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/pipeline.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:11:36,934 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:11:36,937 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:11:36,948 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:11:36,949 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:11:36,949 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:11:36,950 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:11:36,954 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:11:36,956 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:11:36,956 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:11:36,958 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:11:36,958 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:11:36,959 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:11:36,960 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:11:36,961 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:11:36,961 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:11:36,965 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:11:36,966 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:11:36,976 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:11:36,977 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:11:36,978 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:11:36,980 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:11:36,980 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:11:36,980 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:11:36,981 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:11:36,986 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:11:36,987 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:11:36,987 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:11:36,988 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:11:36,988 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:11:36,989 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:11:36,990 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:11:36,993 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:11:36,993 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:11:36,994 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:11:36,994 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 14:11:37,016 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:11:37,016 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:11:37,017 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:11:37,017 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:11:37,018 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:11:37,018 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:11:37,018 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:11:37,018 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:11:37,018 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:11:37,019 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:11:37,019 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:11:37,019 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:11:37,019 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:11:37,019 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:11:37,019 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:11:37,020 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:11:37,022 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:11:37,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:11:37,023 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:11:37,025 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:11:37,025 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:11:37,072 INFO ]: Repository-Root is: /tmp [2018-06-22 14:11:37,086 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:11:37,090 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:11:37,091 INFO ]: Initializing SmtParser... [2018-06-22 14:11:37,092 INFO ]: SmtParser initialized [2018-06-22 14:11:37,093 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/pipeline.smt2 [2018-06-22 14:11:37,094 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 14:11:37,173 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/pipeline.smt2 unknown [2018-06-22 14:11:38,137 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/pipeline.smt2 [2018-06-22 14:11:38,141 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:11:38,148 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:11:38,148 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:11:38,148 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:11:38,148 INFO ]: ChcToBoogie initialized [2018-06-22 14:11:38,151 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:11:38" (1/1) ... [2018-06-22 14:11:38,248 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:11:38 Unit [2018-06-22 14:11:38,248 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:11:38,249 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:11:38,249 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:11:38,249 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:11:38,271 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:11:38" (1/1) ... [2018-06-22 14:11:38,272 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:11:38" (1/1) ... [2018-06-22 14:11:38,304 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:11:38" (1/1) ... [2018-06-22 14:11:38,305 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:11:38" (1/1) ... [2018-06-22 14:11:38,343 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:11:38" (1/1) ... [2018-06-22 14:11:38,344 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:11:38" (1/1) ... [2018-06-22 14:11:38,360 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:11:38" (1/1) ... [2018-06-22 14:11:38,367 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:11:38,368 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:11:38,368 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:11:38,368 INFO ]: RCFGBuilder initialized [2018-06-22 14:11:38,369 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:11:38" (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 14:11:38,379 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:11:38,379 INFO ]: Found specification of procedure False [2018-06-22 14:11:38,379 INFO ]: Found implementation of procedure False [2018-06-22 14:11:38,379 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:11:38,379 INFO ]: Found specification of procedure state [2018-06-22 14:11:38,379 INFO ]: Found implementation of procedure state [2018-06-22 14:11:38,379 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:11:38,379 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:11:38,379 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 14:11:39,004 INFO ]: Using library mode [2018-06-22 14:11:39,004 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:11:39 BoogieIcfgContainer [2018-06-22 14:11:39,004 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:11:39,006 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:11:39,006 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:11:39,011 INFO ]: TraceAbstraction initialized [2018-06-22 14:11:39,012 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:11:38" (1/3) ... [2018-06-22 14:11:39,012 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617bede9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:11:39, skipping insertion in model container [2018-06-22 14:11:39,012 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:11:38" (2/3) ... [2018-06-22 14:11:39,013 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617bede9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:11:39, skipping insertion in model container [2018-06-22 14:11:39,013 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:11:39" (3/3) ... [2018-06-22 14:11:39,015 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:11:39,024 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:11:39,034 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:11:39,079 INFO ]: Using default assertion order modulation [2018-06-22 14:11:39,079 INFO ]: Interprodecural is true [2018-06-22 14:11:39,079 INFO ]: Hoare is false [2018-06-22 14:11:39,079 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:11:39,079 INFO ]: Backedges is TWOTRACK [2018-06-22 14:11:39,079 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:11:39,079 INFO ]: Difference is false [2018-06-22 14:11:39,079 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:11:39,079 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:11:39,095 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:11:39,109 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:11:39,109 INFO ]: Found error trace [2018-06-22 14:11:39,110 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:11:39,110 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:11:39,117 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 14:11:39,119 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:11:39,119 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:11:39,164 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:11:39,164 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:11:39,164 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:11:39,226 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:11:39,430 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:11:39,432 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:11:39,432 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:11:39,434 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:11:39,451 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:11:39,452 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:11:39,455 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:11:39,657 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:11:39,658 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:11:39,659 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:11:39,660 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:11:39,660 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:11:39,673 INFO ]: With dead ends: 13 [2018-06-22 14:11:39,673 INFO ]: Without dead ends: 13 [2018-06-22 14:11:39,675 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:11:39,694 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:11:39,730 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:11:39,732 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:11:39,732 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:11:39,733 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:11:39,734 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:11:39,734 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:11:39,734 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:11:39,734 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:11:39,735 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:11:39,735 INFO ]: Found error trace [2018-06-22 14:11:39,735 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:11:39,735 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:11:39,736 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 14:11:39,736 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:11:39,736 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:11:39,737 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:11:39,737 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:11:39,737 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:11:39,961 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:11:40,401 WARN ]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-22 14:11:40,572 WARN ]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 14:11:40,842 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:11:40,842 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:11:40,842 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 14:11:40,858 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:11:41,012 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:11:41,031 INFO ]: Computing forward predicates... [2018-06-22 14:12:04,323 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:12:04,350 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:12:04,350 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 14:12:04,350 INFO ]: Interpolant automaton has 9 states [2018-06-22 14:12:04,350 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 14:12:04,350 INFO ]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-06-22 14:12:04,351 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-22 14:12:04,801 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:12:04,801 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:12:04,802 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:12:04,802 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-22 14:12:04,802 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:12:04,802 INFO ]: With dead ends: 17 [2018-06-22 14:12:04,802 INFO ]: Without dead ends: 17 [2018-06-22 14:12:04,803 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-06-22 14:12:04,804 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:12:04,806 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:12:04,806 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:12:04,807 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:12:04,807 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2018-06-22 14:12:04,807 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:12:04,807 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:12:04,807 INFO ]: Interpolant automaton has 9 states. [2018-06-22 14:12:04,807 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:12:04,808 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:12:04,808 INFO ]: Found error trace [2018-06-22 14:12:04,808 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:12:04,808 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:12:04,808 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 2 times [2018-06-22 14:12:04,808 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:12:04,808 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:12:04,809 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:12:04,809 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:12:04,809 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:12:05,071 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:12:05,979 WARN ]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 14:12:06,268 WARN ]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 14:12:06,616 WARN ]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 14:12:06,857 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 14:12:07,126 WARN ]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:12:07,230 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:12:07,230 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:12:07,230 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 14:12:07,241 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:12:07,487 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:12:07,488 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:12:07,511 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-22 14:12:42,745 INFO ]: Timeout while computing interpolants [2018-06-22 14:12:42,946 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:12:42,946 WARN ]: Verification canceled [2018-06-22 14:12:42,950 WARN ]: Timeout [2018-06-22 14:12:42,950 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:12:42 BoogieIcfgContainer [2018-06-22 14:12:42,950 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:12:42,951 INFO ]: Toolchain (without parser) took 64809.42 ms. Allocated memory was 326.6 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 265.1 MB in the beginning and 821.2 MB in the end (delta: -556.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 14:12:42,952 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:12:42,952 INFO ]: ChcToBoogie took 100.61 ms. Allocated memory is still 326.6 MB. Free memory was 265.1 MB in the beginning and 260.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 3.6 GB. [2018-06-22 14:12:42,952 INFO ]: Boogie Preprocessor took 118.55 ms. Allocated memory is still 326.6 MB. Free memory was 260.5 MB in the beginning and 257.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 3.6 GB. [2018-06-22 14:12:42,953 INFO ]: RCFGBuilder took 636.02 ms. Allocated memory was 326.6 MB in the beginning and 368.1 MB in the end (delta: 41.4 MB). Free memory was 257.4 MB in the beginning and 332.5 MB in the end (delta: -75.1 MB). Peak memory consumption was 84.1 MB. Max. memory is 3.6 GB. [2018-06-22 14:12:42,953 INFO ]: TraceAbstraction took 63944.74 ms. Allocated memory was 368.1 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 332.5 MB in the beginning and 821.2 MB in the end (delta: -488.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 14:12:42,955 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 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 100.61 ms. Allocated memory is still 326.6 MB. Free memory was 265.1 MB in the beginning and 260.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 118.55 ms. Allocated memory is still 326.6 MB. Free memory was 260.5 MB in the beginning and 257.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 636.02 ms. Allocated memory was 326.6 MB in the beginning and 368.1 MB in the end (delta: 41.4 MB). Free memory was 257.4 MB in the beginning and 332.5 MB in the end (delta: -75.1 MB). Peak memory consumption was 84.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 63944.74 ms. Allocated memory was 368.1 MB in the beginning and 1.5 GB in the end (delta: 1.1 GB). Free memory was 332.5 MB in the beginning and 821.2 MB in the end (delta: -488.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 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 22 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 56 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 63.8s OverallTime, 3 OverallIterations, 4 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 9 SDslu, 40 SDs, 0 SdLazy, 24 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 24.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 956 SizeOfPredicates, 276 NumberOfNonLiveVariables, 373 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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/pipeline.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-12-42-976.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/pipeline.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-12-42-976.csv Completed graceful shutdown