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/lustre/traffic.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:45:14,938 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:45:14,941 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:45:14,954 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:45:14,954 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:45:14,955 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:45:14,958 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:45:14,960 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:45:14,962 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:45:14,963 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:45:14,964 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:45:14,965 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:45:14,966 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:45:14,967 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:45:14,967 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:45:14,971 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:45:14,973 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:45:14,986 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:45:14,987 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:45:14,988 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:45:14,989 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:45:14,991 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:45:14,992 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:45:14,992 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:45:14,993 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:45:14,993 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:45:14,999 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:45:15,000 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:45:15,001 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:45:15,001 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:45:15,002 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:45:15,002 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:45:15,003 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:45:15,003 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:45:15,007 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:45:15,007 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 20:45:15,030 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:45:15,030 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:45:15,030 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:45:15,031 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:45:15,032 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:45:15,032 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:45:15,032 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:45:15,032 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:45:15,033 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:45:15,033 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:45:15,034 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:45:15,034 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:45:15,034 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:45:15,034 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:45:15,034 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:45:15,035 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:45:15,035 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:45:15,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:45:15,035 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:45:15,037 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:45:15,037 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:45:15,089 INFO ]: Repository-Root is: /tmp [2018-06-22 20:45:15,105 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:45:15,111 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:45:15,112 INFO ]: Initializing SmtParser... [2018-06-22 20:45:15,113 INFO ]: SmtParser initialized [2018-06-22 20:45:15,113 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/traffic.smt2 [2018-06-22 20:45:15,115 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 20:45:15,199 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/traffic.smt2 unknown [2018-06-22 20:45:15,434 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/traffic.smt2 [2018-06-22 20:45:15,439 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:45:15,445 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:45:15,445 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:45:15,445 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:45:15,445 INFO ]: ChcToBoogie initialized [2018-06-22 20:45:15,451 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:45:15" (1/1) ... [2018-06-22 20:45:15,493 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:15 Unit [2018-06-22 20:45:15,494 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:45:15,494 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:45:15,494 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:45:15,494 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:45:15,516 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:15" (1/1) ... [2018-06-22 20:45:15,516 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:15" (1/1) ... [2018-06-22 20:45:15,524 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:15" (1/1) ... [2018-06-22 20:45:15,524 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:15" (1/1) ... [2018-06-22 20:45:15,527 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:15" (1/1) ... [2018-06-22 20:45:15,529 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:15" (1/1) ... [2018-06-22 20:45:15,530 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:15" (1/1) ... [2018-06-22 20:45:15,537 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:45:15,537 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:45:15,537 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:45:15,537 INFO ]: RCFGBuilder initialized [2018-06-22 20:45:15,538 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:15" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:45:15,557 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:45:15,557 INFO ]: Found specification of procedure False [2018-06-22 20:45:15,557 INFO ]: Found implementation of procedure False [2018-06-22 20:45:15,557 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:45:15,557 INFO ]: Found specification of procedure state [2018-06-22 20:45:15,557 INFO ]: Found implementation of procedure state [2018-06-22 20:45:15,557 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:45:15,557 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:45:15,557 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 20:45:15,716 INFO ]: Using library mode [2018-06-22 20:45:15,716 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:45:15 BoogieIcfgContainer [2018-06-22 20:45:15,716 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:45:15,718 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:45:15,718 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:45:15,721 INFO ]: TraceAbstraction initialized [2018-06-22 20:45:15,721 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:45:15" (1/3) ... [2018-06-22 20:45:15,722 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c780be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:45:15, skipping insertion in model container [2018-06-22 20:45:15,722 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:45:15" (2/3) ... [2018-06-22 20:45:15,731 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c780be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:45:15, skipping insertion in model container [2018-06-22 20:45:15,731 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:45:15" (3/3) ... [2018-06-22 20:45:15,733 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:45:15,751 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:45:15,761 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:45:15,803 INFO ]: Using default assertion order modulation [2018-06-22 20:45:15,804 INFO ]: Interprodecural is true [2018-06-22 20:45:15,804 INFO ]: Hoare is false [2018-06-22 20:45:15,804 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:45:15,804 INFO ]: Backedges is TWOTRACK [2018-06-22 20:45:15,804 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:45:15,804 INFO ]: Difference is false [2018-06-22 20:45:15,804 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:45:15,804 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:45:15,818 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:45:15,828 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:45:15,828 INFO ]: Found error trace [2018-06-22 20:45:15,829 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:45:15,830 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:45:15,840 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 20:45:15,842 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:45:15,843 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:45:15,882 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:15,882 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:45:15,882 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:15,932 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:16,182 WARN ]: Spent 127.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 8 [2018-06-22 20:45:16,184 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:45:16,186 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:45:16,186 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:45:16,187 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:45:16,197 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:45:16,197 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:45:16,199 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:45:16,274 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:45:16,275 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:45:16,275 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:45:16,276 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:45:16,276 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:45:16,286 INFO ]: With dead ends: 13 [2018-06-22 20:45:16,286 INFO ]: Without dead ends: 13 [2018-06-22 20:45:16,287 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 20:45:16,305 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:45:16,325 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:45:16,327 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:45:16,327 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:45:16,328 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:45:16,329 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:45:16,329 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:45:16,329 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:45:16,329 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:45:16,330 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:45:16,330 INFO ]: Found error trace [2018-06-22 20:45:16,330 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:45:16,330 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:45:16,330 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 20:45:16,330 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:45:16,330 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:45:16,331 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:16,332 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:45:16,332 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:16,423 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:17,425 WARN ]: Spent 780.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 42 [2018-06-22 20:45:17,634 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 24 [2018-06-22 20:45:17,761 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:45:17,761 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:45:17,761 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 20:45:17,787 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:45:17,829 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:17,839 INFO ]: Computing forward predicates... [2018-06-22 20:45:20,133 WARN ]: Spent 900.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 22 [2018-06-22 20:45:20,408 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:45:20,442 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:45:20,443 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 20:45:20,443 INFO ]: Interpolant automaton has 8 states [2018-06-22 20:45:20,443 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 20:45:20,443 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 20:45:20,444 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 20:45:20,717 WARN ]: Spent 158.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-06-22 20:45:20,875 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:45:20,875 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:45:20,876 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 20:45:20,876 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 20:45:20,876 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:45:20,876 INFO ]: With dead ends: 15 [2018-06-22 20:45:20,876 INFO ]: Without dead ends: 15 [2018-06-22 20:45:20,877 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-06-22 20:45:20,877 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 20:45:20,880 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 20:45:20,880 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 20:45:20,880 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 20:45:20,880 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 20:45:20,880 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:45:20,880 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 20:45:20,880 INFO ]: Interpolant automaton has 8 states. [2018-06-22 20:45:20,880 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 20:45:20,881 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 20:45:20,881 INFO ]: Found error trace [2018-06-22 20:45:20,881 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:45:20,881 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:45:20,881 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 20:45:20,881 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:45:20,881 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:45:20,882 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:20,882 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:45:20,882 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:20,945 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:21,611 WARN ]: Spent 412.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 74 [2018-06-22 20:45:21,932 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:45:21,932 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:45:21,932 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 20:45:21,948 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 20:45:21,981 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 20:45:21,981 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:21,984 INFO ]: Computing forward predicates... [2018-06-22 20:45:23,654 WARN ]: Spent 836.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 28 [2018-06-22 20:45:28,008 WARN ]: Spent 3.33 s on a formula simplification. DAG size of input: 315 DAG size of output: 68 [2018-06-22 20:45:28,534 WARN ]: Spent 220.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 34 [2018-06-22 20:45:28,569 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:45:28,593 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:45:28,594 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 20:45:28,594 INFO ]: Interpolant automaton has 12 states [2018-06-22 20:45:28,594 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 20:45:28,594 INFO ]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-06-22 20:45:28,594 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 20:45:29,828 WARN ]: Spent 1.18 s on a formula simplification. DAG size of input: 171 DAG size of output: 123 [2018-06-22 20:45:29,965 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 36 [2018-06-22 20:45:30,553 WARN ]: Spent 544.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 79 [2018-06-22 20:45:31,529 WARN ]: Spent 934.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 102 [2018-06-22 20:45:31,571 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:45:31,571 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 20:45:31,574 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 20:45:31,574 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 20:45:31,574 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:45:31,575 INFO ]: With dead ends: 17 [2018-06-22 20:45:31,575 INFO ]: Without dead ends: 17 [2018-06-22 20:45:31,575 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2018-06-22 20:45:31,576 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 20:45:31,578 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 20:45:31,578 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 20:45:31,579 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 20:45:31,580 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 20:45:31,581 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:45:31,581 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 20:45:31,581 INFO ]: Interpolant automaton has 12 states. [2018-06-22 20:45:31,581 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 20:45:31,581 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 20:45:31,581 INFO ]: Found error trace [2018-06-22 20:45:31,581 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:45:31,582 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:45:31,582 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 20:45:31,582 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:45:31,582 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:45:31,582 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:31,582 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 20:45:31,582 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:45:31,660 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:32,898 WARN ]: Spent 860.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 71 [2018-06-22 20:45:33,301 WARN ]: Spent 311.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 41 [2018-06-22 20:45:33,525 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 39 [2018-06-22 20:45:34,013 WARN ]: Spent 371.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 50 [2018-06-22 20:45:34,037 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 20:45:34,037 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:45:34,037 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 20:45:34,044 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 20:45:34,122 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 20:45:34,122 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:45:34,127 INFO ]: Computing forward predicates... [2018-06-22 20:45:34,406 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:34,628 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:34,811 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:34,847 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:34,877 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:34,917 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:35,015 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:35,042 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:35,149 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:35,398 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:35,694 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:35,946 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:35,996 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:36,346 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:36,656 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:36,886 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:37,171 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:37,376 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:37,504 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:37,609 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:45:37,632 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:37,777 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:37,908 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,025 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,197 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,323 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,488 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,608 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,736 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:38,896 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:39,016 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:39,146 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:39,272 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:45:46,685 WARN ]: Spent 1.47 s on a formula simplification. DAG size of input: 345 DAG size of output: 10 [2018-06-22 20:45:46,865 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:46:14,902 WARN ]: Spent 25.46 s on a formula simplification. DAG size of input: 1222 DAG size of output: 43 [2018-06-22 20:46:15,713 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 20:46:15,732 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:46:15,733 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-06-22 20:46:15,733 INFO ]: Interpolant automaton has 16 states [2018-06-22 20:46:15,733 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 20:46:15,733 INFO ]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2018-06-22 20:46:15,733 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 16 states. [2018-06-22 20:46:16,106 WARN ]: Spent 331.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 128 [2018-06-22 20:46:16,410 WARN ]: Spent 282.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 56 Received shutdown request... [2018-06-22 20:46:16,782 WARN ]: Removed 2 from assertion stack [2018-06-22 20:46:16,782 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 20:46:16,782 WARN ]: Verification canceled [2018-06-22 20:46:16,786 WARN ]: Timeout [2018-06-22 20:46:16,786 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:46:16 BoogieIcfgContainer [2018-06-22 20:46:16,786 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 20:46:16,787 INFO ]: Toolchain (without parser) took 61347.52 ms. Allocated memory was 296.2 MB in the beginning and 1.3 GB in the end (delta: 957.3 MB). Free memory was 250.6 MB in the beginning and 224.0 MB in the end (delta: 26.6 MB). Peak memory consumption was 984.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:46:16,788 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 296.2 MB. Free memory is still 260.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 20:46:16,788 INFO ]: ChcToBoogie took 48.92 ms. Allocated memory is still 296.2 MB. Free memory was 250.6 MB in the beginning and 248.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:46:16,789 INFO ]: Boogie Preprocessor took 42.49 ms. Allocated memory is still 296.2 MB. Free memory was 248.6 MB in the beginning and 246.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:46:16,789 INFO ]: RCFGBuilder took 179.12 ms. Allocated memory is still 296.2 MB. Free memory was 246.6 MB in the beginning and 238.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:46:16,790 INFO ]: TraceAbstraction took 61068.55 ms. Allocated memory was 296.2 MB in the beginning and 1.3 GB in the end (delta: 957.3 MB). Free memory was 238.6 MB in the beginning and 224.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 972.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:46:16,793 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 296.2 MB. Free memory is still 260.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 48.92 ms. Allocated memory is still 296.2 MB. Free memory was 250.6 MB in the beginning and 248.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 42.49 ms. Allocated memory is still 296.2 MB. Free memory was 248.6 MB in the beginning and 246.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 179.12 ms. Allocated memory is still 296.2 MB. Free memory was 246.6 MB in the beginning and 238.6 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 61068.55 ms. Allocated memory was 296.2 MB in the beginning and 1.3 GB in the end (delta: 957.3 MB). Free memory was 238.6 MB in the beginning and 224.0 MB in the end (delta: 14.6 MB). Peak memory consumption was 972.0 MB. 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 constructing difference of abstraction (17states) and interpolant automaton (currently 5 states, 16 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 184. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 60.9s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 4.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 23 SDslu, 136 SDs, 0 SdLazy, 118 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 41.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 55.7s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 63104 SizeOfPredicates, 90 NumberOfNonLiveVariables, 423 ConjunctsInSsa, 191 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 20/68 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/traffic.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_20-46-16-805.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/traffic.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_20-46-16-805.csv Completed graceful shutdown