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/sally-chc-benchmarks/misc/inc_cas_prop1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 22:22:13,085 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 22:22:13,087 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 22:22:13,099 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 22:22:13,100 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 22:22:13,100 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 22:22:13,103 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 22:22:13,105 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 22:22:13,107 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 22:22:13,107 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 22:22:13,109 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 22:22:13,109 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 22:22:13,110 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 22:22:13,111 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 22:22:13,114 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 22:22:13,114 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 22:22:13,116 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 22:22:13,125 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 22:22:13,126 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 22:22:13,127 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 22:22:13,128 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 22:22:13,133 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 22:22:13,134 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 22:22:13,134 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 22:22:13,135 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 22:22:13,136 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 22:22:13,137 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 22:22:13,138 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 22:22:13,139 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 22:22:13,139 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 22:22:13,140 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 22:22:13,140 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 22:22:13,140 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 22:22:13,146 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 22:22:13,146 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 22:22:13,146 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 22:22:13,167 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 22:22:13,167 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 22:22:13,168 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 22:22:13,168 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 22:22:13,169 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 22:22:13,169 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 22:22:13,169 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 22:22:13,169 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 22:22:13,171 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 22:22:13,171 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 22:22:13,171 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 22:22:13,171 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 22:22:13,171 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 22:22:13,172 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 22:22:13,172 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 22:22:13,172 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 22:22:13,172 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 22:22:13,172 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 22:22:13,172 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 22:22:13,173 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 22:22:13,173 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 22:22:13,177 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 22:22:13,178 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 22:22:13,238 INFO ]: Repository-Root is: /tmp [2018-06-24 22:22:13,259 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 22:22:13,265 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 22:22:13,266 INFO ]: Initializing SmtParser... [2018-06-24 22:22:13,266 INFO ]: SmtParser initialized [2018-06-24 22:22:13,267 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/sally-chc-benchmarks/misc/inc_cas_prop1.smt2 [2018-06-24 22:22:13,269 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 22:22:13,357 INFO ]: Executing SMT file /storage/chc-comp/sally-chc-benchmarks/misc/inc_cas_prop1.smt2 unknown [2018-06-24 22:22:13,533 INFO ]: Succesfully executed SMT file /storage/chc-comp/sally-chc-benchmarks/misc/inc_cas_prop1.smt2 [2018-06-24 22:22:13,537 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 22:22:13,543 INFO ]: Walking toolchain with 5 elements. [2018-06-24 22:22:13,544 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 22:22:13,544 INFO ]: Initializing ChcToBoogie... [2018-06-24 22:22:13,544 INFO ]: ChcToBoogie initialized [2018-06-24 22:22:13,547 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 10:22:13" (1/1) ... [2018-06-24 22:22:13,605 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:22:13 Unit [2018-06-24 22:22:13,605 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 22:22:13,605 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 22:22:13,605 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 22:22:13,605 INFO ]: Boogie Preprocessor initialized [2018-06-24 22:22:13,626 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:22:13" (1/1) ... [2018-06-24 22:22:13,627 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:22:13" (1/1) ... [2018-06-24 22:22:13,633 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:22:13" (1/1) ... [2018-06-24 22:22:13,633 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:22:13" (1/1) ... [2018-06-24 22:22:13,635 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:22:13" (1/1) ... [2018-06-24 22:22:13,638 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:22:13" (1/1) ... [2018-06-24 22:22:13,639 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:22:13" (1/1) ... [2018-06-24 22:22:13,640 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 22:22:13,640 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 22:22:13,640 INFO ]: Initializing RCFGBuilder... [2018-06-24 22:22:13,641 INFO ]: RCFGBuilder initialized [2018-06-24 22:22:13,643 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:22:13" (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) [2018-06-24 22:22:13,657 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 22:22:13,657 INFO ]: Found specification of procedure gotoProc [2018-06-24 22:22:13,657 INFO ]: Found implementation of procedure gotoProc [2018-06-24 22:22:13,657 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 22:22:13,657 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 22:22:13,657 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 22:22:13,821 INFO ]: Using library mode [2018-06-24 22:22:13,821 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 10:22:13 BoogieIcfgContainer [2018-06-24 22:22:13,821 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 22:22:13,822 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 22:22:13,822 INFO ]: Initializing BlockEncodingV2... [2018-06-24 22:22:13,823 INFO ]: BlockEncodingV2 initialized [2018-06-24 22:22:13,823 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 10:22:13" (1/1) ... [2018-06-24 22:22:13,837 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-24 22:22:13,838 INFO ]: Using Remove infeasible edges [2018-06-24 22:22:13,839 INFO ]: Using Maximize final states [2018-06-24 22:22:13,839 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 22:22:13,840 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 22:22:13,843 INFO ]: Using Remove sink states [2018-06-24 22:22:13,844 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 22:22:13,844 INFO ]: Using Use SBE [2018-06-24 22:22:13,912 INFO ]: SBE split 2 edges [2018-06-24 22:22:13,918 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 22:22:13,922 INFO ]: 0 new accepting states [2018-06-24 22:22:14,010 INFO ]: Removed 6 edges and 2 locations by large block encoding [2018-06-24 22:22:14,011 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 22:22:14,013 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 22:22:14,013 INFO ]: 0 new accepting states [2018-06-24 22:22:14,013 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 22:22:14,013 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 22:22:14,014 INFO ]: Encoded RCFG 6 locations, 39 edges [2018-06-24 22:22:14,014 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 10:22:14 BasicIcfg [2018-06-24 22:22:14,014 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 22:22:14,015 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 22:22:14,015 INFO ]: Initializing TraceAbstraction... [2018-06-24 22:22:14,021 INFO ]: TraceAbstraction initialized [2018-06-24 22:22:14,021 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 10:22:13" (1/4) ... [2018-06-24 22:22:14,022 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd23b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 10:22:14, skipping insertion in model container [2018-06-24 22:22:14,022 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 10:22:13" (2/4) ... [2018-06-24 22:22:14,022 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd23b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 10:22:14, skipping insertion in model container [2018-06-24 22:22:14,022 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 10:22:13" (3/4) ... [2018-06-24 22:22:14,023 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd23b4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 10:22:14, skipping insertion in model container [2018-06-24 22:22:14,027 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 10:22:14" (4/4) ... [2018-06-24 22:22:14,028 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 22:22:14,037 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 22:22:14,044 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 22:22:14,099 INFO ]: Using default assertion order modulation [2018-06-24 22:22:14,099 INFO ]: Interprodecural is true [2018-06-24 22:22:14,099 INFO ]: Hoare is false [2018-06-24 22:22:14,099 INFO ]: Compute interpolants for FPandBP [2018-06-24 22:22:14,100 INFO ]: Backedges is TWOTRACK [2018-06-24 22:22:14,100 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 22:22:14,100 INFO ]: Difference is false [2018-06-24 22:22:14,100 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 22:22:14,100 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 22:22:14,110 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 22:22:14,124 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 22:22:14,124 INFO ]: Found error trace [2018-06-24 22:22:14,127 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 22:22:14,127 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 22:22:14,136 INFO ]: Analyzing trace with hash 36480804, now seen corresponding path program 1 times [2018-06-24 22:22:14,138 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 22:22:14,138 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 22:22:14,171 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:14,171 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:14,171 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:14,209 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:14,261 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:22:14,262 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 22:22:14,262 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 22:22:14,264 INFO ]: Interpolant automaton has 3 states [2018-06-24 22:22:14,274 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 22:22:14,274 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 22:22:14,276 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 22:22:14,903 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 22:22:14,904 INFO ]: Finished difference Result 7 states and 55 transitions. [2018-06-24 22:22:14,904 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 22:22:14,905 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 22:22:14,905 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 22:22:14,914 INFO ]: With dead ends: 7 [2018-06-24 22:22:14,914 INFO ]: Without dead ends: 7 [2018-06-24 22:22:14,916 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 [2018-06-24 22:22:14,932 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 22:22:14,949 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 22:22:14,950 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 22:22:14,951 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 55 transitions. [2018-06-24 22:22:14,952 INFO ]: Start accepts. Automaton has 7 states and 55 transitions. Word has length 5 [2018-06-24 22:22:14,953 INFO ]: Finished accepts. word is rejected. [2018-06-24 22:22:14,953 INFO ]: Abstraction has 7 states and 55 transitions. [2018-06-24 22:22:14,953 INFO ]: Interpolant automaton has 3 states. [2018-06-24 22:22:14,953 INFO ]: Start isEmpty. Operand 7 states and 55 transitions. [2018-06-24 22:22:14,953 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 22:22:14,953 INFO ]: Found error trace [2018-06-24 22:22:14,953 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 22:22:14,954 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 22:22:14,954 INFO ]: Analyzing trace with hash 36540386, now seen corresponding path program 1 times [2018-06-24 22:22:14,954 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 22:22:14,954 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 22:22:14,955 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:14,955 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:14,955 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:14,962 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:15,018 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:22:15,018 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 22:22:15,018 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 22:22:15,019 INFO ]: Interpolant automaton has 3 states [2018-06-24 22:22:15,020 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 22:22:15,020 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 22:22:15,020 INFO ]: Start difference. First operand 7 states and 55 transitions. Second operand 3 states. [2018-06-24 22:22:15,420 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 22:22:15,420 INFO ]: Finished difference Result 9 states and 79 transitions. [2018-06-24 22:22:15,420 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 22:22:15,420 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 22:22:15,420 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 22:22:15,421 INFO ]: With dead ends: 9 [2018-06-24 22:22:15,421 INFO ]: Without dead ends: 9 [2018-06-24 22:22:15,422 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 [2018-06-24 22:22:15,422 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-24 22:22:15,424 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-24 22:22:15,424 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 22:22:15,425 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 79 transitions. [2018-06-24 22:22:15,425 INFO ]: Start accepts. Automaton has 9 states and 79 transitions. Word has length 5 [2018-06-24 22:22:15,425 INFO ]: Finished accepts. word is rejected. [2018-06-24 22:22:15,425 INFO ]: Abstraction has 9 states and 79 transitions. [2018-06-24 22:22:15,425 INFO ]: Interpolant automaton has 3 states. [2018-06-24 22:22:15,425 INFO ]: Start isEmpty. Operand 9 states and 79 transitions. [2018-06-24 22:22:15,425 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 22:22:15,425 INFO ]: Found error trace [2018-06-24 22:22:15,425 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 22:22:15,425 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 22:22:15,425 INFO ]: Analyzing trace with hash 1130585070, now seen corresponding path program 1 times [2018-06-24 22:22:15,426 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 22:22:15,426 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 22:22:15,426 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:15,427 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:15,427 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:15,446 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:15,473 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:22:15,473 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 22:22:15,473 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 22:22:15,473 INFO ]: Interpolant automaton has 3 states [2018-06-24 22:22:15,473 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 22:22:15,473 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 22:22:15,474 INFO ]: Start difference. First operand 9 states and 79 transitions. Second operand 3 states. [2018-06-24 22:22:16,140 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 22:22:16,140 INFO ]: Finished difference Result 13 states and 151 transitions. [2018-06-24 22:22:16,140 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 22:22:16,140 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 22:22:16,140 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 22:22:16,141 INFO ]: With dead ends: 13 [2018-06-24 22:22:16,141 INFO ]: Without dead ends: 13 [2018-06-24 22:22:16,142 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 [2018-06-24 22:22:16,142 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-24 22:22:16,144 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-06-24 22:22:16,145 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 22:22:16,145 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2018-06-24 22:22:16,146 INFO ]: Start accepts. Automaton has 11 states and 127 transitions. Word has length 6 [2018-06-24 22:22:16,146 INFO ]: Finished accepts. word is rejected. [2018-06-24 22:22:16,146 INFO ]: Abstraction has 11 states and 127 transitions. [2018-06-24 22:22:16,146 INFO ]: Interpolant automaton has 3 states. [2018-06-24 22:22:16,146 INFO ]: Start isEmpty. Operand 11 states and 127 transitions. [2018-06-24 22:22:16,146 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 22:22:16,146 INFO ]: Found error trace [2018-06-24 22:22:16,146 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 22:22:16,146 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 22:22:16,146 INFO ]: Analyzing trace with hash 1131836292, now seen corresponding path program 1 times [2018-06-24 22:22:16,146 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 22:22:16,147 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 22:22:16,147 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:16,147 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:16,147 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:16,157 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:16,222 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:22:16,222 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 22:22:16,222 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 22:22:16,223 INFO ]: Interpolant automaton has 3 states [2018-06-24 22:22:16,223 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 22:22:16,223 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 22:22:16,223 INFO ]: Start difference. First operand 11 states and 127 transitions. Second operand 3 states. [2018-06-24 22:22:16,513 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 22:22:16,513 INFO ]: Finished difference Result 17 states and 202 transitions. [2018-06-24 22:22:16,513 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 22:22:16,513 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-24 22:22:16,513 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 22:22:16,514 INFO ]: With dead ends: 17 [2018-06-24 22:22:16,514 INFO ]: Without dead ends: 17 [2018-06-24 22:22:16,514 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 [2018-06-24 22:22:16,515 INFO ]: Start minimizeSevpa. Operand 17 states. [2018-06-24 22:22:16,520 INFO ]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-06-24 22:22:16,520 INFO ]: Start removeUnreachable. Operand 17 states. [2018-06-24 22:22:16,521 INFO ]: Finished removeUnreachable. Reduced from 17 states to 17 states and 202 transitions. [2018-06-24 22:22:16,521 INFO ]: Start accepts. Automaton has 17 states and 202 transitions. Word has length 6 [2018-06-24 22:22:16,521 INFO ]: Finished accepts. word is rejected. [2018-06-24 22:22:16,521 INFO ]: Abstraction has 17 states and 202 transitions. [2018-06-24 22:22:16,521 INFO ]: Interpolant automaton has 3 states. [2018-06-24 22:22:16,521 INFO ]: Start isEmpty. Operand 17 states and 202 transitions. [2018-06-24 22:22:16,522 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 22:22:16,522 INFO ]: Found error trace [2018-06-24 22:22:16,522 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 22:22:16,522 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 22:22:16,522 INFO ]: Analyzing trace with hash 688168321, now seen corresponding path program 1 times [2018-06-24 22:22:16,522 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 22:22:16,522 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 22:22:16,522 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:16,522 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:16,523 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:16,538 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:16,588 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:22:16,588 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 22:22:16,588 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 [2018-06-24 22:22:16,595 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:16,634 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:16,641 INFO ]: Computing forward predicates... [2018-06-24 22:22:16,668 INFO ]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:22:16,688 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 22:22:16,688 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-24 22:22:16,689 INFO ]: Interpolant automaton has 6 states [2018-06-24 22:22:16,689 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 22:22:16,689 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 22:22:16,689 INFO ]: Start difference. First operand 17 states and 202 transitions. Second operand 6 states. [2018-06-24 22:22:17,220 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 22:22:17,220 INFO ]: Finished difference Result 43 states and 585 transitions. [2018-06-24 22:22:17,220 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 22:22:17,220 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-24 22:22:17,220 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 22:22:17,222 INFO ]: With dead ends: 43 [2018-06-24 22:22:17,222 INFO ]: Without dead ends: 43 [2018-06-24 22:22:17,223 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-24 22:22:17,223 INFO ]: Start minimizeSevpa. Operand 43 states. [2018-06-24 22:22:17,231 INFO ]: Finished minimizeSevpa. Reduced states from 43 to 37. [2018-06-24 22:22:17,231 INFO ]: Start removeUnreachable. Operand 37 states. [2018-06-24 22:22:17,233 INFO ]: Finished removeUnreachable. Reduced from 37 states to 37 states and 514 transitions. [2018-06-24 22:22:17,233 INFO ]: Start accepts. Automaton has 37 states and 514 transitions. Word has length 7 [2018-06-24 22:22:17,233 INFO ]: Finished accepts. word is rejected. [2018-06-24 22:22:17,233 INFO ]: Abstraction has 37 states and 514 transitions. [2018-06-24 22:22:17,233 INFO ]: Interpolant automaton has 6 states. [2018-06-24 22:22:17,233 INFO ]: Start isEmpty. Operand 37 states and 514 transitions. [2018-06-24 22:22:17,234 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 22:22:17,234 INFO ]: Found error trace [2018-06-24 22:22:17,234 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 22:22:17,235 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 22:22:17,235 INFO ]: Analyzing trace with hash 726181637, now seen corresponding path program 1 times [2018-06-24 22:22:17,235 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 22:22:17,235 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 22:22:17,236 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:17,236 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:17,236 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:17,247 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:17,286 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:22:17,286 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 22:22:17,286 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 22:22:17,296 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:17,320 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:17,322 INFO ]: Computing forward predicates... [2018-06-24 22:22:17,344 INFO ]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:22:17,365 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 22:22:17,365 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-24 22:22:17,366 INFO ]: Interpolant automaton has 6 states [2018-06-24 22:22:17,366 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 22:22:17,366 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-24 22:22:17,366 INFO ]: Start difference. First operand 37 states and 514 transitions. Second operand 6 states. [2018-06-24 22:22:18,348 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 22:22:18,348 INFO ]: Finished difference Result 61 states and 855 transitions. [2018-06-24 22:22:18,348 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-24 22:22:18,348 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-24 22:22:18,348 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 22:22:18,350 INFO ]: With dead ends: 61 [2018-06-24 22:22:18,351 INFO ]: Without dead ends: 61 [2018-06-24 22:22:18,351 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-24 22:22:18,351 INFO ]: Start minimizeSevpa. Operand 61 states. [2018-06-24 22:22:18,373 INFO ]: Finished minimizeSevpa. Reduced states from 61 to 54. [2018-06-24 22:22:18,373 INFO ]: Start removeUnreachable. Operand 54 states. [2018-06-24 22:22:18,375 INFO ]: Finished removeUnreachable. Reduced from 54 states to 54 states and 731 transitions. [2018-06-24 22:22:18,376 INFO ]: Start accepts. Automaton has 54 states and 731 transitions. Word has length 7 [2018-06-24 22:22:18,376 INFO ]: Finished accepts. word is rejected. [2018-06-24 22:22:18,376 INFO ]: Abstraction has 54 states and 731 transitions. [2018-06-24 22:22:18,376 INFO ]: Interpolant automaton has 6 states. [2018-06-24 22:22:18,376 INFO ]: Start isEmpty. Operand 54 states and 731 transitions. [2018-06-24 22:22:18,377 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 22:22:18,377 INFO ]: Found error trace [2018-06-24 22:22:18,377 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 22:22:18,377 INFO ]: === Iteration 7 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 22:22:18,378 INFO ]: Analyzing trace with hash -410889554, now seen corresponding path program 1 times [2018-06-24 22:22:18,378 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 22:22:18,378 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 22:22:18,378 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:18,378 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:18,378 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:18,398 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:18,430 INFO ]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-06-24 22:22:18,430 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 22:22:18,430 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 22:22:18,430 INFO ]: Interpolant automaton has 3 states [2018-06-24 22:22:18,430 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 22:22:18,430 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 22:22:18,430 INFO ]: Start difference. First operand 54 states and 731 transitions. Second operand 3 states. [2018-06-24 22:22:18,509 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 22:22:18,509 INFO ]: Finished difference Result 54 states and 495 transitions. [2018-06-24 22:22:18,509 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 22:22:18,509 INFO ]: Start accepts. Automaton has 3 states. Word has length 9 [2018-06-24 22:22:18,509 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 22:22:18,511 INFO ]: With dead ends: 54 [2018-06-24 22:22:18,511 INFO ]: Without dead ends: 54 [2018-06-24 22:22:18,511 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 [2018-06-24 22:22:18,511 INFO ]: Start minimizeSevpa. Operand 54 states. [2018-06-24 22:22:18,518 INFO ]: Finished minimizeSevpa. Reduced states from 54 to 54. [2018-06-24 22:22:18,518 INFO ]: Start removeUnreachable. Operand 54 states. [2018-06-24 22:22:18,519 INFO ]: Finished removeUnreachable. Reduced from 54 states to 54 states and 495 transitions. [2018-06-24 22:22:18,519 INFO ]: Start accepts. Automaton has 54 states and 495 transitions. Word has length 9 [2018-06-24 22:22:18,520 INFO ]: Finished accepts. word is rejected. [2018-06-24 22:22:18,520 INFO ]: Abstraction has 54 states and 495 transitions. [2018-06-24 22:22:18,520 INFO ]: Interpolant automaton has 3 states. [2018-06-24 22:22:18,520 INFO ]: Start isEmpty. Operand 54 states and 495 transitions. [2018-06-24 22:22:18,520 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 22:22:18,520 INFO ]: Found error trace [2018-06-24 22:22:18,520 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 22:22:18,520 INFO ]: === Iteration 8 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 22:22:18,520 INFO ]: Analyzing trace with hash -157984363, now seen corresponding path program 1 times [2018-06-24 22:22:18,520 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 22:22:18,520 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 22:22:18,521 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:18,521 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:18,521 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:18,533 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:18,586 INFO ]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:22:18,586 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 22:22:18,586 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 22:22:18,592 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:18,631 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:18,634 INFO ]: Computing forward predicates... [2018-06-24 22:22:18,691 INFO ]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:22:18,711 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 22:22:18,711 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-06-24 22:22:18,711 INFO ]: Interpolant automaton has 8 states [2018-06-24 22:22:18,711 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 22:22:18,711 INFO ]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-06-24 22:22:18,711 INFO ]: Start difference. First operand 54 states and 495 transitions. Second operand 8 states. [2018-06-24 22:22:19,442 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 22:22:19,442 INFO ]: Finished difference Result 92 states and 883 transitions. [2018-06-24 22:22:19,442 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-24 22:22:19,442 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-24 22:22:19,443 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 22:22:19,447 INFO ]: With dead ends: 92 [2018-06-24 22:22:19,447 INFO ]: Without dead ends: 34 [2018-06-24 22:22:19,447 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-06-24 22:22:19,447 INFO ]: Start minimizeSevpa. Operand 34 states. [2018-06-24 22:22:19,451 INFO ]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-06-24 22:22:19,451 INFO ]: Start removeUnreachable. Operand 34 states. [2018-06-24 22:22:19,452 INFO ]: Finished removeUnreachable. Reduced from 34 states to 34 states and 277 transitions. [2018-06-24 22:22:19,452 INFO ]: Start accepts. Automaton has 34 states and 277 transitions. Word has length 9 [2018-06-24 22:22:19,452 INFO ]: Finished accepts. word is rejected. [2018-06-24 22:22:19,452 INFO ]: Abstraction has 34 states and 277 transitions. [2018-06-24 22:22:19,452 INFO ]: Interpolant automaton has 8 states. [2018-06-24 22:22:19,452 INFO ]: Start isEmpty. Operand 34 states and 277 transitions. [2018-06-24 22:22:19,452 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 22:22:19,452 INFO ]: Found error trace [2018-06-24 22:22:19,452 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-06-24 22:22:19,452 INFO ]: === Iteration 9 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 22:22:19,453 INFO ]: Analyzing trace with hash -1337595843, now seen corresponding path program 1 times [2018-06-24 22:22:19,453 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 22:22:19,453 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 22:22:19,453 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:19,453 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:19,453 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 22:22:19,465 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:19,521 INFO ]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:22:19,522 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 22:22:19,522 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 22:22:19,536 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 22:22:19,576 INFO ]: Conjunction of SSA is unsat [2018-06-24 22:22:19,578 INFO ]: Computing forward predicates... [2018-06-24 22:22:19,592 INFO ]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 22:22:19,611 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 22:22:19,611 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2018-06-24 22:22:19,611 INFO ]: Interpolant automaton has 8 states [2018-06-24 22:22:19,612 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-24 22:22:19,612 INFO ]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-06-24 22:22:19,612 INFO ]: Start difference. First operand 34 states and 277 transitions. Second operand 8 states. [2018-06-24 22:22:20,204 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 22:22:20,204 INFO ]: Finished difference Result 57 states and 532 transitions. [2018-06-24 22:22:20,218 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 22:22:20,218 INFO ]: Start accepts. Automaton has 8 states. Word has length 9 [2018-06-24 22:22:20,219 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 22:22:20,219 INFO ]: With dead ends: 57 [2018-06-24 22:22:20,219 INFO ]: Without dead ends: 0 [2018-06-24 22:22:20,219 INFO ]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-06-24 22:22:20,219 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 22:22:20,219 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 22:22:20,219 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 22:22:20,219 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 22:22:20,219 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-24 22:22:20,219 INFO ]: Finished accepts. word is rejected. [2018-06-24 22:22:20,219 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 22:22:20,219 INFO ]: Interpolant automaton has 8 states. [2018-06-24 22:22:20,219 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 22:22:20,219 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 22:22:20,222 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 22:22:20,223 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 10:22:20 BasicIcfg [2018-06-24 22:22:20,223 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 22:22:20,224 INFO ]: Toolchain (without parser) took 6686.81 ms. Allocated memory was 309.3 MB in the beginning and 361.8 MB in the end (delta: 52.4 MB). Free memory was 264.7 MB in the beginning and 217.0 MB in the end (delta: 47.7 MB). Peak memory consumption was 100.2 MB. Max. memory is 3.6 GB. [2018-06-24 22:22:20,226 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 309.3 MB. Free memory is still 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 22:22:20,226 INFO ]: ChcToBoogie took 61.34 ms. Allocated memory is still 309.3 MB. Free memory was 264.7 MB in the beginning and 262.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 22:22:20,227 INFO ]: Boogie Preprocessor took 34.66 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 261.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 22:22:20,228 INFO ]: RCFGBuilder took 180.77 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 252.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. [2018-06-24 22:22:20,228 INFO ]: BlockEncodingV2 took 192.68 ms. Allocated memory is still 309.3 MB. Free memory was 252.7 MB in the beginning and 245.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. [2018-06-24 22:22:20,229 INFO ]: TraceAbstraction took 6208.12 ms. Allocated memory was 309.3 MB in the beginning and 361.8 MB in the end (delta: 52.4 MB). Free memory was 245.8 MB in the beginning and 217.0 MB in the end (delta: 28.8 MB). Peak memory consumption was 81.2 MB. Max. memory is 3.6 GB. [2018-06-24 22:22:20,233 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 10 locations, 10 edges - StatisticsResult: Encoded RCFG 6 locations, 39 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 274.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 61.34 ms. Allocated memory is still 309.3 MB. Free memory was 264.7 MB in the beginning and 262.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.66 ms. Allocated memory is still 309.3 MB. Free memory was 262.7 MB in the beginning and 261.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 180.77 ms. Allocated memory is still 309.3 MB. Free memory was 260.7 MB in the beginning and 252.7 MB in the end (delta: 8.0 MB). Peak memory consumption was 8.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 192.68 ms. Allocated memory is still 309.3 MB. Free memory was 252.7 MB in the beginning and 245.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 6208.12 ms. Allocated memory was 309.3 MB in the beginning and 361.8 MB in the end (delta: 52.4 MB). Free memory was 245.8 MB in the beginning and 217.0 MB in the end (delta: 28.8 MB). Peak memory consumption was 81.2 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, 6 locations, 1 error locations. SAFE Result, 6.1s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 4.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 1 SDslu, 55 SDs, 0 SdLazy, 2109 SolverSat, 617 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=6, 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, 9 MinimizatonAttempts, 15 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 1250 SizeOfPredicates, 4 NumberOfNonLiveVariables, 688 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 22/64 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/inc_cas_prop1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_22-22-20-245.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inc_cas_prop1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_22-22-20-245.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inc_cas_prop1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_22-22-20-245.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/inc_cas_prop1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_22-22-20-245.csv Received shutdown request...