java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/ctigar/up3.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 06:05:28,890 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 06:05:28,892 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 06:05:28,907 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 06:05:28,908 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 06:05:28,908 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 06:05:28,909 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 06:05:28,912 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 06:05:28,913 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 06:05:28,914 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 06:05:28,916 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 06:05:28,917 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 06:05:28,917 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 06:05:28,918 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 06:05:28,919 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 06:05:28,920 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 06:05:28,924 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 06:05:28,925 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 06:05:28,935 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 06:05:28,937 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 06:05:28,937 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 06:05:28,939 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 06:05:28,940 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 06:05:28,943 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 06:05:28,944 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 06:05:28,945 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 06:05:28,945 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 06:05:28,946 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 06:05:28,947 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 06:05:28,947 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 06:05:28,948 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 06:05:28,950 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 06:05:28,950 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 06:05:28,951 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 06:05:28,951 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 06:05:28,952 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 06:05:28,973 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 06:05:28,973 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 06:05:28,973 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 06:05:28,974 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 06:05:28,975 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 06:05:28,975 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 06:05:28,975 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 06:05:28,975 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 06:05:28,975 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 06:05:28,976 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 06:05:28,976 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 06:05:28,977 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 06:05:28,977 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 06:05:28,977 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 06:05:28,977 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 06:05:28,977 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 06:05:28,977 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 06:05:28,980 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 06:05:28,980 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 06:05:29,033 INFO ]: Repository-Root is: /tmp [2018-06-22 06:05:29,065 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 06:05:29,070 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 06:05:29,072 INFO ]: Initializing SmtParser... [2018-06-22 06:05:29,072 INFO ]: SmtParser initialized [2018-06-22 06:05:29,072 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/up3.c.smt2 [2018-06-22 06:05:29,074 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 06:05:29,164 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/up3.c.smt2 unknown [2018-06-22 06:05:29,442 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/up3.c.smt2 [2018-06-22 06:05:29,447 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 06:05:29,459 INFO ]: Walking toolchain with 4 elements. [2018-06-22 06:05:29,460 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 06:05:29,460 INFO ]: Initializing ChcToBoogie... [2018-06-22 06:05:29,460 INFO ]: ChcToBoogie initialized [2018-06-22 06:05:29,486 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:05:29" (1/1) ... [2018-06-22 06:05:29,591 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:05:29 Unit [2018-06-22 06:05:29,591 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 06:05:29,592 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 06:05:29,592 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 06:05:29,592 INFO ]: Boogie Preprocessor initialized [2018-06-22 06:05:29,624 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:05:29" (1/1) ... [2018-06-22 06:05:29,625 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:05:29" (1/1) ... [2018-06-22 06:05:29,652 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:05:29" (1/1) ... [2018-06-22 06:05:29,652 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:05:29" (1/1) ... [2018-06-22 06:05:29,655 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:05:29" (1/1) ... [2018-06-22 06:05:29,657 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:05:29" (1/1) ... [2018-06-22 06:05:29,658 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:05:29" (1/1) ... [2018-06-22 06:05:29,659 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 06:05:29,660 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 06:05:29,660 INFO ]: Initializing RCFGBuilder... [2018-06-22 06:05:29,660 INFO ]: RCFGBuilder initialized [2018-06-22 06:05:29,661 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:05:29" (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 06:05:29,708 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 06:05:29,708 INFO ]: Found specification of procedure gotoProc [2018-06-22 06:05:29,708 INFO ]: Found implementation of procedure gotoProc [2018-06-22 06:05:29,709 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 06:05:29,709 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 06:05:29,709 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 06:05:29,987 INFO ]: Using library mode [2018-06-22 06:05:29,988 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:05:29 BoogieIcfgContainer [2018-06-22 06:05:29,988 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 06:05:29,989 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 06:05:29,989 INFO ]: Initializing TraceAbstraction... [2018-06-22 06:05:30,110 INFO ]: TraceAbstraction initialized [2018-06-22 06:05:30,111 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 06:05:29" (1/3) ... [2018-06-22 06:05:30,112 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ec80e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 06:05:30, skipping insertion in model container [2018-06-22 06:05:30,112 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 06:05:29" (2/3) ... [2018-06-22 06:05:30,112 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49ec80e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 06:05:30, skipping insertion in model container [2018-06-22 06:05:30,112 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 06:05:29" (3/3) ... [2018-06-22 06:05:30,115 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 06:05:30,202 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 06:05:30,225 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 06:05:30,504 INFO ]: Using default assertion order modulation [2018-06-22 06:05:30,504 INFO ]: Interprodecural is true [2018-06-22 06:05:30,504 INFO ]: Hoare is false [2018-06-22 06:05:30,505 INFO ]: Compute interpolants for FPandBP [2018-06-22 06:05:30,505 INFO ]: Backedges is TWOTRACK [2018-06-22 06:05:30,505 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 06:05:30,505 INFO ]: Difference is false [2018-06-22 06:05:30,505 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 06:05:30,505 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 06:05:30,620 INFO ]: Start isEmpty. Operand 10 states. [2018-06-22 06:05:30,665 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-22 06:05:30,665 INFO ]: Found error trace [2018-06-22 06:05:30,666 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:05:30,667 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:05:30,670 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-22 06:05:30,705 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:05:30,705 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:05:30,960 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:30,961 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:05:30,961 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:31,046 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:31,164 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:05:31,188 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 06:05:31,188 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 06:05:31,189 INFO ]: Interpolant automaton has 3 states [2018-06-22 06:05:31,307 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 06:05:31,307 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 06:05:31,343 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-22 06:05:31,497 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:05:31,497 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-22 06:05:31,498 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 06:05:31,520 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-22 06:05:31,521 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:05:31,559 INFO ]: With dead ends: 9 [2018-06-22 06:05:31,559 INFO ]: Without dead ends: 9 [2018-06-22 06:05:31,561 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 06:05:31,822 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-22 06:05:31,856 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-22 06:05:31,857 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-22 06:05:31,858 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-22 06:05:31,859 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-22 06:05:31,859 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:05:31,859 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-22 06:05:31,859 INFO ]: Interpolant automaton has 3 states. [2018-06-22 06:05:31,859 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-22 06:05:31,859 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 06:05:31,859 INFO ]: Found error trace [2018-06-22 06:05:31,859 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:05:31,859 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:05:31,859 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-22 06:05:31,859 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:05:31,860 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:05:31,860 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:31,860 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:05:31,860 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:31,884 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:31,972 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:05:31,972 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:05:31,972 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 06:05:31,981 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:05:32,022 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:32,033 INFO ]: Computing forward predicates... [2018-06-22 06:05:32,361 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:05:32,397 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:05:32,397 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-22 06:05:32,398 INFO ]: Interpolant automaton has 5 states [2018-06-22 06:05:32,398 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-22 06:05:32,398 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-22 06:05:32,398 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-22 06:05:32,489 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:05:32,489 INFO ]: Finished difference Result 10 states and 10 transitions. [2018-06-22 06:05:32,490 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 06:05:32,490 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-22 06:05:32,490 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:05:32,490 INFO ]: With dead ends: 10 [2018-06-22 06:05:32,490 INFO ]: Without dead ends: 10 [2018-06-22 06:05:32,491 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-22 06:05:32,492 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-22 06:05:32,493 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-22 06:05:32,493 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-22 06:05:32,493 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2018-06-22 06:05:32,493 INFO ]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2018-06-22 06:05:32,493 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:05:32,493 INFO ]: Abstraction has 10 states and 10 transitions. [2018-06-22 06:05:32,493 INFO ]: Interpolant automaton has 5 states. [2018-06-22 06:05:32,493 INFO ]: Start isEmpty. Operand 10 states and 10 transitions. [2018-06-22 06:05:32,494 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 06:05:32,494 INFO ]: Found error trace [2018-06-22 06:05:32,494 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:05:32,494 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:05:32,494 INFO ]: Analyzing trace with hash -2043975570, now seen corresponding path program 2 times [2018-06-22 06:05:32,494 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:05:32,494 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:05:32,496 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:32,496 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 06:05:32,496 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:32,546 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:32,849 WARN ]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 06:05:32,850 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:05:32,850 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:05:32,850 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 06:05:32,866 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 06:05:32,932 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 06:05:32,932 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:32,935 INFO ]: Computing forward predicates... [2018-06-22 06:05:33,580 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:05:33,601 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:05:33,601 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-22 06:05:33,601 INFO ]: Interpolant automaton has 6 states [2018-06-22 06:05:33,601 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 06:05:33,601 INFO ]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-06-22 06:05:33,602 INFO ]: Start difference. First operand 10 states and 10 transitions. Second operand 6 states. [2018-06-22 06:05:33,828 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:05:33,828 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-22 06:05:33,829 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 06:05:33,829 INFO ]: Start accepts. Automaton has 6 states. Word has length 9 [2018-06-22 06:05:33,829 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:05:33,829 INFO ]: With dead ends: 11 [2018-06-22 06:05:33,829 INFO ]: Without dead ends: 11 [2018-06-22 06:05:33,830 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2018-06-22 06:05:33,830 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 06:05:33,831 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 06:05:33,831 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 06:05:33,831 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-22 06:05:33,831 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2018-06-22 06:05:33,831 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:05:33,831 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-22 06:05:33,831 INFO ]: Interpolant automaton has 6 states. [2018-06-22 06:05:33,832 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-22 06:05:33,832 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 06:05:33,832 INFO ]: Found error trace [2018-06-22 06:05:33,832 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:05:33,832 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:05:33,832 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 3 times [2018-06-22 06:05:33,832 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:05:33,832 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:05:33,833 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:33,833 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 06:05:33,833 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:33,889 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:34,256 WARN ]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-22 06:05:34,422 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:05:34,422 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:05:34,422 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 06:05:34,430 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 06:05:34,487 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-22 06:05:34,487 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:34,489 INFO ]: Computing forward predicates... [2018-06-22 06:05:36,038 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:05:36,061 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:05:36,061 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-22 06:05:36,061 INFO ]: Interpolant automaton has 7 states [2018-06-22 06:05:36,061 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-22 06:05:36,061 INFO ]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-06-22 06:05:36,061 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-22 06:05:36,149 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:05:36,149 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-22 06:05:36,150 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-22 06:05:36,150 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-22 06:05:36,150 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:05:36,150 INFO ]: With dead ends: 13 [2018-06-22 06:05:36,150 INFO ]: Without dead ends: 13 [2018-06-22 06:05:36,150 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2018-06-22 06:05:36,151 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 06:05:36,152 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 06:05:36,152 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 06:05:36,152 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-22 06:05:36,152 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-06-22 06:05:36,152 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:05:36,152 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-22 06:05:36,152 INFO ]: Interpolant automaton has 7 states. [2018-06-22 06:05:36,152 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-22 06:05:36,153 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-22 06:05:36,153 INFO ]: Found error trace [2018-06-22 06:05:36,153 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:05:36,153 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:05:36,153 INFO ]: Analyzing trace with hash -1502133097, now seen corresponding path program 4 times [2018-06-22 06:05:36,153 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:05:36,153 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:05:36,154 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:36,154 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 06:05:36,155 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:36,209 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:36,502 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:05:36,502 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:05:36,502 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 06:05:36,514 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-22 06:05:36,568 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-22 06:05:36,568 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:36,571 INFO ]: Computing forward predicates... [2018-06-22 06:05:39,648 WARN ]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 16 [2018-06-22 06:05:41,406 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:05:41,426 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:05:41,426 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-06-22 06:05:41,427 INFO ]: Interpolant automaton has 10 states [2018-06-22 06:05:41,427 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-22 06:05:41,427 INFO ]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-06-22 06:05:41,427 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-06-22 06:05:41,727 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:05:41,727 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-22 06:05:41,727 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-22 06:05:41,727 INFO ]: Start accepts. Automaton has 10 states. Word has length 12 [2018-06-22 06:05:41,727 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:05:41,728 INFO ]: With dead ends: 14 [2018-06-22 06:05:41,728 INFO ]: Without dead ends: 14 [2018-06-22 06:05:41,728 INFO ]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2018-06-22 06:05:41,728 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-22 06:05:41,729 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-22 06:05:41,729 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-22 06:05:41,730 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-22 06:05:41,730 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-22 06:05:41,730 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:05:41,730 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-22 06:05:41,730 INFO ]: Interpolant automaton has 10 states. [2018-06-22 06:05:41,730 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-22 06:05:41,730 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 06:05:41,730 INFO ]: Found error trace [2018-06-22 06:05:41,730 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:05:41,730 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:05:41,731 INFO ]: Analyzing trace with hash 679342766, now seen corresponding path program 5 times [2018-06-22 06:05:41,731 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:05:41,731 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:05:41,731 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:41,731 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 06:05:41,731 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:41,827 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:42,218 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:05:42,219 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:05:42,219 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 06:05:42,224 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-22 06:05:42,307 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-22 06:05:42,307 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:42,311 INFO ]: Computing forward predicates... [2018-06-22 06:05:46,955 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:05:46,975 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 06:05:46,975 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2018-06-22 06:05:46,975 INFO ]: Interpolant automaton has 11 states [2018-06-22 06:05:46,975 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 06:05:46,975 INFO ]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-06-22 06:05:46,975 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 11 states. [2018-06-22 06:05:47,282 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 06:05:47,282 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-22 06:05:47,282 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 06:05:47,282 INFO ]: Start accepts. Automaton has 11 states. Word has length 13 [2018-06-22 06:05:47,282 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 06:05:47,282 INFO ]: With dead ends: 15 [2018-06-22 06:05:47,282 INFO ]: Without dead ends: 15 [2018-06-22 06:05:47,283 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=202, Unknown=0, NotChecked=0, Total=306 [2018-06-22 06:05:47,283 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 06:05:47,284 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 06:05:47,284 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 06:05:47,284 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-22 06:05:47,284 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-06-22 06:05:47,284 INFO ]: Finished accepts. word is rejected. [2018-06-22 06:05:47,284 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-22 06:05:47,284 INFO ]: Interpolant automaton has 11 states. [2018-06-22 06:05:47,285 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-22 06:05:47,285 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-22 06:05:47,285 INFO ]: Found error trace [2018-06-22 06:05:47,285 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 06:05:47,285 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 06:05:47,285 INFO ]: Analyzing trace with hash -414382217, now seen corresponding path program 6 times [2018-06-22 06:05:47,285 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 06:05:47,285 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 06:05:47,286 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:47,286 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 06:05:47,286 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 06:05:47,343 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:47,565 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 06:05:47,565 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 06:05:47,565 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-06-22 06:05:47,582 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 06:05:47,649 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-06-22 06:05:47,649 INFO ]: Conjunction of SSA is unsat [2018-06-22 06:05:47,654 INFO ]: Computing forward predicates... [2018-06-22 06:05:48,760 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:05:48,787 WARN ]: expecting exponential blowup for input size 10 [2018-06-22 06:05:49,234 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:05:49,250 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:05:49,266 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:05:58,252 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 10 [2018-06-22 06:06:08,524 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:06:08,596 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:08,718 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:06:08,763 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:08,769 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:08,788 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:08,800 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:08,930 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:08,935 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:08,943 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:08,982 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,020 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,037 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,052 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,094 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,096 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,110 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:06:09,148 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,166 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,173 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,194 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,220 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,244 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,261 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,271 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,312 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:06:09,386 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,392 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,397 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,403 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,406 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,413 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:06:09,439 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,469 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:06:09,482 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,487 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,490 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:06:09,553 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,567 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,580 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:06:09,636 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:06:09,668 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,688 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,709 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,737 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,748 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,760 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,770 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,777 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,781 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,804 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,820 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,827 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,849 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,853 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,874 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,888 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,903 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:06:09,939 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,946 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,955 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:09,986 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,005 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,008 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,081 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,097 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:06:10,109 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,130 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,143 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,167 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:06:10,200 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,228 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:06:10,266 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:06:10,349 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,370 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,377 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,392 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,402 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,431 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,484 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,508 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,532 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,540 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,570 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,591 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,605 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,634 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,639 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,722 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:06:10,767 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,785 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,788 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:10,817 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:06:10,836 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:06:10,852 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,009 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,023 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,027 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,030 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,047 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,059 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,080 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,120 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,141 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,154 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,167 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,172 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,195 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,231 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 06:06:11,307 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,354 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,377 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,425 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,429 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,432 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,445 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 06:06:11,467 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,478 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,487 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,492 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,516 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,532 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,552 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,585 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,592 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,607 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,612 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,622 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,627 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,644 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 06:06:11,672 WARN ]: expecting exponential blowup for input size 6 Received shutdown request... [2018-06-22 06:06:39,054 INFO ]: Timeout while computing interpolants [2018-06-22 06:06:39,255 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 06:06:39,255 WARN ]: Verification canceled [2018-06-22 06:06:39,399 WARN ]: Timeout [2018-06-22 06:06:39,400 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 06:06:39 BoogieIcfgContainer [2018-06-22 06:06:39,400 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 06:06:39,503 INFO ]: Toolchain (without parser) took 70052.37 ms. Allocated memory was 305.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 259.5 MB in the beginning and 1.0 GB in the end (delta: -786.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-22 06:06:39,503 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 305.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 06:06:39,504 INFO ]: ChcToBoogie took 131.22 ms. Allocated memory is still 305.1 MB. Free memory was 257.5 MB in the beginning and 255.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:06:39,504 INFO ]: Boogie Preprocessor took 67.98 ms. Allocated memory is still 305.1 MB. Free memory is still 255.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 06:06:39,505 INFO ]: RCFGBuilder took 328.09 ms. Allocated memory is still 305.1 MB. Free memory was 255.5 MB in the beginning and 245.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 06:06:39,505 INFO ]: TraceAbstraction took 69410.49 ms. Allocated memory was 305.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 245.5 MB in the beginning and 1.0 GB in the end (delta: -800.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. [2018-06-22 06:06:39,514 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 305.1 MB. Free memory is still 269.6 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 131.22 ms. Allocated memory is still 305.1 MB. Free memory was 257.5 MB in the beginning and 255.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 67.98 ms. Allocated memory is still 305.1 MB. Free memory is still 255.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 328.09 ms. Allocated memory is still 305.1 MB. Free memory was 255.5 MB in the beginning and 245.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 69410.49 ms. Allocated memory was 305.1 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 245.5 MB in the beginning and 1.0 GB in the end (delta: -800.1 MB). Peak memory consumption was 1.4 GB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 15 with TraceHistMax 7, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while XnfDer was eliminating 17997 quantified variables from 15 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 68.9s OverallTime, 7 OverallIterations, 7 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 11 SDslu, 114 SDs, 0 SdLazy, 44 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 38 SyntacticMatches, 14 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 100 ConstructedInterpolants, 0 QuantifiedInterpolants, 4864 SizeOfPredicates, 20 NumberOfNonLiveVariables, 725 ConjunctsInSsa, 142 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/92 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/up3.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_06-06-39-726.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/up3.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_06-06-39-726.csv Completed graceful shutdown