java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/reve/007-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:11:17,173 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:11:17,174 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:11:17,187 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:11:17,187 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:11:17,188 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:11:17,189 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:11:17,191 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:11:17,193 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:11:17,194 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:11:17,195 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:11:17,195 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:11:17,203 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:11:17,205 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:11:17,205 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:11:17,206 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:11:17,208 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:11:17,210 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:11:17,211 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:11:17,212 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:11:17,213 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:11:17,215 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:11:17,215 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:11:17,216 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:11:17,217 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:11:17,217 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:11:17,218 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:11:17,219 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:11:17,220 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:11:17,220 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:11:17,221 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:11:17,222 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:11:17,222 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:11:17,223 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:11:17,223 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:11:17,224 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:11:17,246 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:11:17,246 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:11:17,246 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:11:17,247 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:11:17,248 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:11:17,248 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:11:17,248 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:11:17,248 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:11:17,249 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:11:17,249 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:11:17,249 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:11:17,250 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:11:17,250 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:11:17,250 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:11:17,250 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:11:17,250 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:11:17,251 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:11:17,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:11:17,251 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:11:17,252 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:11:17,252 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:11:17,311 INFO ]: Repository-Root is: /tmp [2018-06-22 11:11:17,328 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:11:17,334 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:11:17,335 INFO ]: Initializing SmtParser... [2018-06-22 11:11:17,336 INFO ]: SmtParser initialized [2018-06-22 11:11:17,337 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/007-horn.smt2 [2018-06-22 11:11:17,338 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 11:11:17,432 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/007-horn.smt2 unknown [2018-06-22 11:11:17,626 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/007-horn.smt2 [2018-06-22 11:11:17,633 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:11:17,639 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:11:17,639 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:11:17,640 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:11:17,640 INFO ]: ChcToBoogie initialized [2018-06-22 11:11:17,643 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:11:17" (1/1) ... [2018-06-22 11:11:17,690 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:11:17 Unit [2018-06-22 11:11:17,690 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:11:17,694 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:11:17,694 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:11:17,694 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:11:17,717 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:11:17" (1/1) ... [2018-06-22 11:11:17,717 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:11:17" (1/1) ... [2018-06-22 11:11:17,724 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:11:17" (1/1) ... [2018-06-22 11:11:17,724 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:11:17" (1/1) ... [2018-06-22 11:11:17,727 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:11:17" (1/1) ... [2018-06-22 11:11:17,730 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:11:17" (1/1) ... [2018-06-22 11:11:17,731 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:11:17" (1/1) ... [2018-06-22 11:11:17,733 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:11:17,733 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:11:17,733 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:11:17,733 INFO ]: RCFGBuilder initialized [2018-06-22 11:11:17,738 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:11:17" (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) [2018-06-22 11:11:17,750 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:11:17,750 INFO ]: Found specification of procedure False [2018-06-22 11:11:17,750 INFO ]: Found implementation of procedure False [2018-06-22 11:11:17,750 INFO ]: Specification and implementation of procedure INV1 given in one single declaration [2018-06-22 11:11:17,750 INFO ]: Found specification of procedure INV1 [2018-06-22 11:11:17,750 INFO ]: Found implementation of procedure INV1 [2018-06-22 11:11:17,750 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:11:17,750 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:11:17,750 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:11:17,955 INFO ]: Using library mode [2018-06-22 11:11:17,955 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:11:17 BoogieIcfgContainer [2018-06-22 11:11:17,956 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:11:17,957 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:11:17,957 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:11:17,968 INFO ]: TraceAbstraction initialized [2018-06-22 11:11:17,968 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:11:17" (1/3) ... [2018-06-22 11:11:17,969 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28aa507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:11:17, skipping insertion in model container [2018-06-22 11:11:17,969 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:11:17" (2/3) ... [2018-06-22 11:11:17,969 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28aa507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:11:17, skipping insertion in model container [2018-06-22 11:11:17,969 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:11:17" (3/3) ... [2018-06-22 11:11:17,971 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:11:17,990 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:11:18,006 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:11:18,071 INFO ]: Using default assertion order modulation [2018-06-22 11:11:18,072 INFO ]: Interprodecural is true [2018-06-22 11:11:18,072 INFO ]: Hoare is false [2018-06-22 11:11:18,072 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:11:18,072 INFO ]: Backedges is TWOTRACK [2018-06-22 11:11:18,072 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:11:18,072 INFO ]: Difference is false [2018-06-22 11:11:18,072 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:11:18,072 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:11:18,099 INFO ]: Start isEmpty. Operand 15 states. [2018-06-22 11:11:18,133 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:11:18,133 INFO ]: Found error trace [2018-06-22 11:11:18,134 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:18,134 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:18,140 INFO ]: Analyzing trace with hash -1265914020, now seen corresponding path program 1 times [2018-06-22 11:11:18,142 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:18,143 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:18,185 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:18,185 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:18,185 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:18,229 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:18,299 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:11:18,301 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:11:18,301 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:11:18,302 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:11:18,313 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:11:18,313 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:11:18,315 INFO ]: Start difference. First operand 15 states. Second operand 4 states. [2018-06-22 11:11:18,466 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:18,466 INFO ]: Finished difference Result 15 states and 22 transitions. [2018-06-22 11:11:18,466 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:11:18,468 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:11:18,468 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:18,485 INFO ]: With dead ends: 15 [2018-06-22 11:11:18,485 INFO ]: Without dead ends: 15 [2018-06-22 11:11:18,486 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:11:18,502 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 11:11:18,535 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 11:11:18,537 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:11:18,538 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2018-06-22 11:11:18,539 INFO ]: Start accepts. Automaton has 15 states and 22 transitions. Word has length 9 [2018-06-22 11:11:18,540 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:18,540 INFO ]: Abstraction has 15 states and 22 transitions. [2018-06-22 11:11:18,540 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:11:18,540 INFO ]: Start isEmpty. Operand 15 states and 22 transitions. [2018-06-22 11:11:18,541 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:11:18,541 INFO ]: Found error trace [2018-06-22 11:11:18,542 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:18,542 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:18,542 INFO ]: Analyzing trace with hash -1987307158, now seen corresponding path program 1 times [2018-06-22 11:11:18,542 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:18,542 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:18,543 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:18,543 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:18,543 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:18,555 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:18,607 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:11:18,608 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:11:18,608 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:11:18,609 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:11:18,609 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:11:18,610 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:11:18,610 INFO ]: Start difference. First operand 15 states and 22 transitions. Second operand 4 states. [2018-06-22 11:11:18,953 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:18,953 INFO ]: Finished difference Result 24 states and 43 transitions. [2018-06-22 11:11:18,954 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:11:18,954 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 11:11:18,954 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:18,955 INFO ]: With dead ends: 24 [2018-06-22 11:11:18,955 INFO ]: Without dead ends: 24 [2018-06-22 11:11:18,956 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:11:18,956 INFO ]: Start minimizeSevpa. Operand 24 states. [2018-06-22 11:11:18,972 INFO ]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-06-22 11:11:18,973 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-22 11:11:18,974 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 38 transitions. [2018-06-22 11:11:18,974 INFO ]: Start accepts. Automaton has 22 states and 38 transitions. Word has length 13 [2018-06-22 11:11:18,974 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:18,974 INFO ]: Abstraction has 22 states and 38 transitions. [2018-06-22 11:11:18,974 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:11:18,974 INFO ]: Start isEmpty. Operand 22 states and 38 transitions. [2018-06-22 11:11:18,975 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:11:18,975 INFO ]: Found error trace [2018-06-22 11:11:18,975 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:18,975 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:18,976 INFO ]: Analyzing trace with hash 1424131422, now seen corresponding path program 1 times [2018-06-22 11:11:18,977 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:18,977 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:18,978 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:18,978 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:18,978 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:19,002 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:19,121 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:11:19,122 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:11:19,122 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:11:19,129 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:19,155 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:19,163 INFO ]: Computing forward predicates... [2018-06-22 11:11:19,390 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:11:19,415 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:11:19,415 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 11:11:19,416 INFO ]: Interpolant automaton has 10 states [2018-06-22 11:11:19,416 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 11:11:19,416 INFO ]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:11:19,416 INFO ]: Start difference. First operand 22 states and 38 transitions. Second operand 10 states. [2018-06-22 11:11:20,504 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:20,504 INFO ]: Finished difference Result 48 states and 87 transitions. [2018-06-22 11:11:20,505 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:11:20,505 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 11:11:20,505 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:20,507 INFO ]: With dead ends: 48 [2018-06-22 11:11:20,507 INFO ]: Without dead ends: 48 [2018-06-22 11:11:20,508 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:11:20,508 INFO ]: Start minimizeSevpa. Operand 48 states. [2018-06-22 11:11:20,521 INFO ]: Finished minimizeSevpa. Reduced states from 48 to 30. [2018-06-22 11:11:20,521 INFO ]: Start removeUnreachable. Operand 30 states. [2018-06-22 11:11:20,522 INFO ]: Finished removeUnreachable. Reduced from 30 states to 30 states and 56 transitions. [2018-06-22 11:11:20,522 INFO ]: Start accepts. Automaton has 30 states and 56 transitions. Word has length 13 [2018-06-22 11:11:20,522 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:20,522 INFO ]: Abstraction has 30 states and 56 transitions. [2018-06-22 11:11:20,522 INFO ]: Interpolant automaton has 10 states. [2018-06-22 11:11:20,522 INFO ]: Start isEmpty. Operand 30 states and 56 transitions. [2018-06-22 11:11:20,523 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:11:20,523 INFO ]: Found error trace [2018-06-22 11:11:20,523 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:20,524 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:20,524 INFO ]: Analyzing trace with hash -1812397216, now seen corresponding path program 2 times [2018-06-22 11:11:20,524 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:20,524 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:20,525 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:20,525 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:20,525 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:20,539 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:20,675 INFO ]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 11:11:20,675 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:11:20,675 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-22 11:11:20,675 INFO ]: Interpolant automaton has 5 states [2018-06-22 11:11:20,676 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 11:11:20,676 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:11:20,676 INFO ]: Start difference. First operand 30 states and 56 transitions. Second operand 5 states. [2018-06-22 11:11:20,761 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:20,761 INFO ]: Finished difference Result 44 states and 83 transitions. [2018-06-22 11:11:20,762 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:11:20,762 INFO ]: Start accepts. Automaton has 5 states. Word has length 17 [2018-06-22 11:11:20,762 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:20,765 INFO ]: With dead ends: 44 [2018-06-22 11:11:20,765 INFO ]: Without dead ends: 44 [2018-06-22 11:11:20,765 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:11:20,765 INFO ]: Start minimizeSevpa. Operand 44 states. [2018-06-22 11:11:20,775 INFO ]: Finished minimizeSevpa. Reduced states from 44 to 34. [2018-06-22 11:11:20,775 INFO ]: Start removeUnreachable. Operand 34 states. [2018-06-22 11:11:20,777 INFO ]: Finished removeUnreachable. Reduced from 34 states to 34 states and 66 transitions. [2018-06-22 11:11:20,777 INFO ]: Start accepts. Automaton has 34 states and 66 transitions. Word has length 17 [2018-06-22 11:11:20,777 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:20,777 INFO ]: Abstraction has 34 states and 66 transitions. [2018-06-22 11:11:20,777 INFO ]: Interpolant automaton has 5 states. [2018-06-22 11:11:20,777 INFO ]: Start isEmpty. Operand 34 states and 66 transitions. [2018-06-22 11:11:20,779 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:11:20,779 INFO ]: Found error trace [2018-06-22 11:11:20,779 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:20,779 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:20,779 INFO ]: Analyzing trace with hash -1605475980, now seen corresponding path program 1 times [2018-06-22 11:11:20,779 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:20,779 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:20,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:20,780 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:11:20,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:20,788 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:20,817 INFO ]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:11:20,817 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:11:20,817 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:11:20,827 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:20,861 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:20,863 INFO ]: Computing forward predicates... [2018-06-22 11:11:20,892 INFO ]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:11:20,919 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:11:20,919 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 11:11:20,919 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:11:20,919 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:11:20,919 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:11:20,919 INFO ]: Start difference. First operand 34 states and 66 transitions. Second operand 4 states. [2018-06-22 11:11:21,040 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:21,040 INFO ]: Finished difference Result 47 states and 85 transitions. [2018-06-22 11:11:21,044 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:11:21,044 INFO ]: Start accepts. Automaton has 4 states. Word has length 21 [2018-06-22 11:11:21,044 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:21,046 INFO ]: With dead ends: 47 [2018-06-22 11:11:21,046 INFO ]: Without dead ends: 44 [2018-06-22 11:11:21,046 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:11:21,046 INFO ]: Start minimizeSevpa. Operand 44 states. [2018-06-22 11:11:21,056 INFO ]: Finished minimizeSevpa. Reduced states from 44 to 38. [2018-06-22 11:11:21,056 INFO ]: Start removeUnreachable. Operand 38 states. [2018-06-22 11:11:21,058 INFO ]: Finished removeUnreachable. Reduced from 38 states to 38 states and 68 transitions. [2018-06-22 11:11:21,058 INFO ]: Start accepts. Automaton has 38 states and 68 transitions. Word has length 21 [2018-06-22 11:11:21,058 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:21,058 INFO ]: Abstraction has 38 states and 68 transitions. [2018-06-22 11:11:21,058 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:11:21,058 INFO ]: Start isEmpty. Operand 38 states and 68 transitions. [2018-06-22 11:11:21,060 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:11:21,060 INFO ]: Found error trace [2018-06-22 11:11:21,060 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:21,060 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:21,060 INFO ]: Analyzing trace with hash 867136878, now seen corresponding path program 1 times [2018-06-22 11:11:21,060 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:21,060 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:21,061 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:21,061 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:21,061 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:21,085 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:21,168 INFO ]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 11:11:21,169 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:11:21,169 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 11:11:21,169 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:11:21,169 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:11:21,169 INFO ]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:11:21,169 INFO ]: Start difference. First operand 38 states and 68 transitions. Second operand 7 states. [2018-06-22 11:11:21,633 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:21,633 INFO ]: Finished difference Result 52 states and 90 transitions. [2018-06-22 11:11:21,636 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:11:21,636 INFO ]: Start accepts. Automaton has 7 states. Word has length 21 [2018-06-22 11:11:21,636 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:21,637 INFO ]: With dead ends: 52 [2018-06-22 11:11:21,638 INFO ]: Without dead ends: 50 [2018-06-22 11:11:21,638 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:11:21,638 INFO ]: Start minimizeSevpa. Operand 50 states. [2018-06-22 11:11:21,646 INFO ]: Finished minimizeSevpa. Reduced states from 50 to 40. [2018-06-22 11:11:21,647 INFO ]: Start removeUnreachable. Operand 40 states. [2018-06-22 11:11:21,648 INFO ]: Finished removeUnreachable. Reduced from 40 states to 40 states and 69 transitions. [2018-06-22 11:11:21,648 INFO ]: Start accepts. Automaton has 40 states and 69 transitions. Word has length 21 [2018-06-22 11:11:21,648 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:21,648 INFO ]: Abstraction has 40 states and 69 transitions. [2018-06-22 11:11:21,648 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:11:21,648 INFO ]: Start isEmpty. Operand 40 states and 69 transitions. [2018-06-22 11:11:21,650 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:11:21,650 INFO ]: Found error trace [2018-06-22 11:11:21,650 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:21,650 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:21,650 INFO ]: Analyzing trace with hash -1047669307, now seen corresponding path program 1 times [2018-06-22 11:11:21,650 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:21,650 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:21,651 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:21,651 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:21,651 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:21,664 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:21,846 INFO ]: Checked inductivity of 19 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-06-22 11:11:21,846 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:11:21,846 INFO ]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-06-22 11:11:21,846 INFO ]: Interpolant automaton has 7 states [2018-06-22 11:11:21,846 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 11:11:21,846 INFO ]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-22 11:11:21,846 INFO ]: Start difference. First operand 40 states and 69 transitions. Second operand 7 states. [2018-06-22 11:11:22,004 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:22,004 INFO ]: Finished difference Result 44 states and 56 transitions. [2018-06-22 11:11:22,005 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 11:11:22,005 INFO ]: Start accepts. Automaton has 7 states. Word has length 21 [2018-06-22 11:11:22,005 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:22,006 INFO ]: With dead ends: 44 [2018-06-22 11:11:22,006 INFO ]: Without dead ends: 31 [2018-06-22 11:11:22,006 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:11:22,007 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 11:11:22,011 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 29. [2018-06-22 11:11:22,011 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 11:11:22,011 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2018-06-22 11:11:22,012 INFO ]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 21 [2018-06-22 11:11:22,012 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:22,012 INFO ]: Abstraction has 29 states and 38 transitions. [2018-06-22 11:11:22,012 INFO ]: Interpolant automaton has 7 states. [2018-06-22 11:11:22,012 INFO ]: Start isEmpty. Operand 29 states and 38 transitions. [2018-06-22 11:11:22,013 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:11:22,013 INFO ]: Found error trace [2018-06-22 11:11:22,013 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:11:22,013 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:11:22,013 INFO ]: Analyzing trace with hash 439887470, now seen corresponding path program 2 times [2018-06-22 11:11:22,013 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:11:22,013 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:11:22,014 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:22,014 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:11:22,014 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:11:22,021 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:22,153 INFO ]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:11:22,153 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:11:22,153 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:11:22,171 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:11:22,210 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:11:22,210 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:11:22,212 INFO ]: Computing forward predicates... [2018-06-22 11:11:22,231 INFO ]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:11:22,262 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:11:22,262 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-06-22 11:11:22,263 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:11:22,263 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:11:22,263 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:11:22,263 INFO ]: Start difference. First operand 29 states and 38 transitions. Second operand 4 states. [2018-06-22 11:11:22,289 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:11:22,289 INFO ]: Finished difference Result 19 states and 25 transitions. [2018-06-22 11:11:22,289 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:11:22,289 INFO ]: Start accepts. Automaton has 4 states. Word has length 21 [2018-06-22 11:11:22,290 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:11:22,290 INFO ]: With dead ends: 19 [2018-06-22 11:11:22,290 INFO ]: Without dead ends: 0 [2018-06-22 11:11:22,290 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 11:11:22,290 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:11:22,290 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:11:22,290 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:11:22,290 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:11:22,290 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 11:11:22,290 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:11:22,290 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:11:22,290 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:11:22,290 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:11:22,290 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:11:22,295 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:11:22 BoogieIcfgContainer [2018-06-22 11:11:22,295 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:11:22,296 INFO ]: Toolchain (without parser) took 4662.74 ms. Allocated memory was 308.3 MB in the beginning and 340.3 MB in the end (delta: 32.0 MB). Free memory was 264.7 MB in the beginning and 312.2 MB in the end (delta: -47.5 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:11:22,297 INFO ]: SmtParser took 0.11 ms. Allocated memory is still 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:11:22,298 INFO ]: ChcToBoogie took 53.58 ms. Allocated memory is still 308.3 MB. Free memory was 264.7 MB in the beginning and 262.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:11:22,298 INFO ]: Boogie Preprocessor took 39.14 ms. Allocated memory is still 308.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:11:22,299 INFO ]: RCFGBuilder took 222.44 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 252.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:11:22,299 INFO ]: TraceAbstraction took 4338.33 ms. Allocated memory was 308.3 MB in the beginning and 340.3 MB in the end (delta: 32.0 MB). Free memory was 252.7 MB in the beginning and 312.2 MB in the end (delta: -59.5 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:11:22,302 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.11 ms. Allocated memory is still 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 53.58 ms. Allocated memory is still 308.3 MB. Free memory was 264.7 MB in the beginning and 262.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 39.14 ms. Allocated memory is still 308.3 MB. Free memory was 262.7 MB in the beginning and 260.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 222.44 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 252.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 4338.33 ms. Allocated memory was 308.3 MB in the beginning and 340.3 MB in the end (delta: 32.0 MB). Free memory was 252.7 MB in the beginning and 312.2 MB in the end (delta: -59.5 MB). There was no memory consumed. 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 3 procedures, 15 locations, 1 error locations. SAFE Result, 4.2s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 139 SDtfs, 34 SDslu, 210 SDs, 0 SdLazy, 349 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 48 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 191 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 180 ConstructedInterpolants, 2 QuantifiedInterpolants, 6880 SizeOfPredicates, 4 NumberOfNonLiveVariables, 337 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 125/133 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/007-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-11-22-313.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/007-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-11-22-313.csv Received shutdown request...