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.8.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 14:43:54,878 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 14:43:54,880 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 14:43:54,893 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 14:43:54,894 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 14:43:54,895 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 14:43:54,896 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 14:43:54,898 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 14:43:54,899 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 14:43:54,900 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 14:43:54,902 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 14:43:54,902 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 14:43:54,903 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 14:43:54,906 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 14:43:54,907 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 14:43:54,908 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 14:43:54,910 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 14:43:54,911 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 14:43:54,913 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 14:43:54,914 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 14:43:54,915 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 14:43:54,917 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 14:43:54,918 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 14:43:54,918 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 14:43:54,919 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 14:43:54,919 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 14:43:54,920 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 14:43:54,921 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 14:43:54,922 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 14:43:54,922 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 14:43:54,923 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 14:43:54,923 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 14:43:54,924 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 14:43:54,925 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 14:43:54,925 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 14:43:54,926 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 14:43:54,939 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 14:43:54,939 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 14:43:54,939 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 14:43:54,940 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 14:43:54,941 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 14:43:54,941 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 14:43:54,941 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 14:43:54,941 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 14:43:54,941 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 14:43:54,942 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 14:43:54,942 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 14:43:54,942 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 14:43:54,942 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 14:43:54,942 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 14:43:54,942 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 14:43:54,943 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 14:43:54,943 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 14:43:54,943 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 14:43:54,943 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 14:43:54,944 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 14:43:54,945 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 14:43:54,981 INFO ]: Repository-Root is: /tmp [2018-06-22 14:43:54,994 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 14:43:54,997 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 14:43:54,998 INFO ]: Initializing SmtParser... [2018-06-22 14:43:54,999 INFO ]: SmtParser initialized [2018-06-22 14:43:54,999 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.8.smt2 [2018-06-22 14:43:55,001 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 14:43:55,097 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.8.smt2 unknown [2018-06-22 14:43:58,364 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.8.smt2 [2018-06-22 14:43:58,375 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 14:43:58,381 INFO ]: Walking toolchain with 4 elements. [2018-06-22 14:43:58,382 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 14:43:58,382 INFO ]: Initializing ChcToBoogie... [2018-06-22 14:43:58,382 INFO ]: ChcToBoogie initialized [2018-06-22 14:43:58,385 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:43:58" (1/1) ... [2018-06-22 14:43:58,546 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:58 Unit [2018-06-22 14:43:58,546 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 14:43:58,547 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 14:43:58,547 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 14:43:58,547 INFO ]: Boogie Preprocessor initialized [2018-06-22 14:43:58,570 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:58" (1/1) ... [2018-06-22 14:43:58,570 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:58" (1/1) ... [2018-06-22 14:43:58,613 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:58" (1/1) ... [2018-06-22 14:43:58,613 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:58" (1/1) ... [2018-06-22 14:43:58,657 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:58" (1/1) ... [2018-06-22 14:43:58,659 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:58" (1/1) ... [2018-06-22 14:43:58,671 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:58" (1/1) ... [2018-06-22 14:43:58,696 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 14:43:58,697 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 14:43:58,697 INFO ]: Initializing RCFGBuilder... [2018-06-22 14:43:58,697 INFO ]: RCFGBuilder initialized [2018-06-22 14:43:58,698 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:58" (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 14:43:58,713 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 14:43:58,713 INFO ]: Found specification of procedure False [2018-06-22 14:43:58,713 INFO ]: Found implementation of procedure False [2018-06-22 14:43:58,713 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 14:43:58,714 INFO ]: Found specification of procedure state [2018-06-22 14:43:58,714 INFO ]: Found implementation of procedure state [2018-06-22 14:43:58,714 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 14:43:58,714 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 14:43:58,714 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 14:44:00,786 INFO ]: Using library mode [2018-06-22 14:44:00,787 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:44:00 BoogieIcfgContainer [2018-06-22 14:44:00,787 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 14:44:00,788 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 14:44:00,788 INFO ]: Initializing TraceAbstraction... [2018-06-22 14:44:00,791 INFO ]: TraceAbstraction initialized [2018-06-22 14:44:00,791 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 02:43:58" (1/3) ... [2018-06-22 14:44:00,792 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a270b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 02:44:00, skipping insertion in model container [2018-06-22 14:44:00,792 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 02:43:58" (2/3) ... [2018-06-22 14:44:00,792 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a270b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 02:44:00, skipping insertion in model container [2018-06-22 14:44:00,792 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 02:44:00" (3/3) ... [2018-06-22 14:44:00,795 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 14:44:00,805 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 14:44:00,815 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 14:44:00,863 INFO ]: Using default assertion order modulation [2018-06-22 14:44:00,864 INFO ]: Interprodecural is true [2018-06-22 14:44:00,864 INFO ]: Hoare is false [2018-06-22 14:44:00,864 INFO ]: Compute interpolants for FPandBP [2018-06-22 14:44:00,864 INFO ]: Backedges is TWOTRACK [2018-06-22 14:44:00,864 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 14:44:00,864 INFO ]: Difference is false [2018-06-22 14:44:00,864 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 14:44:00,864 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 14:44:00,882 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 14:44:00,896 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 14:44:00,896 INFO ]: Found error trace [2018-06-22 14:44:00,897 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:44:00,897 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:44:00,903 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 14:44:00,905 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:44:00,905 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:44:00,953 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:00,953 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:44:00,953 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:01,102 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:01,344 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 14:44:01,345 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 14:44:01,346 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 14:44:01,347 INFO ]: Interpolant automaton has 4 states [2018-06-22 14:44:01,358 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 14:44:01,358 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 14:44:01,360 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 14:44:01,670 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:44:01,670 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 14:44:01,672 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 14:44:01,674 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 14:44:01,674 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:44:01,688 INFO ]: With dead ends: 13 [2018-06-22 14:44:01,688 INFO ]: Without dead ends: 13 [2018-06-22 14:44:01,690 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 14:44:01,710 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 14:44:01,750 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 14:44:01,751 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 14:44:01,752 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 14:44:01,753 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 14:44:01,753 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:44:01,753 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 14:44:01,753 INFO ]: Interpolant automaton has 4 states. [2018-06-22 14:44:01,753 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 14:44:01,755 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 14:44:01,755 INFO ]: Found error trace [2018-06-22 14:44:01,755 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:44:01,755 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:44:01,755 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 14:44:01,755 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:44:01,755 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:44:01,756 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:01,756 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:44:01,756 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:02,207 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:03,062 WARN ]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 14:44:03,262 WARN ]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 14:44:03,605 WARN ]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 14:44:03,607 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:44:03,607 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:44:03,607 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 14:44:03,625 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:44:04,021 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:04,059 INFO ]: Computing forward predicates... [2018-06-22 14:44:04,274 WARN ]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 5 [2018-06-22 14:44:07,798 WARN ]: Spent 311.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 18 [2018-06-22 14:44:07,963 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 14:44:07,995 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:44:07,995 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-22 14:44:07,995 INFO ]: Interpolant automaton has 10 states [2018-06-22 14:44:07,996 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 14:44:07,996 INFO ]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-06-22 14:44:07,996 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2018-06-22 14:44:08,689 WARN ]: Spent 161.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 17 [2018-06-22 14:44:08,824 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:44:08,824 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 14:44:08,825 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 14:44:08,825 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-22 14:44:08,825 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:44:08,825 INFO ]: With dead ends: 15 [2018-06-22 14:44:08,825 INFO ]: Without dead ends: 15 [2018-06-22 14:44:08,826 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:44:08,826 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 14:44:08,829 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 14:44:08,829 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 14:44:08,830 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 14:44:08,830 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 14:44:08,830 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:44:08,830 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 14:44:08,830 INFO ]: Interpolant automaton has 10 states. [2018-06-22 14:44:08,830 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 14:44:08,830 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 14:44:08,830 INFO ]: Found error trace [2018-06-22 14:44:08,830 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:44:08,830 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:44:08,831 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 14:44:08,831 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:44:08,831 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:44:08,832 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:08,832 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 14:44:08,832 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:09,433 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:10,526 WARN ]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 14:44:10,731 WARN ]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 14:44:10,960 WARN ]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-22 14:44:11,189 WARN ]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-22 14:44:11,592 WARN ]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-22 14:44:11,594 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:44:11,594 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:44:11,594 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 14:44:11,609 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 14:44:12,153 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 14:44:12,154 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:12,201 INFO ]: Computing forward predicates... [2018-06-22 14:44:15,716 WARN ]: Spent 162.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2018-06-22 14:44:15,815 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 14:44:15,839 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:44:15,839 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-22 14:44:15,839 INFO ]: Interpolant automaton has 13 states [2018-06-22 14:44:15,840 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-22 14:44:15,840 INFO ]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-06-22 14:44:15,840 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-22 14:44:16,561 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:44:16,561 INFO ]: Finished difference Result 21 states and 22 transitions. [2018-06-22 14:44:16,562 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 14:44:16,562 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-22 14:44:16,563 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:44:16,563 INFO ]: With dead ends: 21 [2018-06-22 14:44:16,563 INFO ]: Without dead ends: 21 [2018-06-22 14:44:16,563 INFO ]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2018-06-22 14:44:16,564 INFO ]: Start minimizeSevpa. Operand 21 states. [2018-06-22 14:44:16,567 INFO ]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-06-22 14:44:16,567 INFO ]: Start removeUnreachable. Operand 21 states. [2018-06-22 14:44:16,567 INFO ]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-06-22 14:44:16,568 INFO ]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 17 [2018-06-22 14:44:16,568 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:44:16,568 INFO ]: Abstraction has 21 states and 22 transitions. [2018-06-22 14:44:16,568 INFO ]: Interpolant automaton has 13 states. [2018-06-22 14:44:16,568 INFO ]: Start isEmpty. Operand 21 states and 22 transitions. [2018-06-22 14:44:16,568 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 14:44:16,569 INFO ]: Found error trace [2018-06-22 14:44:16,569 INFO ]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:44:16,569 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:44:16,569 INFO ]: Analyzing trace with hash 1986427350, now seen corresponding path program 3 times [2018-06-22 14:44:16,569 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:44:16,569 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:44:16,570 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:16,570 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:44:16,570 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:17,460 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:19,098 INFO ]: Checked inductivity of 55 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:44:19,098 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:44:19,098 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 14:44:19,116 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 14:44:20,481 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-06-22 14:44:20,481 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:20,586 INFO ]: Computing forward predicates... [2018-06-22 14:44:22,883 WARN ]: Spent 157.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2018-06-22 14:44:24,610 WARN ]: Spent 953.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2018-06-22 14:44:26,333 WARN ]: Spent 764.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2018-06-22 14:44:28,147 WARN ]: Spent 1.07 s on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2018-06-22 14:44:28,364 INFO ]: Checked inductivity of 55 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-06-22 14:44:28,397 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 14:44:28,397 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 24 [2018-06-22 14:44:28,397 INFO ]: Interpolant automaton has 24 states [2018-06-22 14:44:28,397 INFO ]: Constructing interpolant automaton starting with 24 interpolants. [2018-06-22 14:44:28,397 INFO ]: CoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2018-06-22 14:44:28,398 INFO ]: Start difference. First operand 21 states and 22 transitions. Second operand 24 states. [2018-06-22 14:44:28,999 WARN ]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2018-06-22 14:44:29,367 WARN ]: Spent 325.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 39 [2018-06-22 14:44:29,876 WARN ]: Spent 461.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 46 [2018-06-22 14:44:30,495 WARN ]: Spent 567.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-06-22 14:44:31,493 WARN ]: Spent 941.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2018-06-22 14:44:31,568 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 14:44:31,568 INFO ]: Finished difference Result 27 states and 28 transitions. [2018-06-22 14:44:31,569 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 14:44:31,569 INFO ]: Start accepts. Automaton has 24 states. Word has length 29 [2018-06-22 14:44:31,569 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 14:44:31,570 INFO ]: With dead ends: 27 [2018-06-22 14:44:31,570 INFO ]: Without dead ends: 27 [2018-06-22 14:44:31,570 INFO ]: 0 DeclaredPredicates, 49 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=256, Invalid=674, Unknown=0, NotChecked=0, Total=930 [2018-06-22 14:44:31,570 INFO ]: Start minimizeSevpa. Operand 27 states. [2018-06-22 14:44:31,574 INFO ]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-06-22 14:44:31,574 INFO ]: Start removeUnreachable. Operand 27 states. [2018-06-22 14:44:31,575 INFO ]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-06-22 14:44:31,575 INFO ]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 29 [2018-06-22 14:44:31,575 INFO ]: Finished accepts. word is rejected. [2018-06-22 14:44:31,575 INFO ]: Abstraction has 27 states and 28 transitions. [2018-06-22 14:44:31,575 INFO ]: Interpolant automaton has 24 states. [2018-06-22 14:44:31,575 INFO ]: Start isEmpty. Operand 27 states and 28 transitions. [2018-06-22 14:44:31,577 INFO ]: Finished isEmpty. Found accepting run of length 42 [2018-06-22 14:44:31,577 INFO ]: Found error trace [2018-06-22 14:44:31,577 INFO ]: trace histogram [9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 14:44:31,577 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 14:44:31,577 INFO ]: Analyzing trace with hash -544278078, now seen corresponding path program 4 times [2018-06-22 14:44:31,577 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 14:44:31,577 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 14:44:31,578 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:31,578 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 14:44:31,578 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 14:44:34,522 INFO ]: Conjunction of SSA is unsat [2018-06-22 14:44:36,638 WARN ]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-22 14:44:37,550 WARN ]: Spent 860.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 16 [2018-06-22 14:44:37,751 WARN ]: Spent 129.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-06-22 14:44:38,104 INFO ]: Checked inductivity of 136 backedges. 1 proven. 99 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-06-22 14:44:38,104 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 14:44:38,104 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 14:44:38,109 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown