java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/HOLA/26.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:41:47,129 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:41:47,131 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:41:47,145 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:41:47,145 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:41:47,148 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:41:47,150 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:41:47,152 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:41:47,153 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:41:47,155 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:41:47,156 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:41:47,156 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:41:47,157 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:41:47,158 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:41:47,162 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:41:47,163 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:41:47,165 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:41:47,177 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:41:47,179 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:41:47,180 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:41:47,181 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:41:47,183 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:41:47,183 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:41:47,183 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:41:47,184 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:41:47,185 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:41:47,189 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:41:47,190 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:41:47,191 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:41:47,191 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:41:47,192 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:41:47,192 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:41:47,193 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:41:47,193 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:41:47,194 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:41:47,194 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:41:47,222 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:41:47,222 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:41:47,228 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:41:47,228 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:41:47,229 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:41:47,229 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:41:47,230 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:41:47,230 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:41:47,230 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:41:47,230 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:41:47,230 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:41:47,231 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:41:47,231 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:41:47,231 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:41:47,231 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:41:47,231 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:41:47,231 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:41:47,232 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:41:47,232 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:41:47,232 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:41:47,232 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:41:47,233 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:41:47,234 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:41:47,284 INFO ]: Repository-Root is: /tmp [2018-06-24 20:41:47,301 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:41:47,306 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:41:47,307 INFO ]: Initializing SmtParser... [2018-06-24 20:41:47,308 INFO ]: SmtParser initialized [2018-06-24 20:41:47,308 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/26.c.smt2 [2018-06-24 20:41:47,309 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 [2018-06-24 20:41:47,396 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/26.c.smt2 unknown [2018-06-24 20:41:48,103 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/26.c.smt2 [2018-06-24 20:41:48,108 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:41:48,115 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:41:48,116 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:41:48,116 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:41:48,116 INFO ]: ChcToBoogie initialized [2018-06-24 20:41:48,120 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:41:48" (1/1) ... [2018-06-24 20:41:48,216 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:41:48 Unit [2018-06-24 20:41:48,216 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:41:48,217 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:41:48,217 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:41:48,217 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:41:48,237 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:41:48" (1/1) ... [2018-06-24 20:41:48,238 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:41:48" (1/1) ... [2018-06-24 20:41:48,264 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:41:48" (1/1) ... [2018-06-24 20:41:48,264 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:41:48" (1/1) ... [2018-06-24 20:41:48,272 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:41:48" (1/1) ... [2018-06-24 20:41:48,285 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:41:48" (1/1) ... [2018-06-24 20:41:48,288 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:41:48" (1/1) ... [2018-06-24 20:41:48,295 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:41:48,296 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:41:48,296 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:41:48,296 INFO ]: RCFGBuilder initialized [2018-06-24 20:41:48,297 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:41:48" (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 [2018-06-24 20:41:48,309 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:41:48,309 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:41:48,309 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:41:48,309 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:41:48,309 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:41:48,309 INFO ]: Found implementation of procedure Ultimate.START [2018-06-24 20:41:49,540 INFO ]: Using library mode [2018-06-24 20:41:49,540 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:41:49 BoogieIcfgContainer [2018-06-24 20:41:49,540 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:41:49,541 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:41:49,541 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:41:49,543 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:41:49,544 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:41:49" (1/1) ... [2018-06-24 20:41:49,568 INFO ]: Initial Icfg 58 locations, 68 edges [2018-06-24 20:41:49,570 INFO ]: Using Remove infeasible edges [2018-06-24 20:41:49,570 INFO ]: Using Maximize final states [2018-06-24 20:41:49,570 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:41:49,571 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:41:49,575 INFO ]: Using Remove sink states [2018-06-24 20:41:49,575 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:41:49,575 INFO ]: Using Use SBE [2018-06-24 20:41:49,596 INFO ]: SBE split 0 edges [2018-06-24 20:41:49,604 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 20:41:49,606 INFO ]: 0 new accepting states [2018-06-24 20:41:51,125 INFO ]: Removed 127 edges and 46 locations by large block encoding [2018-06-24 20:41:51,127 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:41:51,128 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:41:51,128 INFO ]: 0 new accepting states [2018-06-24 20:41:51,129 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:41:51,130 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:41:51,130 INFO ]: Encoded RCFG 10 locations, 20 edges [2018-06-24 20:41:51,130 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:41:51 BasicIcfg [2018-06-24 20:41:51,130 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:41:51,131 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:41:51,132 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:41:51,135 INFO ]: TraceAbstraction initialized [2018-06-24 20:41:51,135 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:41:48" (1/4) ... [2018-06-24 20:41:51,136 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2a7a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:41:51, skipping insertion in model container [2018-06-24 20:41:51,136 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:41:48" (2/4) ... [2018-06-24 20:41:51,136 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2a7a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:41:51, skipping insertion in model container [2018-06-24 20:41:51,136 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:41:49" (3/4) ... [2018-06-24 20:41:51,137 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2a7a0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:41:51, skipping insertion in model container [2018-06-24 20:41:51,137 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:41:51" (4/4) ... [2018-06-24 20:41:51,139 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:41:51,149 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:41:51,160 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:41:51,203 INFO ]: Using default assertion order modulation [2018-06-24 20:41:51,204 INFO ]: Interprodecural is true [2018-06-24 20:41:51,204 INFO ]: Hoare is false [2018-06-24 20:41:51,204 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:41:51,204 INFO ]: Backedges is TWOTRACK [2018-06-24 20:41:51,204 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:41:51,204 INFO ]: Difference is false [2018-06-24 20:41:51,204 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:41:51,204 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:41:51,216 INFO ]: Start isEmpty. Operand 10 states. [2018-06-24 20:41:51,226 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:41:51,226 INFO ]: Found error trace [2018-06-24 20:41:51,227 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:41:51,227 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:41:51,232 INFO ]: Analyzing trace with hash 72345226, now seen corresponding path program 1 times [2018-06-24 20:41:51,234 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:41:51,235 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:41:51,281 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:41:51,281 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:41:51,281 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:41:51,360 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:41:51,562 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:41:51,565 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:41:51,565 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:41:51,567 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:41:51,582 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:41:51,582 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:41:51,584 INFO ]: Start difference. First operand 10 states. Second operand 3 states. [2018-06-24 20:41:51,712 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:41:51,712 INFO ]: Finished difference Result 15 states and 34 transitions. [2018-06-24 20:41:51,713 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:41:51,714 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:41:51,714 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:41:51,728 INFO ]: With dead ends: 15 [2018-06-24 20:41:51,728 INFO ]: Without dead ends: 15 [2018-06-24 20:41:51,730 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:41:51,751 INFO ]: Start minimizeSevpa. Operand 15 states. [2018-06-24 20:41:51,769 INFO ]: Finished minimizeSevpa. Reduced states from 15 to 11. [2018-06-24 20:41:51,770 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 20:41:51,771 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 21 transitions. [2018-06-24 20:41:51,772 INFO ]: Start accepts. Automaton has 11 states and 21 transitions. Word has length 5 [2018-06-24 20:41:51,772 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:41:51,772 INFO ]: Abstraction has 11 states and 21 transitions. [2018-06-24 20:41:51,772 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:41:51,772 INFO ]: Start isEmpty. Operand 11 states and 21 transitions. [2018-06-24 20:41:51,773 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 20:41:51,773 INFO ]: Found error trace [2018-06-24 20:41:51,773 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:41:51,773 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:41:51,773 INFO ]: Analyzing trace with hash -702435783, now seen corresponding path program 1 times [2018-06-24 20:41:51,773 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:41:51,773 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:41:51,774 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:41:51,774 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:41:51,774 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:41:51,840 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:41:51,976 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:41:51,977 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:41:51,977 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 20:41:51,978 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:41:51,978 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:41:51,978 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:41:51,979 INFO ]: Start difference. First operand 11 states and 21 transitions. Second operand 5 states. [2018-06-24 20:41:52,446 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:41:52,446 INFO ]: Finished difference Result 20 states and 45 transitions. [2018-06-24 20:41:52,447 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 20:41:52,447 INFO ]: Start accepts. Automaton has 5 states. Word has length 8 [2018-06-24 20:41:52,447 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:41:52,449 INFO ]: With dead ends: 20 [2018-06-24 20:41:52,449 INFO ]: Without dead ends: 20 [2018-06-24 20:41:52,450 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:41:52,450 INFO ]: Start minimizeSevpa. Operand 20 states. [2018-06-24 20:41:52,453 INFO ]: Finished minimizeSevpa. Reduced states from 20 to 13. [2018-06-24 20:41:52,453 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-24 20:41:52,453 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 27 transitions. [2018-06-24 20:41:52,453 INFO ]: Start accepts. Automaton has 13 states and 27 transitions. Word has length 8 [2018-06-24 20:41:52,453 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:41:52,453 INFO ]: Abstraction has 13 states and 27 transitions. [2018-06-24 20:41:52,453 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:41:52,453 INFO ]: Start isEmpty. Operand 13 states and 27 transitions. [2018-06-24 20:41:52,454 INFO ]: Finished isEmpty. Found accepting run of length 12 [2018-06-24 20:41:52,454 INFO ]: Found error trace [2018-06-24 20:41:52,454 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:41:52,454 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:41:52,454 INFO ]: Analyzing trace with hash 654075401, now seen corresponding path program 1 times [2018-06-24 20:41:52,454 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:41:52,454 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:41:52,455 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:41:52,455 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:41:52,455 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:41:52,492 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:41:52,644 INFO ]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:41:52,644 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:41:52,644 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-24 20:41:52,644 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:41:52,644 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:41:52,644 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:41:52,645 INFO ]: Start difference. First operand 13 states and 27 transitions. Second operand 5 states. [2018-06-24 20:41:52,761 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:41:52,761 INFO ]: Finished difference Result 7 states and 13 transitions. [2018-06-24 20:41:52,762 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:41:52,762 INFO ]: Start accepts. Automaton has 5 states. Word has length 11 [2018-06-24 20:41:52,762 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:41:52,762 INFO ]: With dead ends: 7 [2018-06-24 20:41:52,762 INFO ]: Without dead ends: 0 [2018-06-24 20:41:52,762 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:41:52,763 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 20:41:52,763 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 20:41:52,763 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 20:41:52,763 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 20:41:52,763 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-06-24 20:41:52,763 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:41:52,763 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 20:41:52,763 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:41:52,763 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 20:41:52,763 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 20:41:52,769 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:41:52,771 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:41:52 BasicIcfg [2018-06-24 20:41:52,771 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:41:52,772 INFO ]: Toolchain (without parser) took 4663.02 ms. Allocated memory was 306.7 MB in the beginning and 359.7 MB in the end (delta: 53.0 MB). Free memory was 223.2 MB in the beginning and 196.7 MB in the end (delta: 26.5 MB). Peak memory consumption was 79.4 MB. Max. memory is 3.6 GB. [2018-06-24 20:41:52,774 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 269.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:41:52,774 INFO ]: ChcToBoogie took 100.53 ms. Allocated memory is still 306.7 MB. Free memory was 223.2 MB in the beginning and 219.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:41:52,780 INFO ]: Boogie Preprocessor took 78.52 ms. Allocated memory is still 306.7 MB. Free memory was 219.2 MB in the beginning and 217.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:41:52,780 INFO ]: RCFGBuilder took 1244.78 ms. Allocated memory was 306.7 MB in the beginning and 324.0 MB in the end (delta: 17.3 MB). Free memory was 217.2 MB in the beginning and 252.1 MB in the end (delta: -34.9 MB). Peak memory consumption was 37.3 MB. Max. memory is 3.6 GB. [2018-06-24 20:41:52,781 INFO ]: BlockEncodingV2 took 1589.61 ms. Allocated memory was 324.0 MB in the beginning and 359.7 MB in the end (delta: 35.7 MB). Free memory was 252.1 MB in the beginning and 260.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 79.1 MB. Max. memory is 3.6 GB. [2018-06-24 20:41:52,781 INFO ]: TraceAbstraction took 1639.34 ms. Allocated memory is still 359.7 MB. Free memory was 260.8 MB in the beginning and 196.7 MB in the end (delta: 64.1 MB). Peak memory consumption was 64.1 MB. Max. memory is 3.6 GB. [2018-06-24 20:41:52,784 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 58 locations, 68 edges - StatisticsResult: Encoded RCFG 10 locations, 20 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 306.7 MB. Free memory is still 269.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 100.53 ms. Allocated memory is still 306.7 MB. Free memory was 223.2 MB in the beginning and 219.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 78.52 ms. Allocated memory is still 306.7 MB. Free memory was 219.2 MB in the beginning and 217.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 1244.78 ms. Allocated memory was 306.7 MB in the beginning and 324.0 MB in the end (delta: 17.3 MB). Free memory was 217.2 MB in the beginning and 252.1 MB in the end (delta: -34.9 MB). Peak memory consumption was 37.3 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 1589.61 ms. Allocated memory was 324.0 MB in the beginning and 359.7 MB in the end (delta: 35.7 MB). Free memory was 252.1 MB in the beginning and 260.8 MB in the end (delta: -8.7 MB). Peak memory consumption was 79.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1639.34 ms. Allocated memory is still 359.7 MB. Free memory was 260.8 MB in the beginning and 196.7 MB in the end (delta: 64.1 MB). Peak memory consumption was 64.1 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, 10 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 65 SDslu, 74 SDs, 0 SdLazy, 40 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 299 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 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/26.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-41-52-796.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/26.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-41-52-796.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/26.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-41-52-796.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/26.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-41-52-796.csv Received shutdown request...