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_Goto.epf -i /storage/chc-comp/hopv/lia/mochi/bcopy4.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8d74a04 [2018-06-22 01:40:04,131 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-22 01:40:04,133 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-22 01:40:04,145 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-22 01:40:04,145 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-22 01:40:04,146 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-22 01:40:04,147 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-22 01:40:04,150 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-22 01:40:04,152 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-22 01:40:04,154 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-22 01:40:04,155 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-22 01:40:04,155 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-22 01:40:04,156 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-22 01:40:04,157 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-22 01:40:04,161 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-22 01:40:04,162 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-22 01:40:04,164 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-22 01:40:04,177 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-22 01:40:04,179 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-22 01:40:04,180 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-22 01:40:04,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-22 01:40:04,183 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-22 01:40:04,184 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-22 01:40:04,184 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-22 01:40:04,189 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-22 01:40:04,190 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-22 01:40:04,191 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-22 01:40:04,191 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-22 01:40:04,196 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-22 01:40:04,196 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-22 01:40:04,197 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-22 01:40:04,198 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-22 01:40:04,198 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-22 01:40:04,199 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-22 01:40:04,202 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-22 01:40:04,202 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-22 01:40:04,223 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-22 01:40:04,223 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-22 01:40:04,224 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-22 01:40:04,224 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-22 01:40:04,225 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-22 01:40:04,225 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-22 01:40:04,225 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-22 01:40:04,225 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-22 01:40:04,226 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:40:04,226 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-22 01:40:04,226 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-22 01:40:04,226 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-22 01:40:04,226 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-22 01:40:04,227 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-22 01:40:04,227 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-22 01:40:04,227 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-22 01:40:04,227 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-22 01:40:04,229 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-22 01:40:04,229 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-22 01:40:04,275 INFO ]: Repository-Root is: /tmp [2018-06-22 01:40:04,289 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-22 01:40:04,293 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-22 01:40:04,295 INFO ]: Initializing SmtParser... [2018-06-22 01:40:04,295 INFO ]: SmtParser initialized [2018-06-22 01:40:04,296 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/hopv/lia/mochi/bcopy4.smt2 [2018-06-22 01:40:04,297 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 01:40:04,395 INFO ]: Executing SMT file /storage/chc-comp/hopv/lia/mochi/bcopy4.smt2 unknown [2018-06-22 01:40:04,754 INFO ]: Succesfully executed SMT file /storage/chc-comp/hopv/lia/mochi/bcopy4.smt2 [2018-06-22 01:40:04,759 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-22 01:40:04,766 INFO ]: Walking toolchain with 4 elements. [2018-06-22 01:40:04,767 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-22 01:40:04,767 INFO ]: Initializing ChcToBoogie... [2018-06-22 01:40:04,767 INFO ]: ChcToBoogie initialized [2018-06-22 01:40:04,771 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:40:04" (1/1) ... [2018-06-22 01:40:04,830 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:40:04 Unit [2018-06-22 01:40:04,830 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-22 01:40:04,831 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-22 01:40:04,831 INFO ]: Initializing Boogie Preprocessor... [2018-06-22 01:40:04,831 INFO ]: Boogie Preprocessor initialized [2018-06-22 01:40:04,855 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:40:04" (1/1) ... [2018-06-22 01:40:04,855 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:40:04" (1/1) ... [2018-06-22 01:40:04,862 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:40:04" (1/1) ... [2018-06-22 01:40:04,862 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:40:04" (1/1) ... [2018-06-22 01:40:04,866 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:40:04" (1/1) ... [2018-06-22 01:40:04,869 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:40:04" (1/1) ... [2018-06-22 01:40:04,879 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:40:04" (1/1) ... [2018-06-22 01:40:04,880 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-22 01:40:04,881 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-22 01:40:04,881 INFO ]: Initializing RCFGBuilder... [2018-06-22 01:40:04,881 INFO ]: RCFGBuilder initialized [2018-06-22 01:40:04,882 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:40:04" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-22 01:40:04,906 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-22 01:40:04,906 INFO ]: Found specification of procedure gotoProc [2018-06-22 01:40:04,906 INFO ]: Found implementation of procedure gotoProc [2018-06-22 01:40:04,906 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-22 01:40:04,906 INFO ]: Found specification of procedure Ultimate.START [2018-06-22 01:40:04,906 INFO ]: Found implementation of procedure Ultimate.START [2018-06-22 01:40:05,261 INFO ]: Using library mode [2018-06-22 01:40:05,261 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:40:05 BoogieIcfgContainer [2018-06-22 01:40:05,262 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-22 01:40:05,265 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-22 01:40:05,265 INFO ]: Initializing TraceAbstraction... [2018-06-22 01:40:05,269 INFO ]: TraceAbstraction initialized [2018-06-22 01:40:05,269 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 22.06 01:40:04" (1/3) ... [2018-06-22 01:40:05,270 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8f84e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 22.06 01:40:05, skipping insertion in model container [2018-06-22 01:40:05,270 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 22.06 01:40:04" (2/3) ... [2018-06-22 01:40:05,270 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8f84e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.06 01:40:05, skipping insertion in model container [2018-06-22 01:40:05,271 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.06 01:40:05" (3/3) ... [2018-06-22 01:40:05,273 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-22 01:40:05,280 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-22 01:40:05,288 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-22 01:40:05,335 INFO ]: Using default assertion order modulation [2018-06-22 01:40:05,336 INFO ]: Interprodecural is true [2018-06-22 01:40:05,336 INFO ]: Hoare is false [2018-06-22 01:40:05,336 INFO ]: Compute interpolants for FPandBP [2018-06-22 01:40:05,336 INFO ]: Backedges is TWOTRACK [2018-06-22 01:40:05,336 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-22 01:40:05,336 INFO ]: Difference is false [2018-06-22 01:40:05,336 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-22 01:40:05,336 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-22 01:40:05,351 INFO ]: Start isEmpty. Operand 20 states. [2018-06-22 01:40:05,365 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-22 01:40:05,365 INFO ]: Found error trace [2018-06-22 01:40:05,366 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:40:05,366 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:40:05,371 INFO ]: Analyzing trace with hash 2073026571, now seen corresponding path program 1 times [2018-06-22 01:40:05,372 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:40:05,373 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:40:05,411 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:40:05,411 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:40:05,411 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:40:05,443 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:40:05,538 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:40:05,540 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:40:05,540 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:40:05,542 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:40:05,553 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:40:05,553 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:40:05,555 INFO ]: Start difference. First operand 20 states. Second operand 4 states. [2018-06-22 01:40:05,728 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:40:05,728 INFO ]: Finished difference Result 31 states and 39 transitions. [2018-06-22 01:40:05,729 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:40:05,730 INFO ]: Start accepts. Automaton has 4 states. Word has length 8 [2018-06-22 01:40:05,730 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:40:05,739 INFO ]: With dead ends: 31 [2018-06-22 01:40:05,739 INFO ]: Without dead ends: 31 [2018-06-22 01:40:05,741 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:40:05,762 INFO ]: Start minimizeSevpa. Operand 31 states. [2018-06-22 01:40:05,791 INFO ]: Finished minimizeSevpa. Reduced states from 31 to 31. [2018-06-22 01:40:05,793 INFO ]: Start removeUnreachable. Operand 31 states. [2018-06-22 01:40:05,795 INFO ]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2018-06-22 01:40:05,796 INFO ]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 8 [2018-06-22 01:40:05,796 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:40:05,796 INFO ]: Abstraction has 31 states and 39 transitions. [2018-06-22 01:40:05,796 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:40:05,796 INFO ]: Start isEmpty. Operand 31 states and 39 transitions. [2018-06-22 01:40:05,798 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-22 01:40:05,798 INFO ]: Found error trace [2018-06-22 01:40:05,798 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:40:05,798 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:40:05,798 INFO ]: Analyzing trace with hash -144309977, now seen corresponding path program 1 times [2018-06-22 01:40:05,798 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:40:05,798 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:40:05,799 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:40:05,799 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:40:05,799 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:40:05,803 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:40:05,863 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:40:05,863 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:40:05,863 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-22 01:40:05,865 INFO ]: Interpolant automaton has 4 states [2018-06-22 01:40:05,865 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-22 01:40:05,865 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-22 01:40:05,866 INFO ]: Start difference. First operand 31 states and 39 transitions. Second operand 4 states. [2018-06-22 01:40:06,105 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:40:06,106 INFO ]: Finished difference Result 44 states and 56 transitions. [2018-06-22 01:40:06,107 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-22 01:40:06,107 INFO ]: Start accepts. Automaton has 4 states. Word has length 9 [2018-06-22 01:40:06,107 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:40:06,108 INFO ]: With dead ends: 44 [2018-06-22 01:40:06,108 INFO ]: Without dead ends: 44 [2018-06-22 01:40:06,109 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-22 01:40:06,109 INFO ]: Start minimizeSevpa. Operand 44 states. [2018-06-22 01:40:06,118 INFO ]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-06-22 01:40:06,118 INFO ]: Start removeUnreachable. Operand 44 states. [2018-06-22 01:40:06,120 INFO ]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2018-06-22 01:40:06,120 INFO ]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 9 [2018-06-22 01:40:06,121 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:40:06,121 INFO ]: Abstraction has 44 states and 56 transitions. [2018-06-22 01:40:06,121 INFO ]: Interpolant automaton has 4 states. [2018-06-22 01:40:06,121 INFO ]: Start isEmpty. Operand 44 states and 56 transitions. [2018-06-22 01:40:06,123 INFO ]: Finished isEmpty. Found accepting run of length 11 [2018-06-22 01:40:06,123 INFO ]: Found error trace [2018-06-22 01:40:06,123 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:40:06,123 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:40:06,123 INFO ]: Analyzing trace with hash 932106156, now seen corresponding path program 1 times [2018-06-22 01:40:06,123 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:40:06,123 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:40:06,124 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:40:06,124 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:40:06,124 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:40:06,145 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:40:06,242 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-22 01:40:06,242 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-22 01:40:06,242 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-22 01:40:06,242 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:40:06,243 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:40:06,243 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:40:06,243 INFO ]: Start difference. First operand 44 states and 56 transitions. Second operand 3 states. [2018-06-22 01:40:06,306 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:40:06,306 INFO ]: Finished difference Result 52 states and 67 transitions. [2018-06-22 01:40:06,310 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:40:06,311 INFO ]: Start accepts. Automaton has 3 states. Word has length 10 [2018-06-22 01:40:06,311 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:40:06,314 INFO ]: With dead ends: 52 [2018-06-22 01:40:06,315 INFO ]: Without dead ends: 52 [2018-06-22 01:40:06,319 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 [2018-06-22 01:40:06,319 INFO ]: Start minimizeSevpa. Operand 52 states. [2018-06-22 01:40:06,332 INFO ]: Finished minimizeSevpa. Reduced states from 52 to 46. [2018-06-22 01:40:06,333 INFO ]: Start removeUnreachable. Operand 46 states. [2018-06-22 01:40:06,337 INFO ]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2018-06-22 01:40:06,337 INFO ]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 10 [2018-06-22 01:40:06,337 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:40:06,337 INFO ]: Abstraction has 46 states and 57 transitions. [2018-06-22 01:40:06,337 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:40:06,337 INFO ]: Start isEmpty. Operand 46 states and 57 transitions. [2018-06-22 01:40:06,339 INFO ]: Finished isEmpty. Found accepting run of length 29 [2018-06-22 01:40:06,339 INFO ]: Found error trace [2018-06-22 01:40:06,339 INFO ]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-22 01:40:06,339 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-22 01:40:06,339 INFO ]: Analyzing trace with hash 136845178, now seen corresponding path program 1 times [2018-06-22 01:40:06,340 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-22 01:40:06,340 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-22 01:40:06,340 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:40:06,340 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:40:06,340 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-22 01:40:06,383 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:40:06,498 INFO ]: Checked inductivity of 15 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 01:40:06,498 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-22 01:40:06,498 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 01:40:06,523 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-22 01:40:06,600 INFO ]: Conjunction of SSA is unsat [2018-06-22 01:40:06,613 INFO ]: Computing forward predicates... [2018-06-22 01:40:06,672 INFO ]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-06-22 01:40:06,694 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-22 01:40:06,694 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-06-22 01:40:06,694 INFO ]: Interpolant automaton has 3 states [2018-06-22 01:40:06,695 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-22 01:40:06,695 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:40:06,695 INFO ]: Start difference. First operand 46 states and 57 transitions. Second operand 3 states. [2018-06-22 01:40:06,712 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-22 01:40:06,712 INFO ]: Finished difference Result 36 states and 43 transitions. [2018-06-22 01:40:06,713 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-22 01:40:06,713 INFO ]: Start accepts. Automaton has 3 states. Word has length 28 [2018-06-22 01:40:06,713 INFO ]: Finished accepts. some prefix is accepted. [2018-06-22 01:40:06,713 INFO ]: With dead ends: 36 [2018-06-22 01:40:06,713 INFO ]: Without dead ends: 0 [2018-06-22 01:40:06,713 INFO ]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-22 01:40:06,713 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-22 01:40:06,713 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-22 01:40:06,713 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-22 01:40:06,713 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-22 01:40:06,714 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2018-06-22 01:40:06,714 INFO ]: Finished accepts. word is rejected. [2018-06-22 01:40:06,714 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-22 01:40:06,714 INFO ]: Interpolant automaton has 3 states. [2018-06-22 01:40:06,714 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-22 01:40:06,714 INFO ]: Finished isEmpty. No accepting run. [2018-06-22 01:40:06,719 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.06 01:40:06 BoogieIcfgContainer [2018-06-22 01:40:06,720 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-22 01:40:06,720 INFO ]: Toolchain (without parser) took 1960.98 ms. Allocated memory is still 309.3 MB. Free memory was 259.9 MB in the beginning and 196.5 MB in the end (delta: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 3.6 GB. [2018-06-22 01:40:06,722 INFO ]: SmtParser took 0.10 ms. Allocated memory is still 309.3 MB. Free memory is still 274.0 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-22 01:40:06,722 INFO ]: ChcToBoogie took 64.01 ms. Allocated memory is still 309.3 MB. Free memory was 259.9 MB in the beginning and 257.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:40:06,723 INFO ]: Boogie Preprocessor took 49.06 ms. Allocated memory is still 309.3 MB. Free memory was 257.9 MB in the beginning and 255.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:40:06,724 INFO ]: RCFGBuilder took 380.63 ms. Allocated memory is still 309.3 MB. Free memory was 255.9 MB in the beginning and 245.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-22 01:40:06,724 INFO ]: TraceAbstraction took 1454.43 ms. Allocated memory is still 309.3 MB. Free memory was 245.9 MB in the beginning and 196.5 MB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. Max. memory is 3.6 GB. [2018-06-22 01:40:06,728 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.10 ms. Allocated memory is still 309.3 MB. Free memory is still 274.0 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 64.01 ms. Allocated memory is still 309.3 MB. Free memory was 259.9 MB in the beginning and 257.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 49.06 ms. Allocated memory is still 309.3 MB. Free memory was 257.9 MB in the beginning and 255.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 380.63 ms. Allocated memory is still 309.3 MB. Free memory was 255.9 MB in the beginning and 245.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1454.43 ms. Allocated memory is still 309.3 MB. Free memory was 245.9 MB in the beginning and 196.5 MB in the end (delta: 49.4 MB). Peak memory consumption was 49.4 MB. 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, 20 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 61 SDslu, 49 SDs, 0 SdLazy, 61 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 2061 SizeOfPredicates, 5 NumberOfNonLiveVariables, 107 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 29/30 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/bcopy4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-22_01-40-06-739.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/bcopy4.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-22_01-40-06-739.csv Received shutdown request...