java -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-0003.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3d12b04 [2018-06-19 23:39:52,698 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-19 23:39:52,700 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-19 23:39:52,713 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-19 23:39:52,713 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-19 23:39:52,714 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-19 23:39:52,715 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-19 23:39:52,717 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-19 23:39:52,719 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-19 23:39:52,719 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-19 23:39:52,720 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-19 23:39:52,720 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-19 23:39:52,721 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-19 23:39:52,723 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-19 23:39:52,724 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-19 23:39:52,725 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-19 23:39:52,727 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-19 23:39:52,740 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-19 23:39:52,741 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-19 23:39:52,742 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-19 23:39:52,743 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-19 23:39:52,745 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-19 23:39:52,746 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-19 23:39:52,746 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-19 23:39:52,747 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-19 23:39:52,752 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-19 23:39:52,753 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-19 23:39:52,753 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-19 23:39:52,754 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-19 23:39:52,754 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-19 23:39:52,758 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-19 23:39:52,758 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-19 23:39:52,759 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-19 23:39:52,759 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-19 23:39:52,760 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-19 23:39:52,760 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_No_Goto.epf [2018-06-19 23:39:52,782 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-19 23:39:52,783 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-19 23:39:52,783 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-19 23:39:52,783 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-19 23:39:52,784 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-19 23:39:52,784 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-19 23:39:52,784 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-19 23:39:52,786 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-19 23:39:52,786 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-19 23:39:52,786 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-19 23:39:52,787 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-19 23:39:52,787 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-19 23:39:52,787 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-19 23:39:52,787 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-19 23:39:52,787 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-19 23:39:52,788 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-19 23:39:52,788 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-19 23:39:52,788 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-19 23:39:52,788 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-19 23:39:52,789 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-19 23:39:52,790 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-19 23:39:52,841 INFO ]: Repository-Root is: /tmp [2018-06-19 23:39:52,857 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-19 23:39:52,862 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-19 23:39:52,864 INFO ]: Initializing SmtParser... [2018-06-19 23:39:52,864 INFO ]: SmtParser initialized [2018-06-19 23:39:52,864 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp18-benchmarks/lra/chc-lra-0003.smt2 [2018-06-19 23:39:52,866 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 [2018-06-19 23:39:52,953 INFO ]: Executing SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0003.smt2 unknown [2018-06-19 23:39:53,202 INFO ]: Succesfully executed SMT file /storage/chc-comp18-benchmarks/lra/chc-lra-0003.smt2 [2018-06-19 23:39:53,206 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-19 23:39:53,220 INFO ]: Walking toolchain with 4 elements. [2018-06-19 23:39:53,221 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-19 23:39:53,221 INFO ]: Initializing ChcToBoogie... [2018-06-19 23:39:53,221 INFO ]: ChcToBoogie initialized [2018-06-19 23:39:53,224 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 19.06 11:39:53" (1/1) ... [2018-06-19 23:39:53,309 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:53 Unit [2018-06-19 23:39:53,309 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-19 23:39:53,309 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-19 23:39:53,309 INFO ]: Initializing Boogie Preprocessor... [2018-06-19 23:39:53,309 INFO ]: Boogie Preprocessor initialized [2018-06-19 23:39:53,331 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:53" (1/1) ... [2018-06-19 23:39:53,331 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:53" (1/1) ... [2018-06-19 23:39:53,338 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:53" (1/1) ... [2018-06-19 23:39:53,338 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:53" (1/1) ... [2018-06-19 23:39:53,342 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:53" (1/1) ... [2018-06-19 23:39:53,343 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:53" (1/1) ... [2018-06-19 23:39:53,344 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:53" (1/1) ... [2018-06-19 23:39:53,346 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-19 23:39:53,347 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-19 23:39:53,347 INFO ]: Initializing RCFGBuilder... [2018-06-19 23:39:53,347 INFO ]: RCFGBuilder initialized [2018-06-19 23:39:53,348 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:53" (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 [2018-06-19 23:39:53,359 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-19 23:39:53,359 INFO ]: Found specification of procedure False [2018-06-19 23:39:53,359 INFO ]: Found implementation of procedure False [2018-06-19 23:39:53,359 INFO ]: Specification and implementation of procedure invariant given in one single declaration [2018-06-19 23:39:53,359 INFO ]: Found specification of procedure invariant [2018-06-19 23:39:53,359 INFO ]: Found implementation of procedure invariant [2018-06-19 23:39:53,359 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-19 23:39:53,359 INFO ]: Found specification of procedure Ultimate.START [2018-06-19 23:39:53,359 INFO ]: Found implementation of procedure Ultimate.START [2018-06-19 23:39:53,623 INFO ]: Using library mode [2018-06-19 23:39:53,623 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.06 11:39:53 BoogieIcfgContainer [2018-06-19 23:39:53,623 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-19 23:39:53,626 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-19 23:39:53,626 INFO ]: Initializing TraceAbstraction... [2018-06-19 23:39:53,629 INFO ]: TraceAbstraction initialized [2018-06-19 23:39:53,629 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 19.06 11:39:53" (1/3) ... [2018-06-19 23:39:53,630 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73708f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 19.06 11:39:53, skipping insertion in model container [2018-06-19 23:39:53,630 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 19.06 11:39:53" (2/3) ... [2018-06-19 23:39:53,630 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73708f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.06 11:39:53, skipping insertion in model container [2018-06-19 23:39:53,630 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.06 11:39:53" (3/3) ... [2018-06-19 23:39:53,632 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-19 23:39:53,644 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-19 23:39:53,651 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-19 23:39:53,688 INFO ]: Using default assertion order modulation [2018-06-19 23:39:53,688 INFO ]: Interprodecural is true [2018-06-19 23:39:53,688 INFO ]: Hoare is false [2018-06-19 23:39:53,688 INFO ]: Compute interpolants for FPandBP [2018-06-19 23:39:53,688 INFO ]: Backedges is TWOTRACK [2018-06-19 23:39:53,688 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-19 23:39:53,688 INFO ]: Difference is false [2018-06-19 23:39:53,688 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-19 23:39:53,688 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-19 23:39:53,701 INFO ]: Start isEmpty. Operand 13 states. [2018-06-19 23:39:53,711 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-19 23:39:53,711 INFO ]: Found error trace [2018-06-19 23:39:53,712 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 23:39:53,712 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 23:39:53,717 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-19 23:39:53,719 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 23:39:53,719 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 23:39:53,757 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:39:53,758 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 23:39:53,758 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:39:53,802 INFO ]: Conjunction of SSA is unsat [2018-06-19 23:39:53,968 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-19 23:39:53,970 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-19 23:39:53,970 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-19 23:39:53,972 INFO ]: Interpolant automaton has 4 states [2018-06-19 23:39:53,986 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-19 23:39:53,987 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-19 23:39:53,988 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-19 23:39:54,058 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-19 23:39:54,058 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-19 23:39:54,065 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-19 23:39:54,067 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-19 23:39:54,067 INFO ]: Finished accepts. some prefix is accepted. [2018-06-19 23:39:54,084 INFO ]: With dead ends: 13 [2018-06-19 23:39:54,084 INFO ]: Without dead ends: 13 [2018-06-19 23:39:54,086 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 [2018-06-19 23:39:54,100 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-19 23:39:54,125 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-19 23:39:54,128 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-19 23:39:54,129 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-19 23:39:54,129 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-19 23:39:54,130 INFO ]: Finished accepts. word is rejected. [2018-06-19 23:39:54,130 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-19 23:39:54,130 INFO ]: Interpolant automaton has 4 states. [2018-06-19 23:39:54,130 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-19 23:39:54,131 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-19 23:39:54,131 INFO ]: Found error trace [2018-06-19 23:39:54,131 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 23:39:54,131 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 23:39:54,131 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-19 23:39:54,131 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 23:39:54,131 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 23:39:54,132 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:39:54,132 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 23:39:54,132 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:39:54,274 INFO ]: Conjunction of SSA is unsat [2018-06-19 23:39:54,639 WARN ]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-06-19 23:39:56,361 WARN ]: Spent 1.65 s on a formula simplification. DAG size of input: 126 DAG size of output: 76 [2018-06-19 23:39:56,820 WARN ]: Spent 372.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-06-19 23:39:56,937 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-19 23:39:56,938 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-19 23:39:56,938 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 [2018-06-19 23:39:56,948 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 23:39:56,997 INFO ]: Conjunction of SSA is unsat [2018-06-19 23:39:57,004 INFO ]: Computing forward predicates... [2018-06-19 23:40:12,920 WARN ]: Spent 9.42 s on a formula simplification. DAG size of input: 682 DAG size of output: 106 [2018-06-19 23:40:13,060 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-19 23:40:13,083 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-19 23:40:13,083 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-19 23:40:13,084 INFO ]: Interpolant automaton has 9 states [2018-06-19 23:40:13,084 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-19 23:40:13,084 INFO ]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-06-19 23:40:13,084 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 9 states. [2018-06-19 23:40:13,738 WARN ]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2018-06-19 23:40:14,047 WARN ]: Spent 269.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 61 [2018-06-19 23:40:14,086 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-19 23:40:14,086 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-19 23:40:14,088 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-19 23:40:14,088 INFO ]: Start accepts. Automaton has 9 states. Word has length 13 [2018-06-19 23:40:14,088 INFO ]: Finished accepts. some prefix is accepted. [2018-06-19 23:40:14,089 INFO ]: With dead ends: 15 [2018-06-19 23:40:14,089 INFO ]: Without dead ends: 15 [2018-06-19 23:40:14,090 INFO ]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-06-19 23:40:14,090 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-19 23:40:14,092 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-19 23:40:14,092 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-19 23:40:14,092 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-19 23:40:14,093 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-19 23:40:14,093 INFO ]: Finished accepts. word is rejected. [2018-06-19 23:40:14,093 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-19 23:40:14,093 INFO ]: Interpolant automaton has 9 states. [2018-06-19 23:40:14,093 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-19 23:40:14,093 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-19 23:40:14,093 INFO ]: Found error trace [2018-06-19 23:40:14,093 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 23:40:14,093 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 23:40:14,094 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-19 23:40:14,094 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 23:40:14,094 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 23:40:14,095 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:40:14,095 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-19 23:40:14,095 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:40:14,266 INFO ]: Conjunction of SSA is unsat [2018-06-19 23:40:15,929 WARN ]: Spent 1.15 s on a formula simplification. DAG size of input: 214 DAG size of output: 84 [2018-06-19 23:40:16,577 WARN ]: Spent 544.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 84 [2018-06-19 23:40:17,015 WARN ]: Spent 362.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 19 [2018-06-19 23:40:17,207 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-19 23:40:17,207 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-19 23:40:17,207 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 [2018-06-19 23:40:17,223 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-19 23:40:17,285 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-19 23:40:17,285 INFO ]: Conjunction of SSA is unsat [2018-06-19 23:40:17,289 INFO ]: Computing forward predicates... [2018-06-19 23:40:40,837 WARN ]: Spent 18.40 s on a formula simplification. DAG size of input: 938 DAG size of output: 150 [2018-06-19 23:41:03,349 WARN ]: Spent 19.80 s on a formula simplification. DAG size of input: 864 DAG size of output: 158 [2018-06-19 23:41:03,828 WARN ]: Spent 355.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 33 [2018-06-19 23:41:04,270 WARN ]: Spent 182.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 7 [2018-06-19 23:41:04,275 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-19 23:41:04,296 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-19 23:41:04,296 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2018-06-19 23:41:04,296 INFO ]: Interpolant automaton has 12 states [2018-06-19 23:41:04,296 INFO ]: Constructing interpolant automaton starting with 12 interpolants. [2018-06-19 23:41:04,297 INFO ]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-06-19 23:41:04,297 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 12 states. [2018-06-19 23:41:12,653 WARN ]: Spent 8.28 s on a formula simplification. DAG size of input: 356 DAG size of output: 291 [2018-06-19 23:41:14,242 WARN ]: Spent 1.47 s on a formula simplification. DAG size of input: 375 DAG size of output: 94 [2018-06-19 23:41:16,210 WARN ]: Spent 1.86 s on a formula simplification. DAG size of input: 360 DAG size of output: 121 [2018-06-19 23:41:16,327 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-19 23:41:16,327 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-19 23:41:16,328 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-19 23:41:16,329 INFO ]: Start accepts. Automaton has 12 states. Word has length 17 [2018-06-19 23:41:16,329 INFO ]: Finished accepts. some prefix is accepted. [2018-06-19 23:41:16,329 INFO ]: With dead ends: 17 [2018-06-19 23:41:16,329 INFO ]: Without dead ends: 17 [2018-06-19 23:41:16,330 INFO ]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2018-06-19 23:41:16,330 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-19 23:41:16,332 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-19 23:41:16,332 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-19 23:41:16,332 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-19 23:41:16,332 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-19 23:41:16,332 INFO ]: Finished accepts. word is rejected. [2018-06-19 23:41:16,332 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-19 23:41:16,332 INFO ]: Interpolant automaton has 12 states. [2018-06-19 23:41:16,332 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-19 23:41:16,333 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-19 23:41:16,333 INFO ]: Found error trace [2018-06-19 23:41:16,333 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-19 23:41:16,333 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-19 23:41:16,333 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-19 23:41:16,333 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-19 23:41:16,333 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-19 23:41:16,334 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:41:16,334 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-19 23:41:16,334 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-19 23:41:16,577 INFO ]: Conjunction of SSA is unsat [2018-06-19 23:41:17,759 WARN ]: Spent 578.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 8 [2018-06-19 23:41:18,757 WARN ]: Spent 956.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 101 [2018-06-19 23:41:20,418 WARN ]: Spent 1.62 s on a formula simplification. DAG size of input: 328 DAG size of output: 158 [2018-06-19 23:41:21,824 WARN ]: Spent 1.35 s on a formula simplification. DAG size of input: 314 DAG size of output: 152 [2018-06-19 23:41:22,323 WARN ]: Spent 422.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 49 [2018-06-19 23:41:22,739 WARN ]: Spent 332.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 47 [2018-06-19 23:41:23,048 WARN ]: Spent 259.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 23 [2018-06-19 23:41:23,054 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-19 23:41:23,054 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-19 23:41:23,054 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 [2018-06-19 23:41:23,060 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-19 23:41:23,130 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-19 23:41:23,130 INFO ]: Conjunction of SSA is unsat [2018-06-19 23:41:23,136 INFO ]: Computing forward predicates... [2018-06-19 23:41:46,113 WARN ]: Spent 19.09 s on a formula simplification. DAG size of input: 962 DAG size of output: 145 [2018-06-19 23:43:02,414 WARN ]: Spent 1.21 m on a formula simplification. DAG size of input: 1596 DAG size of output: 214 Received shutdown request... [2018-06-19 23:43:54,130 WARN ]: Removed 257 from assertion stack [2018-06-19 23:43:54,130 INFO ]: Timeout while computing interpolants [2018-06-19 23:43:54,330 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-19 23:43:54,330 WARN ]: Verification canceled [2018-06-19 23:43:54,335 WARN ]: Timeout [2018-06-19 23:43:54,335 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.06 11:43:54 BoogieIcfgContainer [2018-06-19 23:43:54,335 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-19 23:43:54,336 INFO ]: Toolchain (without parser) took 241129.40 ms. Allocated memory was 308.3 MB in the beginning and 305.1 MB in the end (delta: -3.1 MB). Free memory was 260.7 MB in the beginning and 216.1 MB in the end (delta: 44.6 MB). Peak memory consumption was 524.0 MB. Max. memory is 7.1 GB. [2018-06-19 23:43:54,337 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2018-06-19 23:43:54,337 INFO ]: ChcToBoogie took 88.16 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 258.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2018-06-19 23:43:54,338 INFO ]: Boogie Preprocessor took 36.98 ms. Allocated memory is still 308.3 MB. Free memory was 258.7 MB in the beginning and 256.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2018-06-19 23:43:54,338 INFO ]: RCFGBuilder took 276.44 ms. Allocated memory is still 308.3 MB. Free memory was 256.7 MB in the beginning and 246.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2018-06-19 23:43:54,339 INFO ]: TraceAbstraction took 240709.59 ms. Allocated memory was 308.3 MB in the beginning and 305.1 MB in the end (delta: -3.1 MB). Free memory was 246.7 MB in the beginning and 216.1 MB in the end (delta: 30.6 MB). Peak memory consumption was 510.1 MB. Max. memory is 7.1 GB. [2018-06-19 23:43:54,341 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 308.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * ChcToBoogie took 88.16 ms. Allocated memory is still 308.3 MB. Free memory was 260.7 MB in the beginning and 258.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.98 ms. Allocated memory is still 308.3 MB. Free memory was 258.7 MB in the beginning and 256.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 276.44 ms. Allocated memory is still 308.3 MB. Free memory was 256.7 MB in the beginning and 246.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 240709.59 ms. Allocated memory was 308.3 MB in the beginning and 305.1 MB in the end (delta: -3.1 MB). Free memory was 246.7 MB in the beginning and 216.1 MB in the end (delta: 30.6 MB). Peak memory consumption was 510.1 MB. 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 22 with TraceHistMax 4, while TraceCheckSpWp was constructing forward predicates, while PredicateUnifier was unifying predicates, while SimplifyDDAWithTimeout was simplifying term of DAG size 1607. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 240.6s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 13.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 20 SDslu, 93 SDs, 0 SdLazy, 68 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 67.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 68.8s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 100636 SizeOfPredicates, 91 NumberOfNonLiveVariables, 323 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/26 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-0003.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-19_23-43-54-352.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/chc-lra-0003.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-19_23-43-54-352.csv Completed graceful shutdown