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/14.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:41:04,643 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:41:04,645 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:41:04,658 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:41:04,658 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:41:04,659 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:41:04,663 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:41:04,666 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:41:04,667 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:41:04,669 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:41:04,670 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:41:04,670 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:41:04,671 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:41:04,672 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:41:04,673 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:41:04,676 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:41:04,677 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:41:04,687 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:41:04,689 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:41:04,690 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:41:04,691 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:41:04,692 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:41:04,696 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:41:04,697 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:41:04,697 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:41:04,698 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:41:04,698 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:41:04,701 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:41:04,702 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:41:04,703 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:41:04,703 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:41:04,704 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:41:04,708 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:41:04,708 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:41:04,709 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:41:04,710 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:41:04,710 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:41:04,733 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:41:04,733 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:41:04,733 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:41:04,734 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:41:04,735 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:41:04,735 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:41:04,735 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:41:04,735 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:41:04,735 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:41:04,736 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:41:04,736 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:41:04,736 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:41:04,736 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:41:04,736 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:41:04,736 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:41:04,737 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:41:04,737 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:41:04,737 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:41:04,737 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:41:04,737 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:41:04,737 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:41:04,740 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:41:04,740 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:41:04,793 INFO ]: Repository-Root is: /tmp [2018-06-26 17:41:04,814 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:41:04,820 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:41:04,822 INFO ]: Initializing SmtParser... [2018-06-26 17:41:04,822 INFO ]: SmtParser initialized [2018-06-26 17:41:04,823 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/14.c.smt2 [2018-06-26 17:41:04,824 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 17:41:04,917 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/14.c.smt2 unknown [2018-06-26 17:41:05,328 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/14.c.smt2 [2018-06-26 17:41:05,333 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:41:05,339 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:41:05,340 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:41:05,340 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:41:05,340 INFO ]: ChcToBoogie initialized [2018-06-26 17:41:05,344 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:41:05" (1/1) ... [2018-06-26 17:41:05,451 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:41:05 Unit [2018-06-26 17:41:05,451 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:41:05,451 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:41:05,451 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:41:05,451 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:41:05,473 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:41:05" (1/1) ... [2018-06-26 17:41:05,474 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:41:05" (1/1) ... [2018-06-26 17:41:05,486 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:41:05" (1/1) ... [2018-06-26 17:41:05,486 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:41:05" (1/1) ... [2018-06-26 17:41:05,499 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:41:05" (1/1) ... [2018-06-26 17:41:05,510 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:41:05" (1/1) ... [2018-06-26 17:41:05,512 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:41:05" (1/1) ... [2018-06-26 17:41:05,516 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:41:05,516 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:41:05,516 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:41:05,516 INFO ]: RCFGBuilder initialized [2018-06-26 17:41:05,517 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:41:05" (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 17:41:05,543 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:41:05,543 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:41:05,543 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:41:05,543 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:41:05,543 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:41:05,543 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 17:41:06,157 INFO ]: Using library mode [2018-06-26 17:41:06,158 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:41:06 BoogieIcfgContainer [2018-06-26 17:41:06,158 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:41:06,158 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:41:06,158 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:41:06,161 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:41:06,162 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:41:06" (1/1) ... [2018-06-26 17:41:06,188 INFO ]: Initial Icfg 36 locations, 39 edges [2018-06-26 17:41:06,190 INFO ]: Using Remove infeasible edges [2018-06-26 17:41:06,190 INFO ]: Using Maximize final states [2018-06-26 17:41:06,191 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:41:06,191 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:41:06,195 INFO ]: Using Remove sink states [2018-06-26 17:41:06,196 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:41:06,196 INFO ]: Using Use SBE [2018-06-26 17:41:06,209 INFO ]: SBE split 0 edges [2018-06-26 17:41:06,219 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:41:06,220 INFO ]: 0 new accepting states [2018-06-26 17:41:07,037 INFO ]: Removed 67 edges and 28 locations by large block encoding [2018-06-26 17:41:07,040 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:41:07,043 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:41:07,043 INFO ]: 0 new accepting states [2018-06-26 17:41:07,043 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:41:07,044 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:41:07,044 INFO ]: Encoded RCFG 6 locations, 9 edges [2018-06-26 17:41:07,044 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:41:07 BasicIcfg [2018-06-26 17:41:07,044 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:41:07,045 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:41:07,045 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:41:07,049 INFO ]: TraceAbstraction initialized [2018-06-26 17:41:07,049 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:41:05" (1/4) ... [2018-06-26 17:41:07,050 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f62a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:41:07, skipping insertion in model container [2018-06-26 17:41:07,051 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:41:05" (2/4) ... [2018-06-26 17:41:07,052 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f62a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:41:07, skipping insertion in model container [2018-06-26 17:41:07,052 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:41:06" (3/4) ... [2018-06-26 17:41:07,053 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68f62a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:41:07, skipping insertion in model container [2018-06-26 17:41:07,053 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:41:07" (4/4) ... [2018-06-26 17:41:07,055 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:41:07,066 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:41:07,083 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:41:07,138 INFO ]: Using default assertion order modulation [2018-06-26 17:41:07,139 INFO ]: Interprodecural is true [2018-06-26 17:41:07,139 INFO ]: Hoare is false [2018-06-26 17:41:07,139 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:41:07,139 INFO ]: Backedges is TWOTRACK [2018-06-26 17:41:07,139 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:41:07,139 INFO ]: Difference is false [2018-06-26 17:41:07,139 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:41:07,139 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:41:07,154 INFO ]: Start isEmpty. Operand 6 states. [2018-06-26 17:41:07,175 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:41:07,175 INFO ]: Found error trace [2018-06-26 17:41:07,177 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:41:07,183 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:41:07,189 INFO ]: Analyzing trace with hash 37701241, now seen corresponding path program 1 times [2018-06-26 17:41:07,191 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:41:07,192 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:41:07,246 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:07,246 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:41:07,246 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:07,352 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:41:07,604 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:41:07,606 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:41:07,607 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:41:07,609 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:41:07,626 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:41:07,626 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:41:07,629 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-26 17:41:07,778 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:41:07,778 INFO ]: Finished difference Result 7 states and 12 transitions. [2018-06-26 17:41:07,779 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:41:07,780 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:41:07,781 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:41:07,793 INFO ]: With dead ends: 7 [2018-06-26 17:41:07,793 INFO ]: Without dead ends: 7 [2018-06-26 17:41:07,795 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:41:07,815 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-26 17:41:07,836 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-26 17:41:07,838 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 17:41:07,838 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2018-06-26 17:41:07,840 INFO ]: Start accepts. Automaton has 7 states and 12 transitions. Word has length 5 [2018-06-26 17:41:07,840 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:41:07,840 INFO ]: Abstraction has 7 states and 12 transitions. [2018-06-26 17:41:07,840 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:41:07,840 INFO ]: Start isEmpty. Operand 7 states and 12 transitions. [2018-06-26 17:41:07,840 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:41:07,840 INFO ]: Found error trace [2018-06-26 17:41:07,840 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:41:07,840 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:41:07,840 INFO ]: Analyzing trace with hash 1168508019, now seen corresponding path program 1 times [2018-06-26 17:41:07,840 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:41:07,840 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:41:07,843 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:07,843 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:41:07,843 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:07,902 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:41:08,055 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:41:08,055 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:41:08,055 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 [2018-06-26 17:41:08,063 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:41:08,231 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:41:08,248 INFO ]: Computing forward predicates... [2018-06-26 17:41:08,426 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:41:08,462 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:41:08,462 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-26 17:41:08,462 INFO ]: Interpolant automaton has 5 states [2018-06-26 17:41:08,462 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 17:41:08,462 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:41:08,463 INFO ]: Start difference. First operand 7 states and 12 transitions. Second operand 5 states. [2018-06-26 17:41:08,904 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:41:08,904 INFO ]: Finished difference Result 10 states and 21 transitions. [2018-06-26 17:41:08,905 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:41:08,905 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-26 17:41:08,905 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:41:08,905 INFO ]: With dead ends: 10 [2018-06-26 17:41:08,905 INFO ]: Without dead ends: 7 [2018-06-26 17:41:08,906 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:41:08,906 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-26 17:41:08,907 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-26 17:41:08,907 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 17:41:08,907 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 11 transitions. [2018-06-26 17:41:08,908 INFO ]: Start accepts. Automaton has 7 states and 11 transitions. Word has length 6 [2018-06-26 17:41:08,908 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:41:08,908 INFO ]: Abstraction has 7 states and 11 transitions. [2018-06-26 17:41:08,908 INFO ]: Interpolant automaton has 5 states. [2018-06-26 17:41:08,908 INFO ]: Start isEmpty. Operand 7 states and 11 transitions. [2018-06-26 17:41:08,908 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:41:08,908 INFO ]: Found error trace [2018-06-26 17:41:08,908 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:41:08,908 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:41:08,908 INFO ]: Analyzing trace with hash 1169431540, now seen corresponding path program 1 times [2018-06-26 17:41:08,908 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:41:08,908 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:41:08,909 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:08,909 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:41:08,909 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:08,937 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:41:09,048 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:41:09,048 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:41:09,048 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 17:41:09,048 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:41:09,048 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:41:09,048 INFO ]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:41:09,048 INFO ]: Start difference. First operand 7 states and 11 transitions. Second operand 4 states. [2018-06-26 17:41:09,233 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:41:09,233 INFO ]: Finished difference Result 9 states and 17 transitions. [2018-06-26 17:41:09,234 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:41:09,234 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-26 17:41:09,234 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:41:09,234 INFO ]: With dead ends: 9 [2018-06-26 17:41:09,234 INFO ]: Without dead ends: 9 [2018-06-26 17:41:09,235 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:41:09,235 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-26 17:41:09,236 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-06-26 17:41:09,236 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 17:41:09,236 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 14 transitions. [2018-06-26 17:41:09,236 INFO ]: Start accepts. Automaton has 8 states and 14 transitions. Word has length 6 [2018-06-26 17:41:09,236 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:41:09,236 INFO ]: Abstraction has 8 states and 14 transitions. [2018-06-26 17:41:09,236 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:41:09,237 INFO ]: Start isEmpty. Operand 8 states and 14 transitions. [2018-06-26 17:41:09,237 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:41:09,237 INFO ]: Found error trace [2018-06-26 17:41:09,237 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:41:09,237 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:41:09,237 INFO ]: Analyzing trace with hash 1169461331, now seen corresponding path program 1 times [2018-06-26 17:41:09,237 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:41:09,237 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:41:09,238 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:09,238 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:41:09,238 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:41:09,256 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:41:09,423 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:41:09,423 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:41:09,423 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 [2018-06-26 17:41:09,439 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:41:09,560 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:41:09,565 INFO ]: Computing forward predicates... [2018-06-26 17:41:09,674 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:41:09,700 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:41:09,700 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-26 17:41:09,701 INFO ]: Interpolant automaton has 5 states [2018-06-26 17:41:09,701 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 17:41:09,701 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:41:09,701 INFO ]: Start difference. First operand 8 states and 14 transitions. Second operand 5 states. [2018-06-26 17:41:10,183 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:41:10,183 INFO ]: Finished difference Result 8 states and 20 transitions. [2018-06-26 17:41:10,184 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-06-26 17:41:10,184 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-26 17:41:10,184 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:41:10,184 INFO ]: With dead ends: 8 [2018-06-26 17:41:10,184 INFO ]: Without dead ends: 0 [2018-06-26 17:41:10,184 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-06-26 17:41:10,184 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 17:41:10,184 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 17:41:10,184 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 17:41:10,184 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 17:41:10,184 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2018-06-26 17:41:10,184 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:41:10,184 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 17:41:10,184 INFO ]: Interpolant automaton has 5 states. [2018-06-26 17:41:10,184 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 17:41:10,184 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 17:41:10,187 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:41:10,191 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:41:10 BasicIcfg [2018-06-26 17:41:10,191 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:41:10,192 INFO ]: Toolchain (without parser) took 4857.96 ms. Allocated memory was 307.2 MB in the beginning and 355.5 MB in the end (delta: 48.2 MB). Free memory was 246.5 MB in the beginning and 295.1 MB in the end (delta: -48.6 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:41:10,193 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:41:10,193 INFO ]: ChcToBoogie took 111.07 ms. Allocated memory is still 307.2 MB. Free memory was 245.5 MB in the beginning and 243.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:41:10,193 INFO ]: Boogie Preprocessor took 64.47 ms. Allocated memory is still 307.2 MB. Free memory was 243.5 MB in the beginning and 241.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:41:10,198 INFO ]: RCFGBuilder took 641.38 ms. Allocated memory is still 307.2 MB. Free memory was 241.5 MB in the beginning and 210.5 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 3.6 GB. [2018-06-26 17:41:10,198 INFO ]: BlockEncodingV2 took 885.98 ms. Allocated memory was 307.2 MB in the beginning and 324.5 MB in the end (delta: 17.3 MB). Free memory was 210.5 MB in the beginning and 255.5 MB in the end (delta: -45.0 MB). Peak memory consumption was 30.4 MB. Max. memory is 3.6 GB. [2018-06-26 17:41:10,199 INFO ]: TraceAbstraction took 3145.37 ms. Allocated memory was 324.5 MB in the beginning and 355.5 MB in the end (delta: 30.9 MB). Free memory was 255.5 MB in the beginning and 295.1 MB in the end (delta: -39.6 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:41:10,201 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 36 locations, 39 edges - StatisticsResult: Encoded RCFG 6 locations, 9 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 111.07 ms. Allocated memory is still 307.2 MB. Free memory was 245.5 MB in the beginning and 243.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 64.47 ms. Allocated memory is still 307.2 MB. Free memory was 243.5 MB in the beginning and 241.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 641.38 ms. Allocated memory is still 307.2 MB. Free memory was 241.5 MB in the beginning and 210.5 MB in the end (delta: 31.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 885.98 ms. Allocated memory was 307.2 MB in the beginning and 324.5 MB in the end (delta: 17.3 MB). Free memory was 210.5 MB in the beginning and 255.5 MB in the end (delta: -45.0 MB). Peak memory consumption was 30.4 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3145.37 ms. Allocated memory was 324.5 MB in the beginning and 355.5 MB in the end (delta: 30.9 MB). Free memory was 255.5 MB in the beginning and 295.1 MB in the end (delta: -39.6 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, 6 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 18 SDs, 0 SdLazy, 65 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 364 SizeOfPredicates, 84 NumberOfNonLiveVariables, 1068 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/5 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/14.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-41-10-225.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/14.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-41-10-225.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/14.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-41-10-225.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/14.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-41-10-225.csv Received shutdown request...