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/s3_srvr_13.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:17:16,973 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:17:16,976 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:17:16,988 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:17:16,989 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:17:16,989 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:17:16,990 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:17:16,994 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:17:16,995 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:17:16,996 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:17:16,997 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:17:16,998 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:17:16,999 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:17:17,000 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:17:17,003 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:17:17,004 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:17:17,017 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:17:17,019 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:17:17,020 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:17:17,022 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:17:17,023 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:17:17,025 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:17:17,025 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:17:17,026 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:17:17,030 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:17:17,031 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:17:17,032 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:17:17,032 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:17:17,035 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:17:17,035 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:17:17,036 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:17:17,036 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:17:17,037 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:17:17,037 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:17:17,043 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:17:17,044 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 14:17:17,066 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:17:17,067 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:17:17,067 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:17:17,067 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:17:17,068 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:17:17,068 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:17:17,069 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:17:17,069 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:17:17,069 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:17:17,069 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:17:17,070 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:17:17,070 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:17:17,070 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:17:17,071 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:17:17,071 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:17:17,071 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:17:17,071 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:17:17,071 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:17:17,072 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:17:17,073 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:17:17,073 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:17:17,113 INFO ]: Repository-Root is: /tmp [2018-06-22 14:17:17,130 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:17:17,133 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:17:17,135 INFO ]: Initializing SmtParser... [2018-06-22 14:17:17,135 INFO ]: SmtParser initialized [2018-06-22 14:17:17,136 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_13.cil.smt2 [2018-06-22 14:17:17,137 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 14:17:17,223 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_13.cil.smt2 unknown [2018-06-22 14:17:17,705 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_13.cil.smt2 [2018-06-22 14:17:17,709 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:17:17,716 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:17:17,716 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:17:17,716 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:17:17,717 INFO ]: ChcToBoogie initialized [2018-06-22 14:17:17,720 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:17:17" (1/1) ... [2018-06-22 14:17:17,787 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:17:17 Unit [2018-06-22 14:17:17,788 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:17:17,788 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:17:17,788 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:17:17,788 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:17:17,811 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:17:17" (1/1) ... [2018-06-22 14:17:17,812 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:17:17" (1/1) ... [2018-06-22 14:17:17,838 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:17:17" (1/1) ... [2018-06-22 14:17:17,838 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:17:17" (1/1) ... [2018-06-22 14:17:17,861 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:17:17" (1/1) ... [2018-06-22 14:17:17,862 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:17:17" (1/1) ... [2018-06-22 14:17:17,875 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:17:17" (1/1) ... [2018-06-22 14:17:17,880 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:17:17,881 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:17:17,881 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:17:17,881 INFO ]: RCFGBuilder initialized [2018-06-22 14:17:17,882 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:17:17" (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 14:17:17,899 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:17:17,899 INFO ]: Found specification of procedure False [2018-06-22 14:17:17,899 INFO ]: Found implementation of procedure False [2018-06-22 14:17:17,899 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:17:17,899 INFO ]: Found specification of procedure state [2018-06-22 14:17:17,899 INFO ]: Found implementation of procedure state [2018-06-22 14:17:17,899 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:17:17,899 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:17:17,899 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 14:17:18,294 INFO ]: Using library mode [2018-06-22 14:17:18,294 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:17:18 BoogieIcfgContainer [2018-06-22 14:17:18,294 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:17:18,296 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:17:18,296 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:17:18,302 INFO ]: TraceAbstraction initialized [2018-06-22 14:17:18,302 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:17:17" (1/3) ... [2018-06-22 14:17:18,303 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1d9668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:17:18, skipping insertion in model container [2018-06-22 14:17:18,303 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:17:17" (2/3) ... [2018-06-22 14:17:18,304 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1d9668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:17:18, skipping insertion in model container [2018-06-22 14:17:18,304 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:17:18" (3/3) ... [2018-06-22 14:17:18,306 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:17:18,317 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:17:18,328 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:17:18,376 INFO ]: Using default assertion order modulation [2018-06-22 14:17:18,377 INFO ]: Interprodecural is true [2018-06-22 14:17:18,377 INFO ]: Hoare is false [2018-06-22 14:17:18,377 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:17:18,377 INFO ]: Backedges is TWOTRACK [2018-06-22 14:17:18,377 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:17:18,377 INFO ]: Difference is false [2018-06-22 14:17:18,377 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:17:18,377 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:17:18,391 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:17:18,404 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:17:18,404 INFO ]: Found error trace [2018-06-22 14:17:18,405 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:17:18,405 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:17:18,413 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 14:17:18,415 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:17:18,415 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:17:18,457 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:17:18,457 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:17:18,457 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:17:18,509 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:17:18,672 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:17:18,675 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:17:18,675 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:17:18,676 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:17:18,687 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:17:18,688 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:17:18,690 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:17:18,816 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:17:18,817 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:17:18,817 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:17:18,818 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:17:18,818 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:17:18,829 INFO ]: With dead ends: 13 [2018-06-22 14:17:18,829 INFO ]: Without dead ends: 13 [2018-06-22 14:17:18,830 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 14:17:18,845 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:17:18,872 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:17:18,873 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:17:18,874 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:17:18,875 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:17:18,876 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:17:18,876 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:17:18,876 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:17:18,876 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:17:18,877 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:17:18,877 INFO ]: Found error trace [2018-06-22 14:17:18,877 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:17:18,878 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:17:18,878 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 14:17:18,878 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:17:18,878 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:17:18,879 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:17:18,879 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:17:18,879 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:17:19,086 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:17:19,472 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:17:19,472 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:17:19,472 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 14:17:19,480 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:17:19,598 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:17:19,611 INFO ]: Computing forward predicates... [2018-06-22 14:17:20,393 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:17:20,414 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:17:20,415 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 14:17:20,415 INFO ]: Interpolant automaton has 10 states [2018-06-22 14:17:20,415 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 14:17:20,415 INFO ]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:17:20,415 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2018-06-22 14:17:20,678 WARN ]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 14:17:21,239 WARN ]: Spent 197.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-06-22 14:17:21,292 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:17:21,293 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:17:21,294 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:17:21,294 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 14:17:21,294 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:17:21,295 INFO ]: With dead ends: 15 [2018-06-22 14:17:21,295 INFO ]: Without dead ends: 15 [2018-06-22 14:17:21,296 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:17:21,296 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:17:21,298 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:17:21,298 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:17:21,299 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:17:21,299 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:17:21,300 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:17:21,300 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:17:21,300 INFO ]: Interpolant automaton has 10 states. [2018-06-22 14:17:21,301 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:17:21,301 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:17:21,301 INFO ]: Found error trace [2018-06-22 14:17:21,301 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:17:21,301 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:17:21,301 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 14:17:21,301 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:17:21,301 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:17:21,302 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:17:21,302 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:17:21,302 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:17:21,393 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:17:21,654 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:17:21,654 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:17:21,654 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 14:17:21,660 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:17:21,761 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:17:21,761 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:17:21,770 INFO ]: Computing forward predicates... [2018-06-22 14:17:22,437 WARN ]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 14:17:22,888 WARN ]: Spent 122.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-06-22 14:17:23,070 INFO ]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:17:23,098 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:17:23,098 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 14:17:23,098 INFO ]: Interpolant automaton has 14 states [2018-06-22 14:17:23,098 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 14:17:23,099 INFO ]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-06-22 14:17:23,099 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 14 states. [2018-06-22 14:17:23,341 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:17:23,341 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:17:23,342 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:17:23,342 INFO ]: Start accepts. Automaton has 14 states. Word has length 17 [2018-06-22 14:17:23,342 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:17:23,342 INFO ]: With dead ends: 17 [2018-06-22 14:17:23,342 INFO ]: Without dead ends: 17 [2018-06-22 14:17:23,343 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2018-06-22 14:17:23,343 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:17:23,346 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:17:23,346 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:17:23,346 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:17:23,346 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 14:17:23,347 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:17:23,347 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:17:23,347 INFO ]: Interpolant automaton has 14 states. [2018-06-22 14:17:23,347 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:17:23,347 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:17:23,347 INFO ]: Found error trace [2018-06-22 14:17:23,347 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:17:23,347 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:17:23,348 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 14:17:23,348 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:17:23,348 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:17:23,348 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:17:23,348 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:17:23,349 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:17:23,447 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:17:23,950 WARN ]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 14:17:24,206 WARN ]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-06-22 14:17:24,300 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:17:24,300 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:17:24,300 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 14:17:24,307 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:17:24,436 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 14:17:24,436 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:17:24,446 INFO ]: Computing forward predicates... [2018-06-22 14:17:30,716 WARN ]: Spent 5.23 s on a formula simplification. DAG size of input: 229 DAG size of output: 123 [2018-06-22 14:17:31,519 WARN ]: Spent 241.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 30 [2018-06-22 14:17:32,010 WARN ]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 14:17:32,379 INFO ]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:17:32,413 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:17:32,413 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-06-22 14:17:32,413 INFO ]: Interpolant automaton has 18 states [2018-06-22 14:17:32,413 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 14:17:32,414 INFO ]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-06-22 14:17:32,414 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 18 states. [2018-06-22 14:17:34,036 WARN ]: Spent 1.34 s on a formula simplification. DAG size of input: 135 DAG size of output: 126 [2018-06-22 14:17:34,489 WARN ]: Spent 416.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 85 [2018-06-22 14:17:34,946 WARN ]: Spent 405.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 87 [2018-06-22 14:17:35,482 WARN ]: Spent 477.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 124 [2018-06-22 14:17:35,513 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:17:35,514 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 14:17:35,514 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:17:35,514 INFO ]: Start accepts. Automaton has 18 states. Word has length 21 [2018-06-22 14:17:35,514 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:17:35,515 INFO ]: With dead ends: 19 [2018-06-22 14:17:35,515 INFO ]: Without dead ends: 19 [2018-06-22 14:17:35,515 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2018-06-22 14:17:35,515 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 14:17:35,517 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 14:17:35,517 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 14:17:35,517 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 14:17:35,518 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 14:17:35,518 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:17:35,518 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 14:17:35,518 INFO ]: Interpolant automaton has 18 states. [2018-06-22 14:17:35,518 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 14:17:35,519 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 14:17:35,519 INFO ]: Found error trace [2018-06-22 14:17:35,519 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:17:35,519 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:17:35,519 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 4 times [2018-06-22 14:17:35,519 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:17:35,519 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:17:35,520 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:17:35,520 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:17:35,520 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:17:35,648 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:17:36,212 WARN ]: Spent 197.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-06-22 14:17:36,657 WARN ]: Spent 209.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 5 [2018-06-22 14:17:36,696 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:17:36,696 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:17:36,696 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:17:36,701 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 14:17:36,816 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 14:17:36,816 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:17:36,834 INFO ]: Computing forward predicates... [2018-06-22 14:17:37,663 WARN ]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 14:17:38,299 WARN ]: Spent 150.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2018-06-22 14:17:43,264 WARN ]: Spent 4.35 s on a formula simplification. DAG size of input: 324 DAG size of output: 177 [2018-06-22 14:17:44,160 WARN ]: Spent 327.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 41 [2018-06-22 14:17:44,317 INFO ]: Checked inductivity of 36 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:17:44,338 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:17:44,338 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-06-22 14:17:44,338 INFO ]: Interpolant automaton has 21 states [2018-06-22 14:17:44,338 INFO ]: Constructing interpolant automaton starting with 21 interpolants. [2018-06-22 14:17:44,338 INFO ]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2018-06-22 14:17:44,338 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 21 states. [2018-06-22 14:17:45,800 WARN ]: Spent 1.42 s on a formula simplification. DAG size of input: 207 DAG size of output: 205 [2018-06-22 14:17:46,468 WARN ]: Spent 616.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 118 [2018-06-22 14:17:47,304 WARN ]: Spent 788.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 135 [2018-06-22 14:17:48,651 WARN ]: Spent 1.30 s on a formula simplification. DAG size of input: 207 DAG size of output: 184 [2018-06-22 14:17:50,010 WARN ]: Spent 1.30 s on a formula simplification. DAG size of input: 207 DAG size of output: 201 [2018-06-22 14:17:50,052 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:17:50,052 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:17:50,053 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:17:50,053 INFO ]: Start accepts. Automaton has 21 states. Word has length 25 [2018-06-22 14:17:50,053 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:17:50,053 INFO ]: With dead ends: 21 [2018-06-22 14:17:50,053 INFO ]: Without dead ends: 21 [2018-06-22 14:17:50,054 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2018-06-22 14:17:50,054 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:17:50,058 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:17:50,058 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:17:50,058 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:17:50,058 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 14:17:50,058 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:17:50,058 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:17:50,059 INFO ]: Interpolant automaton has 21 states. [2018-06-22 14:17:50,059 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:17:50,059 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:17:50,059 INFO ]: Found error trace [2018-06-22 14:17:50,059 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:17:50,059 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:17:50,060 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 5 times [2018-06-22 14:17:50,060 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:17:50,060 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:17:50,060 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:17:50,060 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:17:50,060 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:17:50,287 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:17:50,775 WARN ]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:17:50,980 WARN ]: Spent 130.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2018-06-22 14:17:51,224 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:17:51,224 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:17:51,224 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:17:51,236 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 14:17:51,466 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 14:17:51,466 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:17:51,486 INFO ]: Computing forward predicates... [2018-06-22 14:17:52,625 WARN ]: Spent 479.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 10 [2018-06-22 14:17:56,906 WARN ]: Spent 3.74 s on a formula simplification. DAG size of input: 349 DAG size of output: 154 [2018-06-22 14:18:05,636 WARN ]: Spent 7.79 s on a formula simplification. DAG size of input: 486 DAG size of output: 205 [2018-06-22 14:18:15,606 WARN ]: Spent 8.72 s on a formula simplification. DAG size of input: 494 DAG size of output: 212 [2018-06-22 14:18:16,159 WARN ]: Spent 276.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 44 [2018-06-22 14:18:16,382 INFO ]: Checked inductivity of 55 backedges. 7 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:18:16,403 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:18:16,403 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2018-06-22 14:18:16,403 INFO ]: Interpolant automaton has 26 states [2018-06-22 14:18:16,403 INFO ]: Constructing interpolant automaton starting with 26 interpolants. [2018-06-22 14:18:16,403 INFO ]: CoverageRelationStatistics Valid=127, Invalid=523, Unknown=0, NotChecked=0, Total=650 [2018-06-22 14:18:16,404 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 26 states. [2018-06-22 14:18:16,938 WARN ]: Spent 432.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 43 [2018-06-22 14:18:17,475 WARN ]: Spent 483.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 43 Received shutdown request... [2018-06-22 14:18:17,570 WARN ]: Removed 2 from assertion stack [2018-06-22 14:18:17,570 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:18:17,570 WARN ]: Verification canceled [2018-06-22 14:18:17,573 WARN ]: Timeout [2018-06-22 14:18:17,574 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:18:17 BoogieIcfgContainer [2018-06-22 14:18:17,574 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:18:17,574 INFO ]: Toolchain (without parser) took 59864.65 ms. Allocated memory was 304.6 MB in the beginning and 1.1 GB in the end (delta: 813.7 MB). Free memory was 238.1 MB in the beginning and 626.3 MB in the end (delta: -388.2 MB). Peak memory consumption was 425.5 MB. Max. memory is 3.6 GB. [2018-06-22 14:18:17,575 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:18:17,575 INFO ]: ChcToBoogie took 71.56 ms. Allocated memory is still 304.6 MB. Free memory was 238.1 MB in the beginning and 235.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:18:17,576 INFO ]: Boogie Preprocessor took 91.98 ms. Allocated memory is still 304.6 MB. Free memory was 235.1 MB in the beginning and 233.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:18:17,576 INFO ]: RCFGBuilder took 413.55 ms. Allocated memory is still 304.6 MB. Free memory was 233.1 MB in the beginning and 206.1 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:18:17,576 INFO ]: TraceAbstraction took 59277.72 ms. Allocated memory was 304.6 MB in the beginning and 1.1 GB in the end (delta: 813.7 MB). Free memory was 206.1 MB in the beginning and 626.3 MB in the end (delta: -420.2 MB). Peak memory consumption was 393.5 MB. Max. memory is 3.6 GB. [2018-06-22 14:18:17,580 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 304.6 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 71.56 ms. Allocated memory is still 304.6 MB. Free memory was 238.1 MB in the beginning and 235.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 91.98 ms. Allocated memory is still 304.6 MB. Free memory was 235.1 MB in the beginning and 233.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 413.55 ms. Allocated memory is still 304.6 MB. Free memory was 233.1 MB in the beginning and 206.1 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 59277.72 ms. Allocated memory was 304.6 MB in the beginning and 1.1 GB in the end (delta: 813.7 MB). Free memory was 206.1 MB in the beginning and 626.3 MB in the end (delta: -420.2 MB). Peak memory consumption was 393.5 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 (21states) and interpolant automaton (currently 7 states, 26 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 216. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 59.2s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 11.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 65 SDtfs, 72 SDslu, 248 SDs, 0 SdLazy, 208 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 50.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=5, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 46.0s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 186432 SizeOfPredicates, 2042 NumberOfNonLiveVariables, 1905 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 84/250 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/s3_srvr_13.cil.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-18-17-594.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_13.cil.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-18-17-594.csv Completed graceful shutdown