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/sum.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 11:36:21,816 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 11:36:21,818 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 11:36:21,831 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 11:36:21,831 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 11:36:21,834 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 11:36:21,835 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 11:36:21,837 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 11:36:21,838 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 11:36:21,839 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 11:36:21,841 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 11:36:21,842 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 11:36:21,843 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 11:36:21,844 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 11:36:21,844 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 11:36:21,845 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 11:36:21,847 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 11:36:21,849 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 11:36:21,850 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 11:36:21,852 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 11:36:21,853 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 11:36:21,855 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 11:36:21,855 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 11:36:21,856 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 11:36:21,857 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 11:36:21,858 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 11:36:21,858 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 11:36:21,859 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 11:36:21,860 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... 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[2018-06-22 11:36:21,864 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 11:36:21,877 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 11:36:21,878 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 11:36:21,878 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 11:36:21,878 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 11:36:21,879 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 11:36:21,879 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 11:36:21,879 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 11:36:21,880 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 11:36:21,880 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 11:36:21,880 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 11:36:21,880 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:36:21,880 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 11:36:21,881 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 11:36:21,881 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 11:36:21,881 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 11:36:21,881 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 11:36:21,881 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 11:36:21,882 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 11:36:21,882 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 11:36:21,883 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 11:36:21,883 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 11:36:21,929 INFO ]: Repository-Root is: /tmp [2018-06-22 11:36:21,944 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 11:36:21,950 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 11:36:21,951 INFO ]: Initializing SmtParser... [2018-06-22 11:36:21,952 INFO ]: SmtParser initialized [2018-06-22 11:36:21,952 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/sum.smt2 [2018-06-22 11:36:21,954 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 11:36:22,057 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/sum.smt2 unknown [2018-06-22 11:36:22,196 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/sum.smt2 [2018-06-22 11:36:22,203 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 11:36:22,211 INFO ]: Walking toolchain with 4 elements. [2018-06-22 11:36:22,212 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 11:36:22,212 INFO ]: Initializing ChcToBoogie... [2018-06-22 11:36:22,212 INFO ]: ChcToBoogie initialized [2018-06-22 11:36:22,216 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:36:22" (1/1) ... [2018-06-22 11:36:22,260 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:22 Unit [2018-06-22 11:36:22,261 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 11:36:22,261 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 11:36:22,261 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 11:36:22,261 INFO ]: Boogie Preprocessor initialized [2018-06-22 11:36:22,284 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:22" (1/1) ... [2018-06-22 11:36:22,284 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:22" (1/1) ... [2018-06-22 11:36:22,294 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:22" (1/1) ... [2018-06-22 11:36:22,294 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:22" (1/1) ... [2018-06-22 11:36:22,297 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:22" (1/1) ... [2018-06-22 11:36:22,298 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:22" (1/1) ... [2018-06-22 11:36:22,299 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:22" (1/1) ... [2018-06-22 11:36:22,300 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 11:36:22,301 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 11:36:22,301 INFO ]: Initializing RCFGBuilder... [2018-06-22 11:36:22,301 INFO ]: RCFGBuilder initialized [2018-06-22 11:36:22,302 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:22" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 11:36:22,318 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 11:36:22,318 INFO ]: Found specification of procedure False [2018-06-22 11:36:22,318 INFO ]: Found implementation of procedure False [2018-06-22 11:36:22,318 INFO ]: Specification and implementation of procedure sumDLRunknownCLN2 given in one single declaration [2018-06-22 11:36:22,318 INFO ]: Found specification of procedure sumDLRunknownCLN2 [2018-06-22 11:36:22,318 INFO ]: Found implementation of procedure sumDLRunknownCLN2 [2018-06-22 11:36:22,318 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 11:36:22,318 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 11:36:22,319 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 11:36:22,515 INFO ]: Using library mode [2018-06-22 11:36:22,516 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:36:22 BoogieIcfgContainer [2018-06-22 11:36:22,516 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 11:36:22,520 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 11:36:22,520 INFO ]: Initializing TraceAbstraction... [2018-06-22 11:36:22,524 INFO ]: TraceAbstraction initialized [2018-06-22 11:36:22,524 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 11:36:22" (1/3) ... [2018-06-22 11:36:22,525 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5498add0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 11:36:22, skipping insertion in model container [2018-06-22 11:36:22,525 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 11:36:22" (2/3) ... [2018-06-22 11:36:22,525 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5498add0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 11:36:22, skipping insertion in model container [2018-06-22 11:36:22,525 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 11:36:22" (3/3) ... [2018-06-22 11:36:22,528 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 11:36:22,540 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 11:36:22,551 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 11:36:22,599 INFO ]: Using default assertion order modulation [2018-06-22 11:36:22,600 INFO ]: Interprodecural is true [2018-06-22 11:36:22,600 INFO ]: Hoare is false [2018-06-22 11:36:22,600 INFO ]: Compute interpolants for FPandBP [2018-06-22 11:36:22,600 INFO ]: Backedges is TWOTRACK [2018-06-22 11:36:22,600 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 11:36:22,600 INFO ]: Difference is false [2018-06-22 11:36:22,600 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 11:36:22,600 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 11:36:22,636 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 11:36:22,654 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-22 11:36:22,654 INFO ]: Found error trace [2018-06-22 11:36:22,655 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-22 11:36:22,655 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:22,659 INFO ]: Analyzing trace with hash 53229675, now seen corresponding path program 1 times [2018-06-22 11:36:22,661 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:22,661 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:22,703 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:22,703 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:22,703 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:22,722 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:22,743 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:36:22,745 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:36:22,745 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-22 11:36:22,746 INFO ]: Interpolant automaton has 2 states [2018-06-22 11:36:22,760 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-22 11:36:22,760 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-22 11:36:22,763 INFO ]: Start difference. First operand 13 states. Second operand 2 states. [2018-06-22 11:36:22,787 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:22,788 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 11:36:22,788 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-22 11:36:22,789 INFO ]: Start accepts. Automaton has 2 states. Word has length 5 [2018-06-22 11:36:22,789 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:22,809 INFO ]: With dead ends: 11 [2018-06-22 11:36:22,809 INFO ]: Without dead ends: 11 [2018-06-22 11:36:22,811 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 11:36:22,827 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-22 11:36:22,845 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-22 11:36:22,846 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-22 11:36:22,847 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-06-22 11:36:22,848 INFO ]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 5 [2018-06-22 11:36:22,848 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:22,848 INFO ]: Abstraction has 11 states and 12 transitions. [2018-06-22 11:36:22,848 INFO ]: Interpolant automaton has 2 states. [2018-06-22 11:36:22,849 INFO ]: Start isEmpty. Operand 11 states and 12 transitions. [2018-06-22 11:36:22,850 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 11:36:22,850 INFO ]: Found error trace [2018-06-22 11:36:22,850 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:22,850 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:22,850 INFO ]: Analyzing trace with hash 2123728052, now seen corresponding path program 1 times [2018-06-22 11:36:22,850 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:22,850 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:22,852 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:22,852 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:22,852 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:22,875 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:23,014 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 11:36:23,014 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 11:36:23,014 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 11:36:23,016 INFO ]: Interpolant automaton has 4 states [2018-06-22 11:36:23,016 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 11:36:23,017 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:36:23,017 INFO ]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-06-22 11:36:23,080 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:23,080 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 11:36:23,081 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 11:36:23,081 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 11:36:23,081 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:23,084 INFO ]: With dead ends: 13 [2018-06-22 11:36:23,084 INFO ]: Without dead ends: 13 [2018-06-22 11:36:23,085 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 11:36:23,085 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 11:36:23,089 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 11:36:23,090 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 11:36:23,090 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 11:36:23,090 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 11:36:23,090 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:23,090 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 11:36:23,090 INFO ]: Interpolant automaton has 4 states. [2018-06-22 11:36:23,090 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 11:36:23,091 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 11:36:23,091 INFO ]: Found error trace [2018-06-22 11:36:23,091 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:23,091 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:23,091 INFO ]: Analyzing trace with hash -190937962, now seen corresponding path program 1 times [2018-06-22 11:36:23,091 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:23,091 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:23,092 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:23,092 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:23,092 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:23,106 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:23,222 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:36:23,222 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:23,222 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 11:36:23,233 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:23,274 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:23,285 INFO ]: Computing forward predicates... [2018-06-22 11:36:23,351 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 11:36:23,377 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:23,377 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-06-22 11:36:23,377 INFO ]: Interpolant automaton has 6 states [2018-06-22 11:36:23,377 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-22 11:36:23,377 INFO ]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-06-22 11:36:23,377 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 6 states. [2018-06-22 11:36:23,561 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:23,561 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 11:36:23,561 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 11:36:23,562 INFO ]: Start accepts. Automaton has 6 states. Word has length 13 [2018-06-22 11:36:23,562 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:23,562 INFO ]: With dead ends: 15 [2018-06-22 11:36:23,562 INFO ]: Without dead ends: 15 [2018-06-22 11:36:23,563 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:36:23,563 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 11:36:23,567 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 11:36:23,567 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 11:36:23,568 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 11:36:23,568 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 11:36:23,568 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:23,568 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 11:36:23,568 INFO ]: Interpolant automaton has 6 states. [2018-06-22 11:36:23,568 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 11:36:23,569 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 11:36:23,569 INFO ]: Found error trace [2018-06-22 11:36:23,569 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 11:36:23,569 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 11:36:23,569 INFO ]: Analyzing trace with hash -795375112, now seen corresponding path program 2 times [2018-06-22 11:36:23,569 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 11:36:23,569 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 11:36:23,570 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:23,570 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 11:36:23,570 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 11:36:23,588 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:23,946 INFO ]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:36:23,946 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 11:36:23,946 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 11:36:23,956 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 11:36:24,001 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 11:36:24,001 INFO ]: Conjunction of SSA is unsat [2018-06-22 11:36:24,004 INFO ]: Computing forward predicates... [2018-06-22 11:36:24,043 INFO ]: Checked inductivity of 10 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 11:36:24,064 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 11:36:24,064 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-06-22 11:36:24,065 INFO ]: Interpolant automaton has 8 states [2018-06-22 11:36:24,065 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 11:36:24,065 INFO ]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-06-22 11:36:24,065 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2018-06-22 11:36:24,260 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 11:36:24,260 INFO ]: Finished difference Result 11 states and 12 transitions. [2018-06-22 11:36:24,261 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 11:36:24,261 INFO ]: Start accepts. Automaton has 8 states. Word has length 17 [2018-06-22 11:36:24,261 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 11:36:24,261 INFO ]: With dead ends: 11 [2018-06-22 11:36:24,261 INFO ]: Without dead ends: 0 [2018-06-22 11:36:24,262 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-06-22 11:36:24,262 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 11:36:24,262 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 11:36:24,262 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 11:36:24,262 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 11:36:24,262 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-06-22 11:36:24,262 INFO ]: Finished accepts. word is rejected. [2018-06-22 11:36:24,262 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 11:36:24,262 INFO ]: Interpolant automaton has 8 states. [2018-06-22 11:36:24,262 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 11:36:24,262 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 11:36:24,270 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 11:36:24 BoogieIcfgContainer [2018-06-22 11:36:24,270 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 11:36:24,271 INFO ]: Toolchain (without parser) took 2068.21 ms. Allocated memory is still 303.0 MB. Free memory was 257.4 MB in the beginning and 193.0 MB in the end (delta: 64.4 MB). Peak memory consumption was 64.4 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:24,273 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 303.0 MB. Free memory is still 265.5 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 11:36:24,273 INFO ]: ChcToBoogie took 49.40 ms. Allocated memory is still 303.0 MB. Free memory was 257.4 MB in the beginning and 255.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:24,275 INFO ]: Boogie Preprocessor took 39.12 ms. Allocated memory is still 303.0 MB. Free memory was 255.4 MB in the beginning and 253.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:24,275 INFO ]: RCFGBuilder took 214.95 ms. Allocated memory is still 303.0 MB. Free memory was 253.4 MB in the beginning and 247.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:24,276 INFO ]: TraceAbstraction took 1750.34 ms. Allocated memory is still 303.0 MB. Free memory was 247.4 MB in the beginning and 193.0 MB in the end (delta: 54.4 MB). Peak memory consumption was 54.4 MB. Max. memory is 3.6 GB. [2018-06-22 11:36:24,285 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 303.0 MB. Free memory is still 265.5 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 49.40 ms. Allocated memory is still 303.0 MB. Free memory was 257.4 MB in the beginning and 255.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 39.12 ms. Allocated memory is still 303.0 MB. Free memory was 255.4 MB in the beginning and 253.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 214.95 ms. Allocated memory is still 303.0 MB. Free memory was 253.4 MB in the beginning and 247.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1750.34 ms. Allocated memory is still 303.0 MB. Free memory was 247.4 MB in the beginning and 193.0 MB in the end (delta: 54.4 MB). Peak memory consumption was 54.4 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 3 procedures, 13 locations, 1 error locations. SAFE Result, 1.6s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 6 SDslu, 61 SDs, 0 SdLazy, 49 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 2224 SizeOfPredicates, 11 NumberOfNonLiveVariables, 91 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 12/26 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/sum.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_11-36-24-302.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sum.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_11-36-24-302.csv Received shutdown request...