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/transmitter.1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 04:59:04,575 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 04:59:04,577 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 04:59:04,594 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 04:59:04,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 04:59:04,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 04:59:04,596 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 04:59:04,600 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 04:59:04,602 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 04:59:04,603 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 04:59:04,604 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 04:59:04,604 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 04:59:04,605 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 04:59:04,606 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 04:59:04,606 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 04:59:04,607 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 04:59:04,609 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 04:59:04,611 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 04:59:04,613 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 04:59:04,614 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 04:59:04,615 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 04:59:04,617 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 04:59:04,618 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 04:59:04,618 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 04:59:04,619 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 04:59:04,620 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 04:59:04,621 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 04:59:04,621 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 04:59:04,623 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 04:59:04,623 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 04:59:04,624 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 04:59:04,624 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 04:59:04,625 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 04:59:04,625 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 04:59:04,626 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 04:59:04,626 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 04:59:04,639 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 04:59:04,640 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 04:59:04,640 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 04:59:04,640 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 04:59:04,641 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 04:59:04,642 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 04:59:04,642 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 04:59:04,642 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 04:59:04,642 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 04:59:04,642 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 04:59:04,643 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 04:59:04,643 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 04:59:04,643 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 04:59:04,643 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 04:59:04,643 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 04:59:04,644 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 04:59:04,644 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 04:59:04,645 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 04:59:04,645 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 04:59:04,696 INFO ]: Repository-Root is: /tmp [2018-06-22 04:59:04,713 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 04:59:04,721 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 04:59:04,722 INFO ]: Initializing SmtParser... [2018-06-22 04:59:04,723 INFO ]: SmtParser initialized [2018-06-22 04:59:04,723 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.1.smt2 [2018-06-22 04:59:04,725 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 04:59:04,820 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.1.smt2 unknown [2018-06-22 04:59:05,280 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.1.smt2 [2018-06-22 04:59:05,285 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 04:59:05,291 INFO ]: Walking toolchain with 4 elements. [2018-06-22 04:59:05,292 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 04:59:05,292 INFO ]: Initializing ChcToBoogie... [2018-06-22 04:59:05,292 INFO ]: ChcToBoogie initialized [2018-06-22 04:59:05,295 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:59:05" (1/1) ... [2018-06-22 04:59:05,370 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:05 Unit [2018-06-22 04:59:05,371 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 04:59:05,371 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 04:59:05,371 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 04:59:05,371 INFO ]: Boogie Preprocessor initialized [2018-06-22 04:59:05,393 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:05" (1/1) ... [2018-06-22 04:59:05,393 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:05" (1/1) ... [2018-06-22 04:59:05,415 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:05" (1/1) ... [2018-06-22 04:59:05,416 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:05" (1/1) ... [2018-06-22 04:59:05,430 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:05" (1/1) ... [2018-06-22 04:59:05,431 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:05" (1/1) ... [2018-06-22 04:59:05,443 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:05" (1/1) ... [2018-06-22 04:59:05,447 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 04:59:05,448 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 04:59:05,448 INFO ]: Initializing RCFGBuilder... [2018-06-22 04:59:05,448 INFO ]: RCFGBuilder initialized [2018-06-22 04:59:05,449 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:05" (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 04:59:05,483 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 04:59:05,483 INFO ]: Found specification of procedure gotoProc [2018-06-22 04:59:05,483 INFO ]: Found implementation of procedure gotoProc [2018-06-22 04:59:05,483 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 04:59:05,483 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 04:59:05,484 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 04:59:05,904 INFO ]: Using library mode [2018-06-22 04:59:05,904 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:59:05 BoogieIcfgContainer [2018-06-22 04:59:05,904 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 04:59:05,906 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 04:59:05,906 INFO ]: Initializing TraceAbstraction... [2018-06-22 04:59:05,915 INFO ]: TraceAbstraction initialized [2018-06-22 04:59:05,915 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:59:05" (1/3) ... [2018-06-22 04:59:05,916 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d7bc12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:59:05, skipping insertion in model container [2018-06-22 04:59:05,916 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:59:05" (2/3) ... [2018-06-22 04:59:05,916 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d7bc12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:59:05, skipping insertion in model container [2018-06-22 04:59:05,916 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:59:05" (3/3) ... [2018-06-22 04:59:05,918 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 04:59:05,929 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 04:59:05,938 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 04:59:05,998 INFO ]: Using default assertion order modulation [2018-06-22 04:59:05,999 INFO ]: Interprodecural is true [2018-06-22 04:59:05,999 INFO ]: Hoare is false [2018-06-22 04:59:05,999 INFO ]: Compute interpolants for FPandBP [2018-06-22 04:59:05,999 INFO ]: Backedges is TWOTRACK [2018-06-22 04:59:05,999 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 04:59:05,999 INFO ]: Difference is false [2018-06-22 04:59:05,999 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 04:59:05,999 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 04:59:06,022 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 04:59:06,033 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 04:59:06,034 INFO ]: Found error trace [2018-06-22 04:59:06,034 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:59:06,035 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:59:06,040 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 04:59:06,041 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:59:06,041 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:59:06,074 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:06,074 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:59:06,074 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:06,150 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:06,297 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:06,300 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 04:59:06,300 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 04:59:06,302 INFO ]: Interpolant automaton has 3 states [2018-06-22 04:59:06,315 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 04:59:06,316 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 04:59:06,318 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 04:59:06,391 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:59:06,393 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 04:59:06,394 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 04:59:06,395 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 04:59:06,395 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:59:06,410 INFO ]: With dead ends: 9 [2018-06-22 04:59:06,410 INFO ]: Without dead ends: 9 [2018-06-22 04:59:06,412 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 04:59:06,428 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 04:59:06,452 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 04:59:06,452 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 04:59:06,453 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 04:59:06,454 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 04:59:06,454 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:59:06,454 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 04:59:06,454 INFO ]: Interpolant automaton has 3 states. [2018-06-22 04:59:06,454 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 04:59:06,455 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 04:59:06,455 INFO ]: Found error trace [2018-06-22 04:59:06,455 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:59:06,455 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:59:06,455 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 04:59:06,455 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:59:06,455 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:59:06,457 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:06,457 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:59:06,457 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:06,554 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:06,765 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:06,765 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:59:06,765 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 04:59:06,772 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:59:06,874 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:06,886 INFO ]: Computing forward predicates... [2018-06-22 04:59:07,136 WARN ]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 04:59:07,552 WARN ]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 04:59:07,568 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:07,605 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:59:07,605 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-22 04:59:07,606 INFO ]: Interpolant automaton has 6 states [2018-06-22 04:59:07,606 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 04:59:07,606 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 04:59:07,606 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-22 04:59:07,974 WARN ]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 04:59:07,991 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:59:07,991 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 04:59:07,991 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 04:59:07,991 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-22 04:59:07,991 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:59:07,992 INFO ]: With dead ends: 10 [2018-06-22 04:59:07,992 INFO ]: Without dead ends: 10 [2018-06-22 04:59:07,993 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-22 04:59:07,993 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 04:59:07,994 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 04:59:07,994 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 04:59:07,994 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 04:59:07,994 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 04:59:07,994 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:59:07,994 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 04:59:07,994 INFO ]: Interpolant automaton has 6 states. [2018-06-22 04:59:07,994 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 04:59:07,995 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 04:59:07,995 INFO ]: Found error trace [2018-06-22 04:59:07,995 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:59:07,995 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:59:07,995 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 04:59:07,995 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:59:07,995 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:59:07,996 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:07,996 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 04:59:07,996 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:08,077 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:08,236 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:08,236 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:59:08,236 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 04:59:08,242 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 04:59:08,377 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 04:59:08,377 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:08,387 INFO ]: Computing forward predicates... [2018-06-22 04:59:09,782 WARN ]: Spent 487.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-06-22 04:59:09,803 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:09,830 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:59:09,830 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-06-22 04:59:09,830 INFO ]: Interpolant automaton has 8 states [2018-06-22 04:59:09,830 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 04:59:09,830 INFO ]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-06-22 04:59:09,830 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 8 states. [2018-06-22 04:59:09,998 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:59:09,998 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 04:59:09,999 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 04:59:09,999 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-22 04:59:09,999 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:59:09,999 INFO ]: With dead ends: 13 [2018-06-22 04:59:09,999 INFO ]: Without dead ends: 13 [2018-06-22 04:59:10,000 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-06-22 04:59:10,000 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 04:59:10,001 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 04:59:10,001 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 04:59:10,001 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 04:59:10,001 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2018-06-22 04:59:10,001 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:59:10,001 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 04:59:10,001 INFO ]: Interpolant automaton has 8 states. [2018-06-22 04:59:10,001 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 04:59:10,001 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 04:59:10,001 INFO ]: Found error trace [2018-06-22 04:59:10,001 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:59:10,001 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:59:10,002 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 3 times [2018-06-22 04:59:10,002 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:59:10,002 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:59:10,002 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:10,002 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:59:10,002 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:10,146 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:10,560 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:10,560 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:59:10,560 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 04:59:10,574 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 04:59:10,799 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 04:59:10,799 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:10,816 INFO ]: Computing forward predicates... [2018-06-22 04:59:11,550 WARN ]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 04:59:12,929 WARN ]: Spent 173.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2018-06-22 04:59:13,278 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:13,301 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 04:59:13,301 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 04:59:13,301 INFO ]: Interpolant automaton has 13 states [2018-06-22 04:59:13,301 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 04:59:13,302 INFO ]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2018-06-22 04:59:13,302 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2018-06-22 04:59:13,527 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 04:59:13,527 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 04:59:13,528 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 04:59:13,528 INFO ]: Start accepts. Automaton has 13 states. Word has length 12 [2018-06-22 04:59:13,528 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 04:59:13,528 INFO ]: With dead ends: 15 [2018-06-22 04:59:13,528 INFO ]: Without dead ends: 15 [2018-06-22 04:59:13,529 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2018-06-22 04:59:13,529 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 04:59:13,530 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 04:59:13,531 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 04:59:13,531 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 04:59:13,531 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2018-06-22 04:59:13,531 INFO ]: Finished accepts. word is rejected. [2018-06-22 04:59:13,531 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 04:59:13,531 INFO ]: Interpolant automaton has 13 states. [2018-06-22 04:59:13,531 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 04:59:13,532 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 04:59:13,532 INFO ]: Found error trace [2018-06-22 04:59:13,532 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 04:59:13,533 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 04:59:13,533 INFO ]: Analyzing trace with hash -414382217, now seen corresponding path program 4 times [2018-06-22 04:59:13,533 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 04:59:13,533 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 04:59:13,533 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:13,533 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 04:59:13,533 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 04:59:13,678 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:14,354 WARN ]: Spent 250.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 10 [2018-06-22 04:59:14,631 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 04:59:14,631 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 04:59:14,631 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 04:59:14,639 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 04:59:22,374 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 04:59:22,374 INFO ]: Conjunction of SSA is unsat [2018-06-22 04:59:22,391 INFO ]: Computing forward predicates... [2018-06-22 04:59:33,760 WARN ]: Simplifying disjunction of 6804 conjuctions. This might take some time... [2018-06-22 04:59:40,005 INFO ]: Simplified to disjunction of 6804 conjuctions. [2018-06-22 04:59:40,080 WARN ]: Simplifying disjunction of 6804 conjuctions. This might take some time... [2018-06-22 04:59:46,479 INFO ]: Simplified to disjunction of 6804 conjuctions. [2018-06-22 04:59:46,594 WARN ]: Simplifying disjunction of 13608 conjuctions. This might take some time... Received shutdown request... [2018-06-22 05:00:18,200 INFO ]: Timeout while computing interpolants [2018-06-22 05:00:18,482 WARN ]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 05:00:18,482 WARN ]: Verification canceled [2018-06-22 05:00:18,485 WARN ]: Timeout [2018-06-22 05:00:18,486 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 05:00:18 BoogieIcfgContainer [2018-06-22 05:00:18,486 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 05:00:18,486 INFO ]: Toolchain (without parser) took 73200.61 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 998.2 MB). Free memory was 246.8 MB in the beginning and 629.2 MB in the end (delta: -382.5 MB). Peak memory consumption was 989.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:00:18,487 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 05:00:18,487 INFO ]: ChcToBoogie took 79.18 ms. Allocated memory is still 309.3 MB. Free memory was 245.7 MB in the beginning and 243.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:00:18,488 INFO ]: Boogie Preprocessor took 75.83 ms. Allocated memory is still 309.3 MB. Free memory was 243.7 MB in the beginning and 241.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:00:18,488 INFO ]: RCFGBuilder took 456.80 ms. Allocated memory is still 309.3 MB. Free memory was 241.8 MB in the beginning and 214.7 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:00:18,488 INFO ]: TraceAbstraction took 72579.47 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 998.2 MB). Free memory was 213.8 MB in the beginning and 629.2 MB in the end (delta: -415.5 MB). Peak memory consumption was 956.0 MB. Max. memory is 3.6 GB. [2018-06-22 05:00:18,491 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 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 79.18 ms. Allocated memory is still 309.3 MB. Free memory was 245.7 MB in the beginning and 243.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 75.83 ms. Allocated memory is still 309.3 MB. Free memory was 243.7 MB in the beginning and 241.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 456.80 ms. Allocated memory is still 309.3 MB. Free memory was 241.8 MB in the beginning and 214.7 MB in the end (delta: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 72579.47 ms. Allocated memory was 309.3 MB in the beginning and 1.3 GB in the end (delta: 998.2 MB). Free memory was 213.8 MB in the beginning and 629.2 MB in the end (delta: -415.5 MB). Peak memory consumption was 956.0 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 15 with TraceHistMax 7, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 13608 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 72.5s OverallTime, 5 OverallIterations, 7 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 28 SDtfs, 3 SDslu, 77 SDs, 0 SdLazy, 32 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 5.5s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 2903 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1353 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/38 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/transmitter.1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_05-00-18-501.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/transmitter.1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_05-00-18-501.csv Completed graceful shutdown