java -Xss4m -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/dillig07.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 12:51:38,825 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 12:51:38,829 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 12:51:38,841 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 12:51:38,841 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 12:51:38,842 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 12:51:38,846 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 12:51:38,848 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 12:51:38,850 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 12:51:38,850 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 12:51:38,852 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 12:51:38,852 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 12:51:38,853 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 12:51:38,854 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 12:51:38,855 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 12:51:38,856 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 12:51:38,860 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 12:51:38,861 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 12:51:38,864 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 12:51:38,865 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 12:51:38,867 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 12:51:38,869 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 12:51:38,869 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 12:51:38,870 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 12:51:38,870 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 12:51:38,878 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 12:51:38,879 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 12:51:38,880 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 12:51:38,881 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 12:51:38,881 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 12:51:38,881 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 12:51:38,883 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 12:51:38,883 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 12:51:38,883 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 12:51:38,884 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 12:51:38,884 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 12:51:38,897 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 12:51:38,897 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 12:51:38,898 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 12:51:38,898 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 12:51:38,899 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 12:51:38,899 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 12:51:38,899 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 12:51:38,900 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 12:51:38,900 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 12:51:38,900 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 12:51:38,900 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 12:51:38,900 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 12:51:38,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 12:51:38,901 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 12:51:38,901 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 12:51:38,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 12:51:38,902 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 12:51:38,902 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 12:51:38,902 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 12:51:38,902 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 12:51:38,902 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 12:51:38,904 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 12:51:38,904 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 12:51:38,955 INFO ]: Repository-Root is: /tmp [2018-06-25 12:51:38,974 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 12:51:38,981 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 12:51:38,982 INFO ]: Initializing SmtParser... [2018-06-25 12:51:38,982 INFO ]: SmtParser initialized [2018-06-25 12:51:38,983 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig07.c.smt2 [2018-06-25 12:51:38,984 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 [2018-06-25 12:51:39,073 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig07.c.smt2 unknown [2018-06-25 12:51:39,311 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/ctigar/dillig07.c.smt2 [2018-06-25 12:51:39,318 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 12:51:39,323 INFO ]: Walking toolchain with 4 elements. [2018-06-25 12:51:39,324 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 12:51:39,324 INFO ]: Initializing ChcToBoogie... [2018-06-25 12:51:39,324 INFO ]: ChcToBoogie initialized [2018-06-25 12:51:39,328 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:51:39" (1/1) ... [2018-06-25 12:51:39,385 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:51:39 Unit [2018-06-25 12:51:39,385 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 12:51:39,386 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 12:51:39,386 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 12:51:39,386 INFO ]: Boogie Preprocessor initialized [2018-06-25 12:51:39,408 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:51:39" (1/1) ... [2018-06-25 12:51:39,408 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:51:39" (1/1) ... [2018-06-25 12:51:39,416 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:51:39" (1/1) ... [2018-06-25 12:51:39,416 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:51:39" (1/1) ... [2018-06-25 12:51:39,420 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:51:39" (1/1) ... [2018-06-25 12:51:39,429 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:51:39" (1/1) ... [2018-06-25 12:51:39,431 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:51:39" (1/1) ... [2018-06-25 12:51:39,432 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 12:51:39,433 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 12:51:39,433 INFO ]: Initializing RCFGBuilder... [2018-06-25 12:51:39,433 INFO ]: RCFGBuilder initialized [2018-06-25 12:51:39,434 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:51:39" (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) [2018-06-25 12:51:39,453 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 12:51:39,453 INFO ]: Found specification of procedure gotoProc [2018-06-25 12:51:39,453 INFO ]: Found implementation of procedure gotoProc [2018-06-25 12:51:39,453 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 12:51:39,453 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 12:51:39,453 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 [2018-06-25 12:51:39,627 INFO ]: Using library mode [2018-06-25 12:51:39,706 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:51:39 BoogieIcfgContainer [2018-06-25 12:51:39,707 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 12:51:39,708 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 12:51:39,708 INFO ]: Initializing TraceAbstraction... [2018-06-25 12:51:39,711 INFO ]: TraceAbstraction initialized [2018-06-25 12:51:39,711 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:51:39" (1/3) ... [2018-06-25 12:51:39,712 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a767d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 12:51:39, skipping insertion in model container [2018-06-25 12:51:39,712 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:51:39" (2/3) ... [2018-06-25 12:51:39,712 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53a767d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 12:51:39, skipping insertion in model container [2018-06-25 12:51:39,712 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:51:39" (3/3) ... [2018-06-25 12:51:39,722 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 12:51:39,729 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 12:51:39,736 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 12:51:39,769 INFO ]: Using default assertion order modulation [2018-06-25 12:51:39,769 INFO ]: Interprodecural is true [2018-06-25 12:51:39,769 INFO ]: Hoare is false [2018-06-25 12:51:39,769 INFO ]: Compute interpolants for FPandBP [2018-06-25 12:51:39,769 INFO ]: Backedges is TWOTRACK [2018-06-25 12:51:39,769 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 12:51:39,769 INFO ]: Difference is false [2018-06-25 12:51:39,769 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 12:51:39,769 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 12:51:39,781 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 12:51:39,790 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 12:51:39,791 INFO ]: Found error trace [2018-06-25 12:51:39,791 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:51:39,792 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:51:39,797 INFO ]: Analyzing trace with hash 1285054476, now seen corresponding path program 1 times [2018-06-25 12:51:39,798 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:51:39,798 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:51:39,832 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:51:39,832 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:51:39,832 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:51:39,867 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:51:39,949 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:51:39,951 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 12:51:39,951 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 12:51:39,952 INFO ]: Interpolant automaton has 3 states [2018-06-25 12:51:39,963 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 12:51:39,993 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 12:51:39,995 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 12:51:40,041 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:51:40,041 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 12:51:40,042 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 12:51:40,043 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 12:51:40,044 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:51:40,052 INFO ]: With dead ends: 9 [2018-06-25 12:51:40,053 INFO ]: Without dead ends: 9 [2018-06-25 12:51:40,054 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 [2018-06-25 12:51:40,067 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 12:51:40,092 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 12:51:40,095 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 12:51:40,095 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 12:51:40,097 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 12:51:40,097 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:51:40,097 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 12:51:40,097 INFO ]: Interpolant automaton has 3 states. [2018-06-25 12:51:40,097 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 12:51:40,097 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 12:51:40,097 INFO ]: Found error trace [2018-06-25 12:51:40,097 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:51:40,098 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:51:40,098 INFO ]: Analyzing trace with hash 1180100628, now seen corresponding path program 1 times [2018-06-25 12:51:40,098 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:51:40,098 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:51:40,099 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:51:40,099 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:51:40,099 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:51:40,127 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:51:40,221 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:51:40,221 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:51:40,221 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 [2018-06-25 12:51:40,230 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:51:40,267 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:51:40,276 INFO ]: Computing forward predicates... [2018-06-25 12:51:40,627 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:51:40,661 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:51:40,662 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-25 12:51:40,662 INFO ]: Interpolant automaton has 5 states [2018-06-25 12:51:40,662 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-25 12:51:40,662 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-25 12:51:40,663 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2018-06-25 12:51:40,759 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:51:40,759 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 12:51:40,760 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 12:51:40,760 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-25 12:51:40,760 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:51:40,760 INFO ]: With dead ends: 11 [2018-06-25 12:51:40,760 INFO ]: Without dead ends: 11 [2018-06-25 12:51:40,761 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 [2018-06-25 12:51:40,761 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 12:51:40,762 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 12:51:40,763 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 12:51:40,763 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 12:51:40,763 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-25 12:51:40,763 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:51:40,763 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 12:51:40,763 INFO ]: Interpolant automaton has 5 states. [2018-06-25 12:51:40,763 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 12:51:40,763 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 12:51:40,763 INFO ]: Found error trace [2018-06-25 12:51:40,763 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:51:40,764 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:51:40,766 INFO ]: Analyzing trace with hash 145098516, now seen corresponding path program 2 times [2018-06-25 12:51:40,766 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:51:40,766 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:51:40,767 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:51:40,767 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:51:40,767 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:51:40,815 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:51:41,193 WARN ]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-25 12:51:41,251 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:51:41,251 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:51:41,251 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 [2018-06-25 12:51:41,260 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 12:51:41,300 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 12:51:41,300 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:51:41,303 INFO ]: Computing forward predicates... [2018-06-25 12:51:44,300 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:51:44,319 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:51:44,319 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-25 12:51:44,320 INFO ]: Interpolant automaton has 7 states [2018-06-25 12:51:44,320 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-25 12:51:44,320 INFO ]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-06-25 12:51:44,320 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 7 states. [2018-06-25 12:51:44,576 WARN ]: Spent 215.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 11 [2018-06-25 12:51:44,633 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:51:44,633 INFO ]: Finished difference Result 12 states and 12 transitions. [2018-06-25 12:51:44,633 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-25 12:51:44,634 INFO ]: Start accepts. Automaton has 7 states. Word has length 10 [2018-06-25 12:51:44,634 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:51:44,634 INFO ]: With dead ends: 12 [2018-06-25 12:51:44,634 INFO ]: Without dead ends: 12 [2018-06-25 12:51:44,634 INFO ]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-06-25 12:51:44,634 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-25 12:51:44,637 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-06-25 12:51:44,637 INFO ]: Start removeUnreachable. Operand 12 states. [2018-06-25 12:51:44,638 INFO ]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-06-25 12:51:44,638 INFO ]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-06-25 12:51:44,638 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:51:44,638 INFO ]: Abstraction has 12 states and 12 transitions. [2018-06-25 12:51:44,638 INFO ]: Interpolant automaton has 7 states. [2018-06-25 12:51:44,638 INFO ]: Start isEmpty. Operand 12 states and 12 transitions. [2018-06-25 12:51:44,638 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-25 12:51:44,638 INFO ]: Found error trace [2018-06-25 12:51:44,638 INFO ]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:51:44,639 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:51:44,639 INFO ]: Analyzing trace with hash 201204236, now seen corresponding path program 3 times [2018-06-25 12:51:44,639 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:51:44,639 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:51:44,640 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:51:44,640 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:51:44,640 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:51:44,722 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:51:44,952 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:51:44,953 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:51:44,953 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 [2018-06-25 12:51:44,960 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 12:51:45,005 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-25 12:51:45,005 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:51:45,010 INFO ]: Computing forward predicates... [2018-06-25 12:51:46,625 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 12:51:51,828 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 12:51:52,751 INFO ]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:51:52,783 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:51:52,784 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-06-25 12:51:52,784 INFO ]: Interpolant automaton has 8 states [2018-06-25 12:51:52,784 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 12:51:52,784 INFO ]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-06-25 12:51:52,784 INFO ]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2018-06-25 12:51:52,986 WARN ]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-06-25 12:51:53,315 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:51:53,315 INFO ]: Finished difference Result 13 states and 13 transitions. [2018-06-25 12:51:53,315 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-25 12:51:53,315 INFO ]: Start accepts. Automaton has 8 states. Word has length 11 [2018-06-25 12:51:53,315 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:51:53,315 INFO ]: With dead ends: 13 [2018-06-25 12:51:53,315 INFO ]: Without dead ends: 13 [2018-06-25 12:51:53,316 INFO ]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2018-06-25 12:51:53,316 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 12:51:53,317 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 12:51:53,317 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 12:51:53,317 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-06-25 12:51:53,317 INFO ]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2018-06-25 12:51:53,318 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:51:53,318 INFO ]: Abstraction has 13 states and 13 transitions. [2018-06-25 12:51:53,318 INFO ]: Interpolant automaton has 8 states. [2018-06-25 12:51:53,318 INFO ]: Start isEmpty. Operand 13 states and 13 transitions. [2018-06-25 12:51:53,318 INFO ]: Finished isEmpty. Found accepting run of length 13 [2018-06-25 12:51:53,318 INFO ]: Found error trace [2018-06-25 12:51:53,318 INFO ]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:51:53,318 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:51:53,318 INFO ]: Analyzing trace with hash 1940481556, now seen corresponding path program 4 times [2018-06-25 12:51:53,318 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:51:53,318 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:51:53,319 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:51:53,319 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:51:53,319 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:51:53,355 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:51:53,703 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:51:53,703 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:51:53,703 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 [2018-06-25 12:51:53,709 INFO ]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-06-25 12:51:53,771 INFO ]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-06-25 12:51:53,771 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:51:53,774 INFO ]: Computing forward predicates... [2018-06-25 12:51:58,759 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 12:52:25,917 WARN ]: expecting exponential blowup for input size 6 [2018-06-25 12:52:26,413 INFO ]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:52:26,432 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:52:26,432 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2018-06-25 12:52:26,432 INFO ]: Interpolant automaton has 10 states [2018-06-25 12:52:26,432 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-25 12:52:26,432 INFO ]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-06-25 12:52:26,433 INFO ]: Start difference. First operand 13 states and 13 transitions. Second operand 10 states. [2018-06-25 12:52:26,775 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:52:26,775 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-25 12:52:26,775 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-25 12:52:26,775 INFO ]: Start accepts. Automaton has 10 states. Word has length 12 [2018-06-25 12:52:26,775 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:52:26,775 INFO ]: With dead ends: 14 [2018-06-25 12:52:26,775 INFO ]: Without dead ends: 14 [2018-06-25 12:52:26,776 INFO ]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2018-06-25 12:52:26,776 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-25 12:52:26,777 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-25 12:52:26,777 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-25 12:52:26,777 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-25 12:52:26,778 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2018-06-25 12:52:26,778 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:52:26,778 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-25 12:52:26,778 INFO ]: Interpolant automaton has 10 states. [2018-06-25 12:52:26,778 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-25 12:52:26,779 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-25 12:52:26,779 INFO ]: Found error trace [2018-06-25 12:52:26,779 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:52:26,779 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:52:26,779 INFO ]: Analyzing trace with hash 23503628, now seen corresponding path program 5 times [2018-06-25 12:52:26,779 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:52:26,779 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:52:26,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:52:26,780 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:52:26,780 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:52:26,817 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:52:27,271 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:52:27,271 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:52:27,271 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 [2018-06-25 12:52:27,282 INFO ]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-06-25 12:52:27,334 INFO ]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-06-25 12:52:27,334 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:52:27,339 INFO ]: Computing forward predicates... [2018-06-25 12:52:29,893 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 12:52:29,904 WARN ]: expecting exponential blowup for input size 7 [2018-06-25 12:52:38,784 WARN ]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 16 [2018-06-25 12:52:39,095 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:52:39,115 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:52:39,115 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2018-06-25 12:52:39,115 INFO ]: Interpolant automaton has 12 states [2018-06-25 12:52:39,115 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-25 12:52:39,115 INFO ]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-06-25 12:52:39,115 INFO ]: Start difference. First operand 14 states and 14 transitions. Second operand 12 states. [2018-06-25 12:52:39,551 WARN ]: Spent 403.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 26 [2018-06-25 12:52:39,695 WARN ]: Spent 134.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 27 [2018-06-25 12:52:39,876 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:52:39,876 INFO ]: Finished difference Result 15 states and 15 transitions. [2018-06-25 12:52:39,876 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-25 12:52:39,876 INFO ]: Start accepts. Automaton has 12 states. Word has length 13 [2018-06-25 12:52:39,876 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:52:39,876 INFO ]: With dead ends: 15 [2018-06-25 12:52:39,876 INFO ]: Without dead ends: 15 [2018-06-25 12:52:39,877 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2018-06-25 12:52:39,877 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-25 12:52:39,878 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-25 12:52:39,878 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-25 12:52:39,879 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-06-25 12:52:39,879 INFO ]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2018-06-25 12:52:39,879 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:52:39,879 INFO ]: Abstraction has 15 states and 15 transitions. [2018-06-25 12:52:39,879 INFO ]: Interpolant automaton has 12 states. [2018-06-25 12:52:39,879 INFO ]: Start isEmpty. Operand 15 states and 15 transitions. [2018-06-25 12:52:39,879 INFO ]: Finished isEmpty. Found accepting run of length 15 [2018-06-25 12:52:39,879 INFO ]: Found error trace [2018-06-25 12:52:39,879 INFO ]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:52:39,879 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:52:39,879 INFO ]: Analyzing trace with hash 726730004, now seen corresponding path program 6 times [2018-06-25 12:52:39,879 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:52:39,880 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:52:39,880 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:52:39,880 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:52:39,880 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:52:39,924 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:52:40,205 INFO ]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:52:40,205 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:52:40,206 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) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 12:52:40,234 INFO ]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-06-25 12:52:40,277 INFO ]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2018-06-25 12:52:40,277 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:52:40,280 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-25 12:52:45,764 INFO ]: Timeout while computing interpolants [2018-06-25 12:52:45,964 WARN ]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 12:52:45,964 WARN ]: Verification canceled [2018-06-25 12:52:45,968 WARN ]: Timeout [2018-06-25 12:52:45,968 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 12:52:45 BoogieIcfgContainer [2018-06-25 12:52:45,968 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 12:52:45,969 INFO ]: Toolchain (without parser) took 66650.19 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 263.1 MB in the beginning and 1.1 GB in the end (delta: -789.7 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 12:52:45,970 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 12:52:45,970 INFO ]: ChcToBoogie took 61.57 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 12:52:45,970 INFO ]: Boogie Preprocessor took 46.39 ms. Allocated memory is still 307.8 MB. Free memory was 260.2 MB in the beginning and 259.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. [2018-06-25 12:52:45,971 INFO ]: RCFGBuilder took 273.75 ms. Allocated memory is still 307.8 MB. Free memory was 259.1 MB in the beginning and 250.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. [2018-06-25 12:52:45,971 INFO ]: TraceAbstraction took 66259.74 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 250.1 MB in the beginning and 1.1 GB in the end (delta: -803.1 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 12:52:45,974 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 61.57 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 260.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 46.39 ms. Allocated memory is still 307.8 MB. Free memory was 260.2 MB in the beginning and 259.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 273.75 ms. Allocated memory is still 307.8 MB. Free memory was 259.1 MB in the beginning and 250.1 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 66259.74 ms. Allocated memory was 307.8 MB in the beginning and 1.5 GB in the end (delta: 1.2 GB). Free memory was 250.1 MB in the beginning and 1.1 GB in the end (delta: -803.1 MB). Peak memory consumption was 1.3 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 XnfDer was eliminating 14 quantified variables from 14 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 66.2s OverallTime, 7 OverallIterations, 7 TraceHistogramMax, 2.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 42 SDtfs, 15 SDslu, 138 SDs, 0 SdLazy, 52 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 39 SyntacticMatches, 14 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 3.8s 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 57.1s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 6916 SizeOfPredicates, 20 NumberOfNonLiveVariables, 670 ConjunctsInSsa, 182 ConjunctsInUnsatCore, 11 InterpolantComputations, 1 PerfectInterpolantSequences, 0/106 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/dillig07.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_12-52-45-986.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dillig07.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_12-52-45-986.csv Completed graceful shutdown