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_srvr_7.cil.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:41:45,429 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:41:45,432 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:41:45,446 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:41:45,446 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:41:45,447 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:41:45,451 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:41:45,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:41:45,455 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:41:45,457 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:41:45,458 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:41:45,458 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:41:45,459 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:41:45,460 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:41:45,460 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:41:45,464 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:41:45,465 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:41:45,476 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:41:45,477 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:41:45,478 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:41:45,479 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:41:45,485 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:41:45,486 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:41:45,486 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:41:45,487 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:41:45,487 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:41:45,488 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:41:45,489 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:41:45,490 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:41:45,494 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:41:45,495 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:41:45,495 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:41:45,495 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:41:45,496 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:41:45,497 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:41:45,498 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:41:45,522 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:41:45,522 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:41:45,523 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:41:45,523 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:41:45,524 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:41:45,524 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:41:45,524 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:41:45,525 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:41:45,525 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:41:45,525 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:41:45,525 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:41:45,525 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:41:45,525 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:41:45,526 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:41:45,526 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:41:45,527 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:41:45,527 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:41:45,528 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:41:45,529 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:41:45,578 INFO ]: Repository-Root is: /tmp [2018-06-22 04:41:45,594 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:41:45,599 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:41:45,601 INFO ]: Initializing SmtParser... [2018-06-22 04:41:45,601 INFO ]: SmtParser initialized [2018-06-22 04:41:45,602 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_7.cil.smt2 [2018-06-22 04:41:45,603 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 04:41:45,700 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_7.cil.smt2 unknown [2018-06-22 04:41:46,181 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/s3_srvr_7.cil.smt2 [2018-06-22 04:41:46,186 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:41:46,192 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:41:46,192 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:41:46,192 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:41:46,193 INFO ]: ChcToBoogie initialized [2018-06-22 04:41:46,201 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:41:46" (1/1) ... [2018-06-22 04:41:46,337 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:41:46 Unit [2018-06-22 04:41:46,337 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:41:46,338 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:41:46,338 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:41:46,338 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:41:46,362 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:41:46" (1/1) ... [2018-06-22 04:41:46,362 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:41:46" (1/1) ... [2018-06-22 04:41:46,382 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:41:46" (1/1) ... [2018-06-22 04:41:46,383 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:41:46" (1/1) ... [2018-06-22 04:41:46,412 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:41:46" (1/1) ... [2018-06-22 04:41:46,414 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:41:46" (1/1) ... [2018-06-22 04:41:46,417 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:41:46" (1/1) ... [2018-06-22 04:41:46,431 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:41:46,431 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:41:46,431 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:41:46,431 INFO ]: RCFGBuilder initialized [2018-06-22 04:41:46,432 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:41:46" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:41:46,453 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:41:46,453 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:41:46,453 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:41:46,453 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:41:46,453 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:41:46,453 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 04:41:46,990 INFO ]: Using library mode [2018-06-22 04:41:46,993 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:41:46 BoogieIcfgContainer [2018-06-22 04:41:46,993 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:41:46,995 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:41:46,995 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:41:46,998 INFO ]: TraceAbstraction initialized [2018-06-22 04:41:46,998 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:41:46" (1/3) ... [2018-06-22 04:41:46,999 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423e0be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:41:46, skipping insertion in model container [2018-06-22 04:41:46,999 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:41:46" (2/3) ... [2018-06-22 04:41:47,000 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@423e0be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:41:46, skipping insertion in model container [2018-06-22 04:41:47,000 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:41:46" (3/3) ... [2018-06-22 04:41:47,002 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:41:47,011 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:41:47,021 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:41:47,072 INFO ]: Using default assertion order modulation [2018-06-22 04:41:47,072 INFO ]: Interprodecural is true [2018-06-22 04:41:47,072 INFO ]: Hoare is false [2018-06-22 04:41:47,072 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:41:47,072 INFO ]: Backedges is TWOTRACK [2018-06-22 04:41:47,072 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:41:47,072 INFO ]: Difference is false [2018-06-22 04:41:47,072 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:41:47,072 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:41:47,086 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:41:47,096 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:41:47,096 INFO ]: Found error trace [2018-06-22 04:41:47,097 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:41:47,097 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:41:47,101 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:41:47,102 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:41:47,102 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:41:47,135 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:41:47,135 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:41:47,135 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:41:47,211 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:41:47,340 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:41:47,343 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:41:47,343 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:41:47,345 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:41:47,384 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:41:47,385 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:41:47,388 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:41:47,487 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:41:47,487 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:41:47,487 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:41:47,489 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:41:47,489 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:41:47,501 INFO ]: With dead ends: 9 [2018-06-22 04:41:47,501 INFO ]: Without dead ends: 9 [2018-06-22 04:41:47,503 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 04:41:47,521 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:41:47,547 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:41:47,549 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:41:47,549 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:41:47,550 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:41:47,550 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:41:47,550 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:41:47,550 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:41:47,550 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:41:47,550 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:41:47,550 INFO ]: Found error trace [2018-06-22 04:41:47,550 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:41:47,551 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:41:47,551 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:41:47,551 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:41:47,551 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:41:47,552 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:41:47,552 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:41:47,552 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:41:47,698 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:41:47,998 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:41:47,998 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:41:47,998 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 04:41:48,007 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:41:48,124 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:41:48,135 INFO ]: Computing forward predicates... [2018-06-22 04:41:48,539 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:41:48,561 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:41:48,561 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 04:41:48,561 INFO ]: Interpolant automaton has 5 states [2018-06-22 04:41:48,561 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 04:41:48,561 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 04:41:48,562 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 04:41:48,874 WARN ]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 04:41:48,920 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:41:48,920 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 04:41:48,920 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:41:48,921 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 04:41:48,921 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:41:48,921 INFO ]: With dead ends: 11 [2018-06-22 04:41:48,921 INFO ]: Without dead ends: 11 [2018-06-22 04:41:48,922 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:41:48,922 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 04:41:48,923 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 04:41:48,923 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 04:41:48,924 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 04:41:48,924 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-22 04:41:48,924 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:41:48,924 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 04:41:48,924 INFO ]: Interpolant automaton has 5 states. [2018-06-22 04:41:48,924 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 04:41:48,924 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 04:41:48,924 INFO ]: Found error trace [2018-06-22 04:41:48,924 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:41:48,924 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:41:48,924 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-22 04:41:48,924 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:41:48,924 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:41:48,928 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:41:48,928 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:41:48,928 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:41:49,117 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:41:49,452 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:41:49,452 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:41:49,452 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 04:41:49,458 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:41:49,634 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:41:49,634 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:41:49,646 INFO ]: Computing forward predicates... [2018-06-22 04:41:51,477 WARN ]: Spent 754.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 20 [2018-06-22 04:41:52,357 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:41:52,378 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:41:52,378 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-22 04:41:52,378 INFO ]: Interpolant automaton has 9 states [2018-06-22 04:41:52,378 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 04:41:52,378 INFO ]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-06-22 04:41:52,378 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-22 04:41:52,713 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:41:52,714 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:41:52,714 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:41:52,714 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-22 04:41:52,714 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:41:52,714 INFO ]: With dead ends: 13 [2018-06-22 04:41:52,714 INFO ]: Without dead ends: 13 [2018-06-22 04:41:52,715 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-06-22 04:41:52,715 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:41:52,716 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:41:52,716 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:41:52,716 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:41:52,716 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 04:41:52,716 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:41:52,717 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:41:52,717 INFO ]: Interpolant automaton has 9 states. [2018-06-22 04:41:52,717 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:41:52,717 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:41:52,717 INFO ]: Found error trace [2018-06-22 04:41:52,717 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:41:52,717 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:41:52,717 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-22 04:41:52,717 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:41:52,717 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:41:52,718 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:41:52,718 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:41:52,718 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:41:52,956 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:41:53,740 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:41:53,740 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:41:53,740 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 04:41:53,752 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:41:54,008 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 04:41:54,008 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:41:54,027 INFO ]: Computing forward predicates... [2018-06-22 04:41:56,060 WARN ]: Spent 991.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 16 [2018-06-22 04:42:02,825 WARN ]: Spent 4.70 s on a formula simplification. DAG size of input: 359 DAG size of output: 159 [2018-06-22 04:42:13,103 WARN ]: Spent 5.23 s on a formula simplification. DAG size of input: 428 DAG size of output: 163 [2018-06-22 04:42:37,909 WARN ]: Simplifying disjunction of 15823 conjuctions. This might take some time... Received shutdown request... [2018-06-22 04:42:45,243 INFO ]: Timeout while computing interpolants [2018-06-22 04:42:45,443 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 04:42:45,443 WARN ]: Verification canceled [2018-06-22 04:42:45,447 WARN ]: Timeout [2018-06-22 04:42:45,447 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:42:45 BoogieIcfgContainer [2018-06-22 04:42:45,447 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 04:42:45,448 INFO ]: Toolchain (without parser) took 59261.22 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 238.7 MB in the beginning and 866.9 MB in the end (delta: -628.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-22 04:42:45,450 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 04:42:45,450 INFO ]: ChcToBoogie took 144.84 ms. Allocated memory is still 308.3 MB. Free memory was 238.7 MB in the beginning and 236.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:42:45,451 INFO ]: Boogie Preprocessor took 93.09 ms. Allocated memory is still 308.3 MB. Free memory was 236.8 MB in the beginning and 234.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 04:42:45,451 INFO ]: RCFGBuilder took 562.08 ms. Allocated memory is still 308.3 MB. Free memory was 234.8 MB in the beginning and 200.8 MB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 3.6 GB. [2018-06-22 04:42:45,452 INFO ]: TraceAbstraction took 58452.44 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 200.8 MB in the beginning and 866.9 MB in the end (delta: -666.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 3.6 GB. [2018-06-22 04:42:45,462 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 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 144.84 ms. Allocated memory is still 308.3 MB. Free memory was 238.7 MB in the beginning and 236.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 93.09 ms. Allocated memory is still 308.3 MB. Free memory was 236.8 MB in the beginning and 234.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 562.08 ms. Allocated memory is still 308.3 MB. Free memory was 234.8 MB in the beginning and 200.8 MB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 3.6 GB. * TraceAbstraction took 58452.44 ms. Allocated memory was 308.3 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 200.8 MB in the beginning and 866.9 MB in the end (delta: -666.0 MB). Peak memory consumption was 1.2 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 13 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 15823 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 58.3s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 2 SDslu, 48 SDs, 0 SdLazy, 22 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 1002 SizeOfPredicates, 5 NumberOfNonLiveVariables, 750 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/14 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_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_04-42-45-475.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/s3_srvr_7.cil.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_04-42-45-475.csv Completed graceful shutdown