java -Xss4m -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_Goto.epf -i /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.10.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 12:34:05,757 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 12:34:05,759 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 12:34:05,770 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 12:34:05,771 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 12:34:05,772 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 12:34:05,773 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 12:34:05,774 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 12:34:05,776 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 12:34:05,777 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 12:34:05,778 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 12:34:05,778 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 12:34:05,779 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 12:34:05,780 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 12:34:05,780 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 12:34:05,781 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 12:34:05,783 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 12:34:05,785 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 12:34:05,786 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 12:34:05,787 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 12:34:05,788 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 12:34:05,791 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 12:34:05,791 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 12:34:05,791 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 12:34:05,792 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 12:34:05,793 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 12:34:05,794 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 12:34:05,794 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 12:34:05,795 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 12:34:05,796 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 12:34:05,796 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 12:34:05,797 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 12:34:05,797 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 12:34:05,798 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 12:34:05,799 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 12:34:05,799 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 12:34:05,813 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 12:34:05,813 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 12:34:05,814 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 12:34:05,814 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 12:34:05,815 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 12:34:05,815 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 12:34:05,815 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 12:34:05,816 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 12:34:05,816 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 12:34:05,816 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 12:34:05,816 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 12:34:05,816 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 12:34:05,817 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 12:34:05,817 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 12:34:05,817 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 12:34:05,817 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 12:34:05,817 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 12:34:05,818 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 12:34:05,818 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 12:34:05,818 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 12:34:05,818 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 12:34:05,820 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 12:34:05,820 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 12:34:05,861 INFO ]: Repository-Root is: /tmp [2018-06-25 12:34:05,879 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 12:34:05,886 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 12:34:05,887 INFO ]: Initializing SmtParser... [2018-06-25 12:34:05,888 INFO ]: SmtParser initialized [2018-06-25 12:34:05,888 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.10.smt2 [2018-06-25 12:34:05,889 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 [2018-06-25 12:34:05,978 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.10.smt2 unknown [2018-06-25 12:34:11,186 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/cav12/transmitter.10.smt2 [2018-06-25 12:34:11,193 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 12:34:11,201 INFO ]: Walking toolchain with 4 elements. [2018-06-25 12:34:11,202 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 12:34:11,202 INFO ]: Initializing ChcToBoogie... [2018-06-25 12:34:11,202 INFO ]: ChcToBoogie initialized [2018-06-25 12:34:11,205 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:34:11" (1/1) ... [2018-06-25 12:34:11,354 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:34:11 Unit [2018-06-25 12:34:11,354 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 12:34:11,355 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 12:34:11,355 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 12:34:11,355 INFO ]: Boogie Preprocessor initialized [2018-06-25 12:34:11,376 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:34:11" (1/1) ... [2018-06-25 12:34:11,376 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:34:11" (1/1) ... [2018-06-25 12:34:11,447 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:34:11" (1/1) ... [2018-06-25 12:34:11,448 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:34:11" (1/1) ... [2018-06-25 12:34:11,525 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:34:11" (1/1) ... [2018-06-25 12:34:11,526 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:34:11" (1/1) ... [2018-06-25 12:34:11,550 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:34:11" (1/1) ... [2018-06-25 12:34:11,577 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 12:34:11,578 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 12:34:11,578 INFO ]: Initializing RCFGBuilder... [2018-06-25 12:34:11,578 INFO ]: RCFGBuilder initialized [2018-06-25 12:34:11,579 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:34:11" (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 [2018-06-25 12:34:11,600 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 12:34:11,600 INFO ]: Found specification of procedure gotoProc [2018-06-25 12:34:11,600 INFO ]: Found implementation of procedure gotoProc [2018-06-25 12:34:11,600 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 12:34:11,600 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 12:34:11,600 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 12:34:15,035 INFO ]: Using library mode [2018-06-25 12:34:15,035 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:34:15 BoogieIcfgContainer [2018-06-25 12:34:15,036 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 12:34:15,037 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 12:34:15,037 INFO ]: Initializing TraceAbstraction... [2018-06-25 12:34:15,039 INFO ]: TraceAbstraction initialized [2018-06-25 12:34:15,040 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 12:34:11" (1/3) ... [2018-06-25 12:34:15,040 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0c4555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 12:34:15, skipping insertion in model container [2018-06-25 12:34:15,040 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 12:34:11" (2/3) ... [2018-06-25 12:34:15,041 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c0c4555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 12:34:15, skipping insertion in model container [2018-06-25 12:34:15,041 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 12:34:15" (3/3) ... [2018-06-25 12:34:15,042 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 12:34:15,051 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 12:34:15,061 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 12:34:15,109 INFO ]: Using default assertion order modulation [2018-06-25 12:34:15,109 INFO ]: Interprodecural is true [2018-06-25 12:34:15,110 INFO ]: Hoare is false [2018-06-25 12:34:15,110 INFO ]: Compute interpolants for FPandBP [2018-06-25 12:34:15,110 INFO ]: Backedges is TWOTRACK [2018-06-25 12:34:15,110 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 12:34:15,110 INFO ]: Difference is false [2018-06-25 12:34:15,110 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 12:34:15,110 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 12:34:15,127 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 12:34:15,144 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 12:34:15,144 INFO ]: Found error trace [2018-06-25 12:34:15,144 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:34:15,145 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:34:15,148 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 12:34:15,150 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:34:15,150 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:34:15,183 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:34:15,183 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:34:15,183 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:34:15,396 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:34:15,640 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:34:15,642 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 12:34:15,642 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 12:34:15,644 INFO ]: Interpolant automaton has 3 states [2018-06-25 12:34:15,657 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 12:34:15,658 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 12:34:15,660 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 12:34:15,965 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:34:15,965 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 12:34:15,966 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 12:34:15,967 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 12:34:15,968 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:34:15,976 INFO ]: With dead ends: 9 [2018-06-25 12:34:15,977 INFO ]: Without dead ends: 9 [2018-06-25 12:34:15,981 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 12:34:15,999 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 12:34:16,026 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 12:34:16,032 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 12:34:16,033 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 12:34:16,034 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 12:34:16,034 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:34:16,034 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 12:34:16,034 INFO ]: Interpolant automaton has 3 states. [2018-06-25 12:34:16,034 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 12:34:16,034 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 12:34:16,034 INFO ]: Found error trace [2018-06-25 12:34:16,035 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:34:16,035 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:34:16,035 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 12:34:16,035 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:34:16,035 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:34:16,036 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:34:16,036 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:34:16,036 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:34:16,645 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:34:17,690 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:34:17,690 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:34:17,690 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 [2018-06-25 12:34:17,706 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:34:18,435 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:34:18,491 INFO ]: Computing forward predicates... [2018-06-25 12:34:18,813 WARN ]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-06-25 12:34:20,894 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:34:20,934 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:34:20,934 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-25 12:34:20,934 INFO ]: Interpolant automaton has 6 states [2018-06-25 12:34:20,934 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 12:34:20,934 INFO ]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-06-25 12:34:20,934 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-25 12:34:21,234 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:34:21,234 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 12:34:21,235 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 12:34:21,235 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-25 12:34:21,235 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:34:21,235 INFO ]: With dead ends: 11 [2018-06-25 12:34:21,235 INFO ]: Without dead ends: 11 [2018-06-25 12:34:21,236 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-06-25 12:34:21,236 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 12:34:21,237 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 12:34:21,237 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 12:34:21,237 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 12:34:21,237 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-25 12:34:21,237 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:34:21,237 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 12:34:21,237 INFO ]: Interpolant automaton has 6 states. [2018-06-25 12:34:21,237 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 12:34:21,238 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 12:34:21,238 INFO ]: Found error trace [2018-06-25 12:34:21,238 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:34:21,238 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:34:21,238 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-25 12:34:21,238 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:34:21,238 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:34:21,239 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:34:21,239 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 12:34:21,239 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:34:22,272 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:34:24,701 WARN ]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 12:34:25,013 WARN ]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 12:34:25,282 WARN ]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2018-06-25 12:34:25,282 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:34:25,282 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:34:25,282 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 [2018-06-25 12:34:25,297 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 12:34:26,493 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 12:34:26,493 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:34:26,611 INFO ]: Computing forward predicates... [2018-06-25 12:34:36,104 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:34:36,135 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 12:34:36,135 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2018-06-25 12:34:36,135 INFO ]: Interpolant automaton has 9 states [2018-06-25 12:34:36,135 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-25 12:34:36,135 INFO ]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-06-25 12:34:36,135 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2018-06-25 12:34:36,676 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 12:34:36,676 INFO ]: Finished difference Result 14 states and 14 transitions. [2018-06-25 12:34:36,676 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-06-25 12:34:36,676 INFO ]: Start accepts. Automaton has 9 states. Word has length 10 [2018-06-25 12:34:36,676 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 12:34:36,676 INFO ]: With dead ends: 14 [2018-06-25 12:34:36,677 INFO ]: Without dead ends: 14 [2018-06-25 12:34:36,677 INFO ]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2018-06-25 12:34:36,677 INFO ]: Start minimizeSevpa. Operand 14 states. [2018-06-25 12:34:36,678 INFO ]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-06-25 12:34:36,678 INFO ]: Start removeUnreachable. Operand 14 states. [2018-06-25 12:34:36,679 INFO ]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-06-25 12:34:36,679 INFO ]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2018-06-25 12:34:36,679 INFO ]: Finished accepts. word is rejected. [2018-06-25 12:34:36,679 INFO ]: Abstraction has 14 states and 14 transitions. [2018-06-25 12:34:36,679 INFO ]: Interpolant automaton has 9 states. [2018-06-25 12:34:36,679 INFO ]: Start isEmpty. Operand 14 states and 14 transitions. [2018-06-25 12:34:36,679 INFO ]: Finished isEmpty. Found accepting run of length 14 [2018-06-25 12:34:36,679 INFO ]: Found error trace [2018-06-25 12:34:36,679 INFO ]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 12:34:36,680 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 12:34:36,680 INFO ]: Analyzing trace with hash 679342766, now seen corresponding path program 3 times [2018-06-25 12:34:36,680 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 12:34:36,680 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 12:34:36,680 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:34:36,681 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-25 12:34:36,681 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 12:34:38,276 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:34:41,768 WARN ]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 12:34:41,985 WARN ]: Spent 100.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2018-06-25 12:34:42,045 INFO ]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 12:34:42,046 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 12:34:42,046 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 [2018-06-25 12:34:42,054 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-25 12:34:44,234 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-06-25 12:34:44,234 INFO ]: Conjunction of SSA is unsat [2018-06-25 12:34:44,431 INFO ]: Computing forward predicates... Received shutdown request... [2018-06-25 12:35:01,445 INFO ]: Timeout while computing interpolants [2018-06-25 12:35:01,647 WARN ]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-25 12:35:01,647 WARN ]: Verification canceled [2018-06-25 12:35:01,650 WARN ]: Timeout [2018-06-25 12:35:01,650 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 12:35:01 BoogieIcfgContainer [2018-06-25 12:35:01,651 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 12:35:01,651 INFO ]: Toolchain (without parser) took 50457.84 ms. Allocated memory was 601.4 MB in the beginning and 1.7 GB in the end (delta: 1.1 GB). Free memory was 487.2 MB in the beginning and 513.7 MB in the end (delta: -26.5 MB). Peak memory consumption was 1.3 GB. Max. memory is 3.6 GB. [2018-06-25 12:35:01,652 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 308.3 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 12:35:01,652 INFO ]: ChcToBoogie took 152.68 ms. Allocated memory is still 601.4 MB. Free memory was 487.2 MB in the beginning and 479.6 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 3.6 GB. [2018-06-25 12:35:01,652 INFO ]: Boogie Preprocessor took 222.59 ms. Allocated memory is still 601.4 MB. Free memory was 479.6 MB in the beginning and 464.5 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 3.6 GB. [2018-06-25 12:35:01,653 INFO ]: RCFGBuilder took 3457.53 ms. Allocated memory was 601.4 MB in the beginning and 864.0 MB in the end (delta: 262.7 MB). Free memory was 464.5 MB in the beginning and 335.1 MB in the end (delta: 129.5 MB). Peak memory consumption was 594.3 MB. Max. memory is 3.6 GB. [2018-06-25 12:35:01,653 INFO ]: TraceAbstraction took 46614.05 ms. Allocated memory was 864.0 MB in the beginning and 1.7 GB in the end (delta: 787.5 MB). Free memory was 335.1 MB in the beginning and 513.7 MB in the end (delta: -178.7 MB). Peak memory consumption was 868.4 MB. Max. memory is 3.6 GB. [2018-06-25 12:35:01,655 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 308.3 MB. Free memory is still 270.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 152.68 ms. Allocated memory is still 601.4 MB. Free memory was 487.2 MB in the beginning and 479.6 MB in the end (delta: 7.5 MB). Peak memory consumption was 7.5 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 222.59 ms. Allocated memory is still 601.4 MB. Free memory was 479.6 MB in the beginning and 464.5 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 3457.53 ms. Allocated memory was 601.4 MB in the beginning and 864.0 MB in the end (delta: 262.7 MB). Free memory was 464.5 MB in the beginning and 335.1 MB in the end (delta: 129.5 MB). Peak memory consumption was 594.3 MB. Max. memory is 3.6 GB. * TraceAbstraction took 46614.05 ms. Allocated memory was 864.0 MB in the beginning and 1.7 GB in the end (delta: 787.5 MB). Free memory was 335.1 MB in the beginning and 513.7 MB in the end (delta: -178.7 MB). Peak memory consumption was 868.4 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 14 with TraceHistMax 6, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1057 quantified variables from 12 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 10 locations, 1 error locations. TIMEOUT Result, 46.5s OverallTime, 4 OverallIterations, 6 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 1 SDslu, 39 SDs, 0 SdLazy, 21 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.7s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 16.3s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 1065 SizeOfPredicates, 6 NumberOfNonLiveVariables, 7858 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/14 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/transmitter.10.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_12-35-01-664.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/transmitter.10.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_12-35-01-664.csv Completed graceful shutdown