java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:41:18,743 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:41:18,744 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:41:18,755 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:41:18,756 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:41:18,757 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:41:18,759 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:41:18,761 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:41:18,762 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:41:18,763 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:41:18,764 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:41:18,764 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:41:18,765 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:41:18,769 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:41:18,769 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:41:18,770 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:41:18,782 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:41:18,784 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:41:18,785 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:41:18,786 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:41:18,787 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:41:18,789 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:41:18,789 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:41:18,789 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:41:18,790 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:41:18,795 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:41:18,796 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:41:18,797 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:41:18,798 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:41:18,798 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:41:18,801 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:41:18,802 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:41:18,802 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:41:18,803 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:41:18,803 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:41:18,804 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 14:41:18,822 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:41:18,822 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:41:18,822 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:41:18,822 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:41:18,823 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:41:18,824 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:41:18,824 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:41:18,824 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:41:18,824 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:41:18,825 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:41:18,825 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:41:18,825 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:41:18,825 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:41:18,825 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:41:18,826 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:41:18,826 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:41:18,826 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:41:18,826 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:41:18,826 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:41:18,828 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:41:18,828 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:41:18,878 INFO ]: Repository-Root is: /tmp [2018-06-22 14:41:18,893 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:41:18,899 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:41:18,901 INFO ]: Initializing SmtParser... [2018-06-22 14:41:18,901 INFO ]: SmtParser initialized [2018-06-22 14:41:18,902 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.4.smt2 [2018-06-22 14:41:18,903 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-22 14:41:18,994 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.4.smt2 unknown [2018-06-22 14:41:20,242 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.4.smt2 [2018-06-22 14:41:20,247 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:41:20,252 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:41:20,253 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:41:20,253 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:41:20,253 INFO ]: ChcToBoogie initialized [2018-06-22 14:41:20,256 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:41:20" (1/1) ... [2018-06-22 14:41:20,329 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:41:20 Unit [2018-06-22 14:41:20,330 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:41:20,330 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:41:20,330 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:41:20,330 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:41:20,363 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:41:20" (1/1) ... [2018-06-22 14:41:20,363 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:41:20" (1/1) ... [2018-06-22 14:41:20,392 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:41:20" (1/1) ... [2018-06-22 14:41:20,392 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:41:20" (1/1) ... [2018-06-22 14:41:20,416 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:41:20" (1/1) ... [2018-06-22 14:41:20,417 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:41:20" (1/1) ... [2018-06-22 14:41:20,430 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:41:20" (1/1) ... [2018-06-22 14:41:20,438 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:41:20,439 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:41:20,439 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:41:20,439 INFO ]: RCFGBuilder initialized [2018-06-22 14:41:20,439 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:41:20" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 14:41:20,449 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:41:20,450 INFO ]: Found specification of procedure False [2018-06-22 14:41:20,450 INFO ]: Found implementation of procedure False [2018-06-22 14:41:20,450 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:41:20,450 INFO ]: Found specification of procedure state [2018-06-22 14:41:20,450 INFO ]: Found implementation of procedure state [2018-06-22 14:41:20,450 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:41:20,450 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:41:20,450 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:41:21,217 INFO ]: Using library mode [2018-06-22 14:41:21,218 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:41:21 BoogieIcfgContainer [2018-06-22 14:41:21,218 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:41:21,220 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:41:21,220 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:41:21,223 INFO ]: TraceAbstraction initialized [2018-06-22 14:41:21,224 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:41:20" (1/3) ... [2018-06-22 14:41:21,224 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdde7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:41:21, skipping insertion in model container [2018-06-22 14:41:21,224 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:41:20" (2/3) ... [2018-06-22 14:41:21,225 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdde7f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:41:21, skipping insertion in model container [2018-06-22 14:41:21,225 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:41:21" (3/3) ... [2018-06-22 14:41:21,227 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:41:21,237 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:41:21,247 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:41:21,297 INFO ]: Using default assertion order modulation [2018-06-22 14:41:21,298 INFO ]: Interprodecural is true [2018-06-22 14:41:21,298 INFO ]: Hoare is false [2018-06-22 14:41:21,298 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:41:21,298 INFO ]: Backedges is TWOTRACK [2018-06-22 14:41:21,298 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:41:21,298 INFO ]: Difference is false [2018-06-22 14:41:21,298 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:41:21,298 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:41:21,313 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:41:21,324 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:41:21,324 INFO ]: Found error trace [2018-06-22 14:41:21,325 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:41:21,325 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:41:21,330 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 14:41:21,332 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:41:21,333 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:41:21,370 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:41:21,370 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:41:21,370 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:41:21,448 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:41:21,654 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:41:21,657 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:41:21,657 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:41:21,659 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:41:21,676 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:41:21,677 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:41:21,679 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:41:21,878 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:41:21,878 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:41:21,880 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:41:21,881 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:41:21,881 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:41:21,895 INFO ]: With dead ends: 13 [2018-06-22 14:41:21,895 INFO ]: Without dead ends: 13 [2018-06-22 14:41:21,897 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:41:21,915 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:41:21,951 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:41:21,952 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:41:21,953 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:41:21,954 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:41:21,954 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:41:21,954 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:41:21,954 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:41:21,954 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:41:21,955 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:41:21,955 INFO ]: Found error trace [2018-06-22 14:41:21,956 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:41:21,956 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:41:21,956 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 14:41:21,956 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:41:21,956 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:41:21,957 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:41:21,957 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:41:21,957 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:41:22,189 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:41:22,683 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:41:22,683 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:41:22,683 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:41:22,693 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:41:22,896 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:41:22,915 INFO ]: Computing forward predicates... [2018-06-22 14:41:24,334 WARN ]: Spent 188.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-06-22 14:41:24,465 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:41:24,503 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:41:24,503 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 14:41:24,503 INFO ]: Interpolant automaton has 10 states [2018-06-22 14:41:24,504 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 14:41:24,504 INFO ]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:41:24,504 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2018-06-22 14:41:24,868 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:41:24,868 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:41:24,868 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:41:24,868 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 14:41:24,869 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:41:24,869 INFO ]: With dead ends: 15 [2018-06-22 14:41:24,869 INFO ]: Without dead ends: 15 [2018-06-22 14:41:24,870 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2018-06-22 14:41:24,870 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:41:24,872 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:41:24,872 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:41:24,873 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:41:24,873 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:41:24,873 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:41:24,873 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:41:24,873 INFO ]: Interpolant automaton has 10 states. [2018-06-22 14:41:24,873 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:41:24,874 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:41:24,874 INFO ]: Found error trace [2018-06-22 14:41:24,874 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:41:24,874 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:41:24,874 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 14:41:24,874 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:41:24,874 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:41:24,875 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:41:24,875 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:41:24,875 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:41:25,091 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:41:25,714 WARN ]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 14:41:25,930 WARN ]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:41:25,977 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:41:25,977 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:41:25,977 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:41:25,985 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:41:26,212 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:41:26,212 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:41:26,230 INFO ]: Computing forward predicates... [2018-06-22 14:41:27,385 WARN ]: Spent 221.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 24 [2018-06-22 14:41:27,996 WARN ]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 14:41:28,012 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:41:28,047 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:41:28,047 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 14:41:28,048 INFO ]: Interpolant automaton has 13 states [2018-06-22 14:41:28,048 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 14:41:28,048 INFO ]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:41:28,048 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 14:41:28,459 WARN ]: Spent 327.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2018-06-22 14:41:28,839 WARN ]: Spent 237.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2018-06-22 14:41:28,930 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:41:28,930 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 14:41:28,931 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 14:41:28,931 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 14:41:28,931 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:41:28,931 INFO ]: With dead ends: 17 [2018-06-22 14:41:28,932 INFO ]: Without dead ends: 17 [2018-06-22 14:41:28,934 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2018-06-22 14:41:28,934 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 14:41:28,936 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 14:41:28,936 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 14:41:28,938 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 14:41:28,940 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 14:41:28,940 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:41:28,941 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 14:41:28,941 INFO ]: Interpolant automaton has 13 states. [2018-06-22 14:41:28,941 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 14:41:28,941 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 14:41:28,941 INFO ]: Found error trace [2018-06-22 14:41:28,941 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:41:28,941 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:41:28,941 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 14:41:28,941 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:41:28,941 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:41:28,942 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:41:28,942 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:41:28,942 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:41:29,220 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:41:29,878 WARN ]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 14:41:30,010 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:41:30,010 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:41:30,010 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:41:30,027 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 14:41:30,287 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 14:41:30,287 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:41:30,307 INFO ]: Computing forward predicates... [2018-06-22 14:41:32,160 WARN ]: Spent 896.00 ms on a formula simplification. DAG size of input: 15 DAG size of output: 12 [2018-06-22 14:41:33,458 WARN ]: Spent 478.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 13 [2018-06-22 14:41:35,904 WARN ]: Spent 1.69 s on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2018-06-22 14:41:36,039 INFO ]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 14:41:36,063 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:41:36,063 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-06-22 14:41:36,063 INFO ]: Interpolant automaton has 17 states [2018-06-22 14:41:36,063 INFO ]: Constructing interpolant automaton starting with 17 interpolants. [2018-06-22 14:41:36,063 INFO ]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-06-22 14:41:36,064 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 17 states. [2018-06-22 14:41:36,564 WARN ]: Spent 420.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2018-06-22 14:41:36,957 WARN ]: Spent 239.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 29 [2018-06-22 14:41:37,252 WARN ]: Spent 265.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2018-06-22 14:41:37,675 WARN ]: Spent 396.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2018-06-22 14:41:37,727 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:41:37,743 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:41:37,743 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:41:37,744 INFO ]: Start accepts. Automaton has 17 states. Word has length 21 [2018-06-22 14:41:37,744 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:41:37,744 INFO ]: With dead ends: 21 [2018-06-22 14:41:37,744 INFO ]: Without dead ends: 21 [2018-06-22 14:41:37,745 INFO ]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2018-06-22 14:41:37,745 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:41:37,750 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:41:37,750 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:41:37,750 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:41:37,750 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 21 [2018-06-22 14:41:37,751 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:41:37,751 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:41:37,751 INFO ]: Interpolant automaton has 17 states. [2018-06-22 14:41:37,751 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:41:37,751 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:41:37,751 INFO ]: Found error trace [2018-06-22 14:41:37,752 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:41:37,752 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:41:37,752 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 4 times [2018-06-22 14:41:37,752 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:41:37,752 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:41:37,753 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:41:37,753 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:41:37,753 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:41:38,126 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:41:39,035 WARN ]: Spent 191.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 10 [2018-06-22 14:41:39,327 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:41:39,327 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:41:39,327 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:41:39,333 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown