java -Xss1g -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:29:27,763 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:29:27,766 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:29:27,779 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:29:27,779 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:29:27,780 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:29:27,781 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:29:27,786 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:29:27,787 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:29:27,789 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:29:27,790 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:29:27,790 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:29:27,791 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:29:27,792 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:29:27,797 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:29:27,797 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:29:27,799 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:29:27,812 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:29:27,813 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:29:27,814 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:29:27,815 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:29:27,817 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:29:27,818 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:29:27,818 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:29:27,818 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:29:27,823 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:29:27,824 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:29:27,825 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:29:27,826 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 11:29:27,826 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 11:29:27,826 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 11:29:27,832 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 11:29:27,833 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 11:29:27,833 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 11:29:27,834 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 11:29:27,834 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-22 11:29:27,849 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:29:27,849 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:29:27,850 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:29:27,850 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:29:27,853 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:29:27,853 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:29:27,854 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:29:27,854 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:29:27,854 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:29:27,854 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:29:27,854 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:29:27,855 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:29:27,855 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:29:27,855 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:29:27,855 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:29:27,855 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:29:27,856 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:29:27,856 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:29:27,856 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:29:27,857 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:29:27,857 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:29:27,900 INFO ]: Repository-Root is: /tmp [2018-06-22 11:29:27,913 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:29:27,916 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:29:27,917 INFO ]: Initializing SmtParser... [2018-06-22 11:29:27,918 INFO ]: SmtParser initialized [2018-06-22 11:29:27,918 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 [2018-06-22 11:29:27,920 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 11:29:28,012 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 unknown [2018-06-22 11:29:28,270 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/dotprod.smt2 [2018-06-22 11:29:28,275 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:29:28,281 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:29:28,281 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:29:28,281 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:29:28,282 INFO ]: ChcToBoogie initialized [2018-06-22 11:29:28,285 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:29:28" (1/1) ... [2018-06-22 11:29:28,335 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:28 Unit [2018-06-22 11:29:28,335 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:29:28,337 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:29:28,337 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:29:28,337 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:29:28,358 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:28" (1/1) ... [2018-06-22 11:29:28,358 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:28" (1/1) ... [2018-06-22 11:29:28,365 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:28" (1/1) ... [2018-06-22 11:29:28,365 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:28" (1/1) ... [2018-06-22 11:29:28,369 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:28" (1/1) ... [2018-06-22 11:29:28,372 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:28" (1/1) ... [2018-06-22 11:29:28,373 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:28" (1/1) ... [2018-06-22 11:29:28,375 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:29:28,376 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:29:28,376 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:29:28,376 INFO ]: RCFGBuilder initialized [2018-06-22 11:29:28,376 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:28" (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 11:29:28,390 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:29:28,390 INFO ]: Found specification of procedure False [2018-06-22 11:29:28,390 INFO ]: Found implementation of procedure False [2018-06-22 11:29:28,390 INFO ]: Specification and implementation of procedure updateDLRunknownCLN19 given in one single declaration [2018-06-22 11:29:28,390 INFO ]: Found specification of procedure updateDLRunknownCLN19 [2018-06-22 11:29:28,390 INFO ]: Found implementation of procedure updateDLRunknownCLN19 [2018-06-22 11:29:28,390 INFO ]: Specification and implementation of procedure subDLRunknownCLN15 given in one single declaration [2018-06-22 11:29:28,390 INFO ]: Found specification of procedure subDLRunknownCLN15 [2018-06-22 11:29:28,390 INFO ]: Found implementation of procedure subDLRunknownCLN15 [2018-06-22 11:29:28,390 INFO ]: Specification and implementation of procedure subDLRunknownCLN16 given in one single declaration [2018-06-22 11:29:28,390 INFO ]: Found specification of procedure subDLRunknownCLN16 [2018-06-22 11:29:28,390 INFO ]: Found implementation of procedure subDLRunknownCLN16 [2018-06-22 11:29:28,390 INFO ]: Specification and implementation of procedure dotprod_auxDLRunknownCLN10 given in one single declaration [2018-06-22 11:29:28,390 INFO ]: Found specification of procedure dotprod_auxDLRunknownCLN10 [2018-06-22 11:29:28,390 INFO ]: Found implementation of procedure dotprod_auxDLRunknownCLN10 [2018-06-22 11:29:28,390 INFO ]: Specification and implementation of procedure arraysizeDLRunknownCLN2 given in one single declaration [2018-06-22 11:29:28,390 INFO ]: Found specification of procedure arraysizeDLRunknownCLN2 [2018-06-22 11:29:28,390 INFO ]: Found implementation of procedure arraysizeDLRunknownCLN2 [2018-06-22 11:29:28,390 INFO ]: Specification and implementation of procedure dotprodDLRunknownCLN4 given in one single declaration [2018-06-22 11:29:28,391 INFO ]: Found specification of procedure dotprodDLRunknownCLN4 [2018-06-22 11:29:28,391 INFO ]: Found implementation of procedure dotprodDLRunknownCLN4 [2018-06-22 11:29:28,391 INFO ]: Specification and implementation of procedure make_arrayDLRunknownCLN13 given in one single declaration [2018-06-22 11:29:28,391 INFO ]: Found specification of procedure make_arrayDLRunknownCLN13 [2018-06-22 11:29:28,391 INFO ]: Found implementation of procedure make_arrayDLRunknownCLN13 [2018-06-22 11:29:28,391 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:29:28,391 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:29:28,391 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 11:29:28,792 INFO ]: Using library mode [2018-06-22 11:29:28,793 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:29:28 BoogieIcfgContainer [2018-06-22 11:29:28,793 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:29:28,795 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:29:28,795 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:29:28,802 INFO ]: TraceAbstraction initialized [2018-06-22 11:29:28,802 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:29:28" (1/3) ... [2018-06-22 11:29:28,804 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd09d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:29:28, skipping insertion in model container [2018-06-22 11:29:28,804 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:29:28" (2/3) ... [2018-06-22 11:29:28,804 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd09d6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:29:28, skipping insertion in model container [2018-06-22 11:29:28,804 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:29:28" (3/3) ... [2018-06-22 11:29:28,806 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:29:28,817 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:29:28,829 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:29:28,867 INFO ]: Using default assertion order modulation [2018-06-22 11:29:28,868 INFO ]: Interprodecural is true [2018-06-22 11:29:28,868 INFO ]: Hoare is false [2018-06-22 11:29:28,868 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:29:28,868 INFO ]: Backedges is TWOTRACK [2018-06-22 11:29:28,868 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:29:28,868 INFO ]: Difference is false [2018-06-22 11:29:28,868 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:29:28,868 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:29:28,885 INFO ]: Start isEmpty. Operand 42 states. [2018-06-22 11:29:28,898 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:29:28,898 INFO ]: Found error trace [2018-06-22 11:29:28,899 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:29:28,899 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:28,905 INFO ]: Analyzing trace with hash 137753389, now seen corresponding path program 1 times [2018-06-22 11:29:28,907 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:28,907 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:28,943 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:28,943 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:28,943 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:28,957 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:28,981 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:29:28,983 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:29:28,983 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:29:28,984 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:29:28,995 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:29:28,996 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:29:28,998 INFO ]: Start difference. First operand 42 states. Second operand 2 states. [2018-06-22 11:29:29,024 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:29,024 INFO ]: Finished difference Result 38 states and 45 transitions. [2018-06-22 11:29:29,024 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:29:29,026 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:29:29,026 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:29,040 INFO ]: With dead ends: 38 [2018-06-22 11:29:29,041 INFO ]: Without dead ends: 36 [2018-06-22 11:29:29,043 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:29:29,058 INFO ]: Start minimizeSevpa. Operand 36 states. [2018-06-22 11:29:29,081 INFO ]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-06-22 11:29:29,082 INFO ]: Start removeUnreachable. Operand 36 states. [2018-06-22 11:29:29,084 INFO ]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-06-22 11:29:29,085 INFO ]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 5 [2018-06-22 11:29:29,085 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:29,085 INFO ]: Abstraction has 36 states and 43 transitions. [2018-06-22 11:29:29,085 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:29:29,085 INFO ]: Start isEmpty. Operand 36 states and 43 transitions. [2018-06-22 11:29:29,088 INFO ]: Finished isEmpty. Found accepting run of length 30 [2018-06-22 11:29:29,088 INFO ]: Found error trace [2018-06-22 11:29:29,088 INFO ]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:29,089 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:29,089 INFO ]: Analyzing trace with hash -1297983136, now seen corresponding path program 1 times [2018-06-22 11:29:29,089 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:29,089 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:29,089 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:29,089 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:29,089 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:29,152 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:29,762 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:29:29,762 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:29:29,762 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 11:29:29,780 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:29,806 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:29,816 INFO ]: Computing forward predicates... [2018-06-22 11:29:30,595 WARN ]: Spent 162.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 9 [2018-06-22 11:29:30,608 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:29:30,637 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:29:30,637 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2018-06-22 11:29:30,637 INFO ]: Interpolant automaton has 15 states [2018-06-22 11:29:30,638 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 11:29:30,638 INFO ]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-06-22 11:29:30,638 INFO ]: Start difference. First operand 36 states and 43 transitions. Second operand 15 states. [2018-06-22 11:29:31,334 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:31,334 INFO ]: Finished difference Result 40 states and 49 transitions. [2018-06-22 11:29:31,334 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:29:31,334 INFO ]: Start accepts. Automaton has 15 states. Word has length 29 [2018-06-22 11:29:31,335 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:31,336 INFO ]: With dead ends: 40 [2018-06-22 11:29:31,336 INFO ]: Without dead ends: 40 [2018-06-22 11:29:31,337 INFO ]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2018-06-22 11:29:31,338 INFO ]: Start minimizeSevpa. Operand 40 states. [2018-06-22 11:29:31,347 INFO ]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-06-22 11:29:31,347 INFO ]: Start removeUnreachable. Operand 40 states. [2018-06-22 11:29:31,349 INFO ]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2018-06-22 11:29:31,349 INFO ]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 29 [2018-06-22 11:29:31,349 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:31,349 INFO ]: Abstraction has 40 states and 49 transitions. [2018-06-22 11:29:31,349 INFO ]: Interpolant automaton has 15 states. [2018-06-22 11:29:31,349 INFO ]: Start isEmpty. Operand 40 states and 49 transitions. [2018-06-22 11:29:31,351 INFO ]: Finished isEmpty. Found accepting run of length 58 [2018-06-22 11:29:31,351 INFO ]: Found error trace [2018-06-22 11:29:31,351 INFO ]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:31,351 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:31,351 INFO ]: Analyzing trace with hash 1696288460, now seen corresponding path program 1 times [2018-06-22 11:29:31,351 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:31,351 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:31,352 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:31,352 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:31,352 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:31,384 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:31,591 INFO ]: Checked inductivity of 34 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-22 11:29:31,592 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:29:31,592 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 11:29:31,606 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:31,637 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:31,641 INFO ]: Computing forward predicates... [2018-06-22 11:29:31,837 INFO ]: Checked inductivity of 34 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-06-22 11:29:31,867 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:29:31,868 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2018-06-22 11:29:31,868 INFO ]: Interpolant automaton has 18 states [2018-06-22 11:29:31,868 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 11:29:31,868 INFO ]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:29:31,868 INFO ]: Start difference. First operand 40 states and 49 transitions. Second operand 18 states. [2018-06-22 11:29:32,220 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:32,220 INFO ]: Finished difference Result 43 states and 53 transitions. [2018-06-22 11:29:32,221 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-06-22 11:29:32,221 INFO ]: Start accepts. Automaton has 18 states. Word has length 57 [2018-06-22 11:29:32,221 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:32,222 INFO ]: With dead ends: 43 [2018-06-22 11:29:32,222 INFO ]: Without dead ends: 43 [2018-06-22 11:29:32,223 INFO ]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=362, Unknown=0, NotChecked=0, Total=420 [2018-06-22 11:29:32,223 INFO ]: Start minimizeSevpa. Operand 43 states. [2018-06-22 11:29:32,229 INFO ]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-06-22 11:29:32,229 INFO ]: Start removeUnreachable. Operand 41 states. [2018-06-22 11:29:32,230 INFO ]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2018-06-22 11:29:32,230 INFO ]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 57 [2018-06-22 11:29:32,231 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:32,231 INFO ]: Abstraction has 41 states and 51 transitions. [2018-06-22 11:29:32,231 INFO ]: Interpolant automaton has 18 states. [2018-06-22 11:29:32,231 INFO ]: Start isEmpty. Operand 41 states and 51 transitions. [2018-06-22 11:29:32,233 INFO ]: Finished isEmpty. Found accepting run of length 90 [2018-06-22 11:29:32,233 INFO ]: Found error trace [2018-06-22 11:29:32,234 INFO ]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:32,234 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:32,234 INFO ]: Analyzing trace with hash 1576387224, now seen corresponding path program 1 times [2018-06-22 11:29:32,234 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:32,234 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:32,235 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:32,235 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:32,235 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:32,245 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 11:29:32,246 INFO ]: Advancing trace checker [2018-06-22 11:29:32,246 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 11:29:32,272 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:32,313 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:32,320 INFO ]: Computing forward predicates... [2018-06-22 11:29:32,674 INFO ]: Checked inductivity of 109 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-06-22 11:29:32,694 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:29:32,694 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-06-22 11:29:32,695 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:29:32,695 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:29:32,695 INFO ]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:29:32,695 INFO ]: Start difference. First operand 41 states and 51 transitions. Second operand 16 states. [2018-06-22 11:29:33,391 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:33,391 INFO ]: Finished difference Result 58 states and 81 transitions. [2018-06-22 11:29:33,391 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 11:29:33,391 INFO ]: Start accepts. Automaton has 16 states. Word has length 89 [2018-06-22 11:29:33,392 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:33,394 INFO ]: With dead ends: 58 [2018-06-22 11:29:33,394 INFO ]: Without dead ends: 57 [2018-06-22 11:29:33,394 INFO ]: 0 DeclaredPredicates, 101 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2018-06-22 11:29:33,394 INFO ]: Start minimizeSevpa. Operand 57 states. [2018-06-22 11:29:33,405 INFO ]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-06-22 11:29:33,405 INFO ]: Start removeUnreachable. Operand 57 states. [2018-06-22 11:29:33,407 INFO ]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2018-06-22 11:29:33,408 INFO ]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 89 [2018-06-22 11:29:33,408 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:33,408 INFO ]: Abstraction has 57 states and 79 transitions. [2018-06-22 11:29:33,408 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:29:33,408 INFO ]: Start isEmpty. Operand 57 states and 79 transitions. [2018-06-22 11:29:33,411 INFO ]: Finished isEmpty. Found accepting run of length 118 [2018-06-22 11:29:33,411 INFO ]: Found error trace [2018-06-22 11:29:33,412 INFO ]: trace histogram [8, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:33,412 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:33,412 INFO ]: Analyzing trace with hash 1425077252, now seen corresponding path program 1 times [2018-06-22 11:29:33,412 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:33,412 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:33,413 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:33,413 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:33,413 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:33,421 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 11:29:33,421 INFO ]: Advancing trace checker [2018-06-22 11:29:33,421 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2018-06-22 11:29:33,434 INFO ]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 11:29:33,490 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:33,498 INFO ]: Computing forward predicates... [2018-06-22 11:29:33,796 INFO ]: Checked inductivity of 207 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2018-06-22 11:29:33,815 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:29:33,816 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-06-22 11:29:33,816 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:29:33,816 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:29:33,816 INFO ]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:29:33,816 INFO ]: Start difference. First operand 57 states and 79 transitions. Second operand 9 states. [2018-06-22 11:29:34,045 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:34,045 INFO ]: Finished difference Result 63 states and 87 transitions. [2018-06-22 11:29:34,046 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-06-22 11:29:34,046 INFO ]: Start accepts. Automaton has 9 states. Word has length 117 [2018-06-22 11:29:34,047 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:34,048 INFO ]: With dead ends: 63 [2018-06-22 11:29:34,048 INFO ]: Without dead ends: 62 [2018-06-22 11:29:34,049 INFO ]: 0 DeclaredPredicates, 120 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-06-22 11:29:34,049 INFO ]: Start minimizeSevpa. Operand 62 states. [2018-06-22 11:29:34,056 INFO ]: Finished minimizeSevpa. Reduced states from 62 to 55. [2018-06-22 11:29:34,056 INFO ]: Start removeUnreachable. Operand 55 states. [2018-06-22 11:29:34,057 INFO ]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions. [2018-06-22 11:29:34,057 INFO ]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 117 [2018-06-22 11:29:34,058 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:34,058 INFO ]: Abstraction has 55 states and 74 transitions. [2018-06-22 11:29:34,058 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:29:34,058 INFO ]: Start isEmpty. Operand 55 states and 74 transitions. [2018-06-22 11:29:34,063 INFO ]: Finished isEmpty. Found accepting run of length 178 [2018-06-22 11:29:34,063 INFO ]: Found error trace [2018-06-22 11:29:34,063 INFO ]: trace histogram [12, 12, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:34,063 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:34,063 INFO ]: Analyzing trace with hash -1524385988, now seen corresponding path program 2 times [2018-06-22 11:29:34,063 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:34,063 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:34,064 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:34,064 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:29:34,064 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:34,071 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 11:29:34,071 INFO ]: Advancing trace checker [2018-06-22 11:29:34,071 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 11:29:34,084 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:29:34,169 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:29:34,169 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:34,189 INFO ]: Computing forward predicates... [2018-06-22 11:29:34,400 WARN ]: Spent 175.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 6 [2018-06-22 11:29:34,701 INFO ]: Checked inductivity of 530 backedges. 38 proven. 89 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2018-06-22 11:29:34,722 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:29:34,722 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2018-06-22 11:29:34,723 INFO ]: Interpolant automaton has 16 states [2018-06-22 11:29:34,723 INFO ]: Constructing interpolant automaton starting with 16 interpolants. [2018-06-22 11:29:34,723 INFO ]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2018-06-22 11:29:34,723 INFO ]: Start difference. First operand 55 states and 74 transitions. Second operand 16 states. [2018-06-22 11:29:35,028 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:35,028 INFO ]: Finished difference Result 58 states and 77 transitions. [2018-06-22 11:29:35,029 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-06-22 11:29:35,029 INFO ]: Start accepts. Automaton has 16 states. Word has length 177 [2018-06-22 11:29:35,030 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:35,032 INFO ]: With dead ends: 58 [2018-06-22 11:29:35,032 INFO ]: Without dead ends: 58 [2018-06-22 11:29:35,033 INFO ]: 0 DeclaredPredicates, 184 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2018-06-22 11:29:35,033 INFO ]: Start minimizeSevpa. Operand 58 states. [2018-06-22 11:29:35,040 INFO ]: Finished minimizeSevpa. Reduced states from 58 to 55. [2018-06-22 11:29:35,040 INFO ]: Start removeUnreachable. Operand 55 states. [2018-06-22 11:29:35,042 INFO ]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions. [2018-06-22 11:29:35,042 INFO ]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 177 [2018-06-22 11:29:35,043 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:35,043 INFO ]: Abstraction has 55 states and 74 transitions. [2018-06-22 11:29:35,043 INFO ]: Interpolant automaton has 16 states. [2018-06-22 11:29:35,043 INFO ]: Start isEmpty. Operand 55 states and 74 transitions. [2018-06-22 11:29:35,046 INFO ]: Finished isEmpty. Found accepting run of length 210 [2018-06-22 11:29:35,046 INFO ]: Found error trace [2018-06-22 11:29:35,046 INFO ]: trace histogram [14, 14, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:35,046 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:35,047 INFO ]: Analyzing trace with hash -622268792, now seen corresponding path program 2 times [2018-06-22 11:29:35,047 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:35,047 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:35,048 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:35,048 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:29:35,048 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:35,057 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 11:29:35,057 INFO ]: Advancing trace checker [2018-06-22 11:29:35,057 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 11:29:35,073 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:29:35,164 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:29:35,164 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:35,171 INFO ]: Computing forward predicates... [2018-06-22 11:29:35,413 INFO ]: Checked inductivity of 771 backedges. 456 proven. 6 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2018-06-22 11:29:35,436 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:29:35,436 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2018-06-22 11:29:35,437 INFO ]: Interpolant automaton has 9 states [2018-06-22 11:29:35,437 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-22 11:29:35,437 INFO ]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-06-22 11:29:35,437 INFO ]: Start difference. First operand 55 states and 74 transitions. Second operand 9 states. [2018-06-22 11:29:35,700 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:35,700 INFO ]: Finished difference Result 62 states and 88 transitions. [2018-06-22 11:29:35,701 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-06-22 11:29:35,701 INFO ]: Start accepts. Automaton has 9 states. Word has length 209 [2018-06-22 11:29:35,701 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:35,703 INFO ]: With dead ends: 62 [2018-06-22 11:29:35,703 INFO ]: Without dead ends: 62 [2018-06-22 11:29:35,703 INFO ]: 0 DeclaredPredicates, 212 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:29:35,703 INFO ]: Start minimizeSevpa. Operand 62 states. [2018-06-22 11:29:35,712 INFO ]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-06-22 11:29:35,712 INFO ]: Start removeUnreachable. Operand 61 states. [2018-06-22 11:29:35,713 INFO ]: Finished removeUnreachable. Reduced from 61 states to 61 states and 85 transitions. [2018-06-22 11:29:35,713 INFO ]: Start accepts. Automaton has 61 states and 85 transitions. Word has length 209 [2018-06-22 11:29:35,714 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:35,714 INFO ]: Abstraction has 61 states and 85 transitions. [2018-06-22 11:29:35,714 INFO ]: Interpolant automaton has 9 states. [2018-06-22 11:29:35,714 INFO ]: Start isEmpty. Operand 61 states and 85 transitions. [2018-06-22 11:29:35,722 INFO ]: Finished isEmpty. Found accepting run of length 270 [2018-06-22 11:29:35,722 INFO ]: Found error trace [2018-06-22 11:29:35,723 INFO ]: trace histogram [18, 18, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:29:35,725 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:29:35,725 INFO ]: Analyzing trace with hash 763601088, now seen corresponding path program 3 times [2018-06-22 11:29:35,725 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:29:35,725 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:29:35,726 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:35,726 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 11:29:35,726 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:29:35,736 ERROR]: Caught known exception: Unsupported non-linear arithmetic [2018-06-22 11:29:35,736 INFO ]: Advancing trace checker [2018-06-22 11:29:35,736 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-06-22 11:29:35,753 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 11:29:35,859 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2018-06-22 11:29:35,859 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:29:35,871 INFO ]: Computing forward predicates... [2018-06-22 11:29:36,205 INFO ]: Checked inductivity of 1327 backedges. 186 proven. 43 refuted. 0 times theorem prover too weak. 1098 trivial. 0 not checked. [2018-06-22 11:29:36,228 INFO ]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-06-22 11:29:36,228 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2018-06-22 11:29:36,228 INFO ]: Interpolant automaton has 18 states [2018-06-22 11:29:36,229 INFO ]: Constructing interpolant automaton starting with 18 interpolants. [2018-06-22 11:29:36,229 INFO ]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2018-06-22 11:29:36,229 INFO ]: Start difference. First operand 61 states and 85 transitions. Second operand 18 states. [2018-06-22 11:29:36,682 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:29:36,682 INFO ]: Finished difference Result 62 states and 96 transitions. [2018-06-22 11:29:36,682 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-06-22 11:29:36,682 INFO ]: Start accepts. Automaton has 18 states. Word has length 269 [2018-06-22 11:29:36,684 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:29:36,684 INFO ]: With dead ends: 62 [2018-06-22 11:29:36,684 INFO ]: Without dead ends: 0 [2018-06-22 11:29:36,684 INFO ]: 0 DeclaredPredicates, 279 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2018-06-22 11:29:36,684 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:29:36,685 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:29:36,685 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:29:36,685 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:29:36,685 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 269 [2018-06-22 11:29:36,685 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:29:36,685 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:29:36,685 INFO ]: Interpolant automaton has 18 states. [2018-06-22 11:29:36,685 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:29:36,685 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:29:36,689 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:29:36 BoogieIcfgContainer [2018-06-22 11:29:36,689 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:29:36,690 INFO ]: Toolchain (without parser) took 8414.52 ms. Allocated memory was 307.8 MB in the beginning and 420.0 MB in the end (delta: 112.2 MB). Free memory was 259.1 MB in the beginning and 228.8 MB in the end (delta: 30.4 MB). Peak memory consumption was 142.6 MB. Max. memory is 3.6 GB. [2018-06-22 11:29:36,691 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. [2018-06-22 11:29:36,691 INFO ]: ChcToBoogie took 54.19 ms. Allocated memory is still 307.8 MB. Free memory was 259.1 MB in the beginning and 257.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:29:36,692 INFO ]: Boogie Preprocessor took 37.86 ms. Allocated memory is still 307.8 MB. Free memory was 257.2 MB in the beginning and 256.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 11:29:36,692 INFO ]: RCFGBuilder took 417.54 ms. Allocated memory is still 307.8 MB. Free memory was 255.2 MB in the beginning and 243.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:29:36,693 INFO ]: TraceAbstraction took 7894.64 ms. Allocated memory was 307.8 MB in the beginning and 420.0 MB in the end (delta: 112.2 MB). Free memory was 243.2 MB in the beginning and 228.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 126.6 MB. Max. memory is 3.6 GB. [2018-06-22 11:29:36,697 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 54.19 ms. Allocated memory is still 307.8 MB. Free memory was 259.1 MB in the beginning and 257.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 37.86 ms. Allocated memory is still 307.8 MB. Free memory was 257.2 MB in the beginning and 256.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 417.54 ms. Allocated memory is still 307.8 MB. Free memory was 255.2 MB in the beginning and 243.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 7894.64 ms. Allocated memory was 307.8 MB in the beginning and 420.0 MB in the end (delta: 112.2 MB). Free memory was 243.2 MB in the beginning and 228.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 126.6 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 42 locations, 1 error locations. SAFE Result, 7.8s OverallTime, 8 OverallIterations, 18 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 320 SDtfs, 50 SDslu, 2303 SDs, 0 SdLazy, 1634 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1013 GetRequests, 884 SyntacticMatches, 6 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=7, 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, 8 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1038 NumberOfCodeBlocks, 1030 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1028 ConstructedInterpolants, 0 QuantifiedInterpolants, 260064 SizeOfPredicates, 81 NumberOfNonLiveVariables, 3046 ConjunctsInSsa, 201 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 2809/3018 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-29-36-708.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dotprod.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-29-36-708.csv Received shutdown request...