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/PRODUCER_CONSUMER_1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:38:36,655 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:38:36,657 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:38:36,668 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:38:36,668 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:38:36,669 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:38:36,670 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:38:36,672 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:38:36,674 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:38:36,675 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:38:36,676 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:38:36,676 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:38:36,677 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:38:36,678 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:38:36,679 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:38:36,679 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:38:36,691 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:38:36,692 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:38:36,694 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:38:36,695 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:38:36,696 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:38:36,699 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:38:36,699 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:38:36,699 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:38:36,706 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:38:36,707 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:38:36,708 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:38:36,709 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:38:36,710 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:38:36,710 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:38:36,710 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:38:36,711 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:38:36,711 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:38:36,718 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:38:36,719 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:38:36,719 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 19:38:36,732 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:38:36,733 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:38:36,733 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:38:36,733 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:38:36,734 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:38:36,734 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:38:36,735 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:38:36,735 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:38:36,735 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:38:36,735 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:38:36,735 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:38:36,735 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:38:36,736 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:38:36,736 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:38:36,736 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:38:36,736 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:38:36,736 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:38:36,737 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:38:36,737 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:38:36,738 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:38:36,738 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:38:36,777 INFO ]: Repository-Root is: /tmp [2018-06-22 19:38:36,793 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:38:36,797 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:38:36,799 INFO ]: Initializing SmtParser... [2018-06-22 19:38:36,799 INFO ]: SmtParser initialized [2018-06-22 19:38:36,800 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_1.smt2 [2018-06-22 19:38:36,801 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 19:38:36,895 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_1.smt2 unknown [2018-06-22 19:38:37,219 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_1.smt2 [2018-06-22 19:38:37,224 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:38:37,231 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:38:37,231 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:38:37,231 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:38:37,231 INFO ]: ChcToBoogie initialized [2018-06-22 19:38:37,234 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:38:37" (1/1) ... [2018-06-22 19:38:37,294 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:38:37 Unit [2018-06-22 19:38:37,294 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:38:37,295 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:38:37,295 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:38:37,295 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:38:37,317 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:38:37" (1/1) ... [2018-06-22 19:38:37,317 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:38:37" (1/1) ... [2018-06-22 19:38:37,324 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:38:37" (1/1) ... [2018-06-22 19:38:37,324 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:38:37" (1/1) ... [2018-06-22 19:38:37,334 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:38:37" (1/1) ... [2018-06-22 19:38:37,335 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:38:37" (1/1) ... [2018-06-22 19:38:37,337 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:38:37" (1/1) ... [2018-06-22 19:38:37,340 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:38:37,341 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:38:37,341 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:38:37,341 INFO ]: RCFGBuilder initialized [2018-06-22 19:38:37,341 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:38:37" (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 19:38:37,353 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:38:37,353 INFO ]: Found specification of procedure False [2018-06-22 19:38:37,353 INFO ]: Found implementation of procedure False [2018-06-22 19:38:37,353 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:38:37,353 INFO ]: Found specification of procedure state [2018-06-22 19:38:37,353 INFO ]: Found implementation of procedure state [2018-06-22 19:38:37,353 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:38:37,353 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:38:37,353 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 19:38:37,674 INFO ]: Using library mode [2018-06-22 19:38:37,674 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:38:37 BoogieIcfgContainer [2018-06-22 19:38:37,675 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:38:37,676 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:38:37,676 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:38:37,680 INFO ]: TraceAbstraction initialized [2018-06-22 19:38:37,684 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:38:37" (1/3) ... [2018-06-22 19:38:37,690 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd2bbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:38:37, skipping insertion in model container [2018-06-22 19:38:37,690 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:38:37" (2/3) ... [2018-06-22 19:38:37,690 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dd2bbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:38:37, skipping insertion in model container [2018-06-22 19:38:37,690 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:38:37" (3/3) ... [2018-06-22 19:38:37,692 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:38:37,704 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:38:37,711 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:38:37,744 INFO ]: Using default assertion order modulation [2018-06-22 19:38:37,745 INFO ]: Interprodecural is true [2018-06-22 19:38:37,745 INFO ]: Hoare is false [2018-06-22 19:38:37,745 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:38:37,745 INFO ]: Backedges is TWOTRACK [2018-06-22 19:38:37,745 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:38:37,745 INFO ]: Difference is false [2018-06-22 19:38:37,745 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:38:37,745 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:38:37,758 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:38:37,774 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:38:37,775 INFO ]: Found error trace [2018-06-22 19:38:37,775 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:38:37,776 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:38:37,781 INFO ]: Analyzing trace with hash -597537630, now seen corresponding path program 1 times [2018-06-22 19:38:37,782 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:38:37,783 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:38:37,815 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:38:37,815 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:38:37,815 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:38:37,886 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:38:38,075 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:38:38,078 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:38:38,078 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:38:38,079 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:38:38,090 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:38:38,090 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:38:38,092 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:38:38,190 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:38:38,190 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:38:38,191 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:38:38,192 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:38:38,192 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:38:38,201 INFO ]: With dead ends: 13 [2018-06-22 19:38:38,201 INFO ]: Without dead ends: 13 [2018-06-22 19:38:38,203 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:38:38,219 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:38:38,238 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:38:38,239 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:38:38,240 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:38:38,241 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:38:38,241 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:38:38,241 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:38:38,241 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:38:38,241 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:38:38,242 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:38:38,242 INFO ]: Found error trace [2018-06-22 19:38:38,242 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:38:38,243 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:38:38,243 INFO ]: Analyzing trace with hash 1530833734, now seen corresponding path program 1 times [2018-06-22 19:38:38,243 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:38:38,243 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:38:38,244 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:38:38,244 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:38:38,244 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:38:38,299 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:38:38,634 WARN ]: Spent 205.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 19 [2018-06-22 19:38:38,680 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:38:38,681 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:38:38,681 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 19:38:38,688 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:38:38,807 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:38:38,819 INFO ]: Computing forward predicates... [2018-06-22 19:38:39,492 WARN ]: Spent 317.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-06-22 19:38:39,575 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:38:39,608 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:38:39,608 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:38:39,609 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:38:39,609 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:38:39,609 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:38:39,609 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:38:39,820 WARN ]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-06-22 19:38:40,291 WARN ]: Spent 203.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-06-22 19:38:40,337 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:38:40,337 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:38:40,338 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:38:40,338 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:38:40,338 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:38:40,338 INFO ]: With dead ends: 15 [2018-06-22 19:38:40,338 INFO ]: Without dead ends: 15 [2018-06-22 19:38:40,339 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:38:40,339 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:38:40,341 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:38:40,341 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:38:40,343 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:38:40,343 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:38:40,343 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:38:40,343 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:38:40,343 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:38:40,344 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:38:40,344 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:38:40,344 INFO ]: Found error trace [2018-06-22 19:38:40,344 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:38:40,344 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:38:40,344 INFO ]: Analyzing trace with hash -1486246934, now seen corresponding path program 2 times [2018-06-22 19:38:40,344 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:38:40,344 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:38:40,345 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:38:40,345 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:38:40,345 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:38:40,394 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:38:40,704 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:38:40,704 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:38:40,704 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 19:38:40,715 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:38:40,809 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:38:40,809 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:38:40,814 INFO ]: Computing forward predicates... [2018-06-22 19:38:41,410 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:38:41,431 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:38:41,431 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2018-06-22 19:38:41,431 INFO ]: Interpolant automaton has 11 states [2018-06-22 19:38:41,431 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-22 19:38:41,431 INFO ]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:38:41,431 INFO ]: Start difference. First operand 15 states and 16 transitions. Second operand 11 states. [2018-06-22 19:38:41,704 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:38:41,704 INFO ]: Finished difference Result 17 states and 18 transitions. [2018-06-22 19:38:41,737 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:38:41,737 INFO ]: Start accepts. Automaton has 11 states. Word has length 17 [2018-06-22 19:38:41,737 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:38:41,738 INFO ]: With dead ends: 17 [2018-06-22 19:38:41,738 INFO ]: Without dead ends: 17 [2018-06-22 19:38:41,738 INFO ]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2018-06-22 19:38:41,738 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-22 19:38:41,741 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-22 19:38:41,741 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-22 19:38:41,742 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2018-06-22 19:38:41,742 INFO ]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 17 [2018-06-22 19:38:41,742 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:38:41,742 INFO ]: Abstraction has 17 states and 18 transitions. [2018-06-22 19:38:41,742 INFO ]: Interpolant automaton has 11 states. [2018-06-22 19:38:41,742 INFO ]: Start isEmpty. Operand 17 states and 18 transitions. [2018-06-22 19:38:41,743 INFO ]: Finished isEmpty. Found accepting run of length 22 [2018-06-22 19:38:41,743 INFO ]: Found error trace [2018-06-22 19:38:41,743 INFO ]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:38:41,743 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:38:41,743 INFO ]: Analyzing trace with hash -2056434034, now seen corresponding path program 3 times [2018-06-22 19:38:41,743 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:38:41,743 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:38:41,743 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:38:41,744 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-22 19:38:41,744 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:38:41,800 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:38:42,099 INFO ]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:38:42,099 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:38:42,099 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 [2018-06-22 19:38:42,106 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-22 19:38:42,211 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-22 19:38:42,211 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:38:42,216 INFO ]: Computing forward predicates... [2018-06-22 19:38:42,424 INFO ]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-06-22 19:38:42,457 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:38:42,457 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-06-22 19:38:42,457 INFO ]: Interpolant automaton has 15 states [2018-06-22 19:38:42,458 INFO ]: Constructing interpolant automaton starting with 15 interpolants. [2018-06-22 19:38:42,458 INFO ]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-06-22 19:38:42,458 INFO ]: Start difference. First operand 17 states and 18 transitions. Second operand 15 states. [2018-06-22 19:38:42,686 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:38:42,686 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:38:42,687 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-22 19:38:42,687 INFO ]: Start accepts. Automaton has 15 states. Word has length 21 [2018-06-22 19:38:42,687 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:38:42,687 INFO ]: With dead ends: 13 [2018-06-22 19:38:42,687 INFO ]: Without dead ends: 0 [2018-06-22 19:38:42,687 INFO ]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-06-22 19:38:42,687 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 19:38:42,687 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 19:38:42,687 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 19:38:42,687 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 19:38:42,687 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-06-22 19:38:42,688 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:38:42,688 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 19:38:42,688 INFO ]: Interpolant automaton has 15 states. [2018-06-22 19:38:42,688 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 19:38:42,688 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 19:38:42,693 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:38:42 BoogieIcfgContainer [2018-06-22 19:38:42,693 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:38:42,694 INFO ]: Toolchain (without parser) took 5469.84 ms. Allocated memory was 309.3 MB in the beginning and 377.0 MB in the end (delta: 67.6 MB). Free memory was 255.7 MB in the beginning and 349.9 MB in the end (delta: -94.1 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:38:42,695 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:38:42,695 INFO ]: ChcToBoogie took 63.36 ms. Allocated memory is still 309.3 MB. Free memory was 254.7 MB in the beginning and 252.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:38:42,696 INFO ]: Boogie Preprocessor took 45.04 ms. Allocated memory is still 309.3 MB. Free memory was 252.7 MB in the beginning and 251.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-22 19:38:42,696 INFO ]: RCFGBuilder took 334.08 ms. Allocated memory is still 309.3 MB. Free memory was 251.7 MB in the beginning and 235.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 3.6 GB. [2018-06-22 19:38:42,697 INFO ]: TraceAbstraction took 5016.81 ms. Allocated memory was 309.3 MB in the beginning and 377.0 MB in the end (delta: 67.6 MB). Free memory was 235.6 MB in the beginning and 349.9 MB in the end (delta: -114.2 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:38:42,700 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 63.36 ms. Allocated memory is still 309.3 MB. Free memory was 254.7 MB in the beginning and 252.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 45.04 ms. Allocated memory is still 309.3 MB. Free memory was 252.7 MB in the beginning and 251.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 334.08 ms. Allocated memory is still 309.3 MB. Free memory was 251.7 MB in the beginning and 235.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 5016.81 ms. Allocated memory was 309.3 MB in the beginning and 377.0 MB in the end (delta: 67.6 MB). Free memory was 235.6 MB in the beginning and 349.9 MB in the end (delta: -114.2 MB). There was no memory consumed. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. SAFE Result, 4.9s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 29 SDslu, 125 SDs, 0 SdLazy, 106 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.5s 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 111 NumberOfCodeBlocks, 111 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 6500 SizeOfPredicates, 62 NumberOfNonLiveVariables, 1464 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 22/68 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-38-42-710.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_1.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-38-42-710.csv Received shutdown request...