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_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_clnt_3.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:33:04,970 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:33:04,972 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:33:04,988 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:33:04,988 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:33:04,991 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:33:04,993 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:33:04,995 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:33:04,996 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:33:04,998 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:33:04,998 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:33:05,000 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:33:05,001 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:33:05,002 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:33:05,002 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:33:05,005 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:33:05,006 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:33:05,015 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:33:05,017 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:33:05,017 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:33:05,018 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:33:05,020 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:33:05,021 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:33:05,025 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:33:05,026 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:33:05,026 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:33:05,027 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:33:05,027 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:33:05,028 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:33:05,029 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:33:05,033 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:33:05,033 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:33:05,033 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:33:05,034 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:33:05,035 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:33:05,035 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:33:05,052 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:33:05,052 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:33:05,053 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:33:05,053 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:33:05,055 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:33:05,055 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:33:05,056 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:33:05,056 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:33:05,056 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:33:05,057 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:33:05,057 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:33:05,057 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:33:05,057 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:33:05,057 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:33:05,057 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:33:05,058 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:33:05,058 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:33:05,059 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:33:05,059 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:33:05,106 INFO ]: Repository-Root is: /tmp [2018-06-22 04:33:05,121 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:33:05,124 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:33:05,125 INFO ]: Initializing SmtParser... [2018-06-22 04:33:05,125 INFO ]: SmtParser initialized [2018-06-22 04:33:05,126 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_clnt_3.cil.smt2 [2018-06-22 04:33:05,127 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 04:33:05,225 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_clnt_3.cil.smt2 unknown [2018-06-22 04:33:05,762 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_clnt_3.cil.smt2 [2018-06-22 04:33:05,769 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:33:05,783 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:33:05,784 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:33:05,784 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:33:05,784 INFO ]: ChcToBoogie initialized [2018-06-22 04:33:05,796 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:33:05" (1/1) ... [2018-06-22 04:33:05,919 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:33:05 Unit [2018-06-22 04:33:05,919 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:33:05,920 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:33:05,920 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:33:05,920 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:33:05,958 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:33:05" (1/1) ... [2018-06-22 04:33:05,958 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:33:05" (1/1) ... [2018-06-22 04:33:05,967 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:33:05" (1/1) ... [2018-06-22 04:33:05,967 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:33:05" (1/1) ... [2018-06-22 04:33:05,981 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:33:05" (1/1) ... [2018-06-22 04:33:05,982 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:33:05" (1/1) ... [2018-06-22 04:33:05,986 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:33:05" (1/1) ... [2018-06-22 04:33:05,991 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:33:05,992 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:33:05,992 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:33:05,992 INFO ]: RCFGBuilder initialized [2018-06-22 04:33:05,993 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:33:05" (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 04:33:06,003 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:33:06,003 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:33:06,004 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:33:06,004 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:33:06,004 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:33:06,004 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 04:33:06,431 INFO ]: Using library mode [2018-06-22 04:33:06,435 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:33:06 BoogieIcfgContainer [2018-06-22 04:33:06,435 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:33:06,437 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:33:06,437 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:33:06,444 INFO ]: TraceAbstraction initialized [2018-06-22 04:33:06,445 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:33:05" (1/3) ... [2018-06-22 04:33:06,446 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eab6cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:33:06, skipping insertion in model container [2018-06-22 04:33:06,446 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:33:05" (2/3) ... [2018-06-22 04:33:06,446 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eab6cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:33:06, skipping insertion in model container [2018-06-22 04:33:06,446 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:33:06" (3/3) ... [2018-06-22 04:33:06,449 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:33:06,459 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:33:06,468 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:33:06,522 INFO ]: Using default assertion order modulation [2018-06-22 04:33:06,523 INFO ]: Interprodecural is true [2018-06-22 04:33:06,523 INFO ]: Hoare is false [2018-06-22 04:33:06,523 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:33:06,523 INFO ]: Backedges is TWOTRACK [2018-06-22 04:33:06,523 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:33:06,523 INFO ]: Difference is false [2018-06-22 04:33:06,523 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:33:06,523 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:33:06,541 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:33:06,552 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:33:06,553 INFO ]: Found error trace [2018-06-22 04:33:06,556 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:33:06,556 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:33:06,562 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:33:06,564 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:33:06,564 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:33:06,608 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:33:06,609 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:33:06,609 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:33:06,676 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:33:06,773 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:33:06,776 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:33:06,776 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:33:06,777 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:33:06,789 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:33:06,790 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:33:06,792 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:33:06,876 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:33:06,876 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:33:06,877 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:33:06,878 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:33:06,879 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:33:06,890 INFO ]: With dead ends: 9 [2018-06-22 04:33:06,890 INFO ]: Without dead ends: 9 [2018-06-22 04:33:06,892 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:33:06,915 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:33:06,945 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:33:06,946 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:33:06,947 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:33:06,949 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:33:06,949 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:33:06,949 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:33:06,949 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:33:06,949 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:33:06,949 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:33:06,949 INFO ]: Found error trace [2018-06-22 04:33:06,949 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:33:06,949 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:33:06,949 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:33:06,949 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:33:06,949 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:33:06,950 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:33:06,950 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:33:06,950 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:33:07,119 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:33:07,411 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:33:07,411 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:33:07,411 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 04:33:07,419 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:33:07,559 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:33:07,572 INFO ]: Computing forward predicates... [2018-06-22 04:33:08,289 WARN ]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:33:08,313 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:33:08,363 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:33:08,363 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 04:33:08,364 INFO ]: Interpolant automaton has 6 states [2018-06-22 04:33:08,364 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 04:33:08,364 INFO ]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:33:08,364 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 04:33:08,583 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:33:08,583 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 04:33:08,584 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 04:33:08,584 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 04:33:08,584 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:33:08,584 INFO ]: With dead ends: 10 [2018-06-22 04:33:08,584 INFO ]: Without dead ends: 10 [2018-06-22 04:33:08,585 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:33:08,586 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 04:33:08,587 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 04:33:08,587 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 04:33:08,587 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 04:33:08,587 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 04:33:08,587 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:33:08,587 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 04:33:08,587 INFO ]: Interpolant automaton has 6 states. [2018-06-22 04:33:08,587 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 04:33:08,587 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 04:33:08,588 INFO ]: Found error trace [2018-06-22 04:33:08,588 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:33:08,588 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:33:08,588 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 04:33:08,588 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:33:08,588 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:33:08,588 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:33:08,588 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:33:08,589 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:33:08,717 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:33:08,993 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:33:08,993 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:33:08,993 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 04:33:09,002 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:33:09,127 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:33:09,127 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:33:09,137 INFO ]: Computing forward predicates... [2018-06-22 04:33:09,857 WARN ]: Spent 189.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 2 [2018-06-22 04:33:10,052 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:33:10,075 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:33:10,075 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 04:33:10,076 INFO ]: Interpolant automaton has 8 states [2018-06-22 04:33:10,076 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 04:33:10,076 INFO ]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-22 04:33:10,076 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 04:33:10,225 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:33:10,225 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:33:10,226 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 04:33:10,226 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 04:33:10,226 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:33:10,226 INFO ]: With dead ends: 11 [2018-06-22 04:33:10,226 INFO ]: Without dead ends: 11 [2018-06-22 04:33:10,227 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:33:10,227 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:33:10,228 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:33:10,228 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:33:10,228 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:33:10,229 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 04:33:10,229 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:33:10,229 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:33:10,229 INFO ]: Interpolant automaton has 8 states. [2018-06-22 04:33:10,229 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:33:10,229 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:33:10,229 INFO ]: Found error trace [2018-06-22 04:33:10,229 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:33:10,229 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:33:10,229 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 3 times [2018-06-22 04:33:10,229 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:33:10,229 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:33:10,230 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:33:10,230 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:33:10,230 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:33:10,323 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:33:10,687 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:33:10,687 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:33:10,687 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 04:33:10,693 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:33:10,809 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 04:33:10,809 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:33:10,817 INFO ]: Computing forward predicates... [2018-06-22 04:33:11,558 WARN ]: Spent 270.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-06-22 04:33:11,720 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:33:11,743 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:33:11,743 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 04:33:11,743 INFO ]: Interpolant automaton has 10 states [2018-06-22 04:33:11,743 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 04:33:11,743 INFO ]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:33:11,743 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 10 states. [2018-06-22 04:33:11,910 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:33:11,910 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-22 04:33:11,910 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 04:33:11,910 INFO ]: Start accepts. Automaton has 10 states. Word has length 10 [2018-06-22 04:33:11,910 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:33:11,910 INFO ]: With dead ends: 12 [2018-06-22 04:33:11,910 INFO ]: Without dead ends: 12 [2018-06-22 04:33:11,911 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:33:11,911 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-22 04:33:11,912 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-22 04:33:11,912 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-22 04:33:11,912 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-22 04:33:11,913 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-22 04:33:11,913 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:33:11,913 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-22 04:33:11,913 INFO ]: Interpolant automaton has 10 states. [2018-06-22 04:33:11,913 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-22 04:33:11,913 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-22 04:33:11,913 INFO ]: Found error trace [2018-06-22 04:33:11,913 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:33:11,913 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:33:11,914 INFO ]: Analyzing trace with hash -1433955954, now seen corresponding path program 4 times [2018-06-22 04:33:11,914 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:33:11,914 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:33:11,914 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:33:11,914 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:33:11,914 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:33:12,029 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:33:12,658 WARN ]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 04:33:12,710 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:33:12,710 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:33:12,710 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 04:33:12,716 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 04:33:12,861 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:33:12,861 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:33:12,871 INFO ]: Computing forward predicates... [2018-06-22 04:33:15,880 WARN ]: Spent 1.91 s on a formula simplification. DAG size of input: 243 DAG size of output: 109 [2018-06-22 04:33:33,853 WARN ]: Simplifying disjunction of 9011 conjuctions. This might take some time... [2018-06-22 04:33:38,548 INFO ]: Simplified to disjunction of 9011 conjuctions. Received shutdown request... [2018-06-22 04:34:14,152 INFO ]: Timeout while computing interpolants [2018-06-22 04:34:14,353 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:34:14,353 WARN ]: Verification canceled [2018-06-22 04:34:14,357 WARN ]: Timeout [2018-06-22 04:34:14,358 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:34:14 BoogieIcfgContainer [2018-06-22 04:34:14,358 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:34:14,359 INFO ]: Toolchain (without parser) took 68581.47 ms. Allocated memory was 305.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 242.3 MB in the beginning and 177.4 MB in the end (delta: 64.9 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:34:14,360 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:34:14,360 INFO ]: ChcToBoogie took 135.47 ms. Allocated memory is still 305.7 MB. Free memory was 242.3 MB in the beginning and 239.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:34:14,360 INFO ]: Boogie Preprocessor took 71.87 ms. Allocated memory is still 305.7 MB. Free memory was 239.3 MB in the beginning and 237.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:34:14,361 INFO ]: RCFGBuilder took 443.03 ms. Allocated memory is still 305.7 MB. Free memory was 237.3 MB in the beginning and 209.8 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 3.6 GB. [2018-06-22 04:34:14,362 INFO ]: TraceAbstraction took 67920.54 ms. Allocated memory was 305.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 209.8 MB in the beginning and 177.4 MB in the end (delta: 32.4 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:34:14,365 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 305.7 MB. Free memory is still 271.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 135.47 ms. Allocated memory is still 305.7 MB. Free memory was 242.3 MB in the beginning and 239.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 71.87 ms. Allocated memory is still 305.7 MB. Free memory was 239.3 MB in the beginning and 237.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 443.03 ms. Allocated memory is still 305.7 MB. Free memory was 237.3 MB in the beginning and 209.8 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 3.6 GB. * TraceAbstraction took 67920.54 ms. Allocated memory was 305.7 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 209.8 MB in the beginning and 177.4 MB in the end (delta: 32.4 MB). Peak memory consumption was 1.3 GB. 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 12 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 1195 quantified variables from 86 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 67.8s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 3 SDslu, 60 SDs, 0 SdLazy, 28 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=4, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 1198 SizeOfPredicates, 8 NumberOfNonLiveVariables, 933 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/20 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_clnt_3.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-34-14-375.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_clnt_3.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-34-14-375.csv Completed graceful shutdown