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/22.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:42:20,896 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:42:20,902 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:42:20,914 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:42:20,915 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:42:20,915 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:42:20,917 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:42:20,918 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:42:20,920 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:42:20,921 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:42:20,921 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:42:20,922 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:42:20,922 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:42:20,924 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:42:20,925 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:42:20,926 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:42:20,927 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:42:20,929 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:42:20,933 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:42:20,935 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:42:20,936 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:42:20,941 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:42:20,943 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:42:20,944 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:42:20,944 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:42:20,946 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:42:20,947 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:42:20,947 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:42:20,948 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:42:20,949 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:42:20,949 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:42:20,954 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:42:20,954 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:42:20,954 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:42:20,955 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:42:20,955 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:42:20,956 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:42:20,985 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:42:20,985 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:42:20,986 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:42:20,986 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:42:20,987 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:42:20,987 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:42:20,987 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:42:20,987 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:42:20,988 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:42:20,988 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:42:20,988 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:42:20,988 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:42:20,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:42:20,990 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:42:20,990 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:42:20,990 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:42:20,990 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:42:20,991 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:42:20,991 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:42:20,991 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:42:20,991 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:42:20,993 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:42:20,993 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:42:21,051 INFO ]: Repository-Root is: /tmp [2018-06-26 17:42:21,072 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:42:21,077 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:42:21,079 INFO ]: Initializing SmtParser... [2018-06-26 17:42:21,079 INFO ]: SmtParser initialized [2018-06-26 17:42:21,080 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/22.c.smt2 [2018-06-26 17:42:21,082 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 17:42:21,182 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/22.c.smt2 unknown [2018-06-26 17:42:21,759 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/22.c.smt2 [2018-06-26 17:42:21,765 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:42:21,771 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:42:21,772 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:42:21,772 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:42:21,772 INFO ]: ChcToBoogie initialized [2018-06-26 17:42:21,784 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:42:21" (1/1) ... [2018-06-26 17:42:21,884 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:42:21 Unit [2018-06-26 17:42:21,885 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:42:21,885 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:42:21,885 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:42:21,886 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:42:21,907 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:42:21" (1/1) ... [2018-06-26 17:42:21,908 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:42:21" (1/1) ... [2018-06-26 17:42:21,920 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:42:21" (1/1) ... [2018-06-26 17:42:21,920 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:42:21" (1/1) ... [2018-06-26 17:42:21,937 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:42:21" (1/1) ... [2018-06-26 17:42:21,940 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:42:21" (1/1) ... [2018-06-26 17:42:21,941 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:42:21" (1/1) ... [2018-06-26 17:42:21,953 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:42:21,953 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:42:21,953 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:42:21,954 INFO ]: RCFGBuilder initialized [2018-06-26 17:42:21,954 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:42:21" (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 17:42:21,970 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:42:21,970 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:42:21,970 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:42:21,970 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:42:21,970 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:42:21,970 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 17:42:22,494 INFO ]: Using library mode [2018-06-26 17:42:22,495 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:42:22 BoogieIcfgContainer [2018-06-26 17:42:22,495 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:42:22,495 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:42:22,495 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:42:22,496 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:42:22,496 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:42:22" (1/1) ... [2018-06-26 17:42:22,513 INFO ]: Initial Icfg 35 locations, 41 edges [2018-06-26 17:42:22,514 INFO ]: Using Remove infeasible edges [2018-06-26 17:42:22,515 INFO ]: Using Maximize final states [2018-06-26 17:42:22,515 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:42:22,516 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:42:22,517 INFO ]: Using Remove sink states [2018-06-26 17:42:22,519 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:42:22,519 INFO ]: Using Use SBE [2018-06-26 17:42:22,528 INFO ]: SBE split 0 edges [2018-06-26 17:42:22,533 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:42:22,535 INFO ]: 0 new accepting states [2018-06-26 17:42:23,670 INFO ]: Removed 85 edges and 26 locations by large block encoding [2018-06-26 17:42:23,672 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:42:23,673 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:42:23,673 INFO ]: 0 new accepting states [2018-06-26 17:42:23,673 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:42:23,673 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:42:23,673 INFO ]: Encoded RCFG 7 locations, 13 edges [2018-06-26 17:42:23,675 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:42:23 BasicIcfg [2018-06-26 17:42:23,675 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:42:23,676 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:42:23,676 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:42:23,679 INFO ]: TraceAbstraction initialized [2018-06-26 17:42:23,679 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:42:21" (1/4) ... [2018-06-26 17:42:23,680 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649ce8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:42:23, skipping insertion in model container [2018-06-26 17:42:23,680 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:42:21" (2/4) ... [2018-06-26 17:42:23,680 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649ce8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:42:23, skipping insertion in model container [2018-06-26 17:42:23,680 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:42:22" (3/4) ... [2018-06-26 17:42:23,681 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649ce8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:42:23, skipping insertion in model container [2018-06-26 17:42:23,681 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:42:23" (4/4) ... [2018-06-26 17:42:23,683 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:42:23,693 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:42:23,707 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:42:23,755 INFO ]: Using default assertion order modulation [2018-06-26 17:42:23,755 INFO ]: Interprodecural is true [2018-06-26 17:42:23,755 INFO ]: Hoare is false [2018-06-26 17:42:23,755 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:42:23,755 INFO ]: Backedges is TWOTRACK [2018-06-26 17:42:23,755 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:42:23,755 INFO ]: Difference is false [2018-06-26 17:42:23,755 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:42:23,755 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:42:23,766 INFO ]: Start isEmpty. Operand 7 states. [2018-06-26 17:42:23,776 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:42:23,777 INFO ]: Found error trace [2018-06-26 17:42:23,778 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:42:23,778 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:42:23,783 INFO ]: Analyzing trace with hash 39480117, now seen corresponding path program 1 times [2018-06-26 17:42:23,785 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:42:23,785 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:42:23,832 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:42:23,832 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:42:23,832 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:42:23,908 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:42:24,065 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:42:24,066 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:42:24,066 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:42:24,068 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:42:24,080 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:42:24,081 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:42:24,083 INFO ]: Start difference. First operand 7 states. Second operand 3 states. [2018-06-26 17:42:24,293 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:42:24,293 INFO ]: Finished difference Result 9 states and 18 transitions. [2018-06-26 17:42:24,294 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:42:24,295 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:42:24,295 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:42:24,308 INFO ]: With dead ends: 9 [2018-06-26 17:42:24,308 INFO ]: Without dead ends: 9 [2018-06-26 17:42:24,313 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 17:42:24,345 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-26 17:42:24,381 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-06-26 17:42:24,383 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 17:42:24,383 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-06-26 17:42:24,386 INFO ]: Start accepts. Automaton has 8 states and 16 transitions. Word has length 5 [2018-06-26 17:42:24,387 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:42:24,387 INFO ]: Abstraction has 8 states and 16 transitions. [2018-06-26 17:42:24,387 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:42:24,387 INFO ]: Start isEmpty. Operand 8 states and 16 transitions. [2018-06-26 17:42:24,387 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:42:24,387 INFO ]: Found error trace [2018-06-26 17:42:24,387 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:42:24,388 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:42:24,388 INFO ]: Analyzing trace with hash 39539699, now seen corresponding path program 1 times [2018-06-26 17:42:24,388 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:42:24,388 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:42:24,389 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:42:24,389 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:42:24,389 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:42:24,464 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:42:24,554 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:42:24,554 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:42:24,554 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:42:24,556 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:42:24,556 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:42:24,556 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:42:24,557 INFO ]: Start difference. First operand 8 states and 16 transitions. Second operand 3 states. [2018-06-26 17:42:24,751 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:42:24,751 INFO ]: Finished difference Result 10 states and 21 transitions. [2018-06-26 17:42:24,752 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:42:24,752 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:42:24,752 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:42:24,752 INFO ]: With dead ends: 10 [2018-06-26 17:42:24,752 INFO ]: Without dead ends: 10 [2018-06-26 17:42:24,753 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 17:42:24,754 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-26 17:42:24,755 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 8. [2018-06-26 17:42:24,755 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-26 17:42:24,755 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-06-26 17:42:24,756 INFO ]: Start accepts. Automaton has 8 states and 16 transitions. Word has length 5 [2018-06-26 17:42:24,756 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:42:24,756 INFO ]: Abstraction has 8 states and 16 transitions. [2018-06-26 17:42:24,756 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:42:24,756 INFO ]: Start isEmpty. Operand 8 states and 16 transitions. [2018-06-26 17:42:24,756 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-26 17:42:24,756 INFO ]: Found error trace [2018-06-26 17:42:24,756 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-26 17:42:24,756 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:42:24,756 INFO ]: Analyzing trace with hash -715651585, now seen corresponding path program 1 times [2018-06-26 17:42:24,756 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:42:24,756 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:42:24,757 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:42:24,757 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:42:24,757 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:42:24,784 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:42:24,908 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:42:24,908 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:42:24,908 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-26 17:42:24,908 INFO ]: Interpolant automaton has 4 states [2018-06-26 17:42:24,908 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-26 17:42:24,908 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-26 17:42:24,908 INFO ]: Start difference. First operand 8 states and 16 transitions. Second operand 4 states. [2018-06-26 17:42:24,994 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:42:24,994 INFO ]: Finished difference Result 4 states and 8 transitions. [2018-06-26 17:42:24,994 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-26 17:42:24,994 INFO ]: Start accepts. Automaton has 4 states. Word has length 7 [2018-06-26 17:42:24,995 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:42:24,995 INFO ]: With dead ends: 4 [2018-06-26 17:42:24,995 INFO ]: Without dead ends: 0 [2018-06-26 17:42:24,995 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:42:24,995 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 17:42:24,995 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 17:42:24,995 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 17:42:24,995 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 17:42:24,995 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-06-26 17:42:24,995 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:42:24,995 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 17:42:24,995 INFO ]: Interpolant automaton has 4 states. [2018-06-26 17:42:24,995 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 17:42:24,995 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 17:42:24,998 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:42:24,999 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:42:24 BasicIcfg [2018-06-26 17:42:24,999 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:42:25,000 INFO ]: Toolchain (without parser) took 3235.15 ms. Allocated memory was 308.8 MB in the beginning and 329.3 MB in the end (delta: 20.4 MB). Free memory was 249.2 MB in the beginning and 193.5 MB in the end (delta: 55.6 MB). Peak memory consumption was 76.1 MB. Max. memory is 3.6 GB. [2018-06-26 17:42:25,002 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:42:25,002 INFO ]: ChcToBoogie took 113.48 ms. Allocated memory is still 308.8 MB. Free memory was 249.2 MB in the beginning and 247.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:42:25,003 INFO ]: Boogie Preprocessor took 67.44 ms. Allocated memory is still 308.8 MB. Free memory was 247.2 MB in the beginning and 245.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:42:25,003 INFO ]: RCFGBuilder took 541.50 ms. Allocated memory is still 308.8 MB. Free memory was 245.2 MB in the beginning and 213.2 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 3.6 GB. [2018-06-26 17:42:25,004 INFO ]: BlockEncodingV2 took 1179.49 ms. Allocated memory was 308.8 MB in the beginning and 329.3 MB in the end (delta: 20.4 MB). Free memory was 213.2 MB in the beginning and 235.5 MB in the end (delta: -22.2 MB). Peak memory consumption was 31.6 MB. Max. memory is 3.6 GB. [2018-06-26 17:42:25,004 INFO ]: TraceAbstraction took 1323.80 ms. Allocated memory is still 329.3 MB. Free memory was 235.5 MB in the beginning and 193.5 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 3.6 GB. [2018-06-26 17:42:25,007 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 35 locations, 41 edges - StatisticsResult: Encoded RCFG 7 locations, 13 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 308.8 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 113.48 ms. Allocated memory is still 308.8 MB. Free memory was 249.2 MB in the beginning and 247.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 67.44 ms. Allocated memory is still 308.8 MB. Free memory was 247.2 MB in the beginning and 245.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 541.50 ms. Allocated memory is still 308.8 MB. Free memory was 245.2 MB in the beginning and 213.2 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 1179.49 ms. Allocated memory was 308.8 MB in the beginning and 329.3 MB in the end (delta: 20.4 MB). Free memory was 213.2 MB in the beginning and 235.5 MB in the end (delta: -22.2 MB). Peak memory consumption was 31.6 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1323.80 ms. Allocated memory is still 329.3 MB. Free memory was 235.5 MB in the beginning and 193.5 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 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, 7 locations, 1 error locations. SAFE Result, 1.2s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 9 SDslu, 12 SDs, 0 SdLazy, 27 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, 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, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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/22.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-42-25-018.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/22.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-42-25-018.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/22.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-42-25-018.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/22.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-42-25-018.csv Received shutdown request...