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/004-horn.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:09:06,102 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:09:06,105 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:09:06,119 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:09:06,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:09:06,120 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:09:06,121 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:09:06,125 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:09:06,126 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:09:06,128 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:09:06,129 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:09:06,129 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:09:06,130 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:09:06,133 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:09:06,134 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:09:06,135 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:09:06,136 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:09:06,146 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:09:06,147 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:09:06,148 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:09:06,149 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:09:06,154 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:09:06,154 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:09:06,154 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:09:06,155 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:09:06,156 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:09:06,159 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:09:06,159 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:09:06,160 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:09:06,161 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:09:06,161 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:09:06,166 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:09:06,166 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:09:06,167 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:09:06,168 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:09:06,168 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 11:09:06,186 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:09:06,186 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:09:06,186 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:09:06,187 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:09:06,188 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:09:06,188 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:09:06,188 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:09:06,188 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:09:06,188 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:09:06,189 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:09:06,189 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:09:06,189 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:09:06,189 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:09:06,189 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:09:06,190 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:09:06,190 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:09:06,190 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:09:06,190 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:09:06,190 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:09:06,192 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:09:06,192 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:09:06,242 INFO ]: Repository-Root is: /tmp [2018-06-22 11:09:06,256 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:09:06,261 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:09:06,263 INFO ]: Initializing SmtParser... [2018-06-22 11:09:06,263 INFO ]: SmtParser initialized [2018-06-22 11:09:06,264 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/reve/004-horn.smt2 [2018-06-22 11:09:06,265 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 11:09:06,355 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/reve/004-horn.smt2 unknown [2018-06-22 11:09:06,504 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/reve/004-horn.smt2 [2018-06-22 11:09:06,509 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:09:06,520 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:09:06,520 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:09:06,520 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:09:06,520 INFO ]: ChcToBoogie initialized [2018-06-22 11:09:06,524 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:09:06" (1/1) ... [2018-06-22 11:09:06,571 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:09:06 Unit [2018-06-22 11:09:06,571 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:09:06,574 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:09:06,574 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:09:06,574 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:09:06,596 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:09:06" (1/1) ... [2018-06-22 11:09:06,596 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:09:06" (1/1) ... [2018-06-22 11:09:06,604 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:09:06" (1/1) ... [2018-06-22 11:09:06,604 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:09:06" (1/1) ... [2018-06-22 11:09:06,607 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:09:06" (1/1) ... [2018-06-22 11:09:06,608 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:09:06" (1/1) ... [2018-06-22 11:09:06,610 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:09:06" (1/1) ... [2018-06-22 11:09:06,612 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:09:06,613 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:09:06,613 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:09:06,613 INFO ]: RCFGBuilder initialized [2018-06-22 11:09:06,614 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:09:06" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 11:09:06,628 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:09:06,628 INFO ]: Found specification of procedure False [2018-06-22 11:09:06,628 INFO ]: Found implementation of procedure False [2018-06-22 11:09:06,629 INFO ]: Specification and implementation of procedure INV1 given in one single declaration [2018-06-22 11:09:06,629 INFO ]: Found specification of procedure INV1 [2018-06-22 11:09:06,629 INFO ]: Found implementation of procedure INV1 [2018-06-22 11:09:06,629 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:09:06,629 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:09:06,629 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 11:09:06,987 INFO ]: Using library mode [2018-06-22 11:09:06,987 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:09:06 BoogieIcfgContainer [2018-06-22 11:09:06,988 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:09:06,988 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:09:06,989 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:09:06,992 INFO ]: TraceAbstraction initialized [2018-06-22 11:09:06,992 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:09:06" (1/3) ... [2018-06-22 11:09:06,993 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7379677f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:09:06, skipping insertion in model container [2018-06-22 11:09:06,993 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:09:06" (2/3) ... [2018-06-22 11:09:06,993 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7379677f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:09:06, skipping insertion in model container [2018-06-22 11:09:06,993 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:09:06" (3/3) ... [2018-06-22 11:09:06,995 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:09:07,006 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:09:07,023 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:09:07,095 INFO ]: Using default assertion order modulation [2018-06-22 11:09:07,095 INFO ]: Interprodecural is true [2018-06-22 11:09:07,095 INFO ]: Hoare is false [2018-06-22 11:09:07,095 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:09:07,095 INFO ]: Backedges is TWOTRACK [2018-06-22 11:09:07,095 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:09:07,095 INFO ]: Difference is false [2018-06-22 11:09:07,095 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:09:07,096 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:09:07,112 INFO ]: Start isEmpty. Operand 15 states. [2018-06-22 11:09:07,124 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:09:07,124 INFO ]: Found error trace [2018-06-22 11:09:07,125 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:09:07,126 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:09:07,131 INFO ]: Analyzing trace with hash -1036880812, now seen corresponding path program 1 times [2018-06-22 11:09:07,134 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:09:07,134 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:09:07,166 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:07,166 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:09:07,166 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:07,207 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:07,363 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:09:07,365 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:09:07,365 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:09:07,366 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:09:07,380 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:09:07,381 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:09:07,383 INFO ]: Start difference. First operand 15 states. Second operand 4 states. [2018-06-22 11:09:07,508 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:09:07,508 INFO ]: Finished difference Result 15 states and 22 transitions. [2018-06-22 11:09:07,509 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:09:07,510 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:09:07,510 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:09:07,520 INFO ]: With dead ends: 15 [2018-06-22 11:09:07,520 INFO ]: Without dead ends: 15 [2018-06-22 11:09:07,522 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 11:09:07,535 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 11:09:07,561 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 11:09:07,562 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:09:07,564 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2018-06-22 11:09:07,565 INFO ]: Start accepts. Automaton has 15 states and 22 transitions. Word has length 9 [2018-06-22 11:09:07,566 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:09:07,566 INFO ]: Abstraction has 15 states and 22 transitions. [2018-06-22 11:09:07,566 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:09:07,566 INFO ]: Start isEmpty. Operand 15 states and 22 transitions. [2018-06-22 11:09:07,568 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:09:07,568 INFO ]: Found error trace [2018-06-22 11:09:07,568 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:09:07,568 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:09:07,568 INFO ]: Analyzing trace with hash -929726366, now seen corresponding path program 1 times [2018-06-22 11:09:07,568 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:09:07,568 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:09:07,569 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:07,569 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:09:07,569 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:07,586 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:07,657 INFO ]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:09:07,657 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:09:07,657 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:09:07,659 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:09:07,659 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:09:07,659 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:09:07,659 INFO ]: Start difference. First operand 15 states and 22 transitions. Second operand 4 states. [2018-06-22 11:09:07,898 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:09:07,898 INFO ]: Finished difference Result 17 states and 26 transitions. [2018-06-22 11:09:07,898 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:09:07,898 INFO ]: Start accepts. Automaton has 4 states. Word has length 13 [2018-06-22 11:09:07,898 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:09:07,899 INFO ]: With dead ends: 17 [2018-06-22 11:09:07,899 INFO ]: Without dead ends: 17 [2018-06-22 11:09:07,900 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 11:09:07,900 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 11:09:07,905 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 15. [2018-06-22 11:09:07,905 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:09:07,905 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2018-06-22 11:09:07,906 INFO ]: Start accepts. Automaton has 15 states and 21 transitions. Word has length 13 [2018-06-22 11:09:07,906 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:09:07,906 INFO ]: Abstraction has 15 states and 21 transitions. [2018-06-22 11:09:07,906 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:09:07,906 INFO ]: Start isEmpty. Operand 15 states and 21 transitions. [2018-06-22 11:09:07,907 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:09:07,907 INFO ]: Found error trace [2018-06-22 11:09:07,907 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:09:07,907 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:09:07,907 INFO ]: Analyzing trace with hash -1174977219, now seen corresponding path program 1 times [2018-06-22 11:09:07,907 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:09:07,907 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:09:07,908 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:07,908 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:09:07,908 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:07,925 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:08,000 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:09:08,000 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:09:08,000 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 11:09:08,009 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:09:08,040 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:08,048 INFO ]: Computing forward predicates... [2018-06-22 11:09:08,285 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:09:08,307 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:09:08,308 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 11:09:08,308 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:09:08,308 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:09:08,308 INFO ]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:09:08,309 INFO ]: Start difference. First operand 15 states and 21 transitions. Second operand 8 states. [2018-06-22 11:09:08,544 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:09:08,544 INFO ]: Finished difference Result 19 states and 30 transitions. [2018-06-22 11:09:08,545 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:09:08,545 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 11:09:08,545 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:09:08,546 INFO ]: With dead ends: 19 [2018-06-22 11:09:08,546 INFO ]: Without dead ends: 19 [2018-06-22 11:09:08,547 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:09:08,547 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 11:09:08,552 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 17. [2018-06-22 11:09:08,552 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 11:09:08,553 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 25 transitions. [2018-06-22 11:09:08,553 INFO ]: Start accepts. Automaton has 17 states and 25 transitions. Word has length 13 [2018-06-22 11:09:08,553 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:09:08,553 INFO ]: Abstraction has 17 states and 25 transitions. [2018-06-22 11:09:08,553 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:09:08,553 INFO ]: Start isEmpty. Operand 17 states and 25 transitions. [2018-06-22 11:09:08,554 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:09:08,554 INFO ]: Found error trace [2018-06-22 11:09:08,554 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:09:08,555 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:09:08,555 INFO ]: Analyzing trace with hash -1420228072, now seen corresponding path program 1 times [2018-06-22 11:09:08,555 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:09:08,555 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:09:08,556 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:08,556 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:09:08,556 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:08,568 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:08,672 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:09:08,672 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:09:08,672 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 11:09:08,681 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:09:08,736 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:08,738 INFO ]: Computing forward predicates... [2018-06-22 11:09:09,051 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:09:09,071 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:09:09,071 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 11:09:09,072 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:09:09,072 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:09:09,072 INFO ]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:09:09,072 INFO ]: Start difference. First operand 17 states and 25 transitions. Second operand 9 states. [2018-06-22 11:09:09,512 WARN ]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 11:09:09,614 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:09:09,614 INFO ]: Finished difference Result 23 states and 38 transitions. [2018-06-22 11:09:09,614 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:09:09,615 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 11:09:09,615 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:09:09,616 INFO ]: With dead ends: 23 [2018-06-22 11:09:09,616 INFO ]: Without dead ends: 23 [2018-06-22 11:09:09,616 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-06-22 11:09:09,616 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 11:09:09,621 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 19. [2018-06-22 11:09:09,623 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 11:09:09,624 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 29 transitions. [2018-06-22 11:09:09,624 INFO ]: Start accepts. Automaton has 19 states and 29 transitions. Word has length 13 [2018-06-22 11:09:09,624 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:09:09,624 INFO ]: Abstraction has 19 states and 29 transitions. [2018-06-22 11:09:09,624 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:09:09,624 INFO ]: Start isEmpty. Operand 19 states and 29 transitions. [2018-06-22 11:09:09,624 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:09:09,625 INFO ]: Found error trace [2018-06-22 11:09:09,625 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:09:09,625 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:09:09,625 INFO ]: Analyzing trace with hash -1348970613, now seen corresponding path program 1 times [2018-06-22 11:09:09,625 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:09:09,625 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:09:09,626 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:09,626 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:09:09,626 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:09,635 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:09,663 INFO ]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:09:09,663 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:09:09,663 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:09:09,664 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:09:09,664 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:09:09,664 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:09:09,664 INFO ]: Start difference. First operand 19 states and 29 transitions. Second operand 4 states. [2018-06-22 11:09:10,194 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:09:10,194 INFO ]: Finished difference Result 36 states and 61 transitions. [2018-06-22 11:09:10,195 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:09:10,195 INFO ]: Start accepts. Automaton has 4 states. Word has length 17 [2018-06-22 11:09:10,195 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:09:10,196 INFO ]: With dead ends: 36 [2018-06-22 11:09:10,196 INFO ]: Without dead ends: 36 [2018-06-22 11:09:10,197 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 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 11:09:10,197 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-22 11:09:10,210 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 28. [2018-06-22 11:09:10,210 INFO ]: Start removeUnreachable. Operand 28 states. [2018-06-22 11:09:10,213 INFO ]: Finished removeUnreachable. Reduced from 28 states to 28 states and 46 transitions. [2018-06-22 11:09:10,213 INFO ]: Start accepts. Automaton has 28 states and 46 transitions. Word has length 17 [2018-06-22 11:09:10,213 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:09:10,213 INFO ]: Abstraction has 28 states and 46 transitions. [2018-06-22 11:09:10,213 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:09:10,213 INFO ]: Start isEmpty. Operand 28 states and 46 transitions. [2018-06-22 11:09:10,217 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:09:10,217 INFO ]: Found error trace [2018-06-22 11:09:10,217 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:09:10,217 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:09:10,217 INFO ]: Analyzing trace with hash 1126282305, now seen corresponding path program 1 times [2018-06-22 11:09:10,217 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:09:10,217 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:09:10,218 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:10,218 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:09:10,218 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:10,226 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:10,309 INFO ]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:09:10,309 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:09:10,309 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:09:10,309 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:09:10,309 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:09:10,309 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:09:10,309 INFO ]: Start difference. First operand 28 states and 46 transitions. Second operand 4 states. [2018-06-22 11:09:10,374 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:09:10,374 INFO ]: Finished difference Result 36 states and 57 transitions. [2018-06-22 11:09:10,374 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 11:09:10,374 INFO ]: Start accepts. Automaton has 4 states. Word has length 17 [2018-06-22 11:09:10,374 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:09:10,375 INFO ]: With dead ends: 36 [2018-06-22 11:09:10,375 INFO ]: Without dead ends: 36 [2018-06-22 11:09:10,376 INFO ]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 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 11:09:10,376 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-22 11:09:10,382 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 26. [2018-06-22 11:09:10,383 INFO ]: Start removeUnreachable. Operand 26 states. [2018-06-22 11:09:10,384 INFO ]: Finished removeUnreachable. Reduced from 26 states to 26 states and 40 transitions. [2018-06-22 11:09:10,384 INFO ]: Start accepts. Automaton has 26 states and 40 transitions. Word has length 17 [2018-06-22 11:09:10,384 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:09:10,384 INFO ]: Abstraction has 26 states and 40 transitions. [2018-06-22 11:09:10,384 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:09:10,384 INFO ]: Start isEmpty. Operand 26 states and 40 transitions. [2018-06-22 11:09:10,385 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:09:10,385 INFO ]: Found error trace [2018-06-22 11:09:10,385 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:09:10,385 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:09:10,385 INFO ]: Analyzing trace with hash -111344154, now seen corresponding path program 2 times [2018-06-22 11:09:10,386 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:09:10,386 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:09:10,387 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:10,388 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:09:10,388 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:10,411 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:10,509 INFO ]: Checked inductivity of 10 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:09:10,509 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:09:10,509 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 11:09:10,522 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:09:10,544 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:09:10,544 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:10,546 INFO ]: Computing forward predicates... [2018-06-22 11:09:10,648 INFO ]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:09:10,670 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:09:10,671 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 11 [2018-06-22 11:09:10,671 INFO ]: Interpolant automaton has 11 states [2018-06-22 11:09:10,671 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 11:09:10,672 INFO ]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:09:10,672 INFO ]: Start difference. First operand 26 states and 40 transitions. Second operand 11 states. [2018-06-22 11:09:10,977 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:09:10,977 INFO ]: Finished difference Result 45 states and 65 transitions. [2018-06-22 11:09:10,977 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:09:10,978 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 11:09:10,978 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:09:10,978 INFO ]: With dead ends: 45 [2018-06-22 11:09:10,978 INFO ]: Without dead ends: 29 [2018-06-22 11:09:10,979 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:09:10,979 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-22 11:09:10,983 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-22 11:09:10,983 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-22 11:09:10,984 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 41 transitions. [2018-06-22 11:09:10,984 INFO ]: Start accepts. Automaton has 29 states and 41 transitions. Word has length 17 [2018-06-22 11:09:10,984 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:09:10,984 INFO ]: Abstraction has 29 states and 41 transitions. [2018-06-22 11:09:10,984 INFO ]: Interpolant automaton has 11 states. [2018-06-22 11:09:10,984 INFO ]: Start isEmpty. Operand 29 states and 41 transitions. [2018-06-22 11:09:10,986 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:09:10,986 INFO ]: Found error trace [2018-06-22 11:09:10,986 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:09:10,986 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:09:10,986 INFO ]: Analyzing trace with hash 1663413852, now seen corresponding path program 2 times [2018-06-22 11:09:10,986 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:09:10,986 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:09:10,987 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:10,987 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:09:10,987 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:10,996 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:11,064 INFO ]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-06-22 11:09:11,065 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:09:11,065 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:09:11,072 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:09:11,102 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:09:11,102 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:11,105 INFO ]: Computing forward predicates... [2018-06-22 11:09:11,352 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:09:11,382 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:09:11,382 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2018-06-22 11:09:11,382 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:09:11,383 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:09:11,383 INFO ]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:09:11,383 INFO ]: Start difference. First operand 29 states and 41 transitions. Second operand 12 states. [2018-06-22 11:09:11,533 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:09:11,533 INFO ]: Finished difference Result 39 states and 51 transitions. [2018-06-22 11:09:11,533 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:09:11,533 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 11:09:11,533 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:09:11,534 INFO ]: With dead ends: 39 [2018-06-22 11:09:11,534 INFO ]: Without dead ends: 28 [2018-06-22 11:09:11,535 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:09:11,535 INFO ]: Start minimizeSevpa. Operand 28 states. [2018-06-22 11:09:11,538 INFO ]: Finished minimizeSevpa. Reduced states from 28 to 18. [2018-06-22 11:09:11,538 INFO ]: Start removeUnreachable. Operand 18 states. [2018-06-22 11:09:11,538 INFO ]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2018-06-22 11:09:11,538 INFO ]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 17 [2018-06-22 11:09:11,539 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:09:11,539 INFO ]: Abstraction has 18 states and 22 transitions. [2018-06-22 11:09:11,539 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:09:11,539 INFO ]: Start isEmpty. Operand 18 states and 22 transitions. [2018-06-22 11:09:11,539 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:09:11,539 INFO ]: Found error trace [2018-06-22 11:09:11,539 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:09:11,540 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:09:11,540 INFO ]: Analyzing trace with hash 425787393, now seen corresponding path program 2 times [2018-06-22 11:09:11,540 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:09:11,540 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:09:11,541 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:11,541 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:09:11,541 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:11,550 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:11,670 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:09:11,670 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:09:11,670 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:09:11,677 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:09:11,693 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:09:11,693 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:11,696 INFO ]: Computing forward predicates... [2018-06-22 11:09:11,766 INFO ]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:09:11,787 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:09:11,788 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 11:09:11,788 INFO ]: Interpolant automaton has 12 states [2018-06-22 11:09:11,788 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 11:09:11,788 INFO ]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:09:11,788 INFO ]: Start difference. First operand 18 states and 22 transitions. Second operand 12 states. [2018-06-22 11:09:12,173 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:09:12,173 INFO ]: Finished difference Result 26 states and 32 transitions. [2018-06-22 11:09:12,174 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 11:09:12,174 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 11:09:12,174 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:09:12,175 INFO ]: With dead ends: 26 [2018-06-22 11:09:12,175 INFO ]: Without dead ends: 26 [2018-06-22 11:09:12,175 INFO ]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:09:12,175 INFO ]: Start minimizeSevpa. Operand 26 states. [2018-06-22 11:09:12,178 INFO ]: Finished minimizeSevpa. Reduced states from 26 to 22. [2018-06-22 11:09:12,178 INFO ]: Start removeUnreachable. Operand 22 states. [2018-06-22 11:09:12,179 INFO ]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2018-06-22 11:09:12,179 INFO ]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 17 [2018-06-22 11:09:12,179 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:09:12,179 INFO ]: Abstraction has 22 states and 27 transitions. [2018-06-22 11:09:12,179 INFO ]: Interpolant automaton has 12 states. [2018-06-22 11:09:12,179 INFO ]: Start isEmpty. Operand 22 states and 27 transitions. [2018-06-22 11:09:12,180 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:09:12,180 INFO ]: Found error trace [2018-06-22 11:09:12,180 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:09:12,180 INFO ]: === Iteration 10 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:09:12,180 INFO ]: Analyzing trace with hash 1710500165, now seen corresponding path program 3 times [2018-06-22 11:09:12,180 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:09:12,180 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:09:12,181 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:12,181 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:09:12,181 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:12,193 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:12,318 INFO ]: Checked inductivity of 19 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:09:12,318 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:09:12,318 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:09:12,324 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:09:12,339 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 11:09:12,339 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:12,342 INFO ]: Computing forward predicates... [2018-06-22 11:09:12,463 INFO ]: Checked inductivity of 19 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:09:12,485 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:09:12,486 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 11:09:12,486 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:09:12,486 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:09:12,486 INFO ]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:09:12,486 INFO ]: Start difference. First operand 22 states and 27 transitions. Second operand 16 states. [2018-06-22 11:09:13,076 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:09:13,077 INFO ]: Finished difference Result 34 states and 41 transitions. [2018-06-22 11:09:13,077 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:09:13,077 INFO ]: Start accepts. Automaton has 16 states. Word has length 21 [2018-06-22 11:09:13,077 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:09:13,078 INFO ]: With dead ends: 34 [2018-06-22 11:09:13,078 INFO ]: Without dead ends: 34 [2018-06-22 11:09:13,078 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:09:13,078 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-22 11:09:13,082 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 20. [2018-06-22 11:09:13,082 INFO ]: Start removeUnreachable. Operand 20 states. [2018-06-22 11:09:13,082 INFO ]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2018-06-22 11:09:13,082 INFO ]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 21 [2018-06-22 11:09:13,083 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:09:13,083 INFO ]: Abstraction has 20 states and 24 transitions. [2018-06-22 11:09:13,083 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:09:13,083 INFO ]: Start isEmpty. Operand 20 states and 24 transitions. [2018-06-22 11:09:13,083 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 11:09:13,083 INFO ]: Found error trace [2018-06-22 11:09:13,083 INFO ]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:09:13,083 INFO ]: === Iteration 11 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:09:13,084 INFO ]: Analyzing trace with hash 2057414058, now seen corresponding path program 4 times [2018-06-22 11:09:13,084 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:09:13,084 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:09:13,084 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:13,085 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:09:13,085 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:09:13,094 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:13,157 INFO ]: Checked inductivity of 19 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-06-22 11:09:13,157 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:09:13,158 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 11:09:13,168 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 11:09:13,181 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 11:09:13,181 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:09:13,183 INFO ]: Computing forward predicates... [2018-06-22 11:09:13,359 INFO ]: Checked inductivity of 19 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 11:09:13,379 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:09:13,379 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10] total 14 [2018-06-22 11:09:13,379 INFO ]: Interpolant automaton has 14 states [2018-06-22 11:09:13,379 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 11:09:13,380 INFO ]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2018-06-22 11:09:13,380 INFO ]: Start difference. First operand 20 states and 24 transitions. Second operand 14 states. [2018-06-22 11:09:13,698 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:09:13,698 INFO ]: Finished difference Result 22 states and 26 transitions. [2018-06-22 11:09:13,698 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:09:13,698 INFO ]: Start accepts. Automaton has 14 states. Word has length 21 [2018-06-22 11:09:13,698 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:09:13,698 INFO ]: With dead ends: 22 [2018-06-22 11:09:13,698 INFO ]: Without dead ends: 0 [2018-06-22 11:09:13,698 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2018-06-22 11:09:13,699 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:09:13,699 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:09:13,699 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:09:13,699 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:09:13,699 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 11:09:13,699 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:09:13,699 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:09:13,699 INFO ]: Interpolant automaton has 14 states. [2018-06-22 11:09:13,699 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:09:13,699 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:09:13,704 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:09:13 BoogieIcfgContainer [2018-06-22 11:09:13,704 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:09:13,705 INFO ]: Toolchain (without parser) took 7194.87 ms. Allocated memory was 307.2 MB in the beginning and 385.4 MB in the end (delta: 78.1 MB). Free memory was 263.6 MB in the beginning and 296.5 MB in the end (delta: -32.8 MB). Peak memory consumption was 45.3 MB. Max. memory is 3.6 GB. [2018-06-22 11:09:13,706 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:09:13,707 INFO ]: ChcToBoogie took 53.19 ms. Allocated memory is still 307.2 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:09:13,707 INFO ]: Boogie Preprocessor took 38.40 ms. Allocated memory is still 307.2 MB. Free memory was 261.6 MB in the beginning and 260.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:09:13,708 INFO ]: RCFGBuilder took 374.99 ms. Allocated memory is still 307.2 MB. Free memory was 260.6 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 11:09:13,708 INFO ]: TraceAbstraction took 6715.35 ms. Allocated memory was 307.2 MB in the beginning and 385.4 MB in the end (delta: 78.1 MB). Free memory was 252.7 MB in the beginning and 296.5 MB in the end (delta: -43.8 MB). Peak memory consumption was 34.3 MB. Max. memory is 3.6 GB. [2018-06-22 11:09:13,712 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 53.19 ms. Allocated memory is still 307.2 MB. Free memory was 263.6 MB in the beginning and 261.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.40 ms. Allocated memory is still 307.2 MB. Free memory was 261.6 MB in the beginning and 260.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 374.99 ms. Allocated memory is still 307.2 MB. Free memory was 260.6 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 6715.35 ms. Allocated memory was 307.2 MB in the beginning and 385.4 MB in the end (delta: 78.1 MB). Free memory was 252.7 MB in the beginning and 296.5 MB in the end (delta: -43.8 MB). Peak memory consumption was 34.3 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 15 locations, 1 error locations. SAFE Result, 6.6s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 3.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 183 SDtfs, 73 SDslu, 485 SDs, 0 SdLazy, 795 SolverSat, 112 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 210 GetRequests, 101 SyntacticMatches, 5 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=7, 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, 11 MinimizatonAttempts, 54 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 294 NumberOfCodeBlocks, 292 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 276 ConstructedInterpolants, 0 QuantifiedInterpolants, 21316 SizeOfPredicates, 48 NumberOfNonLiveVariables, 635 ConjunctsInSsa, 173 ConjunctsInUnsatCore, 18 InterpolantComputations, 4 PerfectInterpolantSequences, 86/167 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/004-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-09-13-735.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/004-horn.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-09-13-735.csv Received shutdown request...