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_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 04:42:54,879 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:42:54,881 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:42:54,891 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:42:54,892 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:42:54,893 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:42:54,894 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:42:54,896 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:42:54,898 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:42:54,898 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:42:54,900 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:42:54,900 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:42:54,901 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:42:54,902 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:42:54,905 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:42:54,906 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:42:54,918 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:42:54,920 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:42:54,921 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:42:54,922 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:42:54,923 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:42:54,929 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:42:54,929 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:42:54,929 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:42:54,930 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:42:54,931 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:42:54,932 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:42:54,932 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:42:54,940 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:42:54,940 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:42:54,941 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:42:54,941 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:42:54,941 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:42:54,942 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:42:54,943 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:42:54,943 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:42:54,965 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:42:54,965 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:42:54,966 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:42:54,966 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:42:54,968 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:42:54,968 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:42:54,968 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:42:54,969 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:42:54,969 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:42:54,969 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:42:54,969 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:42:54,969 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:42:54,970 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:42:54,970 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:42:54,970 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:42:54,970 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:42:54,970 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:42:54,972 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:42:54,973 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:42:55,035 INFO ]: Repository-Root is: /tmp [2018-06-22 04:42:55,050 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:42:55,057 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:42:55,058 INFO ]: Initializing SmtParser... [2018-06-22 04:42:55,059 INFO ]: SmtParser initialized [2018-06-22 04:42:55,059 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-1.smt2 [2018-06-22 04:42:55,060 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 04:42:55,153 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-1.smt2 unknown [2018-06-22 04:42:55,621 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/simple_array_inversion-1.smt2 [2018-06-22 04:42:55,626 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:42:55,640 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:42:55,641 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:42:55,641 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:42:55,641 INFO ]: ChcToBoogie initialized [2018-06-22 04:42:55,647 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:42:55" (1/1) ... [2018-06-22 04:42:55,719 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:55 Unit [2018-06-22 04:42:55,720 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:42:55,720 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:42:55,721 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:42:55,721 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:42:55,741 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:55" (1/1) ... [2018-06-22 04:42:55,741 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:55" (1/1) ... [2018-06-22 04:42:55,748 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:55" (1/1) ... [2018-06-22 04:42:55,748 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:55" (1/1) ... [2018-06-22 04:42:55,758 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:55" (1/1) ... [2018-06-22 04:42:55,760 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:55" (1/1) ... [2018-06-22 04:42:55,763 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:55" (1/1) ... [2018-06-22 04:42:55,766 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:42:55,769 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:42:55,769 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:42:55,769 INFO ]: RCFGBuilder initialized [2018-06-22 04:42:55,770 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:55" (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 04:42:55,785 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:42:55,785 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:42:55,785 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:42:55,785 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:42:55,785 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:42:55,785 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 04:42:56,192 INFO ]: Using library mode [2018-06-22 04:42:56,193 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:42:56 BoogieIcfgContainer [2018-06-22 04:42:56,193 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:42:56,195 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:42:56,195 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:42:56,205 INFO ]: TraceAbstraction initialized [2018-06-22 04:42:56,205 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:42:55" (1/3) ... [2018-06-22 04:42:56,206 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756cc0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:42:56, skipping insertion in model container [2018-06-22 04:42:56,206 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:42:55" (2/3) ... [2018-06-22 04:42:56,206 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756cc0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:42:56, skipping insertion in model container [2018-06-22 04:42:56,206 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:42:56" (3/3) ... [2018-06-22 04:42:56,208 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:42:56,218 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:42:56,227 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:42:56,290 INFO ]: Using default assertion order modulation [2018-06-22 04:42:56,290 INFO ]: Interprodecural is true [2018-06-22 04:42:56,290 INFO ]: Hoare is false [2018-06-22 04:42:56,291 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:42:56,291 INFO ]: Backedges is TWOTRACK [2018-06-22 04:42:56,291 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:42:56,291 INFO ]: Difference is false [2018-06-22 04:42:56,291 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:42:56,291 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:42:56,308 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:42:56,321 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:42:56,322 INFO ]: Found error trace [2018-06-22 04:42:56,322 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:42:56,323 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:42:56,328 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:42:56,330 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:42:56,331 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:42:56,380 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:56,380 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:42:56,380 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:56,454 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:42:56,584 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:42:56,586 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:42:56,586 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:42:56,590 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:42:56,605 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:42:56,605 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:42:56,609 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:42:56,705 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:42:56,705 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:42:56,706 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:42:56,708 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:42:56,708 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:42:56,718 INFO ]: With dead ends: 9 [2018-06-22 04:42:56,718 INFO ]: Without dead ends: 9 [2018-06-22 04:42:56,720 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:42:56,738 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:42:56,760 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:42:56,761 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:42:56,761 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:42:56,763 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:42:56,763 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:42:56,763 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:42:56,763 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:42:56,763 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:42:56,763 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:42:56,763 INFO ]: Found error trace [2018-06-22 04:42:56,763 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:42:56,763 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:42:56,763 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:42:56,763 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:42:56,763 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:42:56,765 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:56,765 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:42:56,765 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:56,876 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:42:57,076 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:42:57,076 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:42:57,076 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 04:42:57,105 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:42:57,233 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:42:57,246 INFO ]: Computing forward predicates... [2018-06-22 04:42:58,548 WARN ]: Spent 470.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2018-06-22 04:42:58,566 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:42:58,589 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:42:58,589 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 04:42:58,589 INFO ]: Interpolant automaton has 5 states [2018-06-22 04:42:58,589 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 04:42:58,589 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-22 04:42:58,590 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 04:42:58,679 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:42:58,679 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:42:58,680 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:42:58,680 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 04:42:58,680 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:42:58,681 INFO ]: With dead ends: 11 [2018-06-22 04:42:58,681 INFO ]: Without dead ends: 11 [2018-06-22 04:42:58,681 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-22 04:42:58,681 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:42:58,682 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:42:58,682 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:42:58,683 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:42:58,683 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:42:58,683 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:42:58,683 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:42:58,683 INFO ]: Interpolant automaton has 5 states. [2018-06-22 04:42:58,683 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:42:58,683 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:42:58,683 INFO ]: Found error trace [2018-06-22 04:42:58,683 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:42:58,683 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:42:58,684 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 04:42:58,685 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:42:58,685 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:42:58,686 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:58,686 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:42:58,686 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:42:58,876 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:42:59,371 WARN ]: Spent 277.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2018-06-22 04:42:59,569 WARN ]: Spent 136.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 7 [2018-06-22 04:42:59,728 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:42:59,728 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:42:59,728 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 04:42:59,734 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:42:59,853 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:42:59,853 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:42:59,863 INFO ]: Computing forward predicates... [2018-06-22 04:43:01,128 WARN ]: Spent 170.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 17 [2018-06-22 04:43:02,945 WARN ]: Spent 1.05 s on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2018-06-22 04:43:02,957 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:43:02,994 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:43:02,994 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 04:43:02,994 INFO ]: Interpolant automaton has 9 states [2018-06-22 04:43:02,995 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 04:43:02,995 INFO ]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-06-22 04:43:02,995 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-22 04:43:04,040 WARN ]: Spent 916.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 13 [2018-06-22 04:43:04,178 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:43:04,178 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:43:04,179 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:43:04,179 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 04:43:04,179 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:43:04,179 INFO ]: With dead ends: 13 [2018-06-22 04:43:04,179 INFO ]: Without dead ends: 13 [2018-06-22 04:43:04,180 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2018-06-22 04:43:04,180 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:43:04,182 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:43:04,182 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:43:04,183 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:43:04,183 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 04:43:04,183 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:43:04,183 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:43:04,183 INFO ]: Interpolant automaton has 9 states. [2018-06-22 04:43:04,183 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:43:04,183 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:43:04,183 INFO ]: Found error trace [2018-06-22 04:43:04,183 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:43:04,184 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:43:04,184 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-22 04:43:04,184 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:43:04,184 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:43:04,185 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:43:04,185 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:43:04,185 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:43:04,535 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:43:05,137 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2018-06-22 04:43:05,375 WARN ]: Spent 174.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 39 [2018-06-22 04:43:05,431 INFO ]: Checked inductivity of 15 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 04:43:05,431 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:43:05,432 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 04:43:05,438 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:43:05,607 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 04:43:05,607 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:43:05,621 INFO ]: Computing forward predicates... [2018-06-22 04:43:10,020 WARN ]: Spent 1.07 s on a formula simplification. DAG size of input: 232 DAG size of output: 72 [2018-06-22 04:43:24,299 WARN ]: Spent 9.73 s on a formula simplification. DAG size of input: 769 DAG size of output: 78 [2018-06-22 04:43:39,147 WARN ]: Spent 12.21 s on a formula simplification. DAG size of input: 880 DAG size of output: 73 [2018-06-22 04:43:41,043 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:43:41,066 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:43:41,066 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2018-06-22 04:43:41,066 INFO ]: Interpolant automaton has 12 states [2018-06-22 04:43:41,067 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 04:43:41,067 INFO ]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-06-22 04:43:41,067 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 12 states. [2018-06-22 04:43:41,504 WARN ]: Spent 303.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2018-06-22 04:43:41,521 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:43:41,528 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:43:41,529 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 04:43:41,529 INFO ]: Start accepts. Automaton has 12 states. Word has length 12 [2018-06-22 04:43:41,529 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:43:41,529 INFO ]: With dead ends: 9 [2018-06-22 04:43:41,529 INFO ]: Without dead ends: 0 [2018-06-22 04:43:41,530 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:43:41,530 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 04:43:41,530 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 04:43:41,530 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 04:43:41,530 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 04:43:41,530 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2018-06-22 04:43:41,530 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:43:41,530 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 04:43:41,530 INFO ]: Interpolant automaton has 12 states. [2018-06-22 04:43:41,530 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 04:43:41,530 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 04:43:41,538 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:43:41 BoogieIcfgContainer [2018-06-22 04:43:41,538 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:43:41,539 INFO ]: Toolchain (without parser) took 45907.73 ms. Allocated memory was 309.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 250.9 MB in the beginning and 937.8 MB in the end (delta: -686.9 MB). Peak memory consumption was 411.5 MB. Max. memory is 3.6 GB. [2018-06-22 04:43:41,540 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:43:41,543 INFO ]: ChcToBoogie took 79.59 ms. Allocated memory is still 309.3 MB. Free memory was 250.9 MB in the beginning and 247.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:43:41,544 INFO ]: Boogie Preprocessor took 46.09 ms. Allocated memory is still 309.3 MB. Free memory was 247.9 MB in the beginning and 246.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 04:43:41,544 INFO ]: RCFGBuilder took 423.83 ms. Allocated memory is still 309.3 MB. Free memory was 245.9 MB in the beginning and 221.9 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:43:41,545 INFO ]: TraceAbstraction took 45343.89 ms. Allocated memory was 309.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 221.9 MB in the beginning and 937.8 MB in the end (delta: -715.9 MB). Peak memory consumption was 382.4 MB. Max. memory is 3.6 GB. [2018-06-22 04:43:41,559 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 309.3 MB. Free memory is still 275.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 79.59 ms. Allocated memory is still 309.3 MB. Free memory was 250.9 MB in the beginning and 247.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 46.09 ms. Allocated memory is still 309.3 MB. Free memory was 247.9 MB in the beginning and 246.9 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 423.83 ms. Allocated memory is still 309.3 MB. Free memory was 245.9 MB in the beginning and 221.9 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 45343.89 ms. Allocated memory was 309.3 MB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Free memory was 221.9 MB in the beginning and 937.8 MB in the end (delta: -715.9 MB). Peak memory consumption was 382.4 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 2 procedures, 10 locations, 1 error locations. SAFE Result, 45.2s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 1.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 24 SDtfs, 1 SDslu, 52 SDs, 0 SdLazy, 24 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 28.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 41.9s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 9839 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1146 ConjunctsInSsa, 167 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 9/44 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_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-43-41-572.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/simple_array_inversion-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-43-41-572.csv Received shutdown request...