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/SYNAPSE_6_e7_938_e2_1012.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 20:22:21,838 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 20:22:21,839 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 20:22:21,851 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 20:22:21,852 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 20:22:21,853 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 20:22:21,854 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 20:22:21,858 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 20:22:21,860 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 20:22:21,861 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 20:22:21,863 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 20:22:21,863 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 20:22:21,864 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 20:22:21,865 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 20:22:21,865 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 20:22:21,866 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 20:22:21,868 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 20:22:21,870 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 20:22:21,872 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 20:22:21,873 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 20:22:21,874 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 20:22:21,876 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 20:22:21,877 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 20:22:21,877 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 20:22:21,878 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 20:22:21,879 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 20:22:21,879 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 20:22:21,880 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 20:22:21,881 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 20:22:21,882 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 20:22:21,882 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 20:22:21,883 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 20:22:21,883 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 20:22:21,884 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 20:22:21,885 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 20:22:21,885 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 20:22:21,898 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 20:22:21,899 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 20:22:21,899 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 20:22:21,899 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 20:22:21,900 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 20:22:21,900 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 20:22:21,901 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 20:22:21,901 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 20:22:21,901 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 20:22:21,901 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 20:22:21,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 20:22:21,902 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 20:22:21,902 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 20:22:21,902 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 20:22:21,902 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 20:22:21,902 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 20:22:21,902 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 20:22:21,903 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 20:22:21,903 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 20:22:21,904 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 20:22:21,904 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 20:22:21,946 INFO ]: Repository-Root is: /tmp [2018-06-22 20:22:21,963 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 20:22:21,970 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 20:22:21,971 INFO ]: Initializing SmtParser... [2018-06-22 20:22:21,972 INFO ]: SmtParser initialized [2018-06-22 20:22:21,972 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_6_e7_938_e2_1012.smt2 [2018-06-22 20:22:21,974 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 20:22:22,072 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_6_e7_938_e2_1012.smt2 unknown [2018-06-22 20:22:22,466 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/SYNAPSE_6_e7_938_e2_1012.smt2 [2018-06-22 20:22:22,473 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 20:22:22,487 INFO ]: Walking toolchain with 4 elements. [2018-06-22 20:22:22,488 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 20:22:22,488 INFO ]: Initializing ChcToBoogie... [2018-06-22 20:22:22,488 INFO ]: ChcToBoogie initialized [2018-06-22 20:22:22,500 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:22:22" (1/1) ... [2018-06-22 20:22:22,573 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:22:22 Unit [2018-06-22 20:22:22,573 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 20:22:22,574 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 20:22:22,574 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 20:22:22,574 INFO ]: Boogie Preprocessor initialized [2018-06-22 20:22:22,597 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:22:22" (1/1) ... [2018-06-22 20:22:22,597 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:22:22" (1/1) ... [2018-06-22 20:22:22,609 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:22:22" (1/1) ... [2018-06-22 20:22:22,609 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:22:22" (1/1) ... [2018-06-22 20:22:22,614 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:22:22" (1/1) ... [2018-06-22 20:22:22,615 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:22:22" (1/1) ... [2018-06-22 20:22:22,617 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:22:22" (1/1) ... [2018-06-22 20:22:22,621 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 20:22:22,621 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 20:22:22,621 INFO ]: Initializing RCFGBuilder... [2018-06-22 20:22:22,621 INFO ]: RCFGBuilder initialized [2018-06-22 20:22:22,622 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:22:22" (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 20:22:22,634 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 20:22:22,634 INFO ]: Found specification of procedure False [2018-06-22 20:22:22,634 INFO ]: Found implementation of procedure False [2018-06-22 20:22:22,634 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 20:22:22,634 INFO ]: Found specification of procedure state [2018-06-22 20:22:22,634 INFO ]: Found implementation of procedure state [2018-06-22 20:22:22,634 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 20:22:22,634 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 20:22:22,634 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 20:22:22,954 INFO ]: Using library mode [2018-06-22 20:22:22,954 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:22:22 BoogieIcfgContainer [2018-06-22 20:22:22,954 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 20:22:22,956 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 20:22:22,956 INFO ]: Initializing TraceAbstraction... [2018-06-22 20:22:22,959 INFO ]: TraceAbstraction initialized [2018-06-22 20:22:22,959 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 08:22:22" (1/3) ... [2018-06-22 20:22:22,960 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225424e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 08:22:22, skipping insertion in model container [2018-06-22 20:22:22,960 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 08:22:22" (2/3) ... [2018-06-22 20:22:22,961 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225424e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 08:22:22, skipping insertion in model container [2018-06-22 20:22:22,961 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 08:22:22" (3/3) ... [2018-06-22 20:22:22,963 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 20:22:22,972 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 20:22:22,981 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 20:22:23,018 INFO ]: Using default assertion order modulation [2018-06-22 20:22:23,018 INFO ]: Interprodecural is true [2018-06-22 20:22:23,018 INFO ]: Hoare is false [2018-06-22 20:22:23,018 INFO ]: Compute interpolants for FPandBP [2018-06-22 20:22:23,018 INFO ]: Backedges is TWOTRACK [2018-06-22 20:22:23,018 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 20:22:23,018 INFO ]: Difference is false [2018-06-22 20:22:23,018 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 20:22:23,018 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 20:22:23,031 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 20:22:23,040 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 20:22:23,040 INFO ]: Found error trace [2018-06-22 20:22:23,041 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:22:23,041 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:22:23,045 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 20:22:23,046 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:22:23,047 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:22:23,087 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:22:23,087 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:22:23,087 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:22:23,180 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:22:23,511 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7 [2018-06-22 20:22:23,515 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 20:22:23,518 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 20:22:23,518 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 20:22:23,520 INFO ]: Interpolant automaton has 4 states [2018-06-22 20:22:23,536 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 20:22:23,537 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:22:23,539 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 20:22:23,647 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:22:23,648 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 20:22:23,648 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 20:22:23,649 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 20:22:23,650 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:22:23,659 INFO ]: With dead ends: 13 [2018-06-22 20:22:23,659 INFO ]: Without dead ends: 13 [2018-06-22 20:22:23,660 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 20:22:23,674 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 20:22:23,694 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 20:22:23,701 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 20:22:23,702 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 20:22:23,703 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 20:22:23,703 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:22:23,703 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 20:22:23,703 INFO ]: Interpolant automaton has 4 states. [2018-06-22 20:22:23,703 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 20:22:23,705 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 20:22:23,705 INFO ]: Found error trace [2018-06-22 20:22:23,705 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:22:23,705 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:22:23,705 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 20:22:23,705 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:22:23,705 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:22:23,712 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:22:23,712 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:22:23,712 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:22:23,826 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:22:24,637 WARN ]: Spent 518.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2018-06-22 20:22:24,744 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:22:24,744 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:22:24,744 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 20:22:24,751 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:22:24,841 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:22:24,855 INFO ]: Computing forward predicates... [2018-06-22 20:22:25,986 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:22:25,991 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:22:26,012 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:22:26,014 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:22:26,024 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:22:29,198 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:22:29,212 WARN ]: expecting exponential blowup for input size 11 [2018-06-22 20:22:30,218 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:22:30,221 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 20:22:30,491 WARN ]: Simplifying disjunction of 11664 conjuctions. This might take some time... [2018-06-22 20:22:45,769 INFO ]: Simplified to disjunction of 11664 conjuctions. [2018-06-22 20:22:45,812 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:22:46,250 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:22:46,299 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:22:46,305 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:22:46,309 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:22:46,320 WARN ]: expecting exponential blowup for input size 9 [2018-06-22 20:22:46,680 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:22:46,683 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:22:46,684 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:22:46,691 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:22:46,695 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 20:22:46,697 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 20:22:46,713 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:22:46,796 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 20:22:46,907 WARN ]: Simplifying disjunction of 5832 conjuctions. This might take some time... [2018-06-22 20:22:50,700 INFO ]: Simplified to disjunction of 5832 conjuctions. [2018-06-22 20:22:50,721 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 20:23:04,771 WARN ]: Spent 282.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2018-06-22 20:23:04,879 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 20:23:04,916 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 20:23:04,916 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 20:23:04,916 INFO ]: Interpolant automaton has 8 states [2018-06-22 20:23:04,917 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 20:23:04,917 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 20:23:04,917 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 20:23:05,233 WARN ]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2018-06-22 20:23:05,621 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 20:23:05,621 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 20:23:05,624 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 20:23:05,624 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 20:23:05,624 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 20:23:05,625 INFO ]: With dead ends: 15 [2018-06-22 20:23:05,625 INFO ]: Without dead ends: 15 [2018-06-22 20:23:05,626 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-06-22 20:23:05,626 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 20:23:05,628 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 20:23:05,628 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 20:23:05,629 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 20:23:05,629 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 20:23:05,629 INFO ]: Finished accepts. word is rejected. [2018-06-22 20:23:05,629 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 20:23:05,629 INFO ]: Interpolant automaton has 8 states. [2018-06-22 20:23:05,629 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 20:23:05,629 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 20:23:05,630 INFO ]: Found error trace [2018-06-22 20:23:05,630 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 20:23:05,630 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 20:23:05,630 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 20:23:05,630 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 20:23:05,630 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 20:23:05,631 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:23:05,631 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 20:23:05,631 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 20:23:05,733 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:23:06,692 WARN ]: Spent 725.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 109 [2018-06-22 20:23:07,252 WARN ]: Spent 497.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 96 [2018-06-22 20:23:07,636 WARN ]: Spent 306.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 66 [2018-06-22 20:23:07,662 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 20:23:07,662 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 20:23:07,662 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 20:23:07,681 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 20:23:07,771 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 20:23:07,771 INFO ]: Conjunction of SSA is unsat [2018-06-22 20:23:07,779 INFO ]: Computing forward predicates... [2018-06-22 20:23:07,928 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 20:23:08,005 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-22 20:23:10,748 INFO ]: Simplified to disjunction of 3888 conjuctions. [2018-06-22 20:23:10,766 WARN ]: expecting exponential blowup for input size 12 [2018-06-22 20:23:11,052 WARN ]: expecting exponential blowup for input size 14 [2018-06-22 20:23:11,102 WARN ]: Simplifying disjunction of 5184 conjuctions. This might take some time... [2018-06-22 20:23:12,585 INFO ]: Simplified to disjunction of 2916 conjuctions. [2018-06-22 20:23:12,616 WARN ]: Simplifying disjunction of 6380 conjuctions. This might take some time... [2018-06-22 20:23:14,495 INFO ]: Simplified to disjunction of 4785 conjuctions. Received shutdown request... [2018-06-22 20:23:26,515 INFO ]: Timeout while computing interpolants [2018-06-22 20:23:26,715 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 20:23:26,716 WARN ]: Verification canceled [2018-06-22 20:23:26,719 WARN ]: Timeout [2018-06-22 20:23:26,719 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 08:23:26 BoogieIcfgContainer [2018-06-22 20:23:26,719 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 20:23:26,720 INFO ]: Toolchain (without parser) took 64246.30 ms. Allocated memory was 301.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 248.0 MB in the beginning and 1.2 GB in the end (delta: -991.0 MB). Peak memory consumption was 172.4 MB. Max. memory is 3.6 GB. [2018-06-22 20:23:26,721 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 301.5 MB. Free memory is still 267.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 20:23:26,722 INFO ]: ChcToBoogie took 85.69 ms. Allocated memory is still 301.5 MB. Free memory was 248.0 MB in the beginning and 246.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:23:26,722 INFO ]: Boogie Preprocessor took 46.84 ms. Allocated memory is still 301.5 MB. Free memory was 246.0 MB in the beginning and 244.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:23:26,723 INFO ]: RCFGBuilder took 332.92 ms. Allocated memory is still 301.5 MB. Free memory was 244.0 MB in the beginning and 227.0 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 3.6 GB. [2018-06-22 20:23:26,723 INFO ]: TraceAbstraction took 63763.51 ms. Allocated memory was 301.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 227.0 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 151.4 MB. Max. memory is 3.6 GB. [2018-06-22 20:23:26,726 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 301.5 MB. Free memory is still 267.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 85.69 ms. Allocated memory is still 301.5 MB. Free memory was 248.0 MB in the beginning and 246.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 46.84 ms. Allocated memory is still 301.5 MB. Free memory was 246.0 MB in the beginning and 244.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 332.92 ms. Allocated memory is still 301.5 MB. Free memory was 244.0 MB in the beginning and 227.0 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 63763.51 ms. Allocated memory was 301.5 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 227.0 MB in the beginning and 1.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 151.4 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 analyzing trace of length 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 8 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 63.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 6 SDslu, 53 SDs, 0 SdLazy, 37 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 0.2s SatisfiabilityAnalysisTime, 41.2s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2128 SizeOfPredicates, 31 NumberOfNonLiveVariables, 330 ConjunctsInSsa, 39 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/SYNAPSE_6_e7_938_e2_1012.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_20-23-26-739.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/SYNAPSE_6_e7_938_e2_1012.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_20-23-26-739.csv Completed graceful shutdown