java -Xss1g -Xmx8000000000 -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-comp18-benchmarks/lra/chc-lra-0134.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-20 23:02:58,863 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-20 23:02:58,866 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-20 23:02:58,879 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-20 23:02:58,879 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-20 23:02:58,880 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-20 23:02:58,881 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-20 23:02:58,884 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-20 23:02:58,885 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-20 23:02:58,887 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-20 23:02:58,888 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-20 23:02:58,888 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-20 23:02:58,889 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-20 23:02:58,890 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-20 23:02:58,890 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-20 23:02:58,893 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-20 23:02:58,895 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-20 23:02:58,896 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-20 23:02:58,906 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-20 23:02:58,906 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-20 23:02:58,907 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-20 23:02:58,913 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-20 23:02:58,913 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-20 23:02:58,913 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-20 23:02:58,914 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-20 23:02:58,915 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-20 23:02:58,918 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-20 23:02:58,919 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-20 23:02:58,920 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-20 23:02:58,920 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-20 23:02:58,921 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-20 23:02:58,924 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-20 23:02:58,925 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-20 23:02:58,925 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-20 23:02:58,926 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-20 23:02:58,926 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-20 23:02:58,949 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-20 23:02:58,950 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-20 23:02:58,950 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-20 23:02:58,950 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-20 23:02:58,952 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-20 23:02:58,952 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-20 23:02:58,952 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-20 23:02:58,952 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-20 23:02:58,953 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-20 23:02:58,953 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-20 23:02:58,953 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-20 23:02:58,953 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-20 23:02:58,953 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-20 23:02:58,953 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-20 23:02:58,954 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-20 23:02:58,954 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-20 23:02:58,954 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-20 23:02:58,956 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-20 23:02:58,957 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-20 23:02:59,005 INFO ]: Repository-Root is: /tmp [2018-06-20 23:02:59,019 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-20 23:02:59,023 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-20 23:02:59,024 INFO ]: Initializing SmtParser... [2018-06-20 23:02:59,025 INFO ]: SmtParser initialized [2018-06-20 23:02:59,025 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp18-benchmarks/lra/chc-lra-0134.smt2 [2018-06-20 23:02:59,026 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 [2018-06-20 23:02:59,116 INFO ]: Executing SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0134.smt2 unknown [2018-06-20 23:03:02,445 INFO ]: Succesfully executed SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0134.smt2 [2018-06-20 23:03:02,450 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-20 23:03:02,456 INFO ]: Walking toolchain with 4 elements. [2018-06-20 23:03:02,457 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-20 23:03:02,457 INFO ]: Initializing ChcToBoogie... [2018-06-20 23:03:02,457 INFO ]: ChcToBoogie initialized [2018-06-20 23:03:02,460 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 20.06 11:03:02" (1/1) ... [2018-06-20 23:03:02,635 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:02 Unit [2018-06-20 23:03:02,635 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-20 23:03:02,636 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-20 23:03:02,636 INFO ]: Initializing Boogie Preprocessor... [2018-06-20 23:03:02,636 INFO ]: Boogie Preprocessor initialized [2018-06-20 23:03:02,656 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:02" (1/1) ... [2018-06-20 23:03:02,656 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:02" (1/1) ... [2018-06-20 23:03:02,756 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:02" (1/1) ... [2018-06-20 23:03:02,757 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:02" (1/1) ... [2018-06-20 23:03:02,863 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:02" (1/1) ... [2018-06-20 23:03:02,864 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:02" (1/1) ... [2018-06-20 23:03:02,903 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:02" (1/1) ... [2018-06-20 23:03:02,939 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-20 23:03:02,939 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-20 23:03:02,939 INFO ]: Initializing RCFGBuilder... [2018-06-20 23:03:02,939 INFO ]: RCFGBuilder initialized [2018-06-20 23:03:02,940 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:02" (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) [2018-06-20 23:03:02,950 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-20 23:03:02,951 INFO ]: Found specification of procedure gotoProc [2018-06-20 23:03:02,951 INFO ]: Found implementation of procedure gotoProc [2018-06-20 23:03:02,951 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-20 23:03:02,951 INFO ]: Found specification of procedure Ultimate.START [2018-06-20 23:03:02,951 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 [2018-06-20 23:03:11,850 INFO ]: Using library mode [2018-06-20 23:03:11,851 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 11:03:11 BoogieIcfgContainer [2018-06-20 23:03:11,851 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-20 23:03:11,852 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-20 23:03:11,852 INFO ]: Initializing TraceAbstraction... [2018-06-20 23:03:11,855 INFO ]: TraceAbstraction initialized [2018-06-20 23:03:11,855 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 20.06 11:03:02" (1/3) ... [2018-06-20 23:03:11,856 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b6c3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 20.06 11:03:11, skipping insertion in model container [2018-06-20 23:03:11,856 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:03:02" (2/3) ... [2018-06-20 23:03:11,856 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54b6c3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 11:03:11, skipping insertion in model container [2018-06-20 23:03:11,857 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 11:03:11" (3/3) ... [2018-06-20 23:03:11,859 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-20 23:03:11,868 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-20 23:03:11,876 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-20 23:03:11,926 INFO ]: Using default assertion order modulation [2018-06-20 23:03:11,927 INFO ]: Interprodecural is true [2018-06-20 23:03:11,927 INFO ]: Hoare is false [2018-06-20 23:03:11,927 INFO ]: Compute interpolants for FPandBP [2018-06-20 23:03:11,927 INFO ]: Backedges is TWOTRACK [2018-06-20 23:03:11,927 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-20 23:03:11,927 INFO ]: Difference is false [2018-06-20 23:03:11,927 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-20 23:03:11,927 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-20 23:03:11,940 INFO ]: Start isEmpty. Operand 10 states. [2018-06-20 23:03:11,950 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-20 23:03:11,950 INFO ]: Found error trace [2018-06-20 23:03:11,951 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:03:11,951 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:03:11,959 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-20 23:03:11,961 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:03:11,961 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:03:11,996 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:11,996 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:03:11,996 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:12,333 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:03:12,561 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:03:12,563 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-20 23:03:12,563 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-20 23:03:12,564 INFO ]: Interpolant automaton has 3 states [2018-06-20 23:03:12,575 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-20 23:03:12,575 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-20 23:03:12,577 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-20 23:03:13,076 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:03:13,076 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-20 23:03:13,095 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-20 23:03:13,096 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-20 23:03:13,096 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:03:13,103 INFO ]: With dead ends: 9 [2018-06-20 23:03:13,104 INFO ]: Without dead ends: 9 [2018-06-20 23:03:13,105 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 [2018-06-20 23:03:13,119 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-20 23:03:13,133 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-20 23:03:13,134 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-20 23:03:13,134 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-20 23:03:13,135 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-20 23:03:13,135 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:03:13,135 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-20 23:03:13,136 INFO ]: Interpolant automaton has 3 states. [2018-06-20 23:03:13,136 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-20 23:03:13,136 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-20 23:03:13,136 INFO ]: Found error trace [2018-06-20 23:03:13,136 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:03:13,136 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:03:13,136 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-20 23:03:13,136 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:03:13,136 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:03:13,137 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:13,137 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:03:13,137 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:14,275 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:03:15,806 WARN ]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-20 23:03:15,882 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:03:15,882 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:03:15,882 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) [2018-06-20 23:03:15,894 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-20 23:03:17,179 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:03:17,295 INFO ]: Computing forward predicates... [2018-06-20 23:03:17,624 WARN ]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-20 23:03:22,823 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:03:22,872 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 23:03:22,872 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-20 23:03:22,872 INFO ]: Interpolant automaton has 6 states [2018-06-20 23:03:22,873 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-20 23:03:22,873 INFO ]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-20 23:03:22,873 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-20 23:03:23,511 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:03:23,511 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-20 23:03:23,511 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-20 23:03:23,511 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-20 23:03:23,511 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:03:23,512 INFO ]: With dead ends: 10 [2018-06-20 23:03:23,512 INFO ]: Without dead ends: 10 [2018-06-20 23:03:23,512 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-06-20 23:03:23,512 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-20 23:03:23,513 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-20 23:03:23,513 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-20 23:03:23,513 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-20 23:03:23,514 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-20 23:03:23,514 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:03:23,514 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-20 23:03:23,514 INFO ]: Interpolant automaton has 6 states. [2018-06-20 23:03:23,514 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-20 23:03:23,514 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-20 23:03:23,514 INFO ]: Found error trace [2018-06-20 23:03:23,514 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:03:23,514 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:03:23,514 INFO ]: Analyzing trace with hash -2073468660, now seen corresponding path program 2 times [2018-06-20 23:03:23,514 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:03:23,514 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:03:23,515 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:23,515 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:03:23,515 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:25,015 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:03:27,206 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:03:27,206 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:03:27,206 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 [2018-06-20 23:03:27,214 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-20 23:03:28,686 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-20 23:03:28,686 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:03:28,867 INFO ]: Computing forward predicates... [2018-06-20 23:03:36,325 WARN ]: Spent 140.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 21 [2018-06-20 23:03:36,331 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:03:36,371 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 23:03:36,371 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-20 23:03:36,371 INFO ]: Interpolant automaton has 8 states [2018-06-20 23:03:36,371 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-20 23:03:36,371 INFO ]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-20 23:03:36,372 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-20 23:03:37,097 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:03:37,097 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-20 23:03:37,098 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-20 23:03:37,098 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-20 23:03:37,098 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:03:37,099 INFO ]: With dead ends: 11 [2018-06-20 23:03:37,099 INFO ]: Without dead ends: 11 [2018-06-20 23:03:37,099 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-06-20 23:03:37,099 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-20 23:03:37,100 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-20 23:03:37,100 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-20 23:03:37,101 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-20 23:03:37,101 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-20 23:03:37,101 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:03:37,101 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-20 23:03:37,101 INFO ]: Interpolant automaton has 8 states. [2018-06-20 23:03:37,101 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-20 23:03:37,101 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-20 23:03:37,101 INFO ]: Found error trace [2018-06-20 23:03:37,101 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:03:37,101 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:03:37,101 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 3 times [2018-06-20 23:03:37,101 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:03:37,102 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:03:37,102 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:37,102 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-20 23:03:37,102 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:03:38,755 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:03:41,661 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:03:41,662 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:03:41,662 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 [2018-06-20 23:03:41,672 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-20 23:03:43,657 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-20 23:03:43,658 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:03:43,868 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-20 23:03:54,997 INFO ]: Timeout while computing interpolants [2018-06-20 23:03:55,198 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-20 23:03:55,198 WARN ]: Verification canceled [2018-06-20 23:03:55,203 WARN ]: Timeout [2018-06-20 23:03:55,203 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 11:03:55 BoogieIcfgContainer [2018-06-20 23:03:55,203 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-20 23:03:55,204 INFO ]: Toolchain (without parser) took 52753.09 ms. Allocated memory was 390.6 MB in the beginning and 2.8 GB in the end (delta: 2.4 GB). Free memory was 279.2 MB in the beginning and 484.2 MB in the end (delta: -205.0 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-06-20 23:03:55,205 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2018-06-20 23:03:55,205 INFO ]: ChcToBoogie took 178.44 ms. Allocated memory is still 390.6 MB. Free memory was 279.2 MB in the beginning and 266.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2018-06-20 23:03:55,205 INFO ]: Boogie Preprocessor took 303.42 ms. Allocated memory is still 390.6 MB. Free memory was 266.2 MB in the beginning and 240.1 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2018-06-20 23:03:55,206 INFO ]: RCFGBuilder took 8911.50 ms. Allocated memory was 390.6 MB in the beginning and 1.2 GB in the end (delta: 818.4 MB). Free memory was 240.1 MB in the beginning and 144.3 MB in the end (delta: 95.8 MB). Peak memory consumption was 927.9 MB. Max. memory is 7.1 GB. [2018-06-20 23:03:55,206 INFO ]: TraceAbstraction took 43350.89 ms. Allocated memory was 1.2 GB in the beginning and 2.8 GB in the end (delta: 1.6 GB). Free memory was 144.3 MB in the beginning and 484.2 MB in the end (delta: -339.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-06-20 23:03:55,208 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 306.7 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * ChcToBoogie took 178.44 ms. Allocated memory is still 390.6 MB. Free memory was 279.2 MB in the beginning and 266.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 303.42 ms. Allocated memory is still 390.6 MB. Free memory was 266.2 MB in the beginning and 240.1 MB in the end (delta: 26.1 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8911.50 ms. Allocated memory was 390.6 MB in the beginning and 1.2 GB in the end (delta: 818.4 MB). Free memory was 240.1 MB in the beginning and 144.3 MB in the end (delta: 95.8 MB). Peak memory consumption was 927.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 43350.89 ms. Allocated memory was 1.2 GB in the beginning and 2.8 GB in the end (delta: 1.6 GB). Free memory was 144.3 MB in the beginning and 484.2 MB in the end (delta: -339.9 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 11 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1682 quantified variables from 8 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 43.2s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 40 SDs, 0 SdLazy, 20 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 4.7s SatisfiabilityAnalysisTime, 17.3s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 898 SizeOfPredicates, 6 NumberOfNonLiveVariables, 11081 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/chc-lra-0134.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-20_23-03-55-218.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/chc-lra-0134.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-20_23-03-55-218.csv Completed graceful shutdown