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_12.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:16:15,034 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:16:15,036 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:16:15,049 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:16:15,050 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:16:15,051 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:16:15,054 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:16:15,056 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:16:15,057 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:16:15,058 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:16:15,059 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:16:15,059 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:16:15,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:16:15,061 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:16:15,061 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:16:15,062 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:16:15,064 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:16:15,066 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:16:15,067 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:16:15,068 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:16:15,069 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:16:15,072 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:16:15,072 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:16:15,072 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:16:15,073 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:16:15,074 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:16:15,075 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:16:15,075 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:16:15,077 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:16:15,077 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:16:15,077 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:16:15,078 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:16:15,078 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:16:15,079 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:16:15,080 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:16:15,080 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 14:16:15,093 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:16:15,093 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:16:15,094 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:16:15,094 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:16:15,095 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:16:15,095 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:16:15,095 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:16:15,095 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:16:15,096 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:16:15,096 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:16:15,096 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:16:15,096 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:16:15,096 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:16:15,097 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:16:15,097 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:16:15,097 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:16:15,097 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:16:15,097 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:16:15,098 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:16:15,099 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:16:15,099 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:16:15,146 INFO ]: Repository-Root is: /tmp [2018-06-22 14:16:15,162 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:16:15,166 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:16:15,169 INFO ]: Initializing SmtParser... [2018-06-22 14:16:15,169 INFO ]: SmtParser initialized [2018-06-22 14:16:15,169 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_12.cil.smt2 [2018-06-22 14:16:15,171 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 14:16:15,263 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_12.cil.smt2 unknown [2018-06-22 14:16:15,752 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_12.cil.smt2 [2018-06-22 14:16:15,756 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:16:15,763 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:16:15,764 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:16:15,764 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:16:15,764 INFO ]: ChcToBoogie initialized [2018-06-22 14:16:15,767 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:16:15" (1/1) ... [2018-06-22 14:16:15,850 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:16:15 Unit [2018-06-22 14:16:15,850 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:16:15,850 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:16:15,850 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:16:15,851 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:16:15,873 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:16:15" (1/1) ... [2018-06-22 14:16:15,873 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:16:15" (1/1) ... [2018-06-22 14:16:15,897 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:16:15" (1/1) ... [2018-06-22 14:16:15,897 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:16:15" (1/1) ... [2018-06-22 14:16:15,917 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:16:15" (1/1) ... [2018-06-22 14:16:15,918 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:16:15" (1/1) ... [2018-06-22 14:16:15,922 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:16:15" (1/1) ... [2018-06-22 14:16:15,935 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:16:15,936 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:16:15,936 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:16:15,936 INFO ]: RCFGBuilder initialized [2018-06-22 14:16:15,937 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:16:15" (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) [2018-06-22 14:16:15,958 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:16:15,958 INFO ]: Found specification of procedure False [2018-06-22 14:16:15,958 INFO ]: Found implementation of procedure False [2018-06-22 14:16:15,958 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:16:15,958 INFO ]: Found specification of procedure state [2018-06-22 14:16:15,958 INFO ]: Found implementation of procedure state [2018-06-22 14:16:15,959 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:16:15,959 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:16:15,959 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 14:16:16,411 INFO ]: Using library mode [2018-06-22 14:16:16,412 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:16:16 BoogieIcfgContainer [2018-06-22 14:16:16,412 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:16:16,415 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:16:16,415 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:16:16,422 INFO ]: TraceAbstraction initialized [2018-06-22 14:16:16,422 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:16:15" (1/3) ... [2018-06-22 14:16:16,423 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9283dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:16:16, skipping insertion in model container [2018-06-22 14:16:16,423 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:16:15" (2/3) ... [2018-06-22 14:16:16,424 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9283dd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:16:16, skipping insertion in model container [2018-06-22 14:16:16,424 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:16:16" (3/3) ... [2018-06-22 14:16:16,426 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:16:16,435 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:16:16,446 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:16:16,494 INFO ]: Using default assertion order modulation [2018-06-22 14:16:16,494 INFO ]: Interprodecural is true [2018-06-22 14:16:16,494 INFO ]: Hoare is false [2018-06-22 14:16:16,494 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:16:16,494 INFO ]: Backedges is TWOTRACK [2018-06-22 14:16:16,494 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:16:16,494 INFO ]: Difference is false [2018-06-22 14:16:16,494 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:16:16,495 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:16:16,507 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:16:16,519 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:16:16,519 INFO ]: Found error trace [2018-06-22 14:16:16,520 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:16:16,520 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:16:16,528 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 14:16:16,530 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:16:16,530 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:16:16,571 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:16:16,571 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:16:16,571 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:16:16,614 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:16:16,766 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:16:16,768 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:16:16,768 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:16:16,769 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:16:16,780 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:16:16,781 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:16:16,782 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:16:16,924 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:16:16,924 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:16:16,947 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:16:16,950 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:16:16,951 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:16:16,969 INFO ]: With dead ends: 13 [2018-06-22 14:16:16,969 INFO ]: Without dead ends: 13 [2018-06-22 14:16:16,971 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:16:16,997 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:16:17,027 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:16:17,028 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:16:17,029 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:16:17,037 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:16:17,037 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:16:17,037 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:16:17,037 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:16:17,037 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:16:17,039 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:16:17,039 INFO ]: Found error trace [2018-06-22 14:16:17,039 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:16:17,039 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:16:17,040 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 14:16:17,040 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:16:17,040 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:16:17,041 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:16:17,041 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:16:17,041 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:16:17,213 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:16:17,706 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:16:17,706 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:16:17,706 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 14:16:17,715 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:16:17,816 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:16:17,829 INFO ]: Computing forward predicates... [2018-06-22 14:16:18,815 WARN ]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 14:16:19,276 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:16:19,310 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:16:19,310 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 14:16:19,311 INFO ]: Interpolant automaton has 10 states [2018-06-22 14:16:19,311 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 14:16:19,311 INFO ]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:16:19,311 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2018-06-22 14:16:19,665 WARN ]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-06-22 14:16:19,928 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:16:19,928 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:16:19,929 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:16:19,929 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 14:16:19,929 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:16:19,930 INFO ]: With dead ends: 15 [2018-06-22 14:16:19,930 INFO ]: Without dead ends: 15 [2018-06-22 14:16:19,931 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:16:19,931 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:16:19,933 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:16:19,933 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:16:19,934 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:16:19,934 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:16:19,934 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:16:19,934 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:16:19,934 INFO ]: Interpolant automaton has 10 states. [2018-06-22 14:16:19,934 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:16:19,935 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:16:19,935 INFO ]: Found error trace [2018-06-22 14:16:19,935 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:16:19,935 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:16:19,935 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 14:16:19,935 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:16:19,935 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:16:19,936 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:16:19,936 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:16:19,936 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:16:20,059 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:16:20,424 WARN ]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:16:20,626 WARN ]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 14:16:20,673 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:16:20,673 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:16:20,673 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 14:16:20,679 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:16:20,783 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:16:20,783 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:16:20,791 INFO ]: Computing forward predicates... [2018-06-22 14:16:22,058 WARN ]: Spent 277.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-06-22 14:16:23,097 INFO ]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:16:23,130 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:16:23,130 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2018-06-22 14:16:23,131 INFO ]: Interpolant automaton has 14 states [2018-06-22 14:16:23,131 INFO ]: Constructing interpolant automaton starting with 14 interpolants. [2018-06-22 14:16:23,131 INFO ]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-06-22 14:16:23,131 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 14 states. [2018-06-22 14:16:23,501 WARN ]: Spent 119.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11 [2018-06-22 14:16:23,582 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:16:23,582 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:16:23,583 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:16:23,583 INFO ]: Start accepts. Automaton has 14 states. Word has length 17 [2018-06-22 14:16:23,583 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:16:23,583 INFO ]: With dead ends: 17 [2018-06-22 14:16:23,583 INFO ]: Without dead ends: 17 [2018-06-22 14:16:23,584 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2018-06-22 14:16:23,584 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:16:23,587 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:16:23,587 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:16:23,587 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:16:23,588 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 14:16:23,588 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:16:23,588 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:16:23,588 INFO ]: Interpolant automaton has 14 states. [2018-06-22 14:16:23,588 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:16:23,588 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:16:23,588 INFO ]: Found error trace [2018-06-22 14:16:23,588 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:16:23,589 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:16:23,589 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 14:16:23,589 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:16:23,589 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:16:23,590 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:16:23,590 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:16:23,590 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:16:23,717 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:16:24,151 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:16:24,151 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:16:24,151 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 14:16:24,158 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:16:24,293 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 14:16:24,293 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:16:24,303 INFO ]: Computing forward predicates... [2018-06-22 14:16:26,283 WARN ]: Spent 728.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 72 [2018-06-22 14:16:26,852 WARN ]: Spent 193.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2018-06-22 14:16:26,951 INFO ]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:16:26,984 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:16:26,984 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-06-22 14:16:26,984 INFO ]: Interpolant automaton has 18 states [2018-06-22 14:16:26,984 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 14:16:26,984 INFO ]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-06-22 14:16:26,984 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 18 states. [2018-06-22 14:16:27,501 WARN ]: Spent 456.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2018-06-22 14:16:27,939 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2018-06-22 14:16:28,294 WARN ]: Spent 331.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2018-06-22 14:16:28,498 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:16:28,498 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:16:28,498 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:16:28,498 INFO ]: Start accepts. Automaton has 18 states. Word has length 21 [2018-06-22 14:16:28,498 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:16:28,499 INFO ]: With dead ends: 21 [2018-06-22 14:16:28,499 INFO ]: Without dead ends: 21 [2018-06-22 14:16:28,499 INFO ]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2018-06-22 14:16:28,499 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:16:28,503 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:16:28,503 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:16:28,503 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:16:28,503 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-06-22 14:16:28,503 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:16:28,503 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:16:28,504 INFO ]: Interpolant automaton has 18 states. [2018-06-22 14:16:28,504 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:16:28,504 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:16:28,504 INFO ]: Found error trace [2018-06-22 14:16:28,504 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:16:28,505 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:16:28,505 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 4 times [2018-06-22 14:16:28,505 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:16:28,505 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:16:28,506 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:16:28,506 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:16:28,506 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:16:28,779 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:16:29,541 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:16:29,541 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:16:29,541 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 14:16:29,547 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 14:16:29,745 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 14:16:29,745 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:16:29,759 INFO ]: Computing forward predicates... [2018-06-22 14:16:31,622 WARN ]: Spent 1.03 s on a formula simplification. DAG size of input: 219 DAG size of output: 10 [2018-06-22 14:16:35,449 WARN ]: Spent 3.21 s on a formula simplification. DAG size of input: 259 DAG size of output: 145 [2018-06-22 14:16:38,913 WARN ]: Spent 2.92 s on a formula simplification. DAG size of input: 261 DAG size of output: 147 [2018-06-22 14:16:40,573 WARN ]: Spent 314.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 26 [2018-06-22 14:16:40,922 INFO ]: Checked inductivity of 55 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 14:16:40,943 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:16:40,944 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 25 [2018-06-22 14:16:40,944 INFO ]: Interpolant automaton has 25 states [2018-06-22 14:16:40,944 INFO ]: Constructing interpolant automaton starting with 25 interpolants. [2018-06-22 14:16:40,944 INFO ]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2018-06-22 14:16:40,944 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 25 states. [2018-06-22 14:16:42,873 WARN ]: Spent 1.87 s on a formula simplification. DAG size of input: 191 DAG size of output: 181 [2018-06-22 14:16:43,158 WARN ]: Spent 208.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 36 [2018-06-22 14:16:43,456 WARN ]: Spent 224.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 34 [2018-06-22 14:16:43,730 WARN ]: Spent 229.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 36 [2018-06-22 14:16:44,191 WARN ]: Spent 281.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 52 [2018-06-22 14:16:45,365 WARN ]: Spent 1.11 s on a formula simplification. DAG size of input: 186 DAG size of output: 172 [2018-06-22 14:16:46,428 WARN ]: Spent 1.00 s on a formula simplification. DAG size of input: 185 DAG size of output: 170 [2018-06-22 14:16:48,223 WARN ]: Spent 1.73 s on a formula simplification. DAG size of input: 191 DAG size of output: 178 [2018-06-22 14:16:48,365 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:16:48,365 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-22 14:16:48,367 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 14:16:48,367 INFO ]: Start accepts. Automaton has 25 states. Word has length 29 [2018-06-22 14:16:48,367 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:16:48,368 INFO ]: With dead ends: 27 [2018-06-22 14:16:48,368 INFO ]: Without dead ends: 27 [2018-06-22 14:16:48,369 INFO ]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=255, Invalid=801, Unknown=0, NotChecked=0, Total=1056 [2018-06-22 14:16:48,369 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 14:16:48,373 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 14:16:48,373 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 14:16:48,374 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-22 14:16:48,374 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 29 [2018-06-22 14:16:48,374 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:16:48,374 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-22 14:16:48,374 INFO ]: Interpolant automaton has 25 states. [2018-06-22 14:16:48,374 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-22 14:16:48,375 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 14:16:48,375 INFO ]: Found error trace [2018-06-22 14:16:48,375 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:16:48,375 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:16:48,375 INFO ]: Analyzing trace with hash -544278078, now seen corresponding path program 5 times [2018-06-22 14:16:48,375 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:16:48,375 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:16:48,377 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:16:48,377 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:16:48,377 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:16:49,155 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:16:50,306 WARN ]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:16:50,596 WARN ]: Spent 250.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 19 [2018-06-22 14:16:51,907 WARN ]: Spent 1.24 s on a formula simplification. DAG size of input: 292 DAG size of output: 90 [2018-06-22 14:16:53,505 WARN ]: Spent 1.55 s on a formula simplification. DAG size of input: 353 DAG size of output: 127 [2018-06-22 14:16:55,643 WARN ]: Spent 2.09 s on a formula simplification. DAG size of input: 327 DAG size of output: 205 [2018-06-22 14:16:56,363 WARN ]: Spent 684.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 90 [2018-06-22 14:16:56,935 WARN ]: Spent 355.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 60 [2018-06-22 14:16:57,902 WARN ]: Spent 911.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 97 [2018-06-22 14:16:58,546 WARN ]: Spent 559.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 35 [2018-06-22 14:16:58,909 WARN ]: Spent 308.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 42 [2018-06-22 14:16:58,963 INFO ]: Checked inductivity of 136 backedges. 2 proven. 98 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 14:16:58,963 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:16:58,963 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 14:16:58,969 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 14:16:59,431 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2018-06-22 14:16:59,431 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:16:59,454 INFO ]: Computing forward predicates... [2018-06-22 14:17:00,450 WARN ]: Spent 429.00 ms on a formula simplification. DAG size of input: 219 DAG size of output: 10 [2018-06-22 14:17:06,999 WARN ]: Spent 5.66 s on a formula simplification. DAG size of input: 469 DAG size of output: 149 Received shutdown request... [2018-06-22 14:17:15,833 WARN ]: Removed 194 from assertion stack [2018-06-22 14:17:15,833 INFO ]: Timeout while computing interpolants [2018-06-22 14:17:16,033 WARN ]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:17:16,034 WARN ]: Verification canceled [2018-06-22 14:17:16,038 WARN ]: Timeout [2018-06-22 14:17:16,038 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:17:16 BoogieIcfgContainer [2018-06-22 14:17:16,038 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:17:16,039 INFO ]: Toolchain (without parser) took 60281.95 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 958.4 MB). Free memory was 240.8 MB in the beginning and 591.1 MB in the end (delta: -350.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-22 14:17:16,043 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:17:16,043 INFO ]: ChcToBoogie took 86.52 ms. Allocated memory is still 309.3 MB. Free memory was 239.8 MB in the beginning and 237.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:17:16,043 INFO ]: Boogie Preprocessor took 84.99 ms. Allocated memory is still 309.3 MB. Free memory was 237.8 MB in the beginning and 235.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:17:16,044 INFO ]: RCFGBuilder took 477.13 ms. Allocated memory is still 309.3 MB. Free memory was 235.8 MB in the beginning and 207.7 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:17:16,044 INFO ]: TraceAbstraction took 59623.24 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 958.4 MB). Free memory was 207.7 MB in the beginning and 591.1 MB in the end (delta: -383.4 MB). Peak memory consumption was 991.4 MB. Max. memory is 3.6 GB. [2018-06-22 14:17:16,046 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 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 86.52 ms. Allocated memory is still 309.3 MB. Free memory was 239.8 MB in the beginning and 237.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 84.99 ms. Allocated memory is still 309.3 MB. Free memory was 237.8 MB in the beginning and 235.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 477.13 ms. Allocated memory is still 309.3 MB. Free memory was 235.8 MB in the beginning and 207.7 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 59623.24 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 958.4 MB). Free memory was 207.7 MB in the beginning and 591.1 MB in the end (delta: -383.4 MB). Peak memory consumption was 991.4 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 42 with TraceHistMax 9, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 597. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 59.5s OverallTime, 6 OverallIterations, 9 TraceHistogramMax, 10.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 101 SDslu, 253 SDs, 0 SdLazy, 201 SolverSat, 129 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 23.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 1.0s SatisfiabilityAnalysisTime, 20.0s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 90156 SizeOfPredicates, 1505 NumberOfNonLiveVariables, 1432 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 60/178 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_12.cil.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-17-16-057.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_12.cil.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-17-16-057.csv Completed graceful shutdown