java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/hopv/lia/termination/x_plus_2_pow_n04.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 09:40:20,078 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 09:40:20,081 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 09:40:20,094 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 09:40:20,094 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 09:40:20,095 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 09:40:20,098 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 09:40:20,100 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 09:40:20,101 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 09:40:20,103 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 09:40:20,104 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 09:40:20,104 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 09:40:20,104 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 09:40:20,105 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 09:40:20,108 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 09:40:20,109 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 09:40:20,111 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 09:40:20,120 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 09:40:20,121 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 09:40:20,122 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 09:40:20,123 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 09:40:20,127 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 09:40:20,128 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 09:40:20,128 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 09:40:20,128 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 09:40:20,129 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 09:40:20,131 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 09:40:20,131 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 09:40:20,132 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 09:40:20,132 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 09:40:20,133 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 09:40:20,134 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 09:40:20,138 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 09:40:20,139 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 09:40:20,139 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 09:40:20,140 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 09:40:20,164 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 09:40:20,167 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 09:40:20,167 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 09:40:20,167 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 09:40:20,168 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 09:40:20,168 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 09:40:20,168 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 09:40:20,169 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 09:40:20,169 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 09:40:20,169 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 09:40:20,169 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 09:40:20,169 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 09:40:20,170 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:40:20,170 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 09:40:20,170 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 09:40:20,170 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 09:40:20,170 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 09:40:20,171 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 09:40:20,171 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 09:40:20,171 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 09:40:20,171 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 09:40:20,172 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 09:40:20,173 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 09:40:20,217 INFO ]: Repository-Root is: /tmp [2018-06-25 09:40:20,229 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 09:40:20,235 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 09:40:20,237 INFO ]: Initializing SmtParser... [2018-06-25 09:40:20,237 INFO ]: SmtParser initialized [2018-06-25 09:40:20,237 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/termination/x_plus_2_pow_n04.smt2 [2018-06-25 09:40:20,239 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-25 09:40:20,326 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/termination/x_plus_2_pow_n04.smt2 unknown [2018-06-25 09:40:20,757 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/termination/x_plus_2_pow_n04.smt2 [2018-06-25 09:40:20,762 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 09:40:20,775 INFO ]: Walking toolchain with 4 elements. [2018-06-25 09:40:20,776 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 09:40:20,776 INFO ]: Initializing ChcToBoogie... [2018-06-25 09:40:20,776 INFO ]: ChcToBoogie initialized [2018-06-25 09:40:20,779 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:40:20" (1/1) ... [2018-06-25 09:40:20,857 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:40:20 Unit [2018-06-25 09:40:20,857 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 09:40:20,858 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 09:40:20,858 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 09:40:20,858 INFO ]: Boogie Preprocessor initialized [2018-06-25 09:40:20,882 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:40:20" (1/1) ... [2018-06-25 09:40:20,882 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:40:20" (1/1) ... [2018-06-25 09:40:20,888 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:40:20" (1/1) ... [2018-06-25 09:40:20,889 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:40:20" (1/1) ... [2018-06-25 09:40:20,894 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:40:20" (1/1) ... [2018-06-25 09:40:20,907 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:40:20" (1/1) ... [2018-06-25 09:40:20,909 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:40:20" (1/1) ... [2018-06-25 09:40:20,910 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 09:40:20,911 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 09:40:20,911 INFO ]: Initializing RCFGBuilder... [2018-06-25 09:40:20,911 INFO ]: RCFGBuilder initialized [2018-06-25 09:40:20,912 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:40:20" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-25 09:40:20,934 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 09:40:20,934 INFO ]: Found specification of procedure gotoProc [2018-06-25 09:40:20,934 INFO ]: Found implementation of procedure gotoProc [2018-06-25 09:40:20,934 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 09:40:20,934 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 09:40:20,934 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 09:40:21,338 INFO ]: Using library mode [2018-06-25 09:40:21,338 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:40:21 BoogieIcfgContainer [2018-06-25 09:40:21,338 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 09:40:21,343 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 09:40:21,344 INFO ]: Initializing TraceAbstraction... [2018-06-25 09:40:21,346 INFO ]: TraceAbstraction initialized [2018-06-25 09:40:21,347 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 09:40:20" (1/3) ... [2018-06-25 09:40:21,347 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd8b9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 09:40:21, skipping insertion in model container [2018-06-25 09:40:21,348 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 09:40:20" (2/3) ... [2018-06-25 09:40:21,348 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fd8b9c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 09:40:21, skipping insertion in model container [2018-06-25 09:40:21,348 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 09:40:21" (3/3) ... [2018-06-25 09:40:21,349 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 09:40:21,359 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 09:40:21,368 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 09:40:21,412 INFO ]: Using default assertion order modulation [2018-06-25 09:40:21,412 INFO ]: Interprodecural is true [2018-06-25 09:40:21,412 INFO ]: Hoare is false [2018-06-25 09:40:21,412 INFO ]: Compute interpolants for FPandBP [2018-06-25 09:40:21,413 INFO ]: Backedges is TWOTRACK [2018-06-25 09:40:21,413 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 09:40:21,413 INFO ]: Difference is false [2018-06-25 09:40:21,413 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 09:40:21,413 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 09:40:21,425 INFO ]: Start isEmpty. Operand 23 states. [2018-06-25 09:40:21,435 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 09:40:21,435 INFO ]: Found error trace [2018-06-25 09:40:21,435 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:40:21,436 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:40:21,440 INFO ]: Analyzing trace with hash -837294091, now seen corresponding path program 1 times [2018-06-25 09:40:21,441 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:40:21,442 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:40:21,481 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:40:21,481 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:40:21,481 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:40:21,509 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:40:21,549 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:40:21,551 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:40:21,551 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 09:40:21,553 INFO ]: Interpolant automaton has 2 states [2018-06-25 09:40:21,564 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 09:40:21,564 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:40:21,566 INFO ]: Start difference. First operand 23 states. Second operand 2 states. [2018-06-25 09:40:21,592 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:40:21,593 INFO ]: Finished difference Result 21 states and 28 transitions. [2018-06-25 09:40:21,595 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 09:40:21,596 INFO ]: Start accepts. Automaton has 2 states. Word has length 7 [2018-06-25 09:40:21,596 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:40:21,606 INFO ]: With dead ends: 21 [2018-06-25 09:40:21,606 INFO ]: Without dead ends: 16 [2018-06-25 09:40:21,608 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 09:40:21,621 INFO ]: Start minimizeSevpa. Operand 16 states. [2018-06-25 09:40:21,637 INFO ]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-06-25 09:40:21,638 INFO ]: Start removeUnreachable. Operand 16 states. [2018-06-25 09:40:21,639 INFO ]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2018-06-25 09:40:21,640 INFO ]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 7 [2018-06-25 09:40:21,640 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:40:21,641 INFO ]: Abstraction has 16 states and 20 transitions. [2018-06-25 09:40:21,641 INFO ]: Interpolant automaton has 2 states. [2018-06-25 09:40:21,641 INFO ]: Start isEmpty. Operand 16 states and 20 transitions. [2018-06-25 09:40:21,642 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 09:40:21,642 INFO ]: Found error trace [2018-06-25 09:40:21,642 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:40:21,642 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:40:21,642 INFO ]: Analyzing trace with hash -166513201, now seen corresponding path program 1 times [2018-06-25 09:40:21,642 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:40:21,642 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:40:21,643 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:40:21,643 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:40:21,643 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:40:21,650 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:40:21,740 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:40:21,740 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:40:21,741 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:40:21,742 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:40:21,742 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:40:21,742 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:40:21,742 INFO ]: Start difference. First operand 16 states and 20 transitions. Second operand 4 states. [2018-06-25 09:40:21,889 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:40:21,890 INFO ]: Finished difference Result 29 states and 37 transitions. [2018-06-25 09:40:21,890 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:40:21,890 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-25 09:40:21,890 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:40:21,891 INFO ]: With dead ends: 29 [2018-06-25 09:40:21,891 INFO ]: Without dead ends: 29 [2018-06-25 09:40:21,892 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:40:21,892 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-25 09:40:21,899 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-25 09:40:21,899 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-25 09:40:21,900 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2018-06-25 09:40:21,900 INFO ]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 8 [2018-06-25 09:40:21,902 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:40:21,902 INFO ]: Abstraction has 29 states and 37 transitions. [2018-06-25 09:40:21,902 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:40:21,902 INFO ]: Start isEmpty. Operand 29 states and 37 transitions. [2018-06-25 09:40:21,902 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 09:40:21,902 INFO ]: Found error trace [2018-06-25 09:40:21,902 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:40:21,902 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:40:21,903 INFO ]: Analyzing trace with hash 101705340, now seen corresponding path program 1 times [2018-06-25 09:40:21,903 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:40:21,903 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:40:21,903 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:40:21,903 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:40:21,903 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:40:21,912 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:40:21,961 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:40:21,961 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:40:21,962 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:40:21,962 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:40:21,962 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:40:21,962 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:40:21,962 INFO ]: Start difference. First operand 29 states and 37 transitions. Second operand 4 states. [2018-06-25 09:40:22,158 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:40:22,159 INFO ]: Finished difference Result 36 states and 46 transitions. [2018-06-25 09:40:22,159 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:40:22,159 INFO ]: Start accepts. Automaton has 4 states. Word has length 10 [2018-06-25 09:40:22,159 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:40:22,160 INFO ]: With dead ends: 36 [2018-06-25 09:40:22,160 INFO ]: Without dead ends: 29 [2018-06-25 09:40:22,160 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:40:22,160 INFO ]: Start minimizeSevpa. Operand 29 states. [2018-06-25 09:40:22,164 INFO ]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-06-25 09:40:22,164 INFO ]: Start removeUnreachable. Operand 29 states. [2018-06-25 09:40:22,165 INFO ]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2018-06-25 09:40:22,165 INFO ]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 10 [2018-06-25 09:40:22,165 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:40:22,165 INFO ]: Abstraction has 29 states and 36 transitions. [2018-06-25 09:40:22,165 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:40:22,165 INFO ]: Start isEmpty. Operand 29 states and 36 transitions. [2018-06-25 09:40:22,166 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 09:40:22,166 INFO ]: Found error trace [2018-06-25 09:40:22,166 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:40:22,166 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:40:22,166 INFO ]: Analyzing trace with hash 1987410039, now seen corresponding path program 1 times [2018-06-25 09:40:22,166 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:40:22,166 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:40:22,167 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:40:22,167 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:40:22,167 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:40:22,190 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:40:22,369 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 09:40:22,369 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 09:40:22,369 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-25 09:40:22,369 INFO ]: Interpolant automaton has 4 states [2018-06-25 09:40:22,370 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-25 09:40:22,370 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-25 09:40:22,370 INFO ]: Start difference. First operand 29 states and 36 transitions. Second operand 4 states. [2018-06-25 09:40:22,446 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:40:22,446 INFO ]: Finished difference Result 41 states and 52 transitions. [2018-06-25 09:40:22,447 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:40:22,447 INFO ]: Start accepts. Automaton has 4 states. Word has length 12 [2018-06-25 09:40:22,447 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:40:22,448 INFO ]: With dead ends: 41 [2018-06-25 09:40:22,448 INFO ]: Without dead ends: 41 [2018-06-25 09:40:22,448 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:40:22,448 INFO ]: Start minimizeSevpa. Operand 41 states. [2018-06-25 09:40:22,453 INFO ]: Finished minimizeSevpa. Reduced states from 41 to 33. [2018-06-25 09:40:22,454 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-25 09:40:22,455 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-06-25 09:40:22,455 INFO ]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 12 [2018-06-25 09:40:22,455 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:40:22,455 INFO ]: Abstraction has 33 states and 40 transitions. [2018-06-25 09:40:22,455 INFO ]: Interpolant automaton has 4 states. [2018-06-25 09:40:22,455 INFO ]: Start isEmpty. Operand 33 states and 40 transitions. [2018-06-25 09:40:22,456 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-25 09:40:22,456 INFO ]: Found error trace [2018-06-25 09:40:22,456 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:40:22,456 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:40:22,456 INFO ]: Analyzing trace with hash 1428821581, now seen corresponding path program 1 times [2018-06-25 09:40:22,456 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:40:22,456 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:40:22,457 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:40:22,457 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:40:22,457 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:40:22,480 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:40:22,628 INFO ]: Checked inductivity of 9 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-25 09:40:22,628 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:40:22,628 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:40:22,639 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:40:22,694 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:40:22,703 INFO ]: Computing forward predicates... [2018-06-25 09:40:22,835 INFO ]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-06-25 09:40:22,869 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-25 09:40:22,869 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-25 09:40:22,869 INFO ]: Interpolant automaton has 5 states [2018-06-25 09:40:22,869 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 09:40:22,869 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:40:22,869 INFO ]: Start difference. First operand 33 states and 40 transitions. Second operand 5 states. [2018-06-25 09:40:23,039 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:40:23,039 INFO ]: Finished difference Result 42 states and 52 transitions. [2018-06-25 09:40:23,040 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-25 09:40:23,040 INFO ]: Start accepts. Automaton has 5 states. Word has length 23 [2018-06-25 09:40:23,040 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:40:23,043 INFO ]: With dead ends: 42 [2018-06-25 09:40:23,043 INFO ]: Without dead ends: 40 [2018-06-25 09:40:23,043 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 09:40:23,043 INFO ]: Start minimizeSevpa. Operand 40 states. [2018-06-25 09:40:23,047 INFO ]: Finished minimizeSevpa. Reduced states from 40 to 33. [2018-06-25 09:40:23,047 INFO ]: Start removeUnreachable. Operand 33 states. [2018-06-25 09:40:23,048 INFO ]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2018-06-25 09:40:23,048 INFO ]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 23 [2018-06-25 09:40:23,048 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:40:23,048 INFO ]: Abstraction has 33 states and 38 transitions. [2018-06-25 09:40:23,048 INFO ]: Interpolant automaton has 5 states. [2018-06-25 09:40:23,048 INFO ]: Start isEmpty. Operand 33 states and 38 transitions. [2018-06-25 09:40:23,049 INFO ]: Finished isEmpty. Found accepting run of length 24 [2018-06-25 09:40:23,049 INFO ]: Found error trace [2018-06-25 09:40:23,049 INFO ]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 09:40:23,049 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 09:40:23,050 INFO ]: Analyzing trace with hash 1543338185, now seen corresponding path program 1 times [2018-06-25 09:40:23,050 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 09:40:23,050 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 09:40:23,050 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:40:23,050 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:40:23,050 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 09:40:23,087 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:40:23,157 INFO ]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-25 09:40:23,157 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 09:40:23,157 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 09:40:23,166 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 09:40:23,216 INFO ]: Conjunction of SSA is unsat [2018-06-25 09:40:23,220 INFO ]: Computing forward predicates... [2018-06-25 09:40:23,413 INFO ]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-25 09:40:23,447 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 09:40:23,448 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-25 09:40:23,448 INFO ]: Interpolant automaton has 6 states [2018-06-25 09:40:23,448 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 09:40:23,448 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-25 09:40:23,448 INFO ]: Start difference. First operand 33 states and 38 transitions. Second operand 6 states. [2018-06-25 09:40:23,703 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 09:40:23,703 INFO ]: Finished difference Result 30 states and 34 transitions. [2018-06-25 09:40:23,703 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 09:40:23,703 INFO ]: Start accepts. Automaton has 6 states. Word has length 23 [2018-06-25 09:40:23,703 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 09:40:23,703 INFO ]: With dead ends: 30 [2018-06-25 09:40:23,703 INFO ]: Without dead ends: 0 [2018-06-25 09:40:23,703 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-25 09:40:23,704 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 09:40:23,704 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 09:40:23,704 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 09:40:23,704 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 09:40:23,704 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2018-06-25 09:40:23,704 INFO ]: Finished accepts. word is rejected. [2018-06-25 09:40:23,704 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 09:40:23,704 INFO ]: Interpolant automaton has 6 states. [2018-06-25 09:40:23,704 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 09:40:23,704 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 09:40:23,708 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 09:40:23 BoogieIcfgContainer [2018-06-25 09:40:23,708 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 09:40:23,708 INFO ]: Toolchain (without parser) took 2945.69 ms. Allocated memory was 302.5 MB in the beginning and 326.1 MB in the end (delta: 23.6 MB). Free memory was 246.9 MB in the beginning and 249.0 MB in the end (delta: -2.0 MB). Peak memory consumption was 21.6 MB. Max. memory is 3.6 GB. [2018-06-25 09:40:23,710 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 302.5 MB. Free memory is still 267.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:40:23,710 INFO ]: ChcToBoogie took 82.08 ms. Allocated memory is still 302.5 MB. Free memory was 246.9 MB in the beginning and 242.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:40:23,711 INFO ]: Boogie Preprocessor took 52.42 ms. Allocated memory is still 302.5 MB. Free memory is still 242.9 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 09:40:23,711 INFO ]: RCFGBuilder took 427.45 ms. Allocated memory is still 302.5 MB. Free memory was 242.9 MB in the beginning and 228.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. [2018-06-25 09:40:23,711 INFO ]: TraceAbstraction took 2364.21 ms. Allocated memory was 302.5 MB in the beginning and 326.1 MB in the end (delta: 23.6 MB). Free memory was 228.9 MB in the beginning and 249.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 3.6 GB. [2018-06-25 09:40:23,714 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 302.5 MB. Free memory is still 267.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 82.08 ms. Allocated memory is still 302.5 MB. Free memory was 246.9 MB in the beginning and 242.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 52.42 ms. Allocated memory is still 302.5 MB. Free memory is still 242.9 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 427.45 ms. Allocated memory is still 302.5 MB. Free memory was 242.9 MB in the beginning and 228.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2364.21 ms. Allocated memory was 302.5 MB in the beginning and 326.1 MB in the end (delta: 23.6 MB). Free memory was 228.9 MB in the beginning and 249.0 MB in the end (delta: -20.0 MB). Peak memory consumption was 3.6 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 23 locations, 1 error locations. SAFE Result, 2.3s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 131 SDtfs, 76 SDslu, 170 SDs, 0 SdLazy, 96 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, 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, 6 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 121 ConstructedInterpolants, 0 QuantifiedInterpolants, 3816 SizeOfPredicates, 6 NumberOfNonLiveVariables, 345 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 33/36 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/x_plus_2_pow_n04.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_09-40-23-731.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/x_plus_2_pow_n04.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_09-40-23-731.csv Received shutdown request...