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/27.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:43:19,713 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:43:19,715 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:43:19,729 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:43:19,729 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:43:19,730 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:43:19,731 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:43:19,738 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:43:19,740 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:43:19,742 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:43:19,743 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:43:19,744 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:43:19,744 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:43:19,745 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:43:19,750 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:43:19,750 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:43:19,751 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:43:19,764 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:43:19,766 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:43:19,767 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:43:19,768 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:43:19,769 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:43:19,771 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:43:19,772 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:43:19,772 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:43:19,773 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:43:19,773 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:43:19,774 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:43:19,775 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:43:19,776 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:43:19,776 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:43:19,777 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:43:19,777 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:43:19,777 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:43:19,778 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:43:19,778 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:43:19,779 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:43:19,791 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:43:19,792 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:43:19,792 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:43:19,792 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:43:19,793 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:43:19,793 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:43:19,793 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:43:19,793 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:43:19,794 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:43:19,794 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:43:19,794 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:43:19,794 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:43:19,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:43:19,795 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:43:19,795 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:43:19,795 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:43:19,795 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:43:19,795 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:43:19,796 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:43:19,796 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:43:19,796 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:43:19,798 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:43:19,799 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:43:19,843 INFO ]: Repository-Root is: /tmp [2018-06-26 17:43:19,860 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:43:19,866 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:43:19,867 INFO ]: Initializing SmtParser... [2018-06-26 17:43:19,868 INFO ]: SmtParser initialized [2018-06-26 17:43:19,868 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/27.c.smt2 [2018-06-26 17:43:19,869 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 [2018-06-26 17:43:19,960 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/27.c.smt2 unknown [2018-06-26 17:43:20,461 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/27.c.smt2 [2018-06-26 17:43:20,465 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:43:20,471 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:43:20,472 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:43:20,472 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:43:20,472 INFO ]: ChcToBoogie initialized [2018-06-26 17:43:20,475 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:43:20" (1/1) ... [2018-06-26 17:43:20,543 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:20 Unit [2018-06-26 17:43:20,543 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:43:20,544 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:43:20,544 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:43:20,544 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:43:20,564 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:20" (1/1) ... [2018-06-26 17:43:20,564 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:20" (1/1) ... [2018-06-26 17:43:20,573 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:20" (1/1) ... [2018-06-26 17:43:20,573 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:20" (1/1) ... [2018-06-26 17:43:20,586 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:20" (1/1) ... [2018-06-26 17:43:20,588 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:20" (1/1) ... [2018-06-26 17:43:20,598 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:20" (1/1) ... [2018-06-26 17:43:20,601 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:43:20,602 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:43:20,602 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:43:20,602 INFO ]: RCFGBuilder initialized [2018-06-26 17:43:20,603 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:20" (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 [2018-06-26 17:43:20,622 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:43:20,622 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:43:20,622 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:43:20,622 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:43:20,622 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:43:20,622 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 17:43:21,176 INFO ]: Using library mode [2018-06-26 17:43:21,177 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:43:21 BoogieIcfgContainer [2018-06-26 17:43:21,177 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:43:21,177 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:43:21,178 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:43:21,179 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:43:21,179 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:43:21" (1/1) ... [2018-06-26 17:43:21,201 INFO ]: Initial Icfg 42 locations, 44 edges [2018-06-26 17:43:21,202 INFO ]: Using Remove infeasible edges [2018-06-26 17:43:21,204 INFO ]: Using Maximize final states [2018-06-26 17:43:21,204 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:43:21,204 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:43:21,206 INFO ]: Using Remove sink states [2018-06-26 17:43:21,209 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:43:21,209 INFO ]: Using Use SBE [2018-06-26 17:43:21,219 INFO ]: SBE split 0 edges [2018-06-26 17:43:21,225 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:43:21,227 INFO ]: 0 new accepting states [2018-06-26 17:43:22,535 INFO ]: Removed 90 edges and 33 locations by large block encoding [2018-06-26 17:43:22,537 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:43:22,541 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:43:22,541 INFO ]: 0 new accepting states [2018-06-26 17:43:22,541 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:43:22,542 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:43:22,542 INFO ]: Encoded RCFG 7 locations, 11 edges [2018-06-26 17:43:22,542 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:43:22 BasicIcfg [2018-06-26 17:43:22,542 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:43:22,543 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:43:22,543 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:43:22,547 INFO ]: TraceAbstraction initialized [2018-06-26 17:43:22,547 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:43:20" (1/4) ... [2018-06-26 17:43:22,548 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764ceebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:43:22, skipping insertion in model container [2018-06-26 17:43:22,548 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:43:20" (2/4) ... [2018-06-26 17:43:22,548 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764ceebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:43:22, skipping insertion in model container [2018-06-26 17:43:22,548 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:43:21" (3/4) ... [2018-06-26 17:43:22,548 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@764ceebd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:43:22, skipping insertion in model container [2018-06-26 17:43:22,549 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:43:22" (4/4) ... [2018-06-26 17:43:22,550 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:43:22,557 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:43:22,564 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:43:22,602 INFO ]: Using default assertion order modulation [2018-06-26 17:43:22,602 INFO ]: Interprodecural is true [2018-06-26 17:43:22,602 INFO ]: Hoare is false [2018-06-26 17:43:22,602 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:43:22,602 INFO ]: Backedges is TWOTRACK [2018-06-26 17:43:22,602 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:43:22,602 INFO ]: Difference is false [2018-06-26 17:43:22,602 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:43:22,603 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:43:22,611 INFO ]: Start isEmpty. Operand 7 states. [2018-06-26 17:43:22,621 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:43:22,621 INFO ]: Found error trace [2018-06-26 17:43:22,622 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:43:22,622 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:43:22,628 INFO ]: Analyzing trace with hash 36681780, now seen corresponding path program 1 times [2018-06-26 17:43:22,630 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:43:22,630 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:43:22,662 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:22,662 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:43:22,662 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:22,752 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:43:22,891 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:43:22,894 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:43:22,894 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:43:22,896 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:43:22,912 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:43:22,913 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:43:22,917 INFO ]: Start difference. First operand 7 states. Second operand 3 states. [2018-06-26 17:43:23,142 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:43:23,142 INFO ]: Finished difference Result 10 states and 17 transitions. [2018-06-26 17:43:23,142 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:43:23,144 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:43:23,144 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:43:23,157 INFO ]: With dead ends: 10 [2018-06-26 17:43:23,157 INFO ]: Without dead ends: 10 [2018-06-26 17:43:23,161 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 [2018-06-26 17:43:23,182 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-26 17:43:23,203 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 8. [2018-06-26 17:43:23,205 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 17:43:23,205 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 13 transitions. [2018-06-26 17:43:23,206 INFO ]: Start accepts. Automaton has 8 states and 13 transitions. Word has length 5 [2018-06-26 17:43:23,206 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:43:23,206 INFO ]: Abstraction has 8 states and 13 transitions. [2018-06-26 17:43:23,206 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:43:23,207 INFO ]: Start isEmpty. Operand 8 states and 13 transitions. [2018-06-26 17:43:23,207 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:43:23,207 INFO ]: Found error trace [2018-06-26 17:43:23,207 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:43:23,207 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:43:23,207 INFO ]: Analyzing trace with hash 1136060014, now seen corresponding path program 1 times [2018-06-26 17:43:23,207 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:43:23,207 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:43:23,208 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:23,208 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:43:23,208 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:23,248 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:43:23,405 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:43:23,405 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:43:23,405 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 17:43:23,407 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:43:23,407 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:43:23,407 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:43:23,407 INFO ]: Start difference. First operand 8 states and 13 transitions. Second operand 4 states. [2018-06-26 17:43:23,562 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:43:23,562 INFO ]: Finished difference Result 12 states and 22 transitions. [2018-06-26 17:43:23,563 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:43:23,563 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-26 17:43:23,563 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:43:23,564 INFO ]: With dead ends: 12 [2018-06-26 17:43:23,564 INFO ]: Without dead ends: 12 [2018-06-26 17:43:23,564 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 [2018-06-26 17:43:23,564 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-26 17:43:23,566 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-06-26 17:43:23,566 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 17:43:23,566 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 17 transitions. [2018-06-26 17:43:23,567 INFO ]: Start accepts. Automaton has 10 states and 17 transitions. Word has length 6 [2018-06-26 17:43:23,567 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:43:23,568 INFO ]: Abstraction has 10 states and 17 transitions. [2018-06-26 17:43:23,568 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:43:23,568 INFO ]: Start isEmpty. Operand 10 states and 17 transitions. [2018-06-26 17:43:23,568 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:43:23,568 INFO ]: Found error trace [2018-06-26 17:43:23,568 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:43:23,568 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:43:23,568 INFO ]: Analyzing trace with hash 887493302, now seen corresponding path program 1 times [2018-06-26 17:43:23,568 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:43:23,568 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:43:23,569 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:23,569 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:43:23,569 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:23,617 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:43:23,698 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:43:23,712 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:43:23,712 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:43:23,712 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:43:23,712 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:43:23,712 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:43:23,712 INFO ]: Start difference. First operand 10 states and 17 transitions. Second operand 3 states. [2018-06-26 17:43:23,770 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:43:23,770 INFO ]: Finished difference Result 12 states and 20 transitions. [2018-06-26 17:43:23,771 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:43:23,771 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-26 17:43:23,771 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:43:23,771 INFO ]: With dead ends: 12 [2018-06-26 17:43:23,771 INFO ]: Without dead ends: 12 [2018-06-26 17:43:23,772 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 [2018-06-26 17:43:23,772 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-26 17:43:23,773 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 10. [2018-06-26 17:43:23,773 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 17:43:23,774 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 16 transitions. [2018-06-26 17:43:23,774 INFO ]: Start accepts. Automaton has 10 states and 16 transitions. Word has length 7 [2018-06-26 17:43:23,774 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:43:23,774 INFO ]: Abstraction has 10 states and 16 transitions. [2018-06-26 17:43:23,774 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:43:23,774 INFO ]: Start isEmpty. Operand 10 states and 16 transitions. [2018-06-26 17:43:23,774 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:43:23,774 INFO ]: Found error trace [2018-06-26 17:43:23,774 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:43:23,774 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:43:23,775 INFO ]: Analyzing trace with hash 857969460, now seen corresponding path program 1 times [2018-06-26 17:43:23,775 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:43:23,775 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:43:23,775 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:23,775 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:43:23,775 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:43:23,800 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:43:23,921 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:43:23,921 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:43:23,921 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-06-26 17:43:23,921 INFO ]: Interpolant automaton has 5 states [2018-06-26 17:43:23,921 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 17:43:23,921 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:43:23,921 INFO ]: Start difference. First operand 10 states and 16 transitions. Second operand 5 states. [2018-06-26 17:43:23,987 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:43:23,987 INFO ]: Finished difference Result 6 states and 9 transitions. [2018-06-26 17:43:23,987 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:43:23,987 INFO ]: Start accepts. Automaton has 5 states. Word has length 7 [2018-06-26 17:43:23,987 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:43:23,987 INFO ]: With dead ends: 6 [2018-06-26 17:43:23,987 INFO ]: Without dead ends: 0 [2018-06-26 17:43:23,987 INFO ]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-26 17:43:23,988 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 17:43:23,988 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 17:43:23,988 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 17:43:23,988 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 17:43:23,988 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-06-26 17:43:23,988 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:43:23,988 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 17:43:23,988 INFO ]: Interpolant automaton has 5 states. [2018-06-26 17:43:23,988 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 17:43:23,988 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 17:43:23,990 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:43:23,991 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:43:23 BasicIcfg [2018-06-26 17:43:23,992 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:43:23,992 INFO ]: Toolchain (without parser) took 3526.73 ms. Allocated memory was 309.3 MB in the beginning and 375.4 MB in the end (delta: 66.1 MB). Free memory was 249.7 MB in the beginning and 293.8 MB in the end (delta: -44.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:43:23,994 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:43:23,994 INFO ]: ChcToBoogie took 71.56 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 245.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:43:23,994 INFO ]: Boogie Preprocessor took 57.66 ms. Allocated memory is still 309.3 MB. Free memory is still 245.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:43:23,995 INFO ]: RCFGBuilder took 575.12 ms. Allocated memory is still 309.3 MB. Free memory was 245.7 MB in the beginning and 215.7 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:43:23,995 INFO ]: BlockEncodingV2 took 1364.69 ms. Allocated memory was 309.3 MB in the beginning and 329.8 MB in the end (delta: 20.4 MB). Free memory was 215.7 MB in the beginning and 191.1 MB in the end (delta: 24.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 3.6 GB. [2018-06-26 17:43:23,995 INFO ]: TraceAbstraction took 1448.33 ms. Allocated memory was 329.8 MB in the beginning and 375.4 MB in the end (delta: 45.6 MB). Free memory was 191.1 MB in the beginning and 293.8 MB in the end (delta: -102.7 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:43:23,998 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 42 locations, 44 edges - StatisticsResult: Encoded RCFG 7 locations, 11 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 273.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 71.56 ms. Allocated memory is still 309.3 MB. Free memory was 249.7 MB in the beginning and 245.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 57.66 ms. Allocated memory is still 309.3 MB. Free memory is still 245.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * RCFGBuilder took 575.12 ms. Allocated memory is still 309.3 MB. Free memory was 245.7 MB in the beginning and 215.7 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 1364.69 ms. Allocated memory was 309.3 MB in the beginning and 329.8 MB in the end (delta: 20.4 MB). Free memory was 215.7 MB in the beginning and 191.1 MB in the end (delta: 24.7 MB). Peak memory consumption was 45.1 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1448.33 ms. Allocated memory was 329.8 MB in the beginning and 375.4 MB in the end (delta: 45.6 MB). Free memory was 191.1 MB in the beginning and 293.8 MB in the end (delta: -102.7 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, 7 locations, 1 error locations. SAFE Result, 1.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 11 SDslu, 27 SDs, 0 SdLazy, 40 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 4 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 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/27.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-43-24-015.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/27.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-43-24-015.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/27.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-43-24-015.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/27.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-43-24-015.csv Received shutdown request...