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-3.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:24:43,787 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:24:43,789 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:24:43,799 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:24:43,800 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:24:43,801 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:24:43,802 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:24:43,804 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:24:43,806 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:24:43,807 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:24:43,808 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:24:43,809 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:24:43,809 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:24:43,810 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:24:43,814 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:24:43,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:24:43,817 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:24:43,819 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:24:43,820 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:24:43,821 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:24:43,822 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:24:43,824 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:24:43,824 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:24:43,825 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:24:43,825 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:24:43,826 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:24:43,827 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:24:43,828 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:24:43,829 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:24:43,829 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:24:43,829 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:24:43,830 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:24:43,830 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:24:43,831 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:24:43,832 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:24:43,832 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 14:24:43,845 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:24:43,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:24:43,846 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:24:43,846 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:24:43,847 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:24:43,847 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:24:43,847 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:24:43,847 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:24:43,848 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:24:43,848 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:24:43,848 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:24:43,848 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:24:43,848 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:24:43,849 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:24:43,849 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:24:43,849 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:24:43,849 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:24:43,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:24:43,849 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:24:43,851 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:24:43,851 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:24:43,903 INFO ]: Repository-Root is: /tmp [2018-06-22 14:24:43,920 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:24:43,925 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:24:43,926 INFO ]: Initializing SmtParser... [2018-06-22 14:24:43,927 INFO ]: SmtParser initialized [2018-06-22 14:24:43,927 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-3.smt2 [2018-06-22 14:24:43,929 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 14:24:44,013 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-3.smt2 unknown [2018-06-22 14:24:44,489 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-3.smt2 [2018-06-22 14:24:44,494 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:24:44,506 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:24:44,506 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:24:44,506 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:24:44,506 INFO ]: ChcToBoogie initialized [2018-06-22 14:24:44,519 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:24:44" (1/1) ... [2018-06-22 14:24:44,577 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:24:44 Unit [2018-06-22 14:24:44,577 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:24:44,578 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:24:44,578 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:24:44,578 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:24:44,600 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:24:44" (1/1) ... [2018-06-22 14:24:44,600 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:24:44" (1/1) ... [2018-06-22 14:24:44,613 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:24:44" (1/1) ... [2018-06-22 14:24:44,613 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:24:44" (1/1) ... [2018-06-22 14:24:44,626 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:24:44" (1/1) ... [2018-06-22 14:24:44,627 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:24:44" (1/1) ... [2018-06-22 14:24:44,631 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:24:44" (1/1) ... [2018-06-22 14:24:44,635 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:24:44,636 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:24:44,636 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:24:44,636 INFO ]: RCFGBuilder initialized [2018-06-22 14:24:44,637 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:24:44" (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 14:24:44,649 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:24:44,649 INFO ]: Found specification of procedure False [2018-06-22 14:24:44,649 INFO ]: Found implementation of procedure False [2018-06-22 14:24:44,649 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:24:44,649 INFO ]: Found specification of procedure state [2018-06-22 14:24:44,649 INFO ]: Found implementation of procedure state [2018-06-22 14:24:44,649 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:24:44,649 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:24:44,649 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 14:24:45,092 INFO ]: Using library mode [2018-06-22 14:24:45,094 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:24:45 BoogieIcfgContainer [2018-06-22 14:24:45,094 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:24:45,096 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:24:45,096 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:24:45,103 INFO ]: TraceAbstraction initialized [2018-06-22 14:24:45,104 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:24:44" (1/3) ... [2018-06-22 14:24:45,105 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ffe1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:24:45, skipping insertion in model container [2018-06-22 14:24:45,105 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:24:44" (2/3) ... [2018-06-22 14:24:45,105 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ffe1c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:24:45, skipping insertion in model container [2018-06-22 14:24:45,105 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:24:45" (3/3) ... [2018-06-22 14:24:45,107 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:24:45,118 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:24:45,128 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:24:45,178 INFO ]: Using default assertion order modulation [2018-06-22 14:24:45,178 INFO ]: Interprodecural is true [2018-06-22 14:24:45,178 INFO ]: Hoare is false [2018-06-22 14:24:45,178 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:24:45,178 INFO ]: Backedges is TWOTRACK [2018-06-22 14:24:45,178 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:24:45,178 INFO ]: Difference is false [2018-06-22 14:24:45,179 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:24:45,179 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:24:45,197 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:24:45,209 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:24:45,210 INFO ]: Found error trace [2018-06-22 14:24:45,210 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:24:45,210 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:24:45,216 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 14:24:45,218 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:24:45,219 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:24:45,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:24:45,267 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:24:45,267 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:24:45,316 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:24:45,440 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:24:45,442 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:24:45,442 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:24:45,444 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:24:45,458 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:24:45,458 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:24:45,460 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:24:45,583 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:24:45,583 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:24:45,584 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:24:45,585 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:24:45,585 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:24:45,596 INFO ]: With dead ends: 13 [2018-06-22 14:24:45,596 INFO ]: Without dead ends: 13 [2018-06-22 14:24:45,597 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 14:24:45,615 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:24:45,651 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:24:45,652 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:24:45,653 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:24:45,653 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:24:45,654 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:24:45,654 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:24:45,654 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:24:45,654 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:24:45,655 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:24:45,655 INFO ]: Found error trace [2018-06-22 14:24:45,655 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:24:45,655 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:24:45,655 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 14:24:45,655 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:24:45,655 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:24:45,656 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:24:45,657 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:24:45,657 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:24:45,796 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:24:46,318 WARN ]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 14:24:46,617 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:24:46,617 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:24:46,617 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 14:24:46,626 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:24:46,737 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:24:46,748 INFO ]: Computing forward predicates... [2018-06-22 14:24:46,983 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:24:48,940 WARN ]: Spent 1.40 s on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2018-06-22 14:24:49,101 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:24:49,122 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:24:49,122 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 14:24:49,122 INFO ]: Interpolant automaton has 9 states [2018-06-22 14:24:49,122 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 14:24:49,123 INFO ]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-06-22 14:24:49,123 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 14:24:49,418 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:24:49,418 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:24:49,419 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:24:49,419 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 14:24:49,419 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:24:49,420 INFO ]: With dead ends: 17 [2018-06-22 14:24:49,420 INFO ]: Without dead ends: 17 [2018-06-22 14:24:49,421 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-06-22 14:24:49,421 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:24:49,424 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:24:49,425 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:24:49,425 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:24:49,425 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-06-22 14:24:49,425 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:24:49,425 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:24:49,425 INFO ]: Interpolant automaton has 9 states. [2018-06-22 14:24:49,425 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:24:49,426 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:24:49,426 INFO ]: Found error trace [2018-06-22 14:24:49,426 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:24:49,426 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:24:49,426 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 2 times [2018-06-22 14:24:49,426 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:24:49,426 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:24:49,427 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:24:49,427 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:24:49,427 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:24:49,661 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:24:50,281 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:24:50,281 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:24:50,281 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 14:24:50,292 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:24:50,418 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:24:50,418 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:24:50,429 INFO ]: Computing forward predicates... [2018-06-22 14:24:54,045 WARN ]: Spent 1.96 s on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2018-06-22 14:24:56,764 WARN ]: Spent 1.20 s on a formula simplification. DAG size of input: 267 DAG size of output: 99 [2018-06-22 14:24:58,163 WARN ]: Spent 393.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 55 [2018-06-22 14:24:58,549 INFO ]: Checked inductivity of 21 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:24:58,577 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:24:58,577 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-06-22 14:24:58,577 INFO ]: Interpolant automaton has 15 states [2018-06-22 14:24:58,577 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 14:24:58,580 INFO ]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-06-22 14:24:58,580 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 15 states. [2018-06-22 14:24:58,917 WARN ]: Spent 167.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 28 [2018-06-22 14:24:59,123 WARN ]: Spent 179.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 46 [2018-06-22 14:24:59,633 WARN ]: Spent 467.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2018-06-22 14:24:59,662 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:24:59,662 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:24:59,665 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:24:59,665 INFO ]: Start accepts. Automaton has 15 states. Word has length 21 [2018-06-22 14:24:59,665 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:24:59,666 INFO ]: With dead ends: 21 [2018-06-22 14:24:59,666 INFO ]: Without dead ends: 21 [2018-06-22 14:24:59,666 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2018-06-22 14:24:59,666 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:24:59,669 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:24:59,669 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:24:59,671 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:24:59,671 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-06-22 14:24:59,671 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:24:59,671 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:24:59,671 INFO ]: Interpolant automaton has 15 states. [2018-06-22 14:24:59,671 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:24:59,672 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:24:59,672 INFO ]: Found error trace [2018-06-22 14:24:59,672 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:24:59,672 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:24:59,672 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 3 times [2018-06-22 14:24:59,672 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:24:59,672 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:24:59,673 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:24:59,673 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:24:59,673 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:24:59,953 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:25:00,725 WARN ]: Spent 211.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 11 [2018-06-22 14:25:01,005 WARN ]: Spent 200.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 29 [2018-06-22 14:25:01,277 WARN ]: Spent 255.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 35 [2018-06-22 14:25:01,729 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:25:01,729 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:25:01,729 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 14:25:01,736 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:25:01,890 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-06-22 14:25:01,890 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:25:01,907 INFO ]: Computing forward predicates... [2018-06-22 14:25:02,398 WARN ]: Spent 203.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2018-06-22 14:25:03,833 WARN ]: Spent 294.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 53 [2018-06-22 14:25:04,959 WARN ]: Spent 359.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 59 [2018-06-22 14:25:06,868 WARN ]: Spent 411.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 55 [2018-06-22 14:25:07,017 INFO ]: Checked inductivity of 55 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 14:25:07,039 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:25:07,039 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 21 [2018-06-22 14:25:07,040 INFO ]: Interpolant automaton has 21 states [2018-06-22 14:25:07,040 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 14:25:07,040 INFO ]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2018-06-22 14:25:07,040 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 21 states. [2018-06-22 14:25:07,406 WARN ]: Spent 337.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2018-06-22 14:25:07,887 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2018-06-22 14:25:08,142 WARN ]: Spent 228.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2018-06-22 14:25:08,211 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:25:08,212 INFO ]: Finished difference Result 23 states and 24 transitions. [2018-06-22 14:25:08,212 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 14:25:08,212 INFO ]: Start accepts. Automaton has 21 states. Word has length 29 [2018-06-22 14:25:08,212 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:25:08,213 INFO ]: With dead ends: 23 [2018-06-22 14:25:08,213 INFO ]: Without dead ends: 23 [2018-06-22 14:25:08,213 INFO ]: 0 DeclaredPredicates, 48 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2018-06-22 14:25:08,213 INFO ]: Start minimizeSevpa. Operand 23 states. [2018-06-22 14:25:08,216 INFO ]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-06-22 14:25:08,216 INFO ]: Start removeUnreachable. Operand 23 states. [2018-06-22 14:25:08,217 INFO ]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-06-22 14:25:08,217 INFO ]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 29 [2018-06-22 14:25:08,217 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:25:08,217 INFO ]: Abstraction has 23 states and 24 transitions. [2018-06-22 14:25:08,217 INFO ]: Interpolant automaton has 21 states. [2018-06-22 14:25:08,217 INFO ]: Start isEmpty. Operand 23 states and 24 transitions. [2018-06-22 14:25:08,219 INFO ]: Finished isEmpty. Found accepting run of length 34 [2018-06-22 14:25:08,219 INFO ]: Found error trace [2018-06-22 14:25:08,219 INFO ]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:25:08,219 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:25:08,219 INFO ]: Analyzing trace with hash 800064122, now seen corresponding path program 4 times [2018-06-22 14:25:08,219 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:25:08,219 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:25:08,220 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:25:08,220 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:25:08,220 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:25:08,443 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:25:09,434 WARN ]: Spent 456.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2018-06-22 14:25:09,684 WARN ]: Spent 181.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 64 [2018-06-22 14:25:09,969 WARN ]: Spent 266.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 75 [2018-06-22 14:25:10,263 WARN ]: Spent 270.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 76 [2018-06-22 14:25:10,462 WARN ]: Spent 179.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 68 [2018-06-22 14:25:10,871 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 37 [2018-06-22 14:25:10,990 INFO ]: Checked inductivity of 78 backedges. 10 proven. 47 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-06-22 14:25:10,990 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:25:10,990 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 14:25:10,995 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 14:25:11,214 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 14:25:11,214 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:25:11,233 INFO ]: Computing forward predicates... [2018-06-22 14:25:11,588 WARN ]: Spent 197.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2018-06-22 14:25:20,364 WARN ]: Spent 7.75 s on a formula simplification. DAG size of input: 1675 DAG size of output: 313 [2018-06-22 14:25:23,835 WARN ]: Spent 3.08 s on a formula simplification. DAG size of input: 779 DAG size of output: 178 [2018-06-22 14:25:27,114 WARN ]: Spent 2.97 s on a formula simplification. DAG size of input: 536 DAG size of output: 170 [2018-06-22 14:25:28,007 WARN ]: Spent 544.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 93 [2018-06-22 14:25:28,320 WARN ]: Spent 147.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 36 [2018-06-22 14:25:28,640 WARN ]: Spent 225.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 35 [2018-06-22 14:25:28,668 INFO ]: Checked inductivity of 78 backedges. 25 proven. 29 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-06-22 14:25:28,689 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:25:28,689 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 23 [2018-06-22 14:25:28,689 INFO ]: Interpolant automaton has 23 states [2018-06-22 14:25:28,689 INFO ]: Constructing interpolant automaton starting with 23 interpolants. [2018-06-22 14:25:28,689 INFO ]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2018-06-22 14:25:28,690 INFO ]: Start difference. First operand 23 states and 24 transitions. Second operand 23 states. [2018-06-22 14:25:33,121 WARN ]: Spent 4.35 s on a formula simplification. DAG size of input: 378 DAG size of output: 292 [2018-06-22 14:25:33,987 WARN ]: Spent 754.00 ms on a formula simplification. DAG size of input: 384 DAG size of output: 40 [2018-06-22 14:25:35,048 WARN ]: Spent 980.00 ms on a formula simplification. DAG size of input: 385 DAG size of output: 87 [2018-06-22 14:25:36,043 WARN ]: Spent 909.00 ms on a formula simplification. DAG size of input: 387 DAG size of output: 87 [2018-06-22 14:25:36,981 WARN ]: Spent 853.00 ms on a formula simplification. DAG size of input: 390 DAG size of output: 86 [2018-06-22 14:25:36,982 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:25:36,982 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 14:25:36,982 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:25:36,982 INFO ]: Start accepts. Automaton has 23 states. Word has length 33 [2018-06-22 14:25:36,983 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:25:36,983 INFO ]: With dead ends: 15 [2018-06-22 14:25:36,983 INFO ]: Without dead ends: 0 [2018-06-22 14:25:36,983 INFO ]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2018-06-22 14:25:36,983 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 14:25:36,983 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 14:25:36,983 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 14:25:36,983 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 14:25:36,983 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2018-06-22 14:25:36,983 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:25:36,983 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 14:25:36,983 INFO ]: Interpolant automaton has 23 states. [2018-06-22 14:25:36,983 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 14:25:36,984 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 14:25:36,990 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:25:36 BoogieIcfgContainer [2018-06-22 14:25:36,990 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:25:36,990 INFO ]: Toolchain (without parser) took 52495.78 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 243.8 MB in the beginning and 654.1 MB in the end (delta: -410.3 MB). Peak memory consumption was 617.3 MB. Max. memory is 3.6 GB. [2018-06-22 14:25:36,992 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:25:36,992 INFO ]: ChcToBoogie took 71.42 ms. Allocated memory is still 309.3 MB. Free memory was 243.8 MB in the beginning and 241.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:25:36,993 INFO ]: Boogie Preprocessor took 57.34 ms. Allocated memory is still 309.3 MB. Free memory was 241.8 MB in the beginning and 239.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:25:36,993 INFO ]: RCFGBuilder took 457.99 ms. Allocated memory is still 309.3 MB. Free memory was 239.8 MB in the beginning and 211.9 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:25:36,994 INFO ]: TraceAbstraction took 51894.31 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 211.9 MB in the beginning and 654.1 MB in the end (delta: -442.3 MB). Peak memory consumption was 585.4 MB. Max. memory is 3.6 GB. [2018-06-22 14:25:36,996 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 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 71.42 ms. Allocated memory is still 309.3 MB. Free memory was 243.8 MB in the beginning and 241.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 57.34 ms. Allocated memory is still 309.3 MB. Free memory was 241.8 MB in the beginning and 239.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 457.99 ms. Allocated memory is still 309.3 MB. Free memory was 239.8 MB in the beginning and 211.9 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 51894.31 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 211.9 MB in the beginning and 654.1 MB in the end (delta: -442.3 MB). Peak memory consumption was 585.4 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, 51.8s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 11.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 115 SDslu, 197 SDs, 0 SdLazy, 184 SolverSat, 124 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 75 SyntacticMatches, 5 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 38.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 1.3s SatisfiabilityAnalysisTime, 38.9s InterpolantComputationTime, 201 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 500700 SizeOfPredicates, 1457 NumberOfNonLiveVariables, 1827 ConjunctsInSsa, 275 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 132/314 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-3.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-25-37-011.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_array_inversion-3.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-25-37-011.csv Received shutdown request...