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_7.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:22:43,023 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:22:43,026 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:22:43,041 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:22:43,041 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:22:43,042 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:22:43,044 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:22:43,047 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:22:43,048 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:22:43,050 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:22:43,051 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:22:43,051 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:22:43,052 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:22:43,056 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:22:43,057 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:22:43,058 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:22:43,070 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:22:43,072 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:22:43,074 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:22:43,075 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:22:43,076 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:22:43,081 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:22:43,082 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:22:43,082 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:22:43,083 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:22:43,084 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:22:43,084 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:22:43,086 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:22:43,088 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:22:43,088 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:22:43,088 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:22:43,089 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:22:43,089 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:22:43,094 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:22:43,095 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:22:43,095 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 14:22:43,117 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:22:43,118 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:22:43,118 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:22:43,118 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:22:43,120 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:22:43,120 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:22:43,120 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:22:43,120 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:22:43,121 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:22:43,121 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:22:43,121 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:22:43,121 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:22:43,121 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:22:43,122 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:22:43,122 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:22:43,122 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:22:43,122 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:22:43,122 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:22:43,122 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:22:43,125 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:22:43,125 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:22:43,172 INFO ]: Repository-Root is: /tmp [2018-06-22 14:22:43,186 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:22:43,191 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:22:43,192 INFO ]: Initializing SmtParser... [2018-06-22 14:22:43,193 INFO ]: SmtParser initialized [2018-06-22 14:22:43,193 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_7.cil.smt2 [2018-06-22 14:22:43,195 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 14:22:43,282 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_7.cil.smt2 unknown [2018-06-22 14:22:43,767 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_7.cil.smt2 [2018-06-22 14:22:43,772 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:22:43,783 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:22:43,784 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:22:43,784 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:22:43,784 INFO ]: ChcToBoogie initialized [2018-06-22 14:22:43,787 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:22:43" (1/1) ... [2018-06-22 14:22:43,892 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:22:43 Unit [2018-06-22 14:22:43,892 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:22:43,893 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:22:43,893 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:22:43,893 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:22:43,928 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:22:43" (1/1) ... [2018-06-22 14:22:43,928 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:22:43" (1/1) ... [2018-06-22 14:22:43,960 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:22:43" (1/1) ... [2018-06-22 14:22:43,960 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:22:43" (1/1) ... [2018-06-22 14:22:43,989 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:22:43" (1/1) ... [2018-06-22 14:22:43,991 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:22:43" (1/1) ... [2018-06-22 14:22:43,995 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:22:43" (1/1) ... [2018-06-22 14:22:44,001 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:22:44,001 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:22:44,001 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:22:44,001 INFO ]: RCFGBuilder initialized [2018-06-22 14:22:44,004 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:22:43" (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 14:22:44,015 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:22:44,015 INFO ]: Found specification of procedure False [2018-06-22 14:22:44,015 INFO ]: Found implementation of procedure False [2018-06-22 14:22:44,015 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:22:44,015 INFO ]: Found specification of procedure state [2018-06-22 14:22:44,015 INFO ]: Found implementation of procedure state [2018-06-22 14:22:44,015 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:22:44,015 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:22:44,015 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 14:22:44,370 INFO ]: Using library mode [2018-06-22 14:22:44,375 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:22:44 BoogieIcfgContainer [2018-06-22 14:22:44,375 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:22:44,377 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:22:44,377 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:22:44,382 INFO ]: TraceAbstraction initialized [2018-06-22 14:22:44,382 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:22:43" (1/3) ... [2018-06-22 14:22:44,383 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50fe629e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:22:44, skipping insertion in model container [2018-06-22 14:22:44,383 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:22:43" (2/3) ... [2018-06-22 14:22:44,384 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50fe629e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:22:44, skipping insertion in model container [2018-06-22 14:22:44,384 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:22:44" (3/3) ... [2018-06-22 14:22:44,386 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:22:44,396 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:22:44,407 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:22:44,458 INFO ]: Using default assertion order modulation [2018-06-22 14:22:44,458 INFO ]: Interprodecural is true [2018-06-22 14:22:44,458 INFO ]: Hoare is false [2018-06-22 14:22:44,458 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:22:44,458 INFO ]: Backedges is TWOTRACK [2018-06-22 14:22:44,458 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:22:44,459 INFO ]: Difference is false [2018-06-22 14:22:44,459 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:22:44,459 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:22:44,482 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:22:44,498 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:22:44,498 INFO ]: Found error trace [2018-06-22 14:22:44,499 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:22:44,499 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:22:44,505 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 14:22:44,507 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:22:44,507 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:22:44,557 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:22:44,557 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:22:44,557 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:22:44,605 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:22:44,716 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:22:44,718 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:22:44,718 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:22:44,719 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:22:44,733 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:22:44,733 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:22:44,735 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:22:44,838 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:22:44,838 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:22:44,838 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:22:44,839 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:22:44,840 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:22:44,848 INFO ]: With dead ends: 13 [2018-06-22 14:22:44,848 INFO ]: Without dead ends: 13 [2018-06-22 14:22:44,849 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 14:22:44,867 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:22:44,911 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:22:44,912 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:22:44,913 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:22:44,914 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:22:44,914 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:22:44,914 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:22:44,914 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:22:44,914 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:22:44,915 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:22:44,915 INFO ]: Found error trace [2018-06-22 14:22:44,915 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:22:44,915 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:22:44,915 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 14:22:44,915 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:22:44,915 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:22:44,916 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:22:44,916 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:22:44,916 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:22:45,092 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:22:45,406 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:22:45,406 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:22:45,406 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 14:22:45,423 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:22:45,523 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:22:45,533 INFO ]: Computing forward predicates... [2018-06-22 14:22:46,169 WARN ]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-06-22 14:22:46,367 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:22:46,402 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:22:46,402 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 14:22:46,402 INFO ]: Interpolant automaton has 8 states [2018-06-22 14:22:46,402 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 14:22:46,402 INFO ]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-06-22 14:22:46,403 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 14:22:46,717 WARN ]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-06-22 14:22:47,056 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:22:47,057 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:22:47,057 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:22:47,057 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 14:22:47,057 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:22:47,058 INFO ]: With dead ends: 15 [2018-06-22 14:22:47,058 INFO ]: Without dead ends: 15 [2018-06-22 14:22:47,059 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-06-22 14:22:47,059 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:22:47,061 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:22:47,061 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:22:47,061 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:22:47,061 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:22:47,062 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:22:47,062 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:22:47,062 INFO ]: Interpolant automaton has 8 states. [2018-06-22 14:22:47,062 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:22:47,062 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:22:47,062 INFO ]: Found error trace [2018-06-22 14:22:47,062 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:22:47,062 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:22:47,062 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 14:22:47,063 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:22:47,063 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:22:47,063 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:22:47,063 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:22:47,063 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:22:47,145 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:22:47,441 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:22:47,441 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:22:47,441 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 14:22:47,449 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:22:47,565 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:22:47,565 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:22:47,574 INFO ]: Computing forward predicates... [2018-06-22 14:22:49,475 WARN ]: Spent 1.11 s on a formula simplification. DAG size of input: 14 DAG size of output: 12 [2018-06-22 14:22:49,975 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:22:49,997 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:22:49,997 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-22 14:22:49,997 INFO ]: Interpolant automaton has 12 states [2018-06-22 14:22:49,997 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-22 14:22:49,997 INFO ]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-06-22 14:22:49,998 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-22 14:22:50,308 WARN ]: Spent 226.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2018-06-22 14:22:50,456 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:22:50,456 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:22:50,456 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:22:50,456 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-22 14:22:50,456 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:22:50,457 INFO ]: With dead ends: 17 [2018-06-22 14:22:50,457 INFO ]: Without dead ends: 17 [2018-06-22 14:22:50,457 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-06-22 14:22:50,457 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:22:50,460 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:22:50,460 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:22:50,461 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:22:50,461 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 14:22:50,461 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:22:50,461 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:22:50,461 INFO ]: Interpolant automaton has 12 states. [2018-06-22 14:22:50,461 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:22:50,461 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:22:50,461 INFO ]: Found error trace [2018-06-22 14:22:50,462 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:22:50,462 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:22:50,462 INFO ]: Analyzing trace with hash 2119922091, now seen corresponding path program 3 times [2018-06-22 14:22:50,462 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:22:50,462 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:22:50,462 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:22:50,462 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:22:50,463 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:22:50,564 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:22:50,919 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:22:50,919 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:22:50,919 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 14:22:50,930 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:22:51,079 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 14:22:51,079 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:22:51,091 INFO ]: Computing forward predicates... [2018-06-22 14:22:59,073 WARN ]: Spent 6.97 s on a formula simplification. DAG size of input: 225 DAG size of output: 114 [2018-06-22 14:23:00,670 WARN ]: Spent 828.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 24 [2018-06-22 14:23:00,712 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:23:00,733 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:23:00,733 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-06-22 14:23:00,734 INFO ]: Interpolant automaton has 15 states [2018-06-22 14:23:00,734 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 14:23:00,734 INFO ]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2018-06-22 14:23:00,734 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 15 states. [2018-06-22 14:23:01,535 WARN ]: Spent 694.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 134 [2018-06-22 14:23:01,905 WARN ]: Spent 342.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 85 [2018-06-22 14:23:02,277 WARN ]: Spent 336.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 94 [2018-06-22 14:23:02,669 WARN ]: Spent 364.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 125 [2018-06-22 14:23:02,696 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:23:02,696 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-22 14:23:02,697 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 14:23:02,697 INFO ]: Start accepts. Automaton has 15 states. Word has length 21 [2018-06-22 14:23:02,697 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:23:02,698 INFO ]: With dead ends: 19 [2018-06-22 14:23:02,698 INFO ]: Without dead ends: 19 [2018-06-22 14:23:02,698 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2018-06-22 14:23:02,698 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-22 14:23:02,700 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-22 14:23:02,700 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-22 14:23:02,703 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-22 14:23:02,703 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 21 [2018-06-22 14:23:02,703 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:23:02,703 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-22 14:23:02,703 INFO ]: Interpolant automaton has 15 states. [2018-06-22 14:23:02,703 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-22 14:23:02,704 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-22 14:23:02,704 INFO ]: Found error trace [2018-06-22 14:23:02,704 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:23:02,704 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:23:02,704 INFO ]: Analyzing trace with hash 1762711629, now seen corresponding path program 4 times [2018-06-22 14:23:02,704 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:23:02,704 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:23:02,705 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:23:02,705 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:23:02,705 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:23:02,889 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:23:03,355 WARN ]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-22 14:23:03,967 WARN ]: Spent 544.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 28 [2018-06-22 14:23:04,116 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:23:04,116 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:23:04,116 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 14:23:04,128 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 14:23:04,248 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 14:23:04,249 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:23:04,261 INFO ]: Computing forward predicates... [2018-06-22 14:23:05,052 WARN ]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 14:23:05,933 WARN ]: Spent 419.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 21 [2018-06-22 14:23:07,728 WARN ]: Spent 845.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2018-06-22 14:23:08,645 WARN ]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-06-22 14:23:08,815 INFO ]: Checked inductivity of 36 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-22 14:23:08,847 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:23:08,847 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2018-06-22 14:23:08,848 INFO ]: Interpolant automaton has 19 states [2018-06-22 14:23:08,848 INFO ]: Constructing interpolant automaton starting with 19 interpolants. [2018-06-22 14:23:08,848 INFO ]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2018-06-22 14:23:08,848 INFO ]: Start difference. First operand 19 states and 20 transitions. Second operand 19 states. [2018-06-22 14:23:09,973 WARN ]: Spent 679.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2018-06-22 14:23:10,247 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 36 [2018-06-22 14:23:10,412 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 65 [2018-06-22 14:23:10,728 WARN ]: Spent 226.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 84 [2018-06-22 14:23:10,770 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:23:10,770 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:23:10,771 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:23:10,771 INFO ]: Start accepts. Automaton has 19 states. Word has length 25 [2018-06-22 14:23:10,771 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:23:10,772 INFO ]: With dead ends: 21 [2018-06-22 14:23:10,772 INFO ]: Without dead ends: 21 [2018-06-22 14:23:10,772 INFO ]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2018-06-22 14:23:10,772 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:23:10,775 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:23:10,775 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:23:10,776 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:23:10,776 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 25 [2018-06-22 14:23:10,776 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:23:10,776 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:23:10,776 INFO ]: Interpolant automaton has 19 states. [2018-06-22 14:23:10,776 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:23:10,777 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:23:10,777 INFO ]: Found error trace [2018-06-22 14:23:10,777 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:23:10,777 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:23:10,777 INFO ]: Analyzing trace with hash 853117551, now seen corresponding path program 5 times [2018-06-22 14:23:10,777 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:23:10,777 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:23:10,778 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:23:10,778 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:23:10,778 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:23:11,033 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:23:12,023 WARN ]: Spent 462.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 20 [2018-06-22 14:23:12,348 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:23:12,348 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:23:12,348 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 14:23:12,356 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 14:23:12,576 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-06-22 14:23:12,576 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:23:12,601 INFO ]: Computing forward predicates... [2018-06-22 14:23:15,492 WARN ]: Spent 2.30 s on a formula simplification. DAG size of input: 309 DAG size of output: 115 [2018-06-22 14:23:27,455 WARN ]: Spent 11.32 s on a formula simplification. DAG size of input: 381 DAG size of output: 285 [2018-06-22 14:23:29,542 WARN ]: Spent 1.49 s on a formula simplification. DAG size of input: 380 DAG size of output: 83 [2018-06-22 14:23:34,091 WARN ]: Spent 3.80 s on a formula simplification. DAG size of input: 322 DAG size of output: 175 [2018-06-22 14:23:34,972 WARN ]: Spent 387.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 35 [2018-06-22 14:23:35,724 WARN ]: Spent 190.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 30 [2018-06-22 14:23:35,789 INFO ]: Checked inductivity of 55 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:23:35,810 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:23:35,810 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2018-06-22 14:23:35,810 INFO ]: Interpolant automaton has 24 states [2018-06-22 14:23:35,811 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 14:23:35,811 INFO ]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2018-06-22 14:23:35,811 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 24 states. [2018-06-22 14:23:36,873 WARN ]: Spent 937.00 ms on a formula simplification. DAG size of input: 286 DAG size of output: 48 Received shutdown request... [2018-06-22 14:23:38,801 WARN ]: Removed 15 from assertion stack [2018-06-22 14:23:38,801 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:23:38,802 WARN ]: Verification canceled [2018-06-22 14:23:38,805 WARN ]: Timeout [2018-06-22 14:23:38,805 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 02:23:38 BoogieIcfgContainer [2018-06-22 14:23:38,806 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 14:23:38,806 INFO ]: Toolchain (without parser) took 55033.92 ms. Allocated memory was 307.2 MB in the beginning and 1.0 GB in the end (delta: 709.9 MB). Free memory was 240.7 MB in the beginning and 874.5 MB in the end (delta: -633.9 MB). Peak memory consumption was 773.1 MB. Max. memory is 3.6 GB. [2018-06-22 14:23:38,807 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 14:23:38,807 INFO ]: ChcToBoogie took 108.23 ms. Allocated memory is still 307.2 MB. Free memory was 240.7 MB in the beginning and 237.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:23:38,808 INFO ]: Boogie Preprocessor took 108.21 ms. Allocated memory is still 307.2 MB. Free memory was 237.7 MB in the beginning and 235.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 14:23:38,808 INFO ]: RCFGBuilder took 374.16 ms. Allocated memory is still 307.2 MB. Free memory was 235.7 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 14:23:38,808 INFO ]: TraceAbstraction took 54428.70 ms. Allocated memory was 307.2 MB in the beginning and 1.0 GB in the end (delta: 709.9 MB). Free memory was 207.7 MB in the beginning and 874.5 MB in the end (delta: -666.9 MB). Peak memory consumption was 740.1 MB. Max. memory is 3.6 GB. [2018-06-22 14:23:38,811 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 108.23 ms. Allocated memory is still 307.2 MB. Free memory was 240.7 MB in the beginning and 237.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 108.21 ms. Allocated memory is still 307.2 MB. Free memory was 237.7 MB in the beginning and 235.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 374.16 ms. Allocated memory is still 307.2 MB. Free memory was 235.7 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 54428.70 ms. Allocated memory was 307.2 MB in the beginning and 1.0 GB in the end (delta: 709.9 MB). Free memory was 207.7 MB in the beginning and 874.5 MB in the end (delta: -666.9 MB). Peak memory consumption was 740.1 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 6 states, 24 states before enhancement), while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 289. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 54.3s OverallTime, 6 OverallIterations, 6 TraceHistogramMax, 8.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 91 SDslu, 242 SDs, 0 SdLazy, 207 SolverSat, 115 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 41.9s 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, 1.3s SatisfiabilityAnalysisTime, 44.2s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 178380 SizeOfPredicates, 2093 NumberOfNonLiveVariables, 1945 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 72/250 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_7.cil.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_14-23-38-820.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_7.cil.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_14-23-38-820.csv Completed graceful shutdown