Allocated memory was 304.1 MB in the beginning and 547.9 MB in the end (delta: 243.8 MB). Free memory was 248.7 MB in the beginning and 389.3 MB in the end (delta: -140.7 MB). Peak memory consumption was 103.1 MB. Max. memory is 3.6 GB. [2018-06-25 08:43:11,480 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 08:43:11,480 INFO ]: ChcToBoogie took 67.85 ms. Allocated memory is still 304.1 MB. Free memory was 248.7 MB in the beginning and 246.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:43:11,480 INFO ]: Boogie Preprocessor took 50.14 ms. Allocated memory is still 304.1 MB. Free memory was 246.7 MB in the beginning and 244.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:43:11,480 INFO ]: RCFGBuilder took 471.80 ms. Allocated memory is still 304.1 MB. Free memory was 244.7 MB in the beginning and 222.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. [2018-06-25 08:43:11,481 INFO ]: TraceAbstraction took 15027.01 ms. Allocated memory was 304.1 MB in the beginning and 547.9 MB in the end (delta: 243.8 MB). Free memory was 222.7 MB in the beginning and 389.3 MB in the end (delta: -166.6 MB). Peak memory consumption was 77.2 MB. Max. memory is 3.6 GB. [2018-06-25 08:43:11,483 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 304.1 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 67.85 ms. Allocated memory is still 304.1 MB. Free memory was 248.7 MB in the beginning and 246.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 50.14 ms. Allocated memory is still 304.1 MB. Free memory was 246.7 MB in the beginning and 244.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 471.80 ms. Allocated memory is still 304.1 MB. Free memory was 244.7 MB in the beginning and 222.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 15027.01 ms. Allocated memory was 304.1 MB in the beginning and 547.9 MB in the end (delta: 243.8 MB). Free memory was 222.7 MB in the beginning and 389.3 MB in the end (delta: -166.6 MB). Peak memory consumption was 77.2 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, 26 locations, 1 error locations. SAFE Result, 14.9s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 9.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 131 SDtfs, 1256 SDslu, 2115 SDs, 0 SdLazy, 1491 SolverSat, 497 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 305 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 960 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 77 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 269 NumberOfCodeBlocks, 269 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 258 ConstructedInterpolants, 0 QuantifiedInterpolants, 32166 SizeOfPredicates, 240 NumberOfNonLiveVariables, 1750 ConjunctsInSsa, 254 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 14/49 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_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_08-43-11-492.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/16.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_08-43-11-492.csv Received shutdown request...