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/fourslot.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 19:20:10,800 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 19:20:10,804 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 19:20:10,818 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 19:20:10,818 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 19:20:10,819 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 19:20:10,820 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 19:20:10,826 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 19:20:10,828 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 19:20:10,828 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 19:20:10,831 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 19:20:10,831 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 19:20:10,832 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 19:20:10,833 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 19:20:10,834 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 19:20:10,836 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 19:20:10,837 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 19:20:10,839 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 19:20:10,852 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 19:20:10,853 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 19:20:10,854 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 19:20:10,855 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 19:20:10,857 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 19:20:10,857 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 19:20:10,857 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 19:20:10,858 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 19:20:10,864 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 19:20:10,865 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 19:20:10,865 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 19:20:10,866 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 19:20:10,866 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 19:20:10,867 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-06-26 19:20:10,874 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 19:20:10,896 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 19:20:10,896 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 19:20:10,896 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 19:20:10,896 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 19:20:10,898 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 19:20:10,899 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 19:20:10,899 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 19:20:10,899 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 19:20:10,899 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 19:20:10,899 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 19:20:10,900 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 19:20:10,900 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 19:20:10,900 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 19:20:10,900 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 19:20:10,900 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 19:20:10,901 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 19:20:10,901 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 19:20:10,901 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 19:20:10,901 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 19:20:10,901 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 19:20:10,902 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 19:20:10,903 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 19:20:10,904 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 19:20:10,950 INFO ]: Repository-Root is: /tmp [2018-06-26 19:20:10,966 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 19:20:10,970 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 19:20:10,971 INFO ]: Initializing SmtParser... [2018-06-26 19:20:10,971 INFO ]: SmtParser initialized [2018-06-26 19:20:10,972 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/sally-chc-benchmarks/misc/fourslot.smt2 [2018-06-26 19:20:10,973 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 19:20:11,063 INFO ]: Executing SMT file /storage/chc-comp/sally-chc-benchmarks/misc/fourslot.smt2 unknown [2018-06-26 19:20:11,356 INFO ]: Succesfully executed SMT file /storage/chc-comp/sally-chc-benchmarks/misc/fourslot.smt2 [2018-06-26 19:20:11,361 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 19:20:11,368 INFO ]: Walking toolchain with 5 elements. [2018-06-26 19:20:11,369 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 19:20:11,369 INFO ]: Initializing ChcToBoogie... [2018-06-26 19:20:11,369 INFO ]: ChcToBoogie initialized [2018-06-26 19:20:11,372 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 07:20:11" (1/1) ... [2018-06-26 19:20:11,439 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 07:20:11 Unit [2018-06-26 19:20:11,439 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 19:20:11,439 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 19:20:11,439 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 19:20:11,439 INFO ]: Boogie Preprocessor initialized [2018-06-26 19:20:11,462 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 07:20:11" (1/1) ... [2018-06-26 19:20:11,462 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 07:20:11" (1/1) ... [2018-06-26 19:20:11,467 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 07:20:11" (1/1) ... [2018-06-26 19:20:11,467 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 07:20:11" (1/1) ... [2018-06-26 19:20:11,473 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 07:20:11" (1/1) ... [2018-06-26 19:20:11,474 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 07:20:11" (1/1) ... [2018-06-26 19:20:11,476 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 07:20:11" (1/1) ... [2018-06-26 19:20:11,478 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 19:20:11,479 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 19:20:11,479 INFO ]: Initializing RCFGBuilder... [2018-06-26 19:20:11,479 INFO ]: RCFGBuilder initialized [2018-06-26 19:20:11,480 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 07:20:11" (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) [2018-06-26 19:20:11,489 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 19:20:11,489 INFO ]: Found specification of procedure gotoProc [2018-06-26 19:20:11,489 INFO ]: Found implementation of procedure gotoProc [2018-06-26 19:20:11,489 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 19:20:11,489 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 19:20:11,490 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 [2018-06-26 19:20:11,752 INFO ]: Using library mode [2018-06-26 19:20:11,753 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 07:20:11 BoogieIcfgContainer [2018-06-26 19:20:11,753 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 19:20:11,753 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 19:20:11,754 INFO ]: Initializing BlockEncodingV2... [2018-06-26 19:20:11,764 INFO ]: BlockEncodingV2 initialized [2018-06-26 19:20:11,764 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 07:20:11" (1/1) ... [2018-06-26 19:20:11,788 INFO ]: Initial Icfg 10 locations, 10 edges [2018-06-26 19:20:11,796 INFO ]: Using Remove infeasible edges [2018-06-26 19:20:11,797 INFO ]: Using Maximize final states [2018-06-26 19:20:11,797 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 19:20:11,797 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 19:20:11,799 INFO ]: Using Remove sink states [2018-06-26 19:20:11,800 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 19:20:11,800 INFO ]: Using Use SBE [2018-06-26 19:20:11,814 WARN ]: expecting exponential blowup for input size 10 [2018-06-26 19:20:11,921 WARN ]: expecting exponential blowup for input size 6 [2018-06-26 19:20:12,007 WARN ]: expecting exponential blowup for input size 6 [2018-06-26 19:20:12,062 WARN ]: expecting exponential blowup for input size 9 [2018-06-26 19:20:30,437 INFO ]: SBE split 2 edges [2018-06-26 19:20:31,675 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 19:20:31,678 INFO ]: 0 new accepting states [2018-06-26 19:20:32,670 INFO ]: Removed 67 edges and 2 locations by large block encoding [2018-06-26 19:20:32,673 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 19:20:34,732 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 19:20:34,734 INFO ]: 0 new accepting states [2018-06-26 19:20:34,739 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 19:20:34,740 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 19:20:36,442 INFO ]: Encoded RCFG 6 locations, 4593 edges [2018-06-26 19:20:36,442 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 07:20:36 BasicIcfg [2018-06-26 19:20:36,442 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 19:20:36,444 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 19:20:36,444 INFO ]: Initializing TraceAbstraction... [2018-06-26 19:20:36,447 INFO ]: TraceAbstraction initialized [2018-06-26 19:20:36,447 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 07:20:11" (1/4) ... [2018-06-26 19:20:36,449 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3531e57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 07:20:36, skipping insertion in model container [2018-06-26 19:20:36,449 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 07:20:11" (2/4) ... [2018-06-26 19:20:36,449 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3531e57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 07:20:36, skipping insertion in model container [2018-06-26 19:20:36,449 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 07:20:11" (3/4) ... [2018-06-26 19:20:36,449 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3531e57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 07:20:36, skipping insertion in model container [2018-06-26 19:20:36,449 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 07:20:36" (4/4) ... [2018-06-26 19:20:36,451 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 19:20:36,460 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 19:20:36,469 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 19:20:36,512 INFO ]: Using default assertion order modulation [2018-06-26 19:20:36,513 INFO ]: Interprodecural is true [2018-06-26 19:20:36,513 INFO ]: Hoare is false [2018-06-26 19:20:36,513 INFO ]: Compute interpolants for FPandBP [2018-06-26 19:20:36,513 INFO ]: Backedges is TWOTRACK [2018-06-26 19:20:36,513 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 19:20:36,513 INFO ]: Difference is false [2018-06-26 19:20:36,513 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 19:20:36,513 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 19:20:36,541 INFO ]: Start isEmpty. Operand 6 states. [2018-06-26 19:20:36,570 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 19:20:36,570 INFO ]: Found error trace [2018-06-26 19:20:36,571 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 19:20:36,571 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 19:20:36,576 INFO ]: Analyzing trace with hash 176852152, now seen corresponding path program 1 times [2018-06-26 19:20:36,578 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 19:20:36,578 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 19:20:36,623 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 19:20:36,624 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 19:20:36,624 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 19:20:36,663 INFO ]: Conjunction of SSA is unsat [2018-06-26 19:20:36,776 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 19:20:36,779 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 19:20:36,779 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 19:20:36,781 INFO ]: Interpolant automaton has 3 states [2018-06-26 19:20:36,795 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 19:20:36,795 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 19:20:36,799 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-26 19:20:53,251 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 19:20:53,251 INFO ]: Finished difference Result 7 states and 5921 transitions. [2018-06-26 19:20:53,252 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 19:20:53,253 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 19:20:53,253 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 19:20:53,283 INFO ]: With dead ends: 7 [2018-06-26 19:20:53,283 INFO ]: Without dead ends: 7 [2018-06-26 19:20:53,285 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 19:20:53,303 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-26 19:20:53,395 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-26 19:20:53,397 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 19:20:53,407 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 5921 transitions. [2018-06-26 19:20:53,409 INFO ]: Start accepts. Automaton has 7 states and 5921 transitions. Word has length 5 [2018-06-26 19:20:53,409 INFO ]: Finished accepts. word is rejected. [2018-06-26 19:20:53,409 INFO ]: Abstraction has 7 states and 5921 transitions. [2018-06-26 19:20:53,409 INFO ]: Interpolant automaton has 3 states. [2018-06-26 19:20:53,410 INFO ]: Start isEmpty. Operand 7 states and 5921 transitions. [2018-06-26 19:20:53,413 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 19:20:53,413 INFO ]: Found error trace [2018-06-26 19:20:53,413 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 19:20:53,413 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 19:20:53,413 INFO ]: Analyzing trace with hash 1175388064, now seen corresponding path program 1 times [2018-06-26 19:20:53,413 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 19:20:53,413 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 19:20:53,415 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 19:20:53,415 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 19:20:53,415 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 19:20:53,441 INFO ]: Conjunction of SSA is unsat [2018-06-26 19:20:53,515 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 19:20:53,515 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 19:20:53,515 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 19:20:53,516 INFO ]: Interpolant automaton has 3 states [2018-06-26 19:20:53,516 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 19:20:53,516 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 19:20:53,516 INFO ]: Start difference. First operand 7 states and 5921 transitions. Second operand 3 states. [2018-06-26 19:21:04,241 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 19:21:04,241 INFO ]: Finished difference Result 9 states and 8833 transitions. [2018-06-26 19:21:04,241 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 19:21:04,242 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 19:21:04,242 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 19:21:04,254 INFO ]: With dead ends: 9 [2018-06-26 19:21:04,254 INFO ]: Without dead ends: 9 [2018-06-26 19:21:04,255 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 19:21:04,255 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-26 19:21:04,315 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-26 19:21:04,315 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 19:21:04,329 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8833 transitions. [2018-06-26 19:21:04,329 INFO ]: Start accepts. Automaton has 9 states and 8833 transitions. Word has length 6 [2018-06-26 19:21:04,329 INFO ]: Finished accepts. word is rejected. [2018-06-26 19:21:04,329 INFO ]: Abstraction has 9 states and 8833 transitions. [2018-06-26 19:21:04,329 INFO ]: Interpolant automaton has 3 states. [2018-06-26 19:21:04,329 INFO ]: Start isEmpty. Operand 9 states and 8833 transitions. [2018-06-26 19:21:04,333 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 19:21:04,333 INFO ]: Found error trace [2018-06-26 19:21:04,334 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 19:21:04,334 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 19:21:04,334 INFO ]: Analyzing trace with hash 1144822498, now seen corresponding path program 1 times [2018-06-26 19:21:04,334 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 19:21:04,334 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 19:21:04,335 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 19:21:04,335 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 19:21:04,335 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 19:21:04,354 INFO ]: Conjunction of SSA is unsat [2018-06-26 19:21:04,417 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 19:21:04,417 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 19:21:04,417 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 19:21:04,418 INFO ]: Interpolant automaton has 3 states [2018-06-26 19:21:04,418 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 19:21:04,418 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 19:21:04,418 INFO ]: Start difference. First operand 9 states and 8833 transitions. Second operand 3 states. Received shutdown request... [2018-06-26 19:21:08,982 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 19:21:08,982 WARN ]: Verification canceled [2018-06-26 19:21:08,984 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 19:21:08,985 WARN ]: Timeout [2018-06-26 19:21:08,985 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 07:21:08 BasicIcfg [2018-06-26 19:21:08,985 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 19:21:08,986 INFO ]: Toolchain (without parser) took 57624.08 ms. Allocated memory was 304.1 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 257.6 MB in the beginning and 1.1 GB in the end (delta: -869.9 MB). Peak memory consumption was 1.0 GB. Max. memory is 3.6 GB. [2018-06-26 19:21:08,987 INFO ]: SmtParser took 0.04 ms. Allocated memory is still 304.1 MB. Free memory is still 269.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 19:21:08,988 INFO ]: ChcToBoogie took 70.36 ms. Allocated memory is still 304.1 MB. Free memory was 256.6 MB in the beginning and 254.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 19:21:08,989 INFO ]: Boogie Preprocessor took 38.93 ms. Allocated memory is still 304.1 MB. Free memory was 254.6 MB in the beginning and 253.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-26 19:21:08,989 INFO ]: RCFGBuilder took 274.29 ms. Allocated memory is still 304.1 MB. Free memory was 252.6 MB in the beginning and 240.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-26 19:21:08,990 INFO ]: BlockEncodingV2 took 24688.63 ms. Allocated memory was 304.1 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 240.6 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 3.6 GB. [2018-06-26 19:21:08,990 INFO ]: TraceAbstraction took 32541.04 ms. Allocated memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: 29.4 MB). Free memory was 1.3 GB in the beginning and 1.1 GB in the end (delta: 176.4 MB). Peak memory consumption was 205.8 MB. Max. memory is 3.6 GB. [2018-06-26 19:21:08,995 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, 4593 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.04 ms. Allocated memory is still 304.1 MB. Free memory is still 269.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 70.36 ms. Allocated memory is still 304.1 MB. Free memory was 256.6 MB in the beginning and 254.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 38.93 ms. Allocated memory is still 304.1 MB. Free memory was 254.6 MB in the beginning and 253.6 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 274.29 ms. Allocated memory is still 304.1 MB. Free memory was 252.6 MB in the beginning and 240.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 24688.63 ms. Allocated memory was 304.1 MB in the beginning and 2.1 GB in the end (delta: 1.8 GB). Free memory was 240.6 MB in the beginning and 1.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 3.6 GB. * TraceAbstraction took 32541.04 ms. Allocated memory was 2.1 GB in the beginning and 2.2 GB in the end (delta: 29.4 MB). Free memory was 1.3 GB in the beginning and 1.1 GB in the end (delta: 176.4 MB). Peak memory consumption was 205.8 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [UNKNOWN] : Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was constructing difference of abstraction (9states) and interpolant automaton (currently 3 states, 3 states before enhancement), while ReachableStatesComputation was computing reachable states (10 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. TIMEOUT Result, 32.4s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 31.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 200 SDtfs, 1 SDslu, 7 SDs, 0 SdLazy, 17687 SolverSat, 15525 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 79 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fourslot.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_19-21-09-012.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fourslot.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_19-21-09-012.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fourslot.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_19-21-09-012.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/fourslot.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_19-21-09-012.csv Completed graceful shutdown