java -Xss1g -Xmx8000000000 -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-comp18-benchmarks/lra/chc-lra-0124.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-20 23:11:49,750 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-20 23:11:49,751 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-20 23:11:49,763 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-20 23:11:49,764 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-20 23:11:49,765 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-20 23:11:49,766 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-20 23:11:49,768 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-20 23:11:49,769 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-20 23:11:49,770 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-20 23:11:49,771 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-20 23:11:49,771 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-20 23:11:49,772 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-20 23:11:49,774 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-20 23:11:49,774 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-20 23:11:49,775 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-20 23:11:49,777 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-20 23:11:49,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-20 23:11:49,783 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-20 23:11:49,784 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-20 23:11:49,785 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-20 23:11:49,788 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-20 23:11:49,788 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-20 23:11:49,788 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-20 23:11:49,789 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-20 23:11:49,790 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-20 23:11:49,791 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-20 23:11:49,792 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-20 23:11:49,793 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-20 23:11:49,793 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-20 23:11:49,794 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-20 23:11:49,794 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-20 23:11:49,795 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-20 23:11:49,795 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-20 23:11:49,796 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-20 23:11:49,796 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-20 23:11:49,810 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-20 23:11:49,811 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-20 23:11:49,811 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-20 23:11:49,811 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-20 23:11:49,812 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-20 23:11:49,812 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-20 23:11:49,813 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-20 23:11:49,813 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-20 23:11:49,813 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-20 23:11:49,813 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-20 23:11:49,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-20 23:11:49,814 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-20 23:11:49,814 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-20 23:11:49,814 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-20 23:11:49,814 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-20 23:11:49,815 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-20 23:11:49,815 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-20 23:11:49,815 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-20 23:11:49,815 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-20 23:11:49,816 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-20 23:11:49,817 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-20 23:11:49,873 INFO ]: Repository-Root is: /tmp [2018-06-20 23:11:49,886 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-20 23:11:49,889 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-20 23:11:49,890 INFO ]: Initializing SmtParser... [2018-06-20 23:11:49,891 INFO ]: SmtParser initialized [2018-06-20 23:11:49,891 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp18-benchmarks/lra/chc-lra-0124.smt2 [2018-06-20 23:11:49,892 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 [2018-06-20 23:11:49,986 INFO ]: Executing SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0124.smt2 unknown [2018-06-20 23:11:52,008 INFO ]: Succesfully executed SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0124.smt2 [2018-06-20 23:11:52,013 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-20 23:11:52,018 INFO ]: Walking toolchain with 4 elements. [2018-06-20 23:11:52,019 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-20 23:11:52,019 INFO ]: Initializing ChcToBoogie... [2018-06-20 23:11:52,020 INFO ]: ChcToBoogie initialized [2018-06-20 23:11:52,023 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 20.06 11:11:52" (1/1) ... [2018-06-20 23:11:52,119 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:11:52 Unit [2018-06-20 23:11:52,119 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-20 23:11:52,120 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-20 23:11:52,120 INFO ]: Initializing Boogie Preprocessor... [2018-06-20 23:11:52,120 INFO ]: Boogie Preprocessor initialized [2018-06-20 23:11:52,143 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:11:52" (1/1) ... [2018-06-20 23:11:52,143 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:11:52" (1/1) ... [2018-06-20 23:11:52,192 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:11:52" (1/1) ... [2018-06-20 23:11:52,193 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:11:52" (1/1) ... [2018-06-20 23:11:52,244 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:11:52" (1/1) ... [2018-06-20 23:11:52,245 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:11:52" (1/1) ... [2018-06-20 23:11:52,262 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:11:52" (1/1) ... [2018-06-20 23:11:52,282 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-20 23:11:52,283 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-20 23:11:52,283 INFO ]: Initializing RCFGBuilder... [2018-06-20 23:11:52,283 INFO ]: RCFGBuilder initialized [2018-06-20 23:11:52,283 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:11:52" (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) [2018-06-20 23:11:52,298 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-20 23:11:52,298 INFO ]: Found specification of procedure False [2018-06-20 23:11:52,298 INFO ]: Found implementation of procedure False [2018-06-20 23:11:52,298 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-20 23:11:52,298 INFO ]: Found specification of procedure state [2018-06-20 23:11:52,298 INFO ]: Found implementation of procedure state [2018-06-20 23:11:52,298 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-20 23:11:52,298 INFO ]: Found specification of procedure Ultimate.START [2018-06-20 23:11:52,298 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 [2018-06-20 23:11:54,839 INFO ]: Using library mode [2018-06-20 23:11:54,840 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 11:11:54 BoogieIcfgContainer [2018-06-20 23:11:54,840 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-20 23:11:54,843 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-20 23:11:54,843 INFO ]: Initializing TraceAbstraction... [2018-06-20 23:11:54,847 INFO ]: TraceAbstraction initialized [2018-06-20 23:11:54,847 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 20.06 11:11:52" (1/3) ... [2018-06-20 23:11:54,848 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e820cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 20.06 11:11:54, skipping insertion in model container [2018-06-20 23:11:54,848 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 20.06 11:11:52" (2/3) ... [2018-06-20 23:11:54,848 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e820cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.06 11:11:54, skipping insertion in model container [2018-06-20 23:11:54,848 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.06 11:11:54" (3/3) ... [2018-06-20 23:11:54,851 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-20 23:11:54,860 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-20 23:11:54,872 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-20 23:11:54,925 INFO ]: Using default assertion order modulation [2018-06-20 23:11:54,926 INFO ]: Interprodecural is true [2018-06-20 23:11:54,926 INFO ]: Hoare is false [2018-06-20 23:11:54,926 INFO ]: Compute interpolants for FPandBP [2018-06-20 23:11:54,926 INFO ]: Backedges is TWOTRACK [2018-06-20 23:11:54,926 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-20 23:11:54,926 INFO ]: Difference is false [2018-06-20 23:11:54,926 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-20 23:11:54,926 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-20 23:11:54,949 INFO ]: Start isEmpty. Operand 13 states. [2018-06-20 23:11:54,968 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-20 23:11:54,969 INFO ]: Found error trace [2018-06-20 23:11:54,970 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:11:54,970 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:11:54,976 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-20 23:11:54,978 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:11:54,979 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:11:55,033 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:11:55,033 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:11:55,033 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:11:55,145 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:11:55,429 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-20 23:11:55,432 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-20 23:11:55,432 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-20 23:11:55,434 INFO ]: Interpolant automaton has 4 states [2018-06-20 23:11:55,452 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-20 23:11:55,452 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-20 23:11:55,454 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-20 23:11:55,796 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:11:55,796 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-20 23:11:55,797 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-20 23:11:55,799 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-20 23:11:55,799 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:11:55,812 INFO ]: With dead ends: 13 [2018-06-20 23:11:55,812 INFO ]: Without dead ends: 13 [2018-06-20 23:11:55,814 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 [2018-06-20 23:11:55,833 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-20 23:11:55,856 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-20 23:11:55,858 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-20 23:11:55,858 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-20 23:11:55,860 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-20 23:11:55,860 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:11:55,860 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-20 23:11:55,860 INFO ]: Interpolant automaton has 4 states. [2018-06-20 23:11:55,860 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-20 23:11:55,861 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-20 23:11:55,861 INFO ]: Found error trace [2018-06-20 23:11:55,862 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:11:55,862 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:11:55,862 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-20 23:11:55,862 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:11:55,862 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:11:55,863 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:11:55,863 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:11:55,863 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:11:56,474 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:11:57,396 WARN ]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-20 23:11:57,629 WARN ]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-06-20 23:11:57,953 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-20 23:11:57,953 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:11:57,953 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 [2018-06-20 23:11:57,961 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:11:58,371 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:11:58,417 INFO ]: Computing forward predicates... [2018-06-20 23:12:02,065 WARN ]: Spent 682.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-06-20 23:12:02,268 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-20 23:12:02,295 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 23:12:02,295 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-06-20 23:12:02,295 INFO ]: Interpolant automaton has 10 states [2018-06-20 23:12:02,295 INFO ]: Constructing interpolant automaton starting with 10 interpolants. [2018-06-20 23:12:02,296 INFO ]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-06-20 23:12:02,296 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 10 states. [2018-06-20 23:12:02,894 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:12:02,894 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-20 23:12:02,895 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-20 23:12:02,895 INFO ]: Start accepts. Automaton has 10 states. Word has length 13 [2018-06-20 23:12:02,895 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:12:02,896 INFO ]: With dead ends: 15 [2018-06-20 23:12:02,896 INFO ]: Without dead ends: 15 [2018-06-20 23:12:02,897 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-06-20 23:12:02,897 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-20 23:12:02,899 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-20 23:12:02,899 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-20 23:12:02,900 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-20 23:12:02,900 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-20 23:12:02,900 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:12:02,900 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-20 23:12:02,900 INFO ]: Interpolant automaton has 10 states. [2018-06-20 23:12:02,900 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-20 23:12:02,901 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-20 23:12:02,901 INFO ]: Found error trace [2018-06-20 23:12:02,901 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:12:02,901 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:12:02,901 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-20 23:12:02,901 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:12:02,901 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:12:02,902 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:12:02,902 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-20 23:12:02,902 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:12:03,890 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:12:05,018 WARN ]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-20 23:12:05,254 WARN ]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-20 23:12:05,554 WARN ]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-06-20 23:12:05,643 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-20 23:12:05,643 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:12:05,643 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 [2018-06-20 23:12:05,652 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-20 23:12:06,210 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-20 23:12:06,211 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:12:06,265 INFO ]: Computing forward predicates... [2018-06-20 23:12:10,056 WARN ]: Spent 269.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 29 [2018-06-20 23:12:10,119 INFO ]: Checked inductivity of 10 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-20 23:12:10,146 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-20 23:12:10,146 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-06-20 23:12:10,146 INFO ]: Interpolant automaton has 13 states [2018-06-20 23:12:10,146 INFO ]: Constructing interpolant automaton starting with 13 interpolants. [2018-06-20 23:12:10,147 INFO ]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-06-20 23:12:10,147 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 13 states. [2018-06-20 23:12:10,365 WARN ]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-06-20 23:12:10,826 WARN ]: Spent 154.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2018-06-20 23:12:10,921 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-20 23:12:10,921 INFO ]: Finished difference Result 19 states and 20 transitions. [2018-06-20 23:12:10,922 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-20 23:12:10,922 INFO ]: Start accepts. Automaton has 13 states. Word has length 17 [2018-06-20 23:12:10,922 INFO ]: Finished accepts. some prefix is accepted. [2018-06-20 23:12:10,922 INFO ]: With dead ends: 19 [2018-06-20 23:12:10,922 INFO ]: Without dead ends: 19 [2018-06-20 23:12:10,923 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2018-06-20 23:12:10,923 INFO ]: Start minimizeSevpa. Operand 19 states. [2018-06-20 23:12:10,925 INFO ]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-06-20 23:12:10,925 INFO ]: Start removeUnreachable. Operand 19 states. [2018-06-20 23:12:10,926 INFO ]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2018-06-20 23:12:10,926 INFO ]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2018-06-20 23:12:10,926 INFO ]: Finished accepts. word is rejected. [2018-06-20 23:12:10,926 INFO ]: Abstraction has 19 states and 20 transitions. [2018-06-20 23:12:10,926 INFO ]: Interpolant automaton has 13 states. [2018-06-20 23:12:10,926 INFO ]: Start isEmpty. Operand 19 states and 20 transitions. [2018-06-20 23:12:10,927 INFO ]: Finished isEmpty. Found accepting run of length 26 [2018-06-20 23:12:10,927 INFO ]: Found error trace [2018-06-20 23:12:10,927 INFO ]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-20 23:12:10,927 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-20 23:12:10,927 INFO ]: Analyzing trace with hash -434924750, now seen corresponding path program 3 times [2018-06-20 23:12:10,927 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-20 23:12:10,927 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-20 23:12:10,928 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:12:10,928 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-20 23:12:10,928 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-20 23:12:12,116 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:12:13,420 WARN ]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-20 23:12:13,787 WARN ]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-06-20 23:12:13,948 INFO ]: Checked inductivity of 36 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-06-20 23:12:13,948 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-20 23:12:13,948 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 [2018-06-20 23:12:13,968 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-20 23:12:15,005 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-06-20 23:12:15,005 INFO ]: Conjunction of SSA is unsat [2018-06-20 23:12:15,089 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-20 23:12:51,130 INFO ]: Timeout while computing interpolants [2018-06-20 23:12:51,330 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-20 23:12:51,330 WARN ]: Verification canceled [2018-06-20 23:12:51,334 WARN ]: Timeout [2018-06-20 23:12:51,334 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.06 11:12:51 BoogieIcfgContainer [2018-06-20 23:12:51,334 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-20 23:12:51,336 INFO ]: Toolchain (without parser) took 59321.60 ms. Allocated memory was 354.4 MB in the beginning and 2.8 GB in the end (delta: 2.4 GB). Free memory was 291.6 MB in the beginning and 707.9 MB in the end (delta: -416.3 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-06-20 23:12:51,336 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 303.0 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2018-06-20 23:12:51,337 INFO ]: ChcToBoogie took 100.28 ms. Allocated memory is still 354.4 MB. Free memory was 291.6 MB in the beginning and 284.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. [2018-06-20 23:12:51,337 INFO ]: Boogie Preprocessor took 162.05 ms. Allocated memory is still 354.4 MB. Free memory was 284.3 MB in the beginning and 274.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2018-06-20 23:12:51,337 INFO ]: RCFGBuilder took 2557.53 ms. Allocated memory was 354.4 MB in the beginning and 475.5 MB in the end (delta: 121.1 MB). Free memory was 274.4 MB in the beginning and 259.7 MB in the end (delta: 14.8 MB). Peak memory consumption was 227.3 MB. Max. memory is 7.1 GB. [2018-06-20 23:12:51,337 INFO ]: TraceAbstraction took 56491.00 ms. Allocated memory was 475.5 MB in the beginning and 2.8 GB in the end (delta: 2.3 GB). Free memory was 259.7 MB in the beginning and 707.9 MB in the end (delta: -448.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-06-20 23:12:51,339 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 303.0 MB. Free memory is still 268.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * ChcToBoogie took 100.28 ms. Allocated memory is still 354.4 MB. Free memory was 291.6 MB in the beginning and 284.3 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.05 ms. Allocated memory is still 354.4 MB. Free memory was 284.3 MB in the beginning and 274.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 2557.53 ms. Allocated memory was 354.4 MB in the beginning and 475.5 MB in the end (delta: 121.1 MB). Free memory was 274.4 MB in the beginning and 259.7 MB in the end (delta: 14.8 MB). Peak memory consumption was 227.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 56491.00 ms. Allocated memory was 475.5 MB in the beginning and 2.8 GB in the end (delta: 2.3 GB). Free memory was 259.7 MB in the beginning and 707.9 MB in the end (delta: -448.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 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 26 with TraceHistMax 5, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 75 quantified variables from 19 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 56.4s OverallTime, 4 OverallIterations, 5 TraceHistogramMax, 1.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 25 SDslu, 88 SDs, 0 SdLazy, 60 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 5676 SizeOfPredicates, 2479 NumberOfNonLiveVariables, 3843 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 9/26 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/chc-lra-0124.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-20_23-12-51-362.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/chc-lra-0124.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-20_23-12-51-362.csv Completed graceful shutdown