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/vmt-chc-benchmarks/lustre/DRAGON_6_e7_5046_e7_3623.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 16:56:54,653 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 16:56:54,655 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 16:56:54,669 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 16:56:54,670 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 16:56:54,671 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 16:56:54,673 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 16:56:54,676 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 16:56:54,678 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 16:56:54,680 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 16:56:54,681 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 16:56:54,681 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 16:56:54,682 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 16:56:54,686 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 16:56:54,687 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 16:56:54,687 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 16:56:54,701 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 16:56:54,703 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 16:56:54,705 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 16:56:54,706 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 16:56:54,707 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 16:56:54,709 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 16:56:54,709 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 16:56:54,710 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 16:56:54,714 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 16:56:54,715 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 16:56:54,716 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 16:56:54,717 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 16:56:54,722 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 16:56:54,723 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 16:56:54,724 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 16:56:54,724 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 16:56:54,724 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 16:56:54,725 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 16:56:54,726 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 16:56:54,726 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 16:56:54,741 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 16:56:54,741 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 16:56:54,742 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 16:56:54,742 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 16:56:54,743 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 16:56:54,743 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 16:56:54,743 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 16:56:54,744 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 16:56:54,744 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 16:56:54,744 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 16:56:54,744 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 16:56:54,744 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 16:56:54,745 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 16:56:54,745 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 16:56:54,745 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 16:56:54,745 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 16:56:54,745 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 16:56:54,745 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 16:56:54,746 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 16:56:54,747 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 16:56:54,747 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 16:56:54,783 INFO ]: Repository-Root is: /tmp [2018-06-22 16:56:54,805 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 16:56:54,812 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 16:56:54,813 INFO ]: Initializing SmtParser... [2018-06-22 16:56:54,814 INFO ]: SmtParser initialized [2018-06-22 16:56:54,815 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/DRAGON_6_e7_5046_e7_3623.smt2 [2018-06-22 16:56:54,816 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 16:56:54,917 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/DRAGON_6_e7_5046_e7_3623.smt2 unknown [2018-06-22 16:56:55,585 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/DRAGON_6_e7_5046_e7_3623.smt2 [2018-06-22 16:56:55,590 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 16:56:55,601 INFO ]: Walking toolchain with 4 elements. [2018-06-22 16:56:55,602 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 16:56:55,602 INFO ]: Initializing ChcToBoogie... [2018-06-22 16:56:55,602 INFO ]: ChcToBoogie initialized [2018-06-22 16:56:55,613 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:56:55" (1/1) ... [2018-06-22 16:56:55,670 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:55 Unit [2018-06-22 16:56:55,670 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 16:56:55,671 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 16:56:55,671 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 16:56:55,671 INFO ]: Boogie Preprocessor initialized [2018-06-22 16:56:55,693 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:55" (1/1) ... [2018-06-22 16:56:55,693 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:55" (1/1) ... [2018-06-22 16:56:55,717 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:55" (1/1) ... [2018-06-22 16:56:55,717 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:55" (1/1) ... [2018-06-22 16:56:55,748 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:55" (1/1) ... [2018-06-22 16:56:55,749 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:55" (1/1) ... [2018-06-22 16:56:55,753 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:55" (1/1) ... [2018-06-22 16:56:55,759 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 16:56:55,759 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 16:56:55,759 INFO ]: Initializing RCFGBuilder... [2018-06-22 16:56:55,759 INFO ]: RCFGBuilder initialized [2018-06-22 16:56:55,760 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:55" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 16:56:55,774 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 16:56:55,774 INFO ]: Found specification of procedure False [2018-06-22 16:56:55,774 INFO ]: Found implementation of procedure False [2018-06-22 16:56:55,774 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 16:56:55,774 INFO ]: Found specification of procedure state [2018-06-22 16:56:55,774 INFO ]: Found implementation of procedure state [2018-06-22 16:56:55,774 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 16:56:55,774 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 16:56:55,774 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 16:56:56,352 INFO ]: Using library mode [2018-06-22 16:56:56,353 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:56:56 BoogieIcfgContainer [2018-06-22 16:56:56,353 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 16:56:56,355 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 16:56:56,355 INFO ]: Initializing TraceAbstraction... [2018-06-22 16:56:56,360 INFO ]: TraceAbstraction initialized [2018-06-22 16:56:56,360 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 04:56:55" (1/3) ... [2018-06-22 16:56:56,361 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6327424c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 04:56:56, skipping insertion in model container [2018-06-22 16:56:56,361 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 04:56:55" (2/3) ... [2018-06-22 16:56:56,361 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6327424c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 04:56:56, skipping insertion in model container [2018-06-22 16:56:56,362 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 04:56:56" (3/3) ... [2018-06-22 16:56:56,363 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 16:56:56,372 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 16:56:56,383 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 16:56:56,433 INFO ]: Using default assertion order modulation [2018-06-22 16:56:56,434 INFO ]: Interprodecural is true [2018-06-22 16:56:56,434 INFO ]: Hoare is false [2018-06-22 16:56:56,434 INFO ]: Compute interpolants for FPandBP [2018-06-22 16:56:56,434 INFO ]: Backedges is TWOTRACK [2018-06-22 16:56:56,434 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 16:56:56,434 INFO ]: Difference is false [2018-06-22 16:56:56,434 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 16:56:56,434 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 16:56:56,450 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 16:56:56,464 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 16:56:56,464 INFO ]: Found error trace [2018-06-22 16:56:56,465 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:56:56,465 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:56:56,470 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 16:56:56,472 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:56:56,473 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:56:56,518 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:56:56,518 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:56:56,518 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:56:56,652 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:56:56,950 WARN ]: Spent 117.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-06-22 16:56:56,952 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 16:56:56,955 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 16:56:56,955 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 16:56:56,957 INFO ]: Interpolant automaton has 4 states [2018-06-22 16:56:56,972 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 16:56:56,972 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 16:56:56,975 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 16:56:57,121 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:56:57,122 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 16:56:57,123 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 16:56:57,124 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 16:56:57,125 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:56:57,135 INFO ]: With dead ends: 13 [2018-06-22 16:56:57,135 INFO ]: Without dead ends: 13 [2018-06-22 16:56:57,137 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 16:56:57,156 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 16:56:57,191 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 16:56:57,191 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 16:56:57,192 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 16:56:57,193 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 16:56:57,193 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:56:57,193 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 16:56:57,193 INFO ]: Interpolant automaton has 4 states. [2018-06-22 16:56:57,193 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 16:56:57,194 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 16:56:57,194 INFO ]: Found error trace [2018-06-22 16:56:57,194 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:56:57,194 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:56:57,194 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 16:56:57,194 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:56:57,194 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:56:57,195 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:56:57,195 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:56:57,195 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:56:57,302 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:56:58,509 WARN ]: Spent 878.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 38 [2018-06-22 16:56:58,753 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:56:58,754 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:56:58,754 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 16:56:58,762 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:56:58,934 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:56:58,951 INFO ]: Computing forward predicates... [2018-06-22 16:57:00,693 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:57:00,710 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:57:00,724 WARN ]: expecting exponential blowup for input size 8 [2018-06-22 16:57:00,784 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:57:00,792 WARN ]: expecting exponential blowup for input size 6 [2018-06-22 16:57:06,877 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 16:57:06,920 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 16:57:06,920 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 16:57:06,920 INFO ]: Interpolant automaton has 8 states [2018-06-22 16:57:06,920 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 16:57:06,921 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 16:57:06,921 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 16:57:07,245 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 16:57:07,245 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 16:57:07,247 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 16:57:07,247 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 16:57:07,247 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 16:57:07,247 INFO ]: With dead ends: 15 [2018-06-22 16:57:07,247 INFO ]: Without dead ends: 15 [2018-06-22 16:57:07,248 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-06-22 16:57:07,248 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 16:57:07,252 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 16:57:07,252 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 16:57:07,252 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 16:57:07,253 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 16:57:07,253 INFO ]: Finished accepts. word is rejected. [2018-06-22 16:57:07,253 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 16:57:07,253 INFO ]: Interpolant automaton has 8 states. [2018-06-22 16:57:07,253 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 16:57:07,253 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 16:57:07,253 INFO ]: Found error trace [2018-06-22 16:57:07,253 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 16:57:07,253 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 16:57:07,254 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 16:57:07,254 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 16:57:07,254 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 16:57:07,254 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:57:07,254 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 16:57:07,255 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 16:57:07,363 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:57:07,771 WARN ]: Spent 145.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 39 [2018-06-22 16:57:08,101 WARN ]: Spent 295.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 66 [2018-06-22 16:57:08,286 WARN ]: Spent 120.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 19 [2018-06-22 16:57:08,315 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 16:57:08,315 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 16:57:08,315 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 16:57:08,332 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 16:57:08,528 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 16:57:08,528 INFO ]: Conjunction of SSA is unsat [2018-06-22 16:57:08,537 INFO ]: Computing forward predicates... [2018-06-22 16:57:08,943 WARN ]: expecting exponential blowup for input size 15 [2018-06-22 16:57:09,490 WARN ]: Simplifying disjunction of 26244 conjuctions. This might take some time... Received shutdown request... [2018-06-22 16:58:06,264 INFO ]: Timeout while computing interpolants [2018-06-22 16:58:06,464 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 16:58:06,465 WARN ]: Verification canceled [2018-06-22 16:58:06,470 WARN ]: Timeout [2018-06-22 16:58:06,470 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 04:58:06 BoogieIcfgContainer [2018-06-22 16:58:06,470 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 16:58:06,471 INFO ]: Toolchain (without parser) took 70880.38 ms. Allocated memory was 307.8 MB in the beginning and 733.5 MB in the end (delta: 425.7 MB). Free memory was 230.3 MB in the beginning and 216.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 439.4 MB. Max. memory is 3.6 GB. [2018-06-22 16:58:06,471 INFO ]: SmtParser took 0.11 ms. Allocated memory is still 307.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 16:58:06,472 INFO ]: ChcToBoogie took 68.64 ms. Allocated memory is still 307.8 MB. Free memory was 230.3 MB in the beginning and 227.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:58:06,472 INFO ]: Boogie Preprocessor took 88.03 ms. Allocated memory is still 307.8 MB. Free memory was 227.4 MB in the beginning and 224.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-22 16:58:06,472 INFO ]: RCFGBuilder took 594.68 ms. Allocated memory was 307.8 MB in the beginning and 329.3 MB in the end (delta: 21.5 MB). Free memory was 224.4 MB in the beginning and 291.4 MB in the end (delta: -67.0 MB). Peak memory consumption was 43.2 MB. Max. memory is 3.6 GB. [2018-06-22 16:58:06,473 INFO ]: TraceAbstraction took 70114.82 ms. Allocated memory was 329.3 MB in the beginning and 733.5 MB in the end (delta: 404.2 MB). Free memory was 291.4 MB in the beginning and 216.7 MB in the end (delta: 74.7 MB). Peak memory consumption was 478.9 MB. Max. memory is 3.6 GB. [2018-06-22 16:58:06,480 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.11 ms. Allocated memory is still 307.8 MB. Free memory is still 273.4 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 68.64 ms. Allocated memory is still 307.8 MB. Free memory was 230.3 MB in the beginning and 227.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 88.03 ms. Allocated memory is still 307.8 MB. Free memory was 227.4 MB in the beginning and 224.4 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 594.68 ms. Allocated memory was 307.8 MB in the beginning and 329.3 MB in the end (delta: 21.5 MB). Free memory was 224.4 MB in the beginning and 291.4 MB in the end (delta: -67.0 MB). Peak memory consumption was 43.2 MB. Max. memory is 3.6 GB. * TraceAbstraction took 70114.82 ms. Allocated memory was 329.3 MB in the beginning and 733.5 MB in the end (delta: 404.2 MB). Free memory was 291.4 MB in the beginning and 216.7 MB in the end (delta: 74.7 MB). Peak memory consumption was 478.9 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds (line 0). Cancelled while BasicCegarLoop was analyzing trace of length 18 with TraceHistMax 3, while TraceCheckSpWp was constructing forward predicates, while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations, while DnfTransformerHelper was XNF transformer was simplifying 26244 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 70.0s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 7 SDslu, 41 SDs, 0 SdLazy, 27 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=2, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1768 SizeOfPredicates, 34 NumberOfNonLiveVariables, 754 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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/DRAGON_6_e7_5046_e7_3623.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_16-58-06-498.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/DRAGON_6_e7_5046_e7_3623.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_16-58-06-498.csv Completed graceful shutdown