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/38.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:45:17,731 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:45:17,734 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:45:17,754 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:45:17,755 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:45:17,756 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:45:17,758 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:45:17,762 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:45:17,766 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:45:17,767 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:45:17,768 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:45:17,768 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:45:17,771 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:45:17,773 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:45:17,774 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:45:17,779 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:45:17,780 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:45:17,785 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:45:17,800 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:45:17,802 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:45:17,804 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:45:17,805 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:45:17,808 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:45:17,816 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:45:17,816 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:45:17,817 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:45:17,818 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:45:17,819 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:45:17,820 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:45:17,821 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:45:17,821 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:45:17,822 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:45:17,822 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:45:17,823 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:45:17,831 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:45:17,832 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:45:17,832 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:45:17,853 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:45:17,853 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:45:17,854 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:45:17,854 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:45:17,855 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:45:17,855 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:45:17,856 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:45:17,856 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:45:17,856 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:45:17,856 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:45:17,857 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:45:17,857 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:45:17,857 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:45:17,857 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:45:17,858 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:45:17,858 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:45:17,858 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:45:17,858 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:45:17,859 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:45:17,859 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:45:17,859 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:45:17,861 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:45:17,861 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:45:17,906 INFO ]: Repository-Root is: /tmp [2018-06-26 17:45:17,924 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:45:17,929 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:45:17,930 INFO ]: Initializing SmtParser... [2018-06-26 17:45:17,930 INFO ]: SmtParser initialized [2018-06-26 17:45:17,931 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/38.c.smt2 [2018-06-26 17:45:17,932 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 17:45:18,015 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/38.c.smt2 unknown [2018-06-26 17:45:18,410 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/38.c.smt2 [2018-06-26 17:45:18,414 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:45:18,425 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:45:18,425 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:45:18,425 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:45:18,425 INFO ]: ChcToBoogie initialized [2018-06-26 17:45:18,434 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:45:18" (1/1) ... [2018-06-26 17:45:18,523 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:18 Unit [2018-06-26 17:45:18,523 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:45:18,524 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:45:18,524 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:45:18,524 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:45:18,546 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:18" (1/1) ... [2018-06-26 17:45:18,546 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:18" (1/1) ... [2018-06-26 17:45:18,555 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:18" (1/1) ... [2018-06-26 17:45:18,555 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:18" (1/1) ... [2018-06-26 17:45:18,561 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:18" (1/1) ... [2018-06-26 17:45:18,570 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:18" (1/1) ... [2018-06-26 17:45:18,571 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:18" (1/1) ... [2018-06-26 17:45:18,580 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:45:18,580 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:45:18,580 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:45:18,581 INFO ]: RCFGBuilder initialized [2018-06-26 17:45:18,581 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:18" (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 17:45:18,600 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:45:18,600 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:45:18,600 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:45:18,600 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:45:18,600 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:45:18,600 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 17:45:19,094 INFO ]: Using library mode [2018-06-26 17:45:19,094 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:45:19 BoogieIcfgContainer [2018-06-26 17:45:19,094 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:45:19,095 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:45:19,095 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:45:19,096 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:45:19,096 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:45:19" (1/1) ... [2018-06-26 17:45:19,111 INFO ]: Initial Icfg 30 locations, 33 edges [2018-06-26 17:45:19,112 INFO ]: Using Remove infeasible edges [2018-06-26 17:45:19,113 INFO ]: Using Maximize final states [2018-06-26 17:45:19,113 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:45:19,113 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:45:19,115 INFO ]: Using Remove sink states [2018-06-26 17:45:19,116 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:45:19,116 INFO ]: Using Use SBE [2018-06-26 17:45:19,127 INFO ]: SBE split 0 edges [2018-06-26 17:45:19,133 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:45:19,134 INFO ]: 0 new accepting states [2018-06-26 17:45:19,702 INFO ]: Removed 55 edges and 22 locations by large block encoding [2018-06-26 17:45:19,704 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:45:19,705 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:45:19,705 INFO ]: 0 new accepting states [2018-06-26 17:45:19,706 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:45:19,706 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:45:19,706 INFO ]: Encoded RCFG 6 locations, 9 edges [2018-06-26 17:45:19,706 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:45:19 BasicIcfg [2018-06-26 17:45:19,706 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:45:19,709 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:45:19,709 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:45:19,712 INFO ]: TraceAbstraction initialized [2018-06-26 17:45:19,713 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:45:18" (1/4) ... [2018-06-26 17:45:19,714 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134493cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:45:19, skipping insertion in model container [2018-06-26 17:45:19,714 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:18" (2/4) ... [2018-06-26 17:45:19,715 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134493cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:45:19, skipping insertion in model container [2018-06-26 17:45:19,715 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:45:19" (3/4) ... [2018-06-26 17:45:19,715 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134493cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:45:19, skipping insertion in model container [2018-06-26 17:45:19,715 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:45:19" (4/4) ... [2018-06-26 17:45:19,719 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:45:19,728 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:45:19,744 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:45:19,783 INFO ]: Using default assertion order modulation [2018-06-26 17:45:19,784 INFO ]: Interprodecural is true [2018-06-26 17:45:19,784 INFO ]: Hoare is false [2018-06-26 17:45:19,784 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:45:19,784 INFO ]: Backedges is TWOTRACK [2018-06-26 17:45:19,784 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:45:19,784 INFO ]: Difference is false [2018-06-26 17:45:19,784 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:45:19,784 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:45:19,795 INFO ]: Start isEmpty. Operand 6 states. [2018-06-26 17:45:19,815 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:45:19,815 INFO ]: Found error trace [2018-06-26 17:45:19,816 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:45:19,816 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:45:19,821 INFO ]: Analyzing trace with hash 38493876, now seen corresponding path program 1 times [2018-06-26 17:45:19,823 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:45:19,823 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:45:19,855 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:19,855 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:19,856 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:19,935 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:20,060 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:20,062 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:45:20,062 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:45:20,063 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:45:20,076 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:45:20,076 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:45:20,079 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-26 17:45:20,159 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:45:20,159 INFO ]: Finished difference Result 7 states and 12 transitions. [2018-06-26 17:45:20,160 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:45:20,161 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:45:20,161 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:45:20,174 INFO ]: With dead ends: 7 [2018-06-26 17:45:20,174 INFO ]: Without dead ends: 7 [2018-06-26 17:45:20,179 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:45:20,197 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-26 17:45:20,220 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-26 17:45:20,223 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 17:45:20,223 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2018-06-26 17:45:20,224 INFO ]: Start accepts. Automaton has 7 states and 12 transitions. Word has length 5 [2018-06-26 17:45:20,224 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:45:20,224 INFO ]: Abstraction has 7 states and 12 transitions. [2018-06-26 17:45:20,225 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:45:20,225 INFO ]: Start isEmpty. Operand 7 states and 12 transitions. [2018-06-26 17:45:20,225 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:45:20,225 INFO ]: Found error trace [2018-06-26 17:45:20,225 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:45:20,225 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:45:20,225 INFO ]: Analyzing trace with hash 1193103663, now seen corresponding path program 1 times [2018-06-26 17:45:20,225 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:45:20,225 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:45:20,226 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:20,226 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:20,226 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:20,296 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:20,382 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:20,382 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:45:20,383 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:45:20,385 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:45:20,385 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:45:20,385 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:45:20,385 INFO ]: Start difference. First operand 7 states and 12 transitions. Second operand 3 states. [2018-06-26 17:45:20,476 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:45:20,476 INFO ]: Finished difference Result 8 states and 12 transitions. [2018-06-26 17:45:20,477 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:45:20,477 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 17:45:20,477 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:45:20,477 INFO ]: With dead ends: 8 [2018-06-26 17:45:20,477 INFO ]: Without dead ends: 8 [2018-06-26 17:45:20,478 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:45:20,478 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-26 17:45:20,479 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-26 17:45:20,479 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 17:45:20,480 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2018-06-26 17:45:20,480 INFO ]: Start accepts. Automaton has 8 states and 12 transitions. Word has length 6 [2018-06-26 17:45:20,480 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:45:20,480 INFO ]: Abstraction has 8 states and 12 transitions. [2018-06-26 17:45:20,480 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:45:20,480 INFO ]: Start isEmpty. Operand 8 states and 12 transitions. [2018-06-26 17:45:20,480 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:45:20,480 INFO ]: Found error trace [2018-06-26 17:45:20,480 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:45:20,480 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:45:20,480 INFO ]: Analyzing trace with hash 1193222827, now seen corresponding path program 1 times [2018-06-26 17:45:20,480 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:45:20,480 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:45:20,483 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:20,483 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:20,483 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:20,536 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:20,788 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:20,789 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:45:20,789 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 17:45:20,803 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:20,880 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:20,889 INFO ]: Computing forward predicates... [2018-06-26 17:45:20,990 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:21,012 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-26 17:45:21,012 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2018-06-26 17:45:21,012 INFO ]: Interpolant automaton has 5 states [2018-06-26 17:45:21,012 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 17:45:21,012 INFO ]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:45:21,013 INFO ]: Start difference. First operand 8 states and 12 transitions. Second operand 5 states. [2018-06-26 17:45:21,159 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:45:21,160 INFO ]: Finished difference Result 11 states and 17 transitions. [2018-06-26 17:45:21,160 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:45:21,161 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-26 17:45:21,161 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:45:21,161 INFO ]: With dead ends: 11 [2018-06-26 17:45:21,161 INFO ]: Without dead ends: 8 [2018-06-26 17:45:21,161 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:45:21,161 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-26 17:45:21,163 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-26 17:45:21,163 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 17:45:21,163 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-06-26 17:45:21,163 INFO ]: Start accepts. Automaton has 8 states and 11 transitions. Word has length 6 [2018-06-26 17:45:21,163 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:45:21,163 INFO ]: Abstraction has 8 states and 11 transitions. [2018-06-26 17:45:21,163 INFO ]: Interpolant automaton has 5 states. [2018-06-26 17:45:21,163 INFO ]: Start isEmpty. Operand 8 states and 11 transitions. [2018-06-26 17:45:21,163 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:45:21,163 INFO ]: Found error trace [2018-06-26 17:45:21,163 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:45:21,164 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:45:21,164 INFO ]: Analyzing trace with hash 1194146348, now seen corresponding path program 1 times [2018-06-26 17:45:21,164 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:45:21,164 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:45:21,165 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:21,165 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:21,165 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:21,208 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:21,322 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:21,322 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:45:21,322 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:45:21,322 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:45:21,322 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:45:21,322 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:45:21,322 INFO ]: Start difference. First operand 8 states and 11 transitions. Second operand 3 states. [2018-06-26 17:45:21,354 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:45:21,354 INFO ]: Finished difference Result 8 states and 10 transitions. [2018-06-26 17:45:21,355 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:45:21,355 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 17:45:21,355 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:45:21,355 INFO ]: With dead ends: 8 [2018-06-26 17:45:21,355 INFO ]: Without dead ends: 8 [2018-06-26 17:45:21,355 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:45:21,355 INFO ]: Start minimizeSevpa. Operand 8 states. [2018-06-26 17:45:21,357 INFO ]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-06-26 17:45:21,357 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 17:45:21,358 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions. [2018-06-26 17:45:21,358 INFO ]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 6 [2018-06-26 17:45:21,358 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:45:21,358 INFO ]: Abstraction has 8 states and 10 transitions. [2018-06-26 17:45:21,358 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:45:21,358 INFO ]: Start isEmpty. Operand 8 states and 10 transitions. [2018-06-26 17:45:21,358 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:45:21,358 INFO ]: Found error trace [2018-06-26 17:45:21,358 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:45:21,358 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:45:21,358 INFO ]: Analyzing trace with hash -1636375369, now seen corresponding path program 1 times [2018-06-26 17:45:21,358 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:45:21,358 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:45:21,359 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:21,359 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:21,359 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:21,386 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:21,501 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:21,501 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:45:21,501 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 17:45:21,507 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:21,587 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:21,592 INFO ]: Computing forward predicates... [2018-06-26 17:45:21,846 INFO ]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 17:45:21,875 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:45:21,875 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-06-26 17:45:21,875 INFO ]: Interpolant automaton has 6 states [2018-06-26 17:45:21,875 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 17:45:21,876 INFO ]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:45:21,876 INFO ]: Start difference. First operand 8 states and 10 transitions. Second operand 6 states. [2018-06-26 17:45:21,975 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:45:21,975 INFO ]: Finished difference Result 10 states and 14 transitions. [2018-06-26 17:45:21,976 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:45:21,976 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-26 17:45:21,976 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:45:21,976 INFO ]: With dead ends: 10 [2018-06-26 17:45:21,976 INFO ]: Without dead ends: 10 [2018-06-26 17:45:21,977 INFO ]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:45:21,977 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-26 17:45:21,978 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-06-26 17:45:21,978 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:45:21,979 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-06-26 17:45:21,979 INFO ]: Start accepts. Automaton has 9 states and 13 transitions. Word has length 7 [2018-06-26 17:45:21,979 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:45:21,979 INFO ]: Abstraction has 9 states and 13 transitions. [2018-06-26 17:45:21,979 INFO ]: Interpolant automaton has 6 states. [2018-06-26 17:45:21,979 INFO ]: Start isEmpty. Operand 9 states and 13 transitions. [2018-06-26 17:45:21,979 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 17:45:21,979 INFO ]: Found error trace [2018-06-26 17:45:21,979 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-06-26 17:45:21,979 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:45:21,979 INFO ]: Analyzing trace with hash 815458704, now seen corresponding path program 2 times [2018-06-26 17:45:21,979 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:45:21,979 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:45:21,980 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:21,980 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:21,980 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:22,016 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:22,095 INFO ]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:22,095 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:45:22,095 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 [2018-06-26 17:45:22,101 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 17:45:22,215 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 17:45:22,215 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:22,220 INFO ]: Computing forward predicates... [2018-06-26 17:45:22,295 INFO ]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-06-26 17:45:22,316 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:45:22,316 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-06-26 17:45:22,316 INFO ]: Interpolant automaton has 7 states [2018-06-26 17:45:22,316 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-26 17:45:22,316 INFO ]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-26 17:45:22,316 INFO ]: Start difference. First operand 9 states and 13 transitions. Second operand 7 states. [2018-06-26 17:45:22,359 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:45:22,359 INFO ]: Finished difference Result 4 states and 5 transitions. [2018-06-26 17:45:22,360 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:45:22,360 INFO ]: Start accepts. Automaton has 7 states. Word has length 8 [2018-06-26 17:45:22,360 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:45:22,360 INFO ]: With dead ends: 4 [2018-06-26 17:45:22,360 INFO ]: Without dead ends: 0 [2018-06-26 17:45:22,360 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-06-26 17:45:22,360 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 17:45:22,360 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 17:45:22,360 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 17:45:22,360 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 17:45:22,360 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-26 17:45:22,360 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:45:22,360 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 17:45:22,360 INFO ]: Interpolant automaton has 7 states. [2018-06-26 17:45:22,360 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 17:45:22,360 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 17:45:22,363 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:45:22,364 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:45:22 BasicIcfg [2018-06-26 17:45:22,364 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:45:22,365 INFO ]: Toolchain (without parser) took 3950.08 ms. Allocated memory was 305.7 MB in the beginning and 348.7 MB in the end (delta: 43.0 MB). Free memory was 250.0 MB in the beginning and 298.9 MB in the end (delta: -48.9 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:45:22,367 INFO ]: SmtParser took 0.06 ms. Allocated memory is still 305.7 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:45:22,367 INFO ]: ChcToBoogie took 98.40 ms. Allocated memory is still 305.7 MB. Free memory was 250.0 MB in the beginning and 248.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:45:22,368 INFO ]: Boogie Preprocessor took 56.05 ms. Allocated memory is still 305.7 MB. Free memory was 248.0 MB in the beginning and 246.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:45:22,368 INFO ]: RCFGBuilder took 514.05 ms. Allocated memory is still 305.7 MB. Free memory was 246.0 MB in the beginning and 224.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:45:22,369 INFO ]: BlockEncodingV2 took 611.48 ms. Allocated memory was 305.7 MB in the beginning and 320.9 MB in the end (delta: 15.2 MB). Free memory was 224.1 MB in the beginning and 287.6 MB in the end (delta: -63.5 MB). Peak memory consumption was 45.4 MB. Max. memory is 3.6 GB. [2018-06-26 17:45:22,370 INFO ]: TraceAbstraction took 2655.09 ms. Allocated memory was 320.9 MB in the beginning and 348.7 MB in the end (delta: 27.8 MB). Free memory was 287.6 MB in the beginning and 298.9 MB in the end (delta: -11.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 3.6 GB. [2018-06-26 17:45:22,381 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 30 locations, 33 edges - StatisticsResult: Encoded RCFG 6 locations, 9 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.06 ms. Allocated memory is still 305.7 MB. Free memory is still 270.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 98.40 ms. Allocated memory is still 305.7 MB. Free memory was 250.0 MB in the beginning and 248.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 56.05 ms. Allocated memory is still 305.7 MB. Free memory was 248.0 MB in the beginning and 246.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 514.05 ms. Allocated memory is still 305.7 MB. Free memory was 246.0 MB in the beginning and 224.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 611.48 ms. Allocated memory was 305.7 MB in the beginning and 320.9 MB in the end (delta: 15.2 MB). Free memory was 224.1 MB in the beginning and 287.6 MB in the end (delta: -63.5 MB). Peak memory consumption was 45.4 MB. Max. memory is 3.6 GB. * TraceAbstraction took 2655.09 ms. Allocated memory was 320.9 MB in the beginning and 348.7 MB in the end (delta: 27.8 MB). Free memory was 287.6 MB in the beginning and 298.9 MB in the end (delta: -11.3 MB). Peak memory consumption was 16.5 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, 2.5s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 25 SDs, 0 SdLazy, 58 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=5, 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, 6 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 50 ConstructedInterpolants, 2 QuantifiedInterpolants, 1141 SizeOfPredicates, 109 NumberOfNonLiveVariables, 1444 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 10/22 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/38.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-45-22-399.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/38.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-45-22-399.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/38.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-45-22-399.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/38.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-45-22-399.csv Received shutdown request...