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_vt.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 19:41:08,752 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 19:41:08,754 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 19:41:08,767 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 19:41:08,768 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 19:41:08,769 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 19:41:08,770 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 19:41:08,772 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 19:41:08,773 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 19:41:08,774 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 19:41:08,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 19:41:08,775 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 19:41:08,776 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 19:41:08,777 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 19:41:08,778 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 19:41:08,779 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 19:41:08,780 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 19:41:08,782 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 19:41:08,784 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 19:41:08,785 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 19:41:08,786 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 19:41:08,789 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 19:41:08,789 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 19:41:08,789 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 19:41:08,790 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 19:41:08,791 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 19:41:08,792 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 19:41:08,792 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 19:41:08,793 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 19:41:08,794 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 19:41:08,794 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 19:41:08,795 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 19:41:08,795 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 19:41:08,796 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 19:41:08,797 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 19:41:08,797 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 19:41:08,810 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 19:41:08,811 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 19:41:08,811 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 19:41:08,811 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 19:41:08,812 INFO L131 SettingsManager]: Preferences of ChcToBoogie differ from their defaults: [2018-06-22 19:41:08,813 INFO L133 SettingsManager]: * Use one large procedure with gotos to replace tail recursive calls=false [2018-06-22 19:41:08,813 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 19:41:08,813 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 19:41:08,813 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 19:41:08,814 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 19:41:08,814 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:41:08,814 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 19:41:08,814 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 19:41:08,815 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 19:41:08,815 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 19:41:08,815 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 19:41:08,815 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 19:41:08,815 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 19:41:08,816 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 19:41:08,817 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 19:41:08,817 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 19:41:08,864 INFO ]: Repository-Root is: /tmp [2018-06-22 19:41:08,882 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 19:41:08,887 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 19:41:08,889 INFO ]: Initializing SmtParser... [2018-06-22 19:41:08,889 INFO ]: SmtParser initialized [2018-06-22 19:41:08,890 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt.smt2 [2018-06-22 19:41:08,891 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 19:41:08,989 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt.smt2 unknown [2018-06-22 19:41:09,430 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/PRODUCER_CONSUMER_vt.smt2 [2018-06-22 19:41:09,439 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 19:41:09,447 INFO ]: Walking toolchain with 4 elements. [2018-06-22 19:41:09,448 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 19:41:09,448 INFO ]: Initializing ChcToBoogie... [2018-06-22 19:41:09,448 INFO ]: ChcToBoogie initialized [2018-06-22 19:41:09,452 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:41:09" (1/1) ... [2018-06-22 19:41:09,533 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:09 Unit [2018-06-22 19:41:09,533 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 19:41:09,535 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 19:41:09,535 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 19:41:09,535 INFO ]: Boogie Preprocessor initialized [2018-06-22 19:41:09,566 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:09" (1/1) ... [2018-06-22 19:41:09,566 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:09" (1/1) ... [2018-06-22 19:41:09,573 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:09" (1/1) ... [2018-06-22 19:41:09,573 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:09" (1/1) ... [2018-06-22 19:41:09,577 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:09" (1/1) ... [2018-06-22 19:41:09,579 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:09" (1/1) ... [2018-06-22 19:41:09,581 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:09" (1/1) ... [2018-06-22 19:41:09,590 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 19:41:09,590 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 19:41:09,590 INFO ]: Initializing RCFGBuilder... [2018-06-22 19:41:09,590 INFO ]: RCFGBuilder initialized [2018-06-22 19:41:09,591 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:09" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-22 19:41:09,602 INFO ]: Specification and implementation of procedure False given in one single declaration [2018-06-22 19:41:09,602 INFO ]: Found specification of procedure False [2018-06-22 19:41:09,602 INFO ]: Found implementation of procedure False [2018-06-22 19:41:09,602 INFO ]: Specification and implementation of procedure state given in one single declaration [2018-06-22 19:41:09,602 INFO ]: Found specification of procedure state [2018-06-22 19:41:09,602 INFO ]: Found implementation of procedure state [2018-06-22 19:41:09,602 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 19:41:09,602 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 19:41:09,602 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 19:41:09,821 INFO ]: Using library mode [2018-06-22 19:41:09,822 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:41:09 BoogieIcfgContainer [2018-06-22 19:41:09,822 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 19:41:09,829 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 19:41:09,830 INFO ]: Initializing TraceAbstraction... [2018-06-22 19:41:09,837 INFO ]: TraceAbstraction initialized [2018-06-22 19:41:09,838 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 07:41:09" (1/3) ... [2018-06-22 19:41:09,839 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3596de13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 07:41:09, skipping insertion in model container [2018-06-22 19:41:09,839 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 07:41:09" (2/3) ... [2018-06-22 19:41:09,839 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3596de13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 07:41:09, skipping insertion in model container [2018-06-22 19:41:09,839 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 07:41:09" (3/3) ... [2018-06-22 19:41:09,841 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 19:41:09,855 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 19:41:09,866 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 19:41:09,921 INFO ]: Using default assertion order modulation [2018-06-22 19:41:09,922 INFO ]: Interprodecural is true [2018-06-22 19:41:09,922 INFO ]: Hoare is false [2018-06-22 19:41:09,922 INFO ]: Compute interpolants for FPandBP [2018-06-22 19:41:09,922 INFO ]: Backedges is TWOTRACK [2018-06-22 19:41:09,922 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 19:41:09,922 INFO ]: Difference is false [2018-06-22 19:41:09,922 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 19:41:09,922 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 19:41:09,940 INFO ]: Start isEmpty. Operand 13 states. [2018-06-22 19:41:09,960 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 19:41:09,961 INFO ]: Found error trace [2018-06-22 19:41:09,962 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:41:09,962 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:41:09,966 INFO ]: Analyzing trace with hash -683425083, now seen corresponding path program 1 times [2018-06-22 19:41:09,967 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:41:09,968 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:41:10,005 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:41:10,005 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:41:10,005 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:41:10,075 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:41:10,314 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 19:41:10,317 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 19:41:10,317 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 19:41:10,319 INFO ]: Interpolant automaton has 4 states [2018-06-22 19:41:10,335 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 19:41:10,335 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 19:41:10,338 INFO ]: Start difference. First operand 13 states. Second operand 4 states. [2018-06-22 19:41:10,472 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:41:10,473 INFO ]: Finished difference Result 13 states and 14 transitions. [2018-06-22 19:41:10,473 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-22 19:41:10,475 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 19:41:10,475 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:41:10,487 INFO ]: With dead ends: 13 [2018-06-22 19:41:10,487 INFO ]: Without dead ends: 13 [2018-06-22 19:41:10,491 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 19:41:10,508 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-22 19:41:10,535 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-22 19:41:10,536 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-22 19:41:10,536 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-06-22 19:41:10,538 INFO ]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 9 [2018-06-22 19:41:10,538 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:41:10,538 INFO ]: Abstraction has 13 states and 14 transitions. [2018-06-22 19:41:10,539 INFO ]: Interpolant automaton has 4 states. [2018-06-22 19:41:10,539 INFO ]: Start isEmpty. Operand 13 states and 14 transitions. [2018-06-22 19:41:10,540 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-22 19:41:10,540 INFO ]: Found error trace [2018-06-22 19:41:10,540 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:41:10,540 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:41:10,541 INFO ]: Analyzing trace with hash 204343015, now seen corresponding path program 1 times [2018-06-22 19:41:10,541 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:41:10,541 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:41:10,542 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:41:10,542 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:41:10,542 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:41:10,635 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:41:11,564 WARN ]: Spent 649.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2018-06-22 19:41:11,774 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:41:11,774 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:41:11,774 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 19:41:11,783 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:41:11,864 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:41:11,878 INFO ]: Computing forward predicates... [2018-06-22 19:41:12,168 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:41:12,202 WARN ]: expecting exponential blowup for input size 7 [2018-06-22 19:41:13,724 WARN ]: Spent 143.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2018-06-22 19:41:13,839 INFO ]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-22 19:41:13,868 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-22 19:41:13,868 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-22 19:41:13,869 INFO ]: Interpolant automaton has 8 states [2018-06-22 19:41:13,869 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-22 19:41:13,869 INFO ]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-06-22 19:41:13,869 INFO ]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states. [2018-06-22 19:41:14,024 WARN ]: Spent 101.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 23 [2018-06-22 19:41:14,173 WARN ]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2018-06-22 19:41:14,284 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 19:41:14,284 INFO ]: Finished difference Result 15 states and 16 transitions. [2018-06-22 19:41:14,284 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-22 19:41:14,284 INFO ]: Start accepts. Automaton has 8 states. Word has length 13 [2018-06-22 19:41:14,285 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 19:41:14,285 INFO ]: With dead ends: 15 [2018-06-22 19:41:14,285 INFO ]: Without dead ends: 15 [2018-06-22 19:41:14,286 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-06-22 19:41:14,286 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-22 19:41:14,291 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-06-22 19:41:14,291 INFO ]: Start removeUnreachable. Operand 15 states. [2018-06-22 19:41:14,292 INFO ]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2018-06-22 19:41:14,292 INFO ]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2018-06-22 19:41:14,292 INFO ]: Finished accepts. word is rejected. [2018-06-22 19:41:14,292 INFO ]: Abstraction has 15 states and 16 transitions. [2018-06-22 19:41:14,292 INFO ]: Interpolant automaton has 8 states. [2018-06-22 19:41:14,292 INFO ]: Start isEmpty. Operand 15 states and 16 transitions. [2018-06-22 19:41:14,293 INFO ]: Finished isEmpty. Found accepting run of length 18 [2018-06-22 19:41:14,293 INFO ]: Found error trace [2018-06-22 19:41:14,293 INFO ]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 19:41:14,293 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 19:41:14,293 INFO ]: Analyzing trace with hash -1649658231, now seen corresponding path program 2 times [2018-06-22 19:41:14,293 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 19:41:14,293 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 19:41:14,296 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:41:14,296 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 19:41:14,296 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 19:41:14,380 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:41:14,753 WARN ]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2018-06-22 19:41:14,901 WARN ]: Spent 105.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2018-06-22 19:41:15,089 INFO ]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-22 19:41:15,089 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 19:41:15,090 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 19:41:15,105 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-22 19:41:15,184 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-22 19:41:15,184 INFO ]: Conjunction of SSA is unsat [2018-06-22 19:41:15,192 INFO ]: Computing forward predicates... [2018-06-22 19:41:16,163 WARN ]: expecting exponential blowup for input size 13 [2018-06-22 19:41:16,645 WARN ]: Simplifying disjunction of 31104 conjuctions. This might take some time... Received shutdown request... [2018-06-22 19:42:28,227 INFO ]: Timeout while computing interpolants [2018-06-22 19:42:28,427 WARN ]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-22 19:42:28,428 WARN ]: Verification canceled [2018-06-22 19:42:28,431 WARN ]: Timeout [2018-06-22 19:42:28,432 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 07:42:28 BoogieIcfgContainer [2018-06-22 19:42:28,432 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 19:42:28,432 INFO ]: Toolchain (without parser) took 78993.12 ms. Allocated memory was 307.8 MB in the beginning and 1.1 GB in the end (delta: 811.1 MB). Free memory was 254.2 MB in the beginning and 253.6 MB in the end (delta: 640.0 kB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 19:42:28,434 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 307.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 19:42:28,434 INFO ]: ChcToBoogie took 85.69 ms. Allocated memory is still 307.8 MB. Free memory was 254.2 MB in the beginning and 252.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:42:28,435 INFO ]: Boogie Preprocessor took 55.18 ms. Allocated memory is still 307.8 MB. Free memory was 252.2 MB in the beginning and 250.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:42:28,435 INFO ]: RCFGBuilder took 231.70 ms. Allocated memory is still 307.8 MB. Free memory was 250.2 MB in the beginning and 234.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. [2018-06-22 19:42:28,436 INFO ]: TraceAbstraction took 78602.21 ms. Allocated memory was 307.8 MB in the beginning and 1.1 GB in the end (delta: 811.1 MB). Free memory was 234.2 MB in the beginning and 253.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 3.6 GB. [2018-06-22 19:42:28,447 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 307.8 MB. Free memory is still 272.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 85.69 ms. Allocated memory is still 307.8 MB. Free memory was 254.2 MB in the beginning and 252.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 55.18 ms. Allocated memory is still 307.8 MB. Free memory was 252.2 MB in the beginning and 250.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 231.70 ms. Allocated memory is still 307.8 MB. Free memory was 250.2 MB in the beginning and 234.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 78602.21 ms. Allocated memory was 307.8 MB in the beginning and 1.1 GB in the end (delta: 811.1 MB). Free memory was 234.2 MB in the beginning and 253.6 MB in the end (delta: -19.3 MB). Peak memory consumption was 1.1 GB. 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 31104 conjuctions. . - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 13 locations, 1 error locations. TIMEOUT Result, 78.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 22 SDtfs, 6 SDslu, 53 SDs, 0 SdLazy, 37 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.5s 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, 0.1s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2616 SizeOfPredicates, 36 NumberOfNonLiveVariables, 322 ConjunctsInSsa, 42 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/PRODUCER_CONSUMER_vt.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_19-42-28-462.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/PRODUCER_CONSUMER_vt.smt2_AutomizerCHC_No_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_19-42-28-462.csv Completed graceful shutdown