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/lustre/stalmark_e7_27_e7_31.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 17:16:57,143 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 17:16:57,146 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 17:16:57,162 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 17:16:57,162 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 17:16:57,163 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 17:16:57,164 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 17:16:57,169 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 17:16:57,171 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 17:16:57,172 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 17:16:57,175 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 17:16:57,175 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 17:16:57,178 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 17:16:57,179 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 17:16:57,183 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 17:16:57,184 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 17:16:57,185 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 17:16:57,197 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 17:16:57,199 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 17:16:57,200 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 17:16:57,204 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 17:16:57,207 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 17:16:57,207 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 17:16:57,207 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 17:16:57,208 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 17:16:57,211 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 17:16:57,212 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 17:16:57,213 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 17:16:57,214 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 17:16:57,217 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 17:16:57,217 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 17:16:57,218 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 17:16:57,218 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 17:16:57,219 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 17:16:57,221 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 17:16:57,221 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 17:16:57,246 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 17:16:57,247 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 17:16:57,248 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 17:16:57,248 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 17:16:57,249 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 17:16:57,249 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 17:16:57,250 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 17:16:57,250 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 17:16:57,250 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 17:16:57,250 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 17:16:57,250 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 17:16:57,253 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 17:16:57,253 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 17:16:57,254 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 17:16:57,254 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 17:16:57,254 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 17:16:57,254 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 17:16:57,254 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 17:16:57,255 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 17:16:57,255 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 17:16:57,255 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 17:16:57,258 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 17:16:57,258 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 17:16:57,325 INFO ]: Repository-Root is: /tmp [2018-06-25 17:16:57,341 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 17:16:57,345 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 17:16:57,347 INFO ]: Initializing SmtParser... [2018-06-25 17:16:57,347 INFO ]: SmtParser initialized [2018-06-25 17:16:57,348 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/vmt-chc-benchmarks/lustre/stalmark_e7_27_e7_31.smt2 [2018-06-25 17:16:57,349 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 17:16:57,460 INFO ]: Executing SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/stalmark_e7_27_e7_31.smt2 unknown [2018-06-25 17:16:57,708 INFO ]: Succesfully executed SMT file /storage/chc-comp/vmt-chc-benchmarks/lustre/stalmark_e7_27_e7_31.smt2 [2018-06-25 17:16:57,714 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 17:16:57,722 INFO ]: Walking toolchain with 4 elements. [2018-06-25 17:16:57,722 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 17:16:57,723 INFO ]: Initializing ChcToBoogie... [2018-06-25 17:16:57,723 INFO ]: ChcToBoogie initialized [2018-06-25 17:16:57,726 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 05:16:57" (1/1) ... [2018-06-25 17:16:57,786 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:16:57 Unit [2018-06-25 17:16:57,786 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 17:16:57,789 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 17:16:57,789 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 17:16:57,789 INFO ]: Boogie Preprocessor initialized [2018-06-25 17:16:57,815 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:16:57" (1/1) ... [2018-06-25 17:16:57,815 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:16:57" (1/1) ... [2018-06-25 17:16:57,822 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:16:57" (1/1) ... [2018-06-25 17:16:57,822 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:16:57" (1/1) ... [2018-06-25 17:16:57,824 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:16:57" (1/1) ... [2018-06-25 17:16:57,827 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:16:57" (1/1) ... [2018-06-25 17:16:57,828 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:16:57" (1/1) ... [2018-06-25 17:16:57,829 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 17:16:57,830 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 17:16:57,830 INFO ]: Initializing RCFGBuilder... [2018-06-25 17:16:57,830 INFO ]: RCFGBuilder initialized [2018-06-25 17:16:57,839 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:16:57" (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 17:16:57,881 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 17:16:57,881 INFO ]: Found specification of procedure gotoProc [2018-06-25 17:16:57,881 INFO ]: Found implementation of procedure gotoProc [2018-06-25 17:16:57,882 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 17:16:57,882 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 17:16:57,882 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 17:16:58,083 INFO ]: Using library mode [2018-06-25 17:16:58,084 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 05:16:58 BoogieIcfgContainer [2018-06-25 17:16:58,084 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 17:16:58,085 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 17:16:58,085 INFO ]: Initializing TraceAbstraction... [2018-06-25 17:16:58,091 INFO ]: TraceAbstraction initialized [2018-06-25 17:16:58,092 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 05:16:57" (1/3) ... [2018-06-25 17:16:58,093 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b1ba50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 05:16:58, skipping insertion in model container [2018-06-25 17:16:58,093 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 05:16:57" (2/3) ... [2018-06-25 17:16:58,093 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35b1ba50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 05:16:58, skipping insertion in model container [2018-06-25 17:16:58,093 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 05:16:58" (3/3) ... [2018-06-25 17:16:58,096 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 17:16:58,106 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 17:16:58,116 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 17:16:58,188 INFO ]: Using default assertion order modulation [2018-06-25 17:16:58,188 INFO ]: Interprodecural is true [2018-06-25 17:16:58,189 INFO ]: Hoare is false [2018-06-25 17:16:58,189 INFO ]: Compute interpolants for FPandBP [2018-06-25 17:16:58,189 INFO ]: Backedges is TWOTRACK [2018-06-25 17:16:58,189 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 17:16:58,189 INFO ]: Difference is false [2018-06-25 17:16:58,189 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 17:16:58,189 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 17:16:58,208 INFO ]: Start isEmpty. Operand 10 states. [2018-06-25 17:16:58,228 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 17:16:58,236 INFO ]: Found error trace [2018-06-25 17:16:58,237 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:16:58,237 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:16:58,243 INFO ]: Analyzing trace with hash 1284994894, now seen corresponding path program 1 times [2018-06-25 17:16:58,245 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:16:58,246 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:16:58,309 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:16:58,310 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:16:58,310 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:16:58,362 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:16:58,512 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:16:58,515 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 17:16:58,515 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 17:16:58,517 INFO ]: Interpolant automaton has 3 states [2018-06-25 17:16:58,535 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 17:16:58,535 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 17:16:58,543 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-25 17:16:58,651 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 17:16:58,652 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 17:16:58,652 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 17:16:58,653 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 17:16:58,654 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 17:16:58,674 INFO ]: With dead ends: 9 [2018-06-25 17:16:58,674 INFO ]: Without dead ends: 9 [2018-06-25 17:16:58,676 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 17:16:58,705 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-25 17:16:58,736 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-25 17:16:58,744 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-25 17:16:58,744 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-25 17:16:58,746 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2018-06-25 17:16:58,746 INFO ]: Finished accepts. word is rejected. [2018-06-25 17:16:58,746 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-25 17:16:58,746 INFO ]: Interpolant automaton has 3 states. [2018-06-25 17:16:58,746 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-25 17:16:58,746 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-25 17:16:58,746 INFO ]: Found error trace [2018-06-25 17:16:58,746 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:16:58,747 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:16:58,747 INFO ]: Analyzing trace with hash 1180964567, now seen corresponding path program 1 times [2018-06-25 17:16:58,747 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:16:58,747 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:16:58,748 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:16:58,748 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:16:58,748 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:16:58,785 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:16:58,989 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:16:58,989 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 17:16:58,989 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 17:16:59,003 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:16:59,074 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:16:59,094 INFO ]: Computing forward predicates... [2018-06-25 17:16:59,329 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:16:59,365 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 17:16:59,365 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-25 17:16:59,366 INFO ]: Interpolant automaton has 6 states [2018-06-25 17:16:59,366 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-25 17:16:59,366 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-25 17:16:59,366 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 6 states. [2018-06-25 17:16:59,491 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 17:16:59,491 INFO ]: Finished difference Result 11 states and 11 transitions. [2018-06-25 17:16:59,500 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-25 17:16:59,500 INFO ]: Start accepts. Automaton has 6 states. Word has length 8 [2018-06-25 17:16:59,500 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 17:16:59,501 INFO ]: With dead ends: 11 [2018-06-25 17:16:59,501 INFO ]: Without dead ends: 11 [2018-06-25 17:16:59,502 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-06-25 17:16:59,502 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 17:16:59,503 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 17:16:59,503 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 17:16:59,503 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2018-06-25 17:16:59,503 INFO ]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2018-06-25 17:16:59,503 INFO ]: Finished accepts. word is rejected. [2018-06-25 17:16:59,503 INFO ]: Abstraction has 11 states and 11 transitions. [2018-06-25 17:16:59,503 INFO ]: Interpolant automaton has 6 states. [2018-06-25 17:16:59,503 INFO ]: Start isEmpty. Operand 11 states and 11 transitions. [2018-06-25 17:16:59,504 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-25 17:16:59,504 INFO ]: Found error trace [2018-06-25 17:16:59,504 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2018-06-25 17:16:59,505 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 17:16:59,505 INFO ]: Analyzing trace with hash 1062095287, now seen corresponding path program 2 times [2018-06-25 17:16:59,505 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 17:16:59,505 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 17:16:59,506 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:16:59,506 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 17:16:59,506 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 17:16:59,590 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:16:59,955 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:16:59,955 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-25 17:16:59,955 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 17:16:59,965 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-25 17:17:00,031 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-25 17:17:00,031 INFO ]: Conjunction of SSA is unsat [2018-06-25 17:17:00,042 INFO ]: Computing forward predicates... [2018-06-25 17:17:00,667 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 17:17:00,702 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-25 17:17:00,702 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2018-06-25 17:17:00,702 INFO ]: Interpolant automaton has 8 states [2018-06-25 17:17:00,702 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-25 17:17:00,703 INFO ]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-06-25 17:17:00,703 INFO ]: Start difference. First operand 11 states and 11 transitions. Second operand 8 states. [2018-06-25 17:17:01,107 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 17:17:01,107 INFO ]: Finished difference Result 9 states and 9 transitions. [2018-06-25 17:17:01,108 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-25 17:17:01,108 INFO ]: Start accepts. Automaton has 8 states. Word has length 10 [2018-06-25 17:17:01,108 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 17:17:01,108 INFO ]: With dead ends: 9 [2018-06-25 17:17:01,108 INFO ]: Without dead ends: 0 [2018-06-25 17:17:01,108 INFO ]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-06-25 17:17:01,108 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-25 17:17:01,108 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-25 17:17:01,109 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-25 17:17:01,109 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-25 17:17:01,109 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2018-06-25 17:17:01,109 INFO ]: Finished accepts. word is rejected. [2018-06-25 17:17:01,109 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-25 17:17:01,109 INFO ]: Interpolant automaton has 8 states. [2018-06-25 17:17:01,109 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-25 17:17:01,109 INFO ]: Finished isEmpty. No accepting run. [2018-06-25 17:17:01,114 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 05:17:01 BoogieIcfgContainer [2018-06-25 17:17:01,114 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 17:17:01,115 INFO ]: Toolchain (without parser) took 3400.88 ms. Allocated memory was 301.5 MB in the beginning and 325.6 MB in the end (delta: 24.1 MB). Free memory was 256.0 MB in the beginning and 288.0 MB in the end (delta: -32.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 17:17:01,117 INFO ]: SmtParser took 0.09 ms. Allocated memory is still 301.5 MB. Free memory is still 266.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 17:17:01,117 INFO ]: ChcToBoogie took 65.70 ms. Allocated memory is still 301.5 MB. Free memory was 256.0 MB in the beginning and 254.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 17:17:01,118 INFO ]: Boogie Preprocessor took 40.56 ms. Allocated memory is still 301.5 MB. Free memory was 254.0 MB in the beginning and 252.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-25 17:17:01,119 INFO ]: RCFGBuilder took 254.47 ms. Allocated memory is still 301.5 MB. Free memory was 252.0 MB in the beginning and 244.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-25 17:17:01,121 INFO ]: TraceAbstraction took 3028.88 ms. Allocated memory was 301.5 MB in the beginning and 325.6 MB in the end (delta: 24.1 MB). Free memory was 244.0 MB in the beginning and 288.0 MB in the end (delta: -44.0 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 17:17:01,125 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.09 ms. Allocated memory is still 301.5 MB. Free memory is still 266.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 65.70 ms. Allocated memory is still 301.5 MB. Free memory was 256.0 MB in the beginning and 254.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 40.56 ms. Allocated memory is still 301.5 MB. Free memory was 254.0 MB in the beginning and 252.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 254.47 ms. Allocated memory is still 301.5 MB. Free memory was 252.0 MB in the beginning and 244.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3028.88 ms. Allocated memory was 301.5 MB in the beginning and 325.6 MB in the end (delta: 24.1 MB). Free memory was 244.0 MB in the beginning and 288.0 MB in the end (delta: -44.0 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 2 procedures, 10 locations, 1 error locations. SAFE Result, 2.9s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 0 SDslu, 30 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 406 SizeOfPredicates, 4 NumberOfNonLiveVariables, 146 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/14 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/stalmark_e7_27_e7_31.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_17-17-01-145.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/stalmark_e7_27_e7_31.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_17-17-01-145.csv Received shutdown request...