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/37.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:43:39,671 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:43:39,673 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:43:39,684 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:43:39,684 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:43:39,685 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:43:39,686 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:43:39,688 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:43:39,690 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:43:39,690 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:43:39,691 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:43:39,692 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:43:39,692 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:43:39,693 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:43:39,694 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:43:39,695 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:43:39,697 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:43:39,699 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:43:39,700 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:43:39,701 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:43:39,703 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:43:39,705 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:43:39,705 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:43:39,706 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:43:39,706 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:43:39,707 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:43:39,708 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:43:39,709 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:43:39,710 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:43:39,710 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:43:39,711 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:43:39,711 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:43:39,712 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:43:39,712 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:43:39,713 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:43:39,713 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:43:39,734 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:43:39,734 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:43:39,740 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:43:39,740 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:43:39,741 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:43:39,741 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:43:39,741 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:43:39,742 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:43:39,742 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:43:39,742 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:43:39,742 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:43:39,743 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:43:39,743 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:43:39,743 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:43:39,743 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:43:39,743 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:43:39,744 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:43:39,744 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:43:39,744 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:43:39,744 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:43:39,744 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:43:39,747 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:43:39,747 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:43:39,787 INFO ]: Repository-Root is: /tmp [2018-06-24 20:43:39,806 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:43:39,811 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:43:39,812 INFO ]: Initializing SmtParser... [2018-06-24 20:43:39,812 INFO ]: SmtParser initialized [2018-06-24 20:43:39,813 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/37.c.smt2 [2018-06-24 20:43:39,814 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 20:43:39,893 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/37.c.smt2 unknown [2018-06-24 20:43:40,339 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/37.c.smt2 [2018-06-24 20:43:40,343 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:43:40,354 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:43:40,355 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:43:40,355 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:43:40,355 INFO ]: ChcToBoogie initialized [2018-06-24 20:43:40,358 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:43:40" (1/1) ... [2018-06-24 20:43:40,438 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:40 Unit [2018-06-24 20:43:40,438 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:43:40,439 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:43:40,439 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:43:40,439 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:43:40,466 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:40" (1/1) ... [2018-06-24 20:43:40,466 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:40" (1/1) ... [2018-06-24 20:43:40,474 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:40" (1/1) ... [2018-06-24 20:43:40,474 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:40" (1/1) ... [2018-06-24 20:43:40,480 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:40" (1/1) ... [2018-06-24 20:43:40,489 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:40" (1/1) ... [2018-06-24 20:43:40,490 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:40" (1/1) ... [2018-06-24 20:43:40,500 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:43:40,500 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:43:40,500 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:43:40,500 INFO ]: RCFGBuilder initialized [2018-06-24 20:43:40,501 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:40" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 20:43:40,522 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:43:40,522 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:43:40,522 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:43:40,522 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:43:40,522 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:43:40,522 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:43:41,099 INFO ]: Using library mode [2018-06-24 20:43:41,100 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:43:41 BoogieIcfgContainer [2018-06-24 20:43:41,100 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:43:41,100 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:43:41,100 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:43:41,104 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:43:41,104 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:43:41" (1/1) ... [2018-06-24 20:43:41,127 INFO ]: Initial Icfg 34 locations, 37 edges [2018-06-24 20:43:41,128 INFO ]: Using Remove infeasible edges [2018-06-24 20:43:41,129 INFO ]: Using Maximize final states [2018-06-24 20:43:41,129 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:43:41,130 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:43:41,133 INFO ]: Using Remove sink states [2018-06-24 20:43:41,134 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:43:41,134 INFO ]: Using Use SBE [2018-06-24 20:43:41,145 INFO ]: SBE split 0 edges [2018-06-24 20:43:41,156 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 20:43:41,158 INFO ]: 0 new accepting states [2018-06-24 20:43:41,824 INFO ]: Removed 65 edges and 26 locations by large block encoding [2018-06-24 20:43:41,826 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:43:41,828 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:43:41,829 INFO ]: 0 new accepting states [2018-06-24 20:43:41,829 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:43:41,830 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:43:41,830 INFO ]: Encoded RCFG 6 locations, 9 edges [2018-06-24 20:43:41,830 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:43:41 BasicIcfg [2018-06-24 20:43:41,830 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:43:41,831 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:43:41,831 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:43:41,835 INFO ]: TraceAbstraction initialized [2018-06-24 20:43:41,836 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:43:40" (1/4) ... [2018-06-24 20:43:41,836 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1111324d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:43:41, skipping insertion in model container [2018-06-24 20:43:41,836 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:43:40" (2/4) ... [2018-06-24 20:43:41,837 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1111324d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:43:41, skipping insertion in model container [2018-06-24 20:43:41,837 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:43:41" (3/4) ... [2018-06-24 20:43:41,838 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1111324d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:43:41, skipping insertion in model container [2018-06-24 20:43:41,838 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:43:41" (4/4) ... [2018-06-24 20:43:41,840 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:43:41,852 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:43:41,871 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:43:41,922 INFO ]: Using default assertion order modulation [2018-06-24 20:43:41,923 INFO ]: Interprodecural is true [2018-06-24 20:43:41,923 INFO ]: Hoare is false [2018-06-24 20:43:41,923 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:43:41,923 INFO ]: Backedges is TWOTRACK [2018-06-24 20:43:41,923 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:43:41,923 INFO ]: Difference is false [2018-06-24 20:43:41,923 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:43:41,923 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:43:41,939 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 20:43:41,951 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:43:41,951 INFO ]: Found error trace [2018-06-24 20:43:41,952 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:43:41,953 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:43:41,964 INFO ]: Analyzing trace with hash 36805526, now seen corresponding path program 1 times [2018-06-24 20:43:41,966 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:43:41,966 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:43:42,000 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:42,000 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:42,000 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:42,079 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:42,176 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:43:42,177 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:43:42,177 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:43:42,179 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:43:42,193 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:43:42,193 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:43:42,195 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 20:43:42,340 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:43:42,341 INFO ]: Finished difference Result 7 states and 12 transitions. [2018-06-24 20:43:42,341 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:43:42,343 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:43:42,343 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:43:42,354 INFO ]: With dead ends: 7 [2018-06-24 20:43:42,354 INFO ]: Without dead ends: 7 [2018-06-24 20:43:42,356 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:43:42,377 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 20:43:42,402 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 20:43:42,403 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 20:43:42,403 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 12 transitions. [2018-06-24 20:43:42,404 INFO ]: Start accepts. Automaton has 7 states and 12 transitions. Word has length 5 [2018-06-24 20:43:42,404 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:43:42,405 INFO ]: Abstraction has 7 states and 12 transitions. [2018-06-24 20:43:42,405 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:43:42,405 INFO ]: Start isEmpty. Operand 7 states and 12 transitions. [2018-06-24 20:43:42,406 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:43:42,406 INFO ]: Found error trace [2018-06-24 20:43:42,406 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:43:42,406 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:43:42,406 INFO ]: Analyzing trace with hash 1140859986, now seen corresponding path program 1 times [2018-06-24 20:43:42,406 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:43:42,406 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:43:42,407 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:42,407 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:42,407 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:42,449 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:42,544 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:43:42,544 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:43:42,544 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:43:42,551 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:42,663 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:42,673 INFO ]: Computing forward predicates... [2018-06-24 20:43:42,880 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:43:42,914 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 20:43:42,914 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-24 20:43:42,915 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:43:42,915 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:43:42,915 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:43:42,915 INFO ]: Start difference. First operand 7 states and 12 transitions. Second operand 5 states. [2018-06-24 20:43:43,219 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:43:43,219 INFO ]: Finished difference Result 11 states and 22 transitions. [2018-06-24 20:43:43,220 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:43:43,220 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 20:43:43,220 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:43:43,220 INFO ]: With dead ends: 11 [2018-06-24 20:43:43,220 INFO ]: Without dead ends: 11 [2018-06-24 20:43:43,221 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:43:43,221 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 20:43:43,222 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-06-24 20:43:43,222 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-24 20:43:43,223 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 19 transitions. [2018-06-24 20:43:43,223 INFO ]: Start accepts. Automaton has 10 states and 19 transitions. Word has length 6 [2018-06-24 20:43:43,223 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:43:43,223 INFO ]: Abstraction has 10 states and 19 transitions. [2018-06-24 20:43:43,223 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:43:43,223 INFO ]: Start isEmpty. Operand 10 states and 19 transitions. [2018-06-24 20:43:43,224 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:43:43,224 INFO ]: Found error trace [2018-06-24 20:43:43,224 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:43:43,224 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:43:43,224 INFO ]: Analyzing trace with hash 1141783507, now seen corresponding path program 1 times [2018-06-24 20:43:43,224 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:43:43,224 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:43:43,225 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:43,225 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:43,225 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:43,254 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:43,325 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:43:43,325 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:43:43,325 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:43:43,331 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:43,401 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:43,405 INFO ]: Computing forward predicates... [2018-06-24 20:43:43,496 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:43:43,515 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 20:43:43,516 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-06-24 20:43:43,516 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:43:43,516 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:43:43,516 INFO ]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:43:43,516 INFO ]: Start difference. First operand 10 states and 19 transitions. Second operand 5 states. [2018-06-24 20:43:43,644 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:43:43,644 INFO ]: Finished difference Result 11 states and 18 transitions. [2018-06-24 20:43:43,644 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 20:43:43,644 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 20:43:43,644 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:43:43,644 INFO ]: With dead ends: 11 [2018-06-24 20:43:43,644 INFO ]: Without dead ends: 9 [2018-06-24 20:43:43,645 INFO ]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-24 20:43:43,645 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-24 20:43:43,646 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-24 20:43:43,646 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:43:43,646 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 15 transitions. [2018-06-24 20:43:43,646 INFO ]: Start accepts. Automaton has 9 states and 15 transitions. Word has length 6 [2018-06-24 20:43:43,646 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:43:43,646 INFO ]: Abstraction has 9 states and 15 transitions. [2018-06-24 20:43:43,646 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:43:43,646 INFO ]: Start isEmpty. Operand 9 states and 15 transitions. [2018-06-24 20:43:43,647 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 20:43:43,647 INFO ]: Found error trace [2018-06-24 20:43:43,647 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-06-24 20:43:43,647 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:43:43,647 INFO ]: Analyzing trace with hash 1088905942, now seen corresponding path program 1 times [2018-06-24 20:43:43,647 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:43:43,647 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:43:43,648 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:43,648 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:43:43,648 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:43:43,668 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:43:43,757 INFO ]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-24 20:43:43,757 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:43:43,757 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:43:43,757 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:43:43,757 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:43:43,757 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:43:43,757 INFO ]: Start difference. First operand 9 states and 15 transitions. Second operand 3 states. [2018-06-24 20:43:43,811 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:43:43,811 INFO ]: Finished difference Result 4 states and 4 transitions. [2018-06-24 20:43:43,811 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:43:43,811 INFO ]: Start accepts. Automaton has 3 states. Word has length 8 [2018-06-24 20:43:43,811 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:43:43,811 INFO ]: With dead ends: 4 [2018-06-24 20:43:43,811 INFO ]: Without dead ends: 0 [2018-06-24 20:43:43,812 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:43:43,812 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 20:43:43,812 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 20:43:43,812 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 20:43:43,812 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 20:43:43,812 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-24 20:43:43,812 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:43:43,812 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 20:43:43,812 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:43:43,812 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 20:43:43,812 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 20:43:43,814 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:43:43,816 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:43:43 BasicIcfg [2018-06-24 20:43:43,816 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:43:43,816 INFO ]: Toolchain (without parser) took 3472.74 ms. Allocated memory was 307.8 MB in the beginning and 324.0 MB in the end (delta: 16.3 MB). Free memory was 252.2 MB in the beginning and 186.7 MB in the end (delta: 65.4 MB). Peak memory consumption was 81.7 MB. Max. memory is 3.6 GB. [2018-06-24 20:43:43,818 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:43:43,818 INFO ]: ChcToBoogie took 83.64 ms. Allocated memory is still 307.8 MB. Free memory was 252.2 MB in the beginning and 249.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:43:43,818 INFO ]: Boogie Preprocessor took 61.07 ms. Allocated memory is still 307.8 MB. Free memory was 249.2 MB in the beginning and 248.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. [2018-06-24 20:43:43,819 INFO ]: RCFGBuilder took 599.52 ms. Allocated memory is still 307.8 MB. Free memory was 248.2 MB in the beginning and 223.1 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 3.6 GB. [2018-06-24 20:43:43,819 INFO ]: BlockEncodingV2 took 730.20 ms. Allocated memory was 307.8 MB in the beginning and 324.0 MB in the end (delta: 16.3 MB). Free memory was 223.1 MB in the beginning and 277.3 MB in the end (delta: -54.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 3.6 GB. [2018-06-24 20:43:43,820 INFO ]: TraceAbstraction took 1984.35 ms. Allocated memory is still 324.0 MB. Free memory was 277.3 MB in the beginning and 186.7 MB in the end (delta: 90.5 MB). Peak memory consumption was 90.5 MB. Max. memory is 3.6 GB. [2018-06-24 20:43:43,823 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 34 locations, 37 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 307.8 MB. Free memory is still 273.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 83.64 ms. Allocated memory is still 307.8 MB. Free memory was 252.2 MB in the beginning and 249.2 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 61.07 ms. Allocated memory is still 307.8 MB. Free memory was 249.2 MB in the beginning and 248.2 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 3.6 GB. * RCFGBuilder took 599.52 ms. Allocated memory is still 307.8 MB. Free memory was 248.2 MB in the beginning and 223.1 MB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 730.20 ms. Allocated memory was 307.8 MB in the beginning and 324.0 MB in the end (delta: 16.3 MB). Free memory was 223.1 MB in the beginning and 277.3 MB in the end (delta: -54.1 MB). Peak memory consumption was 42.3 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1984.35 ms. Allocated memory is still 324.0 MB. Free memory was 277.3 MB in the beginning and 186.7 MB in the end (delta: 90.5 MB). Peak memory consumption was 90.5 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, 1.9s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 22 SDs, 0 SdLazy, 56 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 306 SizeOfPredicates, 54 NumberOfNonLiveVariables, 831 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 8/10 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/37.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-43-43-834.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/37.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-43-43-834.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/37.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-43-43-834.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/37.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-43-43-834.csv Received shutdown request...