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/vmt-chc-benchmarks/cav12/simple_array_inversion-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:23:50,961 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:23:50,964 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:23:50,979 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:23:50,979 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:23:50,980 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:23:50,981 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:23:50,984 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:23:50,986 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:23:50,986 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:23:50,988 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:23:50,988 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:23:50,989 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:23:50,990 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:23:50,991 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:23:50,993 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:23:50,995 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:23:51,004 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:23:51,005 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:23:51,006 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:23:51,007 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:23:51,014 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:23:51,014 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:23:51,014 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:23:51,015 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:23:51,016 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:23:51,016 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:23:51,017 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:23:51,021 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:23:51,022 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:23:51,022 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:23:51,023 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:23:51,023 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:23:51,024 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:23:51,024 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:23:51,025 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 14:23:51,042 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:23:51,043 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:23:51,043 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:23:51,043 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:23:51,044 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:23:51,044 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:23:51,044 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:23:51,045 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:23:51,047 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:23:51,048 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:23:51,048 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:23:51,048 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:23:51,048 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:23:51,048 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:23:51,049 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:23:51,049 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:23:51,049 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:23:51,049 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:23:51,049 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:23:51,051 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:23:51,052 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:23:51,098 INFO ]: Repository-Root is: /tmp [2018-06-22 14:23:51,118 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:23:51,123 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:23:51,125 INFO ]: Initializing SmtParser... [2018-06-22 14:23:51,125 INFO ]: SmtParser initialized [2018-06-22 14:23:51,126 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-1.smt2 [2018-06-22 14:23:51,127 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 14:23:51,218 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-1.smt2 unknown [2018-06-22 14:23:51,648 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-1.smt2 [2018-06-22 14:23:51,653 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:23:51,659 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:23:51,659 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:23:51,659 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:23:51,659 INFO ]: ChcToBoogie initialized [2018-06-22 14:23:51,663 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:23:51" (1/1) ... [2018-06-22 14:23:51,710 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:23:51 Unit [2018-06-22 14:23:51,710 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:23:51,711 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:23:51,711 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:23:51,711 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:23:51,732 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:23:51" (1/1) ... [2018-06-22 14:23:51,732 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:23:51" (1/1) ... [2018-06-22 14:23:51,743 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:23:51" (1/1) ... [2018-06-22 14:23:51,743 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:23:51" (1/1) ... [2018-06-22 14:23:51,753 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:23:51" (1/1) ... [2018-06-22 14:23:51,754 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:23:51" (1/1) ... [2018-06-22 14:23:51,757 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:23:51" (1/1) ... [2018-06-22 14:23:51,761 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:23:51,761 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:23:51,761 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:23:51,761 INFO ]: RCFGBuilder initialized [2018-06-22 14:23:51,762 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:23:51" (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 14:23:51,774 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:23:51,774 INFO ]: Found specification of procedure False [2018-06-22 14:23:51,774 INFO ]: Found implementation of procedure False [2018-06-22 14:23:51,774 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:23:51,774 INFO ]: Found specification of procedure state [2018-06-22 14:23:51,774 INFO ]: Found implementation of procedure state [2018-06-22 14:23:51,774 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:23:51,774 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:23:51,774 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 14:23:52,188 INFO ]: Using library mode [2018-06-22 14:23:52,189 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:23:52 BoogieIcfgContainer [2018-06-22 14:23:52,189 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:23:52,191 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:23:52,191 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:23:52,194 INFO ]: TraceAbstraction initialized [2018-06-22 14:23:52,194 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:23:51" (1/3) ... [2018-06-22 14:23:52,195 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a96675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:23:52, skipping insertion in model container [2018-06-22 14:23:52,195 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:23:51" (2/3) ... [2018-06-22 14:23:52,195 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57a96675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:23:52, skipping insertion in model container [2018-06-22 14:23:52,195 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:23:52" (3/3) ... [2018-06-22 14:23:52,197 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:23:52,209 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:23:52,221 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:23:52,260 INFO ]: Using default assertion order modulation [2018-06-22 14:23:52,261 INFO ]: Interprodecural is true [2018-06-22 14:23:52,261 INFO ]: Hoare is false [2018-06-22 14:23:52,261 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:23:52,261 INFO ]: Backedges is TWOTRACK [2018-06-22 14:23:52,261 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:23:52,261 INFO ]: Difference is false [2018-06-22 14:23:52,261 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:23:52,261 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:23:52,275 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:23:52,298 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:23:52,298 INFO ]: Found error trace [2018-06-22 14:23:52,299 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:23:52,299 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:23:52,305 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 14:23:52,307 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:23:52,308 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:23:52,346 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:23:52,346 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:23:52,346 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:23:52,380 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:23:52,513 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:23:52,514 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:23:52,515 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:23:52,516 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:23:52,532 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:23:52,532 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:23:52,534 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:23:52,639 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:23:52,639 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:23:52,640 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:23:52,640 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:23:52,641 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:23:52,650 INFO ]: With dead ends: 13 [2018-06-22 14:23:52,650 INFO ]: Without dead ends: 13 [2018-06-22 14:23:52,651 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 14:23:52,669 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:23:52,697 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:23:52,698 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:23:52,699 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:23:52,700 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:23:52,700 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:23:52,700 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:23:52,700 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:23:52,701 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:23:52,702 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:23:52,702 INFO ]: Found error trace [2018-06-22 14:23:52,702 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:23:52,702 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:23:52,702 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 14:23:52,702 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:23:52,702 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:23:52,703 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:23:52,703 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:23:52,703 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:23:52,836 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:23:53,132 WARN ]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-22 14:23:53,297 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:23:53,298 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:23:53,298 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 14:23:53,304 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:23:53,366 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:23:53,379 INFO ]: Computing forward predicates... [2018-06-22 14:23:54,953 WARN ]: Spent 1.07 s on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2018-06-22 14:23:55,104 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:23:55,126 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:23:55,130 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 14:23:55,131 INFO ]: Interpolant automaton has 9 states [2018-06-22 14:23:55,131 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 14:23:55,131 INFO ]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-06-22 14:23:55,131 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 14:23:55,541 WARN ]: Spent 208.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2018-06-22 14:23:55,578 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:23:55,578 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:23:55,579 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:23:55,579 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 14:23:55,579 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:23:55,580 INFO ]: With dead ends: 17 [2018-06-22 14:23:55,580 INFO ]: Without dead ends: 17 [2018-06-22 14:23:55,580 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-06-22 14:23:55,580 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:23:55,584 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:23:55,584 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:23:55,584 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:23:55,585 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-06-22 14:23:55,585 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:23:55,585 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:23:55,585 INFO ]: Interpolant automaton has 9 states. [2018-06-22 14:23:55,585 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:23:55,585 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:23:55,585 INFO ]: Found error trace [2018-06-22 14:23:55,585 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:23:55,586 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:23:55,586 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 2 times [2018-06-22 14:23:55,586 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:23:55,586 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:23:55,587 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:23:55,587 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:23:55,587 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:23:55,782 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:23:56,287 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:23:56,287 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:23:56,287 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 14:23:56,292 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:23:56,394 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:23:56,394 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:23:56,404 INFO ]: Computing forward predicates... [2018-06-22 14:23:57,931 WARN ]: Spent 539.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 48 [2018-06-22 14:23:59,235 WARN ]: Spent 738.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 56 [2018-06-22 14:24:02,263 WARN ]: Spent 2.41 s on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2018-06-22 14:24:02,933 WARN ]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 14:24:03,452 WARN ]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 14:24:03,572 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:24:03,605 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:24:03,605 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 14:24:03,605 INFO ]: Interpolant automaton has 17 states [2018-06-22 14:24:03,605 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 14:24:03,605 INFO ]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2018-06-22 14:24:03,606 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 14:24:04,577 WARN ]: Spent 727.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 79 [2018-06-22 14:24:04,932 WARN ]: Spent 268.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 20 [2018-06-22 14:24:05,279 WARN ]: Spent 306.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 36 [2018-06-22 14:24:06,018 WARN ]: Spent 697.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 74 [2018-06-22 14:24:06,055 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:24:06,072 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 14:24:06,072 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:24:06,072 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 14:24:06,073 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:24:06,073 INFO ]: With dead ends: 19 [2018-06-22 14:24:06,073 INFO ]: Without dead ends: 19 [2018-06-22 14:24:06,073 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2018-06-22 14:24:06,074 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 14:24:06,075 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 14:24:06,075 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 14:24:06,077 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 14:24:06,077 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 14:24:06,077 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:24:06,077 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 14:24:06,077 INFO ]: Interpolant automaton has 17 states. [2018-06-22 14:24:06,077 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 14:24:06,078 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 14:24:06,078 INFO ]: Found error trace [2018-06-22 14:24:06,078 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:24:06,078 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:24:06,079 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 3 times [2018-06-22 14:24:06,079 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:24:06,079 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:24:06,079 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:24:06,079 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:24:06,079 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:24:06,282 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:24:06,749 WARN ]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:24:07,409 WARN ]: Spent 606.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 19 [2018-06-22 14:24:07,859 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:24:07,859 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:24:07,859 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 14:24:07,867 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:24:07,960 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-22 14:24:07,960 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:24:07,976 INFO ]: Computing forward predicates... [2018-06-22 14:24:08,369 WARN ]: Spent 231.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 25 [2018-06-22 14:24:09,234 WARN ]: Spent 474.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 56 [2018-06-22 14:24:09,952 WARN ]: Spent 331.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 52 [2018-06-22 14:24:10,824 WARN ]: Spent 368.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 52 [2018-06-22 14:24:11,014 INFO ]: Checked inductivity of 36 backedges. 3 proven. 23 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:24:11,039 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:24:11,039 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2018-06-22 14:24:11,039 INFO ]: Interpolant automaton has 20 states [2018-06-22 14:24:11,040 INFO ]: Constructing interpolant automaton starting with 20 interpolants. [2018-06-22 14:24:11,040 INFO ]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2018-06-22 14:24:11,040 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 20 states. [2018-06-22 14:24:11,680 WARN ]: Spent 566.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 72 [2018-06-22 14:24:11,944 WARN ]: Spent 123.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 28 [2018-06-22 14:24:12,128 WARN ]: Spent 160.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 33 [2018-06-22 14:24:12,479 WARN ]: Spent 314.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 62 [2018-06-22 14:24:12,517 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:24:12,517 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:24:12,519 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:24:12,519 INFO ]: Start accepts. Automaton has 20 states. Word has length 25 [2018-06-22 14:24:12,519 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:24:12,520 INFO ]: With dead ends: 21 [2018-06-22 14:24:12,520 INFO ]: Without dead ends: 21 [2018-06-22 14:24:12,520 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2018-06-22 14:24:12,520 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:24:12,523 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:24:12,523 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:24:12,524 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:24:12,524 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 14:24:12,524 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:24:12,524 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:24:12,524 INFO ]: Interpolant automaton has 20 states. [2018-06-22 14:24:12,524 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:24:12,525 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:24:12,525 INFO ]: Found error trace [2018-06-22 14:24:12,525 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:24:12,525 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:24:12,525 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 4 times [2018-06-22 14:24:12,525 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:24:12,525 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:24:12,526 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:24:12,526 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:24:12,526 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:24:12,697 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:24:13,239 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:24:14,027 WARN ]: Spent 739.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2018-06-22 14:24:14,581 WARN ]: Spent 406.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 75 [2018-06-22 14:24:14,815 WARN ]: Spent 183.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 61 [2018-06-22 14:24:15,081 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 32 [2018-06-22 14:24:15,315 WARN ]: Spent 201.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 31 [2018-06-22 14:24:15,344 INFO ]: Checked inductivity of 55 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:24:15,344 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:24:15,344 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 14:24:15,350 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 14:24:15,502 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 14:24:15,502 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:24:15,516 INFO ]: Computing forward predicates... [2018-06-22 14:24:16,393 WARN ]: Spent 371.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 46 [2018-06-22 14:24:20,336 WARN ]: Spent 3.53 s on a formula simplification. DAG size of input: 743 DAG size of output: 196 [2018-06-22 14:24:22,438 WARN ]: Spent 1.66 s on a formula simplification. DAG size of input: 389 DAG size of output: 133 [2018-06-22 14:24:23,865 WARN ]: Spent 1.24 s on a formula simplification. DAG size of input: 399 DAG size of output: 134 [2018-06-22 14:24:24,496 WARN ]: Spent 517.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 78 [2018-06-22 14:24:24,775 INFO ]: Checked inductivity of 55 backedges. 19 proven. 19 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-06-22 14:24:24,795 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:24:24,795 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2018-06-22 14:24:24,796 INFO ]: Interpolant automaton has 22 states [2018-06-22 14:24:24,796 INFO ]: Constructing interpolant automaton starting with 22 interpolants. [2018-06-22 14:24:24,796 INFO ]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2018-06-22 14:24:24,796 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 22 states. [2018-06-22 14:24:26,883 WARN ]: Spent 2.01 s on a formula simplification. DAG size of input: 236 DAG size of output: 196 [2018-06-22 14:24:27,305 WARN ]: Spent 360.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 36 [2018-06-22 14:24:27,821 WARN ]: Spent 466.00 ms on a formula simplification. DAG size of input: 239 DAG size of output: 69 [2018-06-22 14:24:28,237 WARN ]: Spent 369.00 ms on a formula simplification. DAG size of input: 241 DAG size of output: 67 [2018-06-22 14:24:28,239 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:24:28,239 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 14:24:28,239 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:24:28,239 INFO ]: Start accepts. Automaton has 22 states. Word has length 29 [2018-06-22 14:24:28,239 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:24:28,239 INFO ]: With dead ends: 13 [2018-06-22 14:24:28,239 INFO ]: Without dead ends: 0 [2018-06-22 14:24:28,239 INFO ]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=139, Invalid=511, Unknown=0, NotChecked=0, Total=650 [2018-06-22 14:24:28,239 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 14:24:28,239 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 14:24:28,239 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 14:24:28,239 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 14:24:28,239 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2018-06-22 14:24:28,239 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:24:28,239 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 14:24:28,239 INFO ]: Interpolant automaton has 22 states. [2018-06-22 14:24:28,239 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 14:24:28,239 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 14:24:28,243 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:24:28 BoogieIcfgContainer [2018-06-22 14:24:28,243 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:24:28,244 INFO ]: Toolchain (without parser) took 36590.87 ms. Allocated memory was 309.9 MB in the beginning and 824.2 MB in the end (delta: 514.3 MB). Free memory was 251.3 MB in the beginning and 285.6 MB in the end (delta: -34.3 MB). Peak memory consumption was 480.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:24:28,245 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:24:28,245 INFO ]: ChcToBoogie took 51.51 ms. Allocated memory is still 309.9 MB. Free memory was 251.3 MB in the beginning and 249.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:24:28,245 INFO ]: Boogie Preprocessor took 49.49 ms. Allocated memory is still 309.9 MB. Free memory was 249.3 MB in the beginning and 247.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:24:28,246 INFO ]: RCFGBuilder took 428.11 ms. Allocated memory is still 309.9 MB. Free memory was 247.2 MB in the beginning and 226.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:24:28,246 INFO ]: TraceAbstraction took 36052.46 ms. Allocated memory was 309.9 MB in the beginning and 824.2 MB in the end (delta: 514.3 MB). Free memory was 226.3 MB in the beginning and 285.6 MB in the end (delta: -59.3 MB). Peak memory consumption was 455.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:24:28,248 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 309.9 MB. Free memory is still 275.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 51.51 ms. Allocated memory is still 309.9 MB. Free memory was 251.3 MB in the beginning and 249.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 49.49 ms. Allocated memory is still 309.9 MB. Free memory was 249.3 MB in the beginning and 247.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 428.11 ms. Allocated memory is still 309.9 MB. Free memory was 247.2 MB in the beginning and 226.3 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 36052.46 ms. Allocated memory was 309.9 MB in the beginning and 824.2 MB in the end (delta: 514.3 MB). Free memory was 226.3 MB in the beginning and 285.6 MB in the end (delta: -59.3 MB). Peak memory consumption was 455.0 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, 13 locations, 1 error locations. SAFE Result, 35.9s OverallTime, 5 OverallIterations, 6 TraceHistogramMax, 7.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 57 SDtfs, 82 SDslu, 204 SDs, 0 SdLazy, 186 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 28.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 26.5s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 176 ConstructedInterpolants, 0 QuantifiedInterpolants, 202872 SizeOfPredicates, 1023 NumberOfNonLiveVariables, 1369 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 96/230 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/simple_array_inversion-1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-24-28-259.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_array_inversion-1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-24-28-259.csv Received shutdown request...