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.10.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:37:20,714 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:37:20,716 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:37:20,730 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:37:20,730 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:37:20,731 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:37:20,732 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:37:20,734 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:37:20,736 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:37:20,736 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:37:20,737 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:37:20,737 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:37:20,740 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:37:20,741 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:37:20,741 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:37:20,742 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:37:20,746 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:37:20,748 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:37:20,762 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:37:20,763 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:37:20,764 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:37:20,766 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:37:20,766 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:37:20,767 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:37:20,767 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:37:20,768 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:37:20,769 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:37:20,769 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:37:20,772 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:37:20,773 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:37:20,773 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:37:20,774 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:37:20,774 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:37:20,775 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:37:20,775 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:37:20,776 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 14:37:20,789 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:37:20,789 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:37:20,789 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:37:20,790 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:37:20,791 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:37:20,791 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:37:20,791 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:37:20,791 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:37:20,792 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:37:20,792 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:37:20,792 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:37:20,792 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:37:20,792 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:37:20,793 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:37:20,793 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:37:20,793 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:37:20,793 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:37:20,793 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:37:20,794 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:37:20,795 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:37:20,795 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:37:20,849 INFO ]: Repository-Root is: /tmp [2018-06-22 14:37:20,865 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:37:20,868 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:37:20,870 INFO ]: Initializing SmtParser... [2018-06-22 14:37:20,870 INFO ]: SmtParser initialized [2018-06-22 14:37:20,871 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.10.smt2 [2018-06-22 14:37:20,872 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 14:37:20,952 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.10.smt2 unknown [2018-06-22 14:37:25,193 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.10.smt2 [2018-06-22 14:37:25,198 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:37:25,204 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:37:25,204 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:37:25,204 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:37:25,204 INFO ]: ChcToBoogie initialized [2018-06-22 14:37:25,208 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:37:25" (1/1) ... [2018-06-22 14:37:25,344 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:37:25 Unit [2018-06-22 14:37:25,344 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:37:25,345 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:37:25,345 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:37:25,345 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:37:25,375 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:37:25" (1/1) ... [2018-06-22 14:37:25,375 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:37:25" (1/1) ... [2018-06-22 14:37:25,438 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:37:25" (1/1) ... [2018-06-22 14:37:25,616 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:37:25" (1/1) ... [2018-06-22 14:37:25,663 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:37:25" (1/1) ... [2018-06-22 14:37:25,667 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:37:25" (1/1) ... [2018-06-22 14:37:25,692 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:37:25" (1/1) ... [2018-06-22 14:37:25,721 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:37:25,721 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:37:25,721 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:37:25,721 INFO ]: RCFGBuilder initialized [2018-06-22 14:37:25,725 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:37:25" (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 14:37:25,736 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:37:25,736 INFO ]: Found specification of procedure False [2018-06-22 14:37:25,736 INFO ]: Found implementation of procedure False [2018-06-22 14:37:25,736 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:37:25,736 INFO ]: Found specification of procedure state [2018-06-22 14:37:25,736 INFO ]: Found implementation of procedure state [2018-06-22 14:37:25,736 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:37:25,736 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:37:25,736 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 14:37:28,767 INFO ]: Using library mode [2018-06-22 14:37:28,769 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:37:28 BoogieIcfgContainer [2018-06-22 14:37:28,769 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:37:28,770 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:37:28,770 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:37:28,775 INFO ]: TraceAbstraction initialized [2018-06-22 14:37:28,775 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:37:25" (1/3) ... [2018-06-22 14:37:28,776 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cee4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:37:28, skipping insertion in model container [2018-06-22 14:37:28,776 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:37:25" (2/3) ... [2018-06-22 14:37:28,776 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cee4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:37:28, skipping insertion in model container [2018-06-22 14:37:28,776 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:37:28" (3/3) ... [2018-06-22 14:37:28,778 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:37:28,789 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:37:28,797 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:37:28,859 INFO ]: Using default assertion order modulation [2018-06-22 14:37:28,859 INFO ]: Interprodecural is true [2018-06-22 14:37:28,859 INFO ]: Hoare is false [2018-06-22 14:37:28,859 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:37:28,859 INFO ]: Backedges is TWOTRACK [2018-06-22 14:37:28,859 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:37:28,859 INFO ]: Difference is false [2018-06-22 14:37:28,859 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:37:28,859 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:37:28,872 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:37:28,881 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:37:28,881 INFO ]: Found error trace [2018-06-22 14:37:28,882 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:37:28,882 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:37:28,886 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 14:37:28,887 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:37:28,887 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:37:28,920 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:37:28,920 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:37:28,920 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:37:29,091 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:37:29,343 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:37:29,345 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:37:29,345 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:37:29,346 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:37:29,357 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:37:29,357 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:37:29,359 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:37:29,730 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:37:29,731 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:37:29,732 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:37:29,733 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:37:29,734 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:37:29,744 INFO ]: With dead ends: 13 [2018-06-22 14:37:29,744 INFO ]: Without dead ends: 13 [2018-06-22 14:37:29,745 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 14:37:29,762 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:37:29,800 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:37:29,801 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:37:29,801 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:37:29,803 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:37:29,803 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:37:29,803 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:37:29,803 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:37:29,803 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:37:29,805 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:37:29,805 INFO ]: Found error trace [2018-06-22 14:37:29,805 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:37:29,805 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:37:29,805 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 14:37:29,805 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:37:29,805 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:37:29,806 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:37:29,806 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:37:29,806 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:37:30,592 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:37:31,601 WARN ]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:37:31,851 WARN ]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 14:37:32,252 WARN ]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 14:37:32,254 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:37:32,254 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:37:32,254 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 14:37:32,271 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:37:32,820 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:37:32,884 INFO ]: Computing forward predicates... [2018-06-22 14:37:38,168 WARN ]: Spent 477.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 13 [2018-06-22 14:37:38,640 WARN ]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 14:37:38,660 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:37:38,685 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:37:38,686 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 14:37:38,686 INFO ]: Interpolant automaton has 10 states [2018-06-22 14:37:38,686 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 14:37:38,686 INFO ]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:37:38,687 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2018-06-22 14:37:39,116 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:37:39,116 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:37:39,118 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:37:39,118 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 14:37:39,118 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:37:39,119 INFO ]: With dead ends: 15 [2018-06-22 14:37:39,119 INFO ]: Without dead ends: 15 [2018-06-22 14:37:39,120 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:37:39,120 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:37:39,122 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:37:39,123 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:37:39,123 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:37:39,123 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:37:39,123 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:37:39,123 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:37:39,123 INFO ]: Interpolant automaton has 10 states. [2018-06-22 14:37:39,123 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:37:39,125 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:37:39,125 INFO ]: Found error trace [2018-06-22 14:37:39,125 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:37:39,125 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:37:39,125 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 14:37:39,125 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:37:39,125 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:37:39,126 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:37:39,126 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:37:39,126 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:37:40,037 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:37:41,391 WARN ]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-22 14:37:41,393 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:37:41,393 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:37:41,393 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 14:37:41,403 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:37:42,147 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:37:42,147 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:37:42,213 INFO ]: Computing forward predicates... [2018-06-22 14:37:47,551 WARN ]: Spent 778.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 24 [2018-06-22 14:37:47,639 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:37:47,666 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:37:47,666 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 14:37:47,667 INFO ]: Interpolant automaton has 13 states [2018-06-22 14:37:47,667 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 14:37:47,668 INFO ]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:37:47,668 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 14:37:48,328 WARN ]: Spent 185.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-06-22 14:37:48,537 WARN ]: Spent 151.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2018-06-22 14:37:48,810 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:37:48,811 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:37:48,812 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:37:48,812 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 14:37:48,812 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:37:48,813 INFO ]: With dead ends: 21 [2018-06-22 14:37:48,813 INFO ]: Without dead ends: 21 [2018-06-22 14:37:48,813 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2018-06-22 14:37:48,813 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:37:48,816 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:37:48,816 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:37:48,817 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:37:48,817 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2018-06-22 14:37:48,817 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:37:48,817 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:37:48,817 INFO ]: Interpolant automaton has 13 states. [2018-06-22 14:37:48,817 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:37:48,818 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:37:48,818 INFO ]: Found error trace [2018-06-22 14:37:48,818 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:37:48,818 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:37:48,819 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 3 times [2018-06-22 14:37:48,819 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:37:48,819 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:37:48,820 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:37:48,820 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:37:48,820 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:37:50,024 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:37:52,703 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:37:52,703 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:37:52,703 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) [2018-06-22 14:37:52,720 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 14:37:56,321 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-06-22 14:37:56,321 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:37:56,457 INFO ]: Computing forward predicates... [2018-06-22 14:37:59,802 WARN ]: Spent 197.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 22 [2018-06-22 14:38:02,706 WARN ]: Spent 1.40 s on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2018-06-22 14:38:06,694 WARN ]: Spent 2.32 s on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2018-06-22 14:38:08,263 INFO ]: Checked inductivity of 55 backedges. 7 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2018-06-22 14:38:08,308 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:38:08,308 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2018-06-22 14:38:08,309 INFO ]: Interpolant automaton has 24 states [2018-06-22 14:38:08,309 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 14:38:08,309 INFO ]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2018-06-22 14:38:08,309 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 24 states. [2018-06-22 14:38:10,463 WARN ]: Spent 1.97 s on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2018-06-22 14:38:10,771 WARN ]: Spent 182.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 36 [2018-06-22 14:38:10,964 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 34 [2018-06-22 14:38:11,267 WARN ]: Spent 234.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 41 [2018-06-22 14:38:12,337 WARN ]: Spent 1.00 s on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2018-06-22 14:38:13,959 WARN ]: Spent 1.54 s on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2018-06-22 14:38:16,498 WARN ]: Spent 2.39 s on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2018-06-22 14:38:16,628 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:38:16,628 INFO ]: Finished difference Result 25 states and 26 transitions. [2018-06-22 14:38:16,630 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 14:38:16,630 INFO ]: Start accepts. Automaton has 24 states. Word has length 29 [2018-06-22 14:38:16,630 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:38:16,631 INFO ]: With dead ends: 25 [2018-06-22 14:38:16,631 INFO ]: Without dead ends: 25 [2018-06-22 14:38:16,632 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2018-06-22 14:38:16,632 INFO ]: Start minimizeSevpa. Operand 25 states. [2018-06-22 14:38:16,635 INFO ]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-06-22 14:38:16,635 INFO ]: Start removeUnreachable. Operand 25 states. [2018-06-22 14:38:16,636 INFO ]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2018-06-22 14:38:16,636 INFO ]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 29 [2018-06-22 14:38:16,636 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:38:16,636 INFO ]: Abstraction has 25 states and 26 transitions. [2018-06-22 14:38:16,636 INFO ]: Interpolant automaton has 24 states. [2018-06-22 14:38:16,636 INFO ]: Start isEmpty. Operand 25 states and 26 transitions. [2018-06-22 14:38:16,637 INFO ]: Finished isEmpty. Found accepting run of length 38 [2018-06-22 14:38:16,637 INFO ]: Found error trace [2018-06-22 14:38:16,637 INFO ]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:38:16,637 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:38:16,638 INFO ]: Analyzing trace with hash -411423458, now seen corresponding path program 4 times [2018-06-22 14:38:16,638 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:38:16,638 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:38:16,638 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:38:16,638 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:38:16,638 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY Received shutdown request... [2018-06-22 14:38:17,537 INFO ]: Conjunction of SSA is unknown [2018-06-22 14:38:17,563 INFO ]: Advancing trace checker [2018-06-22 14:38:17,563 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 14:38:17,572 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Cannot interrupt operation gracefully because timeout expired. Forcing shutdown