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/44.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 17:45:50,848 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 17:45:50,849 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 17:45:50,863 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 17:45:50,863 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 17:45:50,865 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 17:45:50,866 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 17:45:50,871 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 17:45:50,872 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 17:45:50,873 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 17:45:50,874 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 17:45:50,874 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 17:45:50,875 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 17:45:50,877 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 17:45:50,878 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 17:45:50,879 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 17:45:50,879 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 17:45:50,881 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 17:45:50,883 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 17:45:50,886 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 17:45:50,887 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 17:45:50,888 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 17:45:50,894 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 17:45:50,894 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 17:45:50,894 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 17:45:50,895 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 17:45:50,896 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 17:45:50,897 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 17:45:50,901 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 17:45:50,902 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 17:45:50,902 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 17:45:50,903 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 17:45:50,903 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 17:45:50,903 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 17:45:50,904 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 17:45:50,905 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 17:45:50,905 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 17:45:50,931 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 17:45:50,931 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 17:45:50,932 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 17:45:50,932 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 17:45:50,933 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 17:45:50,933 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 17:45:50,933 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 17:45:50,933 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 17:45:50,934 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 17:45:50,934 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 17:45:50,934 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 17:45:50,934 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 17:45:50,934 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:45:50,935 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 17:45:50,935 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 17:45:50,935 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 17:45:50,935 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 17:45:50,935 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 17:45:50,936 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 17:45:50,936 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 17:45:50,936 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 17:45:50,938 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 17:45:50,938 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 17:45:50,985 INFO ]: Repository-Root is: /tmp [2018-06-26 17:45:51,001 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 17:45:51,006 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 17:45:51,008 INFO ]: Initializing SmtParser... [2018-06-26 17:45:51,008 INFO ]: SmtParser initialized [2018-06-26 17:45:51,008 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/44.c.smt2 [2018-06-26 17:45:51,010 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 17:45:51,095 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/44.c.smt2 unknown [2018-06-26 17:45:51,610 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/44.c.smt2 [2018-06-26 17:45:51,615 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 17:45:51,622 INFO ]: Walking toolchain with 5 elements. [2018-06-26 17:45:51,622 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 17:45:51,622 INFO ]: Initializing ChcToBoogie... [2018-06-26 17:45:51,622 INFO ]: ChcToBoogie initialized [2018-06-26 17:45:51,626 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:45:51" (1/1) ... [2018-06-26 17:45:51,689 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:51 Unit [2018-06-26 17:45:51,689 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 17:45:51,698 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 17:45:51,698 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 17:45:51,698 INFO ]: Boogie Preprocessor initialized [2018-06-26 17:45:51,722 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:51" (1/1) ... [2018-06-26 17:45:51,722 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:51" (1/1) ... [2018-06-26 17:45:51,730 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:51" (1/1) ... [2018-06-26 17:45:51,730 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:51" (1/1) ... [2018-06-26 17:45:51,737 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:51" (1/1) ... [2018-06-26 17:45:51,740 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:51" (1/1) ... [2018-06-26 17:45:51,741 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:51" (1/1) ... [2018-06-26 17:45:51,745 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 17:45:51,745 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 17:45:51,745 INFO ]: Initializing RCFGBuilder... [2018-06-26 17:45:51,745 INFO ]: RCFGBuilder initialized [2018-06-26 17:45:51,746 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:51" (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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 17:45:51,762 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 17:45:51,762 INFO ]: Found specification of procedure gotoProc [2018-06-26 17:45:51,762 INFO ]: Found implementation of procedure gotoProc [2018-06-26 17:45:51,762 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 17:45:51,762 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 17:45:51,762 INFO ]: Found implementation of procedure Ultimate.START [2018-06-26 17:45:52,499 INFO ]: Using library mode [2018-06-26 17:45:52,499 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:45:52 BoogieIcfgContainer [2018-06-26 17:45:52,499 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 17:45:52,500 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 17:45:52,500 INFO ]: Initializing BlockEncodingV2... [2018-06-26 17:45:52,502 INFO ]: BlockEncodingV2 initialized [2018-06-26 17:45:52,503 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:45:52" (1/1) ... [2018-06-26 17:45:52,522 INFO ]: Initial Icfg 32 locations, 35 edges [2018-06-26 17:45:52,523 INFO ]: Using Remove infeasible edges [2018-06-26 17:45:52,523 INFO ]: Using Maximize final states [2018-06-26 17:45:52,524 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 17:45:52,524 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 17:45:52,527 INFO ]: Using Remove sink states [2018-06-26 17:45:52,528 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 17:45:52,528 INFO ]: Using Use SBE [2018-06-26 17:45:52,543 INFO ]: SBE split 0 edges [2018-06-26 17:45:52,550 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-26 17:45:52,554 INFO ]: 0 new accepting states [2018-06-26 17:45:53,532 INFO ]: Removed 67 edges and 24 locations by large block encoding [2018-06-26 17:45:53,534 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:45:53,535 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 17:45:53,535 INFO ]: 0 new accepting states [2018-06-26 17:45:53,535 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 17:45:53,536 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 17:45:53,538 INFO ]: Encoded RCFG 6 locations, 9 edges [2018-06-26 17:45:53,538 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:45:53 BasicIcfg [2018-06-26 17:45:53,538 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 17:45:53,540 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 17:45:53,540 INFO ]: Initializing TraceAbstraction... [2018-06-26 17:45:53,545 INFO ]: TraceAbstraction initialized [2018-06-26 17:45:53,545 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 05:45:51" (1/4) ... [2018-06-26 17:45:53,546 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb520c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 05:45:53, skipping insertion in model container [2018-06-26 17:45:53,546 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 05:45:51" (2/4) ... [2018-06-26 17:45:53,546 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb520c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 05:45:53, skipping insertion in model container [2018-06-26 17:45:53,546 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 05:45:52" (3/4) ... [2018-06-26 17:45:53,547 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb520c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:45:53, skipping insertion in model container [2018-06-26 17:45:53,547 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 05:45:53" (4/4) ... [2018-06-26 17:45:53,550 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 17:45:53,565 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 17:45:53,584 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 17:45:53,627 INFO ]: Using default assertion order modulation [2018-06-26 17:45:53,628 INFO ]: Interprodecural is true [2018-06-26 17:45:53,628 INFO ]: Hoare is false [2018-06-26 17:45:53,628 INFO ]: Compute interpolants for FPandBP [2018-06-26 17:45:53,628 INFO ]: Backedges is TWOTRACK [2018-06-26 17:45:53,628 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 17:45:53,628 INFO ]: Difference is false [2018-06-26 17:45:53,628 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 17:45:53,628 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 17:45:53,640 INFO ]: Start isEmpty. Operand 6 states. [2018-06-26 17:45:53,650 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 17:45:53,650 INFO ]: Found error trace [2018-06-26 17:45:53,651 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 17:45:53,651 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:45:53,656 INFO ]: Analyzing trace with hash 38533341, now seen corresponding path program 1 times [2018-06-26 17:45:53,658 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:45:53,658 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:45:53,693 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:53,693 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:53,693 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:53,779 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:53,923 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:53,930 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:45:53,930 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:45:53,932 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:45:53,948 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:45:53,949 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:45:53,951 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-26 17:45:54,094 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:45:54,094 INFO ]: Finished difference Result 7 states and 10 transitions. [2018-06-26 17:45:54,095 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:45:54,096 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 17:45:54,096 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:45:54,105 INFO ]: With dead ends: 7 [2018-06-26 17:45:54,105 INFO ]: Without dead ends: 7 [2018-06-26 17:45:54,107 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 17:45:54,124 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-26 17:45:54,140 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-26 17:45:54,141 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-26 17:45:54,142 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-06-26 17:45:54,143 INFO ]: Start accepts. Automaton has 7 states and 10 transitions. Word has length 5 [2018-06-26 17:45:54,143 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:45:54,143 INFO ]: Abstraction has 7 states and 10 transitions. [2018-06-26 17:45:54,143 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:45:54,143 INFO ]: Start isEmpty. Operand 7 states and 10 transitions. [2018-06-26 17:45:54,144 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:45:54,144 INFO ]: Found error trace [2018-06-26 17:45:54,144 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:45:54,144 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:45:54,144 INFO ]: Analyzing trace with hash 1193977276, now seen corresponding path program 1 times [2018-06-26 17:45:54,144 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:45:54,144 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:45:54,145 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:54,145 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:54,145 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:54,201 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:54,417 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:54,417 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:45:54,417 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 17:45:54,425 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:54,565 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:54,583 INFO ]: Computing forward predicates... [2018-06-26 17:45:54,834 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:54,869 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:45:54,869 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-06-26 17:45:54,870 INFO ]: Interpolant automaton has 6 states [2018-06-26 17:45:54,870 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-26 17:45:54,870 INFO ]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-06-26 17:45:54,870 INFO ]: Start difference. First operand 7 states and 10 transitions. Second operand 6 states. [2018-06-26 17:45:55,136 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:45:55,137 INFO ]: Finished difference Result 11 states and 18 transitions. [2018-06-26 17:45:55,137 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:45:55,137 INFO ]: Start accepts. Automaton has 6 states. Word has length 6 [2018-06-26 17:45:55,138 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:45:55,141 INFO ]: With dead ends: 11 [2018-06-26 17:45:55,141 INFO ]: Without dead ends: 11 [2018-06-26 17:45:55,142 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-06-26 17:45:55,144 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-26 17:45:55,147 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-06-26 17:45:55,147 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-26 17:45:55,147 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 17 transitions. [2018-06-26 17:45:55,147 INFO ]: Start accepts. Automaton has 10 states and 17 transitions. Word has length 6 [2018-06-26 17:45:55,147 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:45:55,147 INFO ]: Abstraction has 10 states and 17 transitions. [2018-06-26 17:45:55,147 INFO ]: Interpolant automaton has 6 states. [2018-06-26 17:45:55,147 INFO ]: Start isEmpty. Operand 10 states and 17 transitions. [2018-06-26 17:45:55,148 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:45:55,148 INFO ]: Found error trace [2018-06-26 17:45:55,148 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:45:55,148 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:45:55,148 INFO ]: Analyzing trace with hash 1193978237, now seen corresponding path program 1 times [2018-06-26 17:45:55,148 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:45:55,148 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:45:55,149 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:55,149 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:55,149 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:55,187 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:55,266 INFO ]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 17:45:55,266 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 17:45:55,266 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 17:45:55,266 INFO ]: Interpolant automaton has 3 states [2018-06-26 17:45:55,267 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 17:45:55,267 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 17:45:55,267 INFO ]: Start difference. First operand 10 states and 17 transitions. Second operand 3 states. [2018-06-26 17:45:55,303 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:45:55,303 INFO ]: Finished difference Result 10 states and 11 transitions. [2018-06-26 17:45:55,304 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 17:45:55,304 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 17:45:55,304 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:45:55,304 INFO ]: With dead ends: 10 [2018-06-26 17:45:55,304 INFO ]: Without dead ends: 10 [2018-06-26 17:45:55,305 INFO ]: 0 DeclaredPredicates, 4 GetRequests, 3 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 17:45:55,305 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-26 17:45:55,306 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-06-26 17:45:55,306 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:45:55,306 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-06-26 17:45:55,306 INFO ]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-06-26 17:45:55,306 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:45:55,306 INFO ]: Abstraction has 9 states and 10 transitions. [2018-06-26 17:45:55,306 INFO ]: Interpolant automaton has 3 states. [2018-06-26 17:45:55,306 INFO ]: Start isEmpty. Operand 9 states and 10 transitions. [2018-06-26 17:45:55,307 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 17:45:55,307 INFO ]: Found error trace [2018-06-26 17:45:55,307 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 17:45:55,307 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:45:55,307 INFO ]: Analyzing trace with hash 1195824318, now seen corresponding path program 1 times [2018-06-26 17:45:55,307 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:45:55,307 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:45:55,308 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:55,308 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:55,308 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:55,330 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:55,660 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:55,660 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:45:55,660 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 17:45:55,672 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:55,763 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:55,770 INFO ]: Computing forward predicates... [2018-06-26 17:45:55,890 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:55,914 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:45:55,914 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-26 17:45:55,914 INFO ]: Interpolant automaton has 5 states [2018-06-26 17:45:55,914 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-26 17:45:55,914 INFO ]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:45:55,914 INFO ]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states. [2018-06-26 17:45:55,934 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:45:55,934 INFO ]: Finished difference Result 12 states and 13 transitions. [2018-06-26 17:45:55,934 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-26 17:45:55,934 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-26 17:45:55,934 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:45:55,934 INFO ]: With dead ends: 12 [2018-06-26 17:45:55,934 INFO ]: Without dead ends: 12 [2018-06-26 17:45:55,935 INFO ]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-26 17:45:55,935 INFO ]: Start minimizeSevpa. Operand 12 states. [2018-06-26 17:45:55,936 INFO ]: Finished minimizeSevpa. Reduced states from 12 to 9. [2018-06-26 17:45:55,936 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:45:55,936 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2018-06-26 17:45:55,936 INFO ]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2018-06-26 17:45:55,936 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:45:55,936 INFO ]: Abstraction has 9 states and 10 transitions. [2018-06-26 17:45:55,937 INFO ]: Interpolant automaton has 5 states. [2018-06-26 17:45:55,937 INFO ]: Start isEmpty. Operand 9 states and 10 transitions. [2018-06-26 17:45:55,937 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 17:45:55,937 INFO ]: Found error trace [2018-06-26 17:45:55,937 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-26 17:45:55,937 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:45:55,937 INFO ]: Analyzing trace with hash 638092764, now seen corresponding path program 2 times [2018-06-26 17:45:55,937 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:45:55,937 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:45:55,938 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:55,938 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 17:45:55,938 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:55,972 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:56,051 INFO ]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 17:45:56,051 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:45:56,051 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 17:45:56,057 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 17:45:56,195 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 17:45:56,195 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:56,199 INFO ]: Computing forward predicates... [2018-06-26 17:45:56,305 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:56,325 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:45:56,325 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2018-06-26 17:45:56,325 INFO ]: Interpolant automaton has 9 states [2018-06-26 17:45:56,325 INFO ]: Constructing interpolant automaton starting with 9 interpolants. [2018-06-26 17:45:56,325 INFO ]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-06-26 17:45:56,326 INFO ]: Start difference. First operand 9 states and 10 transitions. Second operand 9 states. [2018-06-26 17:45:56,461 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:45:56,461 INFO ]: Finished difference Result 14 states and 15 transitions. [2018-06-26 17:45:56,462 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-26 17:45:56,462 INFO ]: Start accepts. Automaton has 9 states. Word has length 8 [2018-06-26 17:45:56,462 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:45:56,462 INFO ]: With dead ends: 14 [2018-06-26 17:45:56,462 INFO ]: Without dead ends: 9 [2018-06-26 17:45:56,462 INFO ]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-06-26 17:45:56,462 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-26 17:45:56,463 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-26 17:45:56,463 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-26 17:45:56,464 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2018-06-26 17:45:56,464 INFO ]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2018-06-26 17:45:56,464 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:45:56,464 INFO ]: Abstraction has 9 states and 9 transitions. [2018-06-26 17:45:56,464 INFO ]: Interpolant automaton has 9 states. [2018-06-26 17:45:56,464 INFO ]: Start isEmpty. Operand 9 states and 9 transitions. [2018-06-26 17:45:56,464 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-26 17:45:56,464 INFO ]: Found error trace [2018-06-26 17:45:56,464 INFO ]: trace histogram [3, 1, 1, 1, 1, 1] [2018-06-26 17:45:56,464 INFO ]: === Iteration 6 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 17:45:56,464 INFO ]: Analyzing trace with hash -1881867170, now seen corresponding path program 2 times [2018-06-26 17:45:56,464 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 17:45:56,464 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 17:45:56,465 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:56,465 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-26 17:45:56,465 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 17:45:56,512 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:56,662 INFO ]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-06-26 17:45:56,662 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-26 17:45:56,662 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-26 17:45:56,672 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-26 17:45:56,783 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-26 17:45:56,783 INFO ]: Conjunction of SSA is unsat [2018-06-26 17:45:56,789 INFO ]: Computing forward predicates... [2018-06-26 17:45:57,113 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 17:45:57,133 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-26 17:45:57,133 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2018-06-26 17:45:57,134 INFO ]: Interpolant automaton has 8 states [2018-06-26 17:45:57,134 INFO ]: Constructing interpolant automaton starting with 8 interpolants. [2018-06-26 17:45:57,134 INFO ]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-26 17:45:57,134 INFO ]: Start difference. First operand 9 states and 9 transitions. Second operand 8 states. [2018-06-26 17:45:57,203 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 17:45:57,203 INFO ]: Finished difference Result 7 states and 7 transitions. [2018-06-26 17:45:57,204 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-26 17:45:57,204 INFO ]: Start accepts. Automaton has 8 states. Word has length 8 [2018-06-26 17:45:57,204 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 17:45:57,204 INFO ]: With dead ends: 7 [2018-06-26 17:45:57,204 INFO ]: Without dead ends: 0 [2018-06-26 17:45:57,204 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-06-26 17:45:57,204 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-26 17:45:57,204 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-26 17:45:57,204 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-26 17:45:57,204 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-26 17:45:57,204 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2018-06-26 17:45:57,204 INFO ]: Finished accepts. word is rejected. [2018-06-26 17:45:57,204 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-26 17:45:57,204 INFO ]: Interpolant automaton has 8 states. [2018-06-26 17:45:57,204 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-26 17:45:57,204 INFO ]: Finished isEmpty. No accepting run. [2018-06-26 17:45:57,207 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 17:45:57,209 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 05:45:57 BasicIcfg [2018-06-26 17:45:57,209 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 17:45:57,210 INFO ]: Toolchain (without parser) took 5594.34 ms. Allocated memory was 307.2 MB in the beginning and 337.6 MB in the end (delta: 30.4 MB). Free memory was 245.7 MB in the beginning and 231.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 44.6 MB. Max. memory is 3.6 GB. [2018-06-26 17:45:57,211 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 17:45:57,212 INFO ]: ChcToBoogie took 67.09 ms. Allocated memory is still 307.2 MB. Free memory was 245.7 MB in the beginning and 242.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:45:57,212 INFO ]: Boogie Preprocessor took 46.46 ms. Allocated memory is still 307.2 MB. Free memory was 242.7 MB in the beginning and 241.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. [2018-06-26 17:45:57,212 INFO ]: RCFGBuilder took 754.30 ms. Allocated memory is still 307.2 MB. Free memory was 241.6 MB in the beginning and 207.5 MB in the end (delta: 34.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 3.6 GB. [2018-06-26 17:45:57,213 INFO ]: BlockEncodingV2 took 1038.23 ms. Allocated memory is still 307.2 MB. Free memory was 207.5 MB in the beginning and 212.3 MB in the end (delta: -4.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 3.6 GB. [2018-06-26 17:45:57,213 INFO ]: TraceAbstraction took 3669.29 ms. Allocated memory was 307.2 MB in the beginning and 337.6 MB in the end (delta: 30.4 MB). Free memory was 211.1 MB in the beginning and 231.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 3.6 GB. [2018-06-26 17:45:57,216 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 32 locations, 35 edges - StatisticsResult: Encoded RCFG 6 locations, 9 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 307.2 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 67.09 ms. Allocated memory is still 307.2 MB. Free memory was 245.7 MB in the beginning and 242.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 46.46 ms. Allocated memory is still 307.2 MB. Free memory was 242.7 MB in the beginning and 241.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 754.30 ms. Allocated memory is still 307.2 MB. Free memory was 241.6 MB in the beginning and 207.5 MB in the end (delta: 34.2 MB). Peak memory consumption was 34.2 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 1038.23 ms. Allocated memory is still 307.2 MB. Free memory was 207.5 MB in the beginning and 212.3 MB in the end (delta: -4.8 MB). Peak memory consumption was 27.3 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3669.29 ms. Allocated memory was 307.2 MB in the beginning and 337.6 MB in the end (delta: 30.4 MB). Free memory was 211.1 MB in the beginning and 231.5 MB in the end (delta: -20.4 MB). Peak memory consumption was 10.0 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, 3.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 33 SDtfs, 3 SDslu, 43 SDs, 0 SdLazy, 101 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.2s 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, 6 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 57 ConstructedInterpolants, 2 QuantifiedInterpolants, 1641 SizeOfPredicates, 208 NumberOfNonLiveVariables, 2672 ConjunctsInSsa, 246 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 3/29 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/44.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_17-45-57-227.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/44.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_17-45-57-227.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/44.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_17-45-57-227.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/44.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_17-45-57-227.csv Received shutdown request...