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/llreve-bench/smt2/faulty__limit1!.smt2' -------------------------------------------------------------------------------- This is Ultimate 0.1.23-62c3406-m [2018-06-26 18:41:41,775 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-26 18:41:41,777 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-26 18:41:41,789 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-26 18:41:41,790 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-26 18:41:41,791 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-26 18:41:41,792 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-26 18:41:41,794 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-26 18:41:41,795 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-26 18:41:41,796 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-26 18:41:41,797 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-26 18:41:41,797 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-26 18:41:41,798 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-26 18:41:41,799 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-26 18:41:41,800 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-26 18:41:41,800 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-26 18:41:41,801 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-26 18:41:41,803 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-26 18:41:41,805 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-26 18:41:41,806 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-26 18:41:41,807 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-26 18:41:41,808 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-26 18:41:41,811 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-26 18:41:41,811 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-26 18:41:41,811 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-26 18:41:41,812 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-26 18:41:41,813 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-26 18:41:41,814 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-26 18:41:41,814 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-26 18:41:41,815 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-26 18:41:41,816 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-26 18:41:41,816 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-26 18:41:41,817 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-06-26 18:41:41,817 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-26 18:41:41,818 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-26 18:41:41,818 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-26 18:41:41,819 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-26 18:41:41,832 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-26 18:41:41,832 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-26 18:41:41,833 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-26 18:41:41,833 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-26 18:41:41,834 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-26 18:41:41,834 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-26 18:41:41,834 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-26 18:41:41,834 INFO L133 SettingsManager]: * Use SBE=true [2018-06-26 18:41:41,835 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-26 18:41:41,835 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-26 18:41:41,835 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-26 18:41:41,835 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-26 18:41:41,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-26 18:41:41,836 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-26 18:41:41,836 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-26 18:41:41,836 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-26 18:41:41,836 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-26 18:41:41,836 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-26 18:41:41,837 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-26 18:41:41,837 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-26 18:41:41,837 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-26 18:41:41,838 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-26 18:41:41,839 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-26 18:41:41,879 INFO ]: Repository-Root is: /tmp [2018-06-26 18:41:41,894 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-26 18:41:41,897 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-26 18:41:41,898 INFO ]: Initializing SmtParser... [2018-06-26 18:41:41,898 INFO ]: SmtParser initialized [2018-06-26 18:41:41,898 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/faulty__limit1!.smt2 [2018-06-26 18:41:41,899 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 18:41:41,986 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/faulty__limit1!.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@2373fc20 [2018-06-26 18:41:42,246 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/faulty__limit1!.smt2 [2018-06-26 18:41:42,251 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-26 18:41:42,259 INFO ]: Walking toolchain with 5 elements. [2018-06-26 18:41:42,259 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-26 18:41:42,259 INFO ]: Initializing ChcToBoogie... [2018-06-26 18:41:42,260 INFO ]: ChcToBoogie initialized [2018-06-26 18:41:42,263 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:41:42" (1/1) ... [2018-06-26 18:41:42,313 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:42 Unit [2018-06-26 18:41:42,313 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-26 18:41:42,313 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-26 18:41:42,314 INFO ]: Initializing Boogie Preprocessor... [2018-06-26 18:41:42,314 INFO ]: Boogie Preprocessor initialized [2018-06-26 18:41:42,334 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:42" (1/1) ... [2018-06-26 18:41:42,334 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:42" (1/1) ... [2018-06-26 18:41:42,340 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:42" (1/1) ... [2018-06-26 18:41:42,340 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:42" (1/1) ... [2018-06-26 18:41:42,346 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:42" (1/1) ... [2018-06-26 18:41:42,350 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:42" (1/1) ... [2018-06-26 18:41:42,351 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:42" (1/1) ... [2018-06-26 18:41:42,353 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-26 18:41:42,353 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-26 18:41:42,353 INFO ]: Initializing RCFGBuilder... [2018-06-26 18:41:42,353 INFO ]: RCFGBuilder initialized [2018-06-26 18:41:42,354 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:42" (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 18:41:42,375 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-26 18:41:42,375 INFO ]: Found specification of procedure gotoProc [2018-06-26 18:41:42,375 INFO ]: Found implementation of procedure gotoProc [2018-06-26 18:41:42,375 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-26 18:41:42,375 INFO ]: Found specification of procedure Ultimate.START [2018-06-26 18:41:42,375 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 18:41:42,786 INFO ]: Using library mode [2018-06-26 18:41:42,786 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:41:42 BoogieIcfgContainer [2018-06-26 18:41:42,786 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-26 18:41:42,787 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-26 18:41:42,787 INFO ]: Initializing BlockEncodingV2... [2018-06-26 18:41:42,788 INFO ]: BlockEncodingV2 initialized [2018-06-26 18:41:42,788 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:41:42" (1/1) ... [2018-06-26 18:41:42,808 INFO ]: Initial Icfg 28 locations, 48 edges [2018-06-26 18:41:42,810 INFO ]: Using Remove infeasible edges [2018-06-26 18:41:42,810 INFO ]: Using Maximize final states [2018-06-26 18:41:42,811 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-26 18:41:42,811 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-26 18:41:42,813 INFO ]: Using Remove sink states [2018-06-26 18:41:42,813 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-26 18:41:42,813 INFO ]: Using Use SBE [2018-06-26 18:41:42,821 INFO ]: SBE split 0 edges [2018-06-26 18:41:42,826 INFO ]: Removed 7 edges and 2 locations because of local infeasibility [2018-06-26 18:41:42,827 INFO ]: 0 new accepting states [2018-06-26 18:41:42,915 INFO ]: Removed 21 edges and 7 locations by large block encoding [2018-06-26 18:41:42,918 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:41:42,920 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-26 18:41:42,920 INFO ]: 0 new accepting states [2018-06-26 18:41:42,920 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-26 18:41:42,920 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-26 18:41:42,921 INFO ]: Encoded RCFG 19 locations, 36 edges [2018-06-26 18:41:42,921 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:41:42 BasicIcfg [2018-06-26 18:41:42,921 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-26 18:41:42,922 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-26 18:41:42,922 INFO ]: Initializing TraceAbstraction... [2018-06-26 18:41:42,926 INFO ]: TraceAbstraction initialized [2018-06-26 18:41:42,927 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 26.06 06:41:42" (1/4) ... [2018-06-26 18:41:42,927 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e66902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 26.06 06:41:42, skipping insertion in model container [2018-06-26 18:41:42,928 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 26.06 06:41:42" (2/4) ... [2018-06-26 18:41:42,928 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e66902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.06 06:41:42, skipping insertion in model container [2018-06-26 18:41:42,928 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.06 06:41:42" (3/4) ... [2018-06-26 18:41:42,928 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e66902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:41:42, skipping insertion in model container [2018-06-26 18:41:42,928 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 26.06 06:41:42" (4/4) ... [2018-06-26 18:41:42,933 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-26 18:41:42,940 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-26 18:41:42,948 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-26 18:41:42,987 INFO ]: Using default assertion order modulation [2018-06-26 18:41:42,988 INFO ]: Interprodecural is true [2018-06-26 18:41:42,988 INFO ]: Hoare is false [2018-06-26 18:41:42,988 INFO ]: Compute interpolants for FPandBP [2018-06-26 18:41:42,988 INFO ]: Backedges is TWOTRACK [2018-06-26 18:41:42,988 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-26 18:41:42,988 INFO ]: Difference is false [2018-06-26 18:41:42,988 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-26 18:41:42,988 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-26 18:41:43,005 INFO ]: Start isEmpty. Operand 19 states. [2018-06-26 18:41:43,030 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-26 18:41:43,030 INFO ]: Found error trace [2018-06-26 18:41:43,031 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-26 18:41:43,031 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:41:43,036 INFO ]: Analyzing trace with hash 42175910, now seen corresponding path program 1 times [2018-06-26 18:41:43,038 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:41:43,038 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:41:43,070 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:43,070 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:41:43,070 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:43,101 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:41:43,152 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:41:43,154 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:41:43,154 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:41:43,155 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:41:43,165 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:41:43,166 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:41:43,167 INFO ]: Start difference. First operand 19 states. Second operand 3 states. [2018-06-26 18:41:43,442 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:41:43,443 INFO ]: Finished difference Result 35 states and 68 transitions. [2018-06-26 18:41:43,444 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:41:43,445 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-26 18:41:43,446 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:41:43,456 INFO ]: With dead ends: 35 [2018-06-26 18:41:43,456 INFO ]: Without dead ends: 35 [2018-06-26 18:41:43,458 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 18:41:43,470 INFO ]: Start minimizeSevpa. Operand 35 states. [2018-06-26 18:41:43,497 INFO ]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-06-26 18:41:43,498 INFO ]: Start removeUnreachable. Operand 35 states. [2018-06-26 18:41:43,501 INFO ]: Finished removeUnreachable. Reduced from 35 states to 35 states and 68 transitions. [2018-06-26 18:41:43,502 INFO ]: Start accepts. Automaton has 35 states and 68 transitions. Word has length 5 [2018-06-26 18:41:43,503 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:41:43,503 INFO ]: Abstraction has 35 states and 68 transitions. [2018-06-26 18:41:43,503 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:41:43,503 INFO ]: Start isEmpty. Operand 35 states and 68 transitions. [2018-06-26 18:41:43,504 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:41:43,504 INFO ]: Found error trace [2018-06-26 18:41:43,504 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:41:43,504 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:41:43,504 INFO ]: Analyzing trace with hash 1309604214, now seen corresponding path program 1 times [2018-06-26 18:41:43,504 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:41:43,504 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:41:43,505 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:43,505 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:41:43,505 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:43,511 INFO ]: Conjunction of SSA is unsat [2018-06-26 18:41:43,535 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-26 18:41:43,535 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-26 18:41:43,535 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-26 18:41:43,536 INFO ]: Interpolant automaton has 3 states [2018-06-26 18:41:43,536 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-26 18:41:43,536 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-26 18:41:43,536 INFO ]: Start difference. First operand 35 states and 68 transitions. Second operand 3 states. [2018-06-26 18:41:43,698 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-26 18:41:43,698 INFO ]: Finished difference Result 51 states and 101 transitions. [2018-06-26 18:41:43,700 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-26 18:41:43,700 INFO ]: Start accepts. Automaton has 3 states. Word has length 6 [2018-06-26 18:41:43,700 INFO ]: Finished accepts. some prefix is accepted. [2018-06-26 18:41:43,702 INFO ]: With dead ends: 51 [2018-06-26 18:41:43,702 INFO ]: Without dead ends: 51 [2018-06-26 18:41:43,702 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 18:41:43,703 INFO ]: Start minimizeSevpa. Operand 51 states. [2018-06-26 18:41:43,716 INFO ]: Finished minimizeSevpa. Reduced states from 51 to 51. [2018-06-26 18:41:43,716 INFO ]: Start removeUnreachable. Operand 51 states. [2018-06-26 18:41:43,718 INFO ]: Finished removeUnreachable. Reduced from 51 states to 51 states and 101 transitions. [2018-06-26 18:41:43,719 INFO ]: Start accepts. Automaton has 51 states and 101 transitions. Word has length 6 [2018-06-26 18:41:43,721 INFO ]: Finished accepts. word is rejected. [2018-06-26 18:41:43,721 INFO ]: Abstraction has 51 states and 101 transitions. [2018-06-26 18:41:43,721 INFO ]: Interpolant automaton has 3 states. [2018-06-26 18:41:43,721 INFO ]: Start isEmpty. Operand 51 states and 101 transitions. [2018-06-26 18:41:43,723 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-26 18:41:43,723 INFO ]: Found error trace [2018-06-26 18:41:43,723 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-26 18:41:43,723 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-26 18:41:43,723 INFO ]: Analyzing trace with hash 1311272510, now seen corresponding path program 1 times [2018-06-26 18:41:43,723 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-26 18:41:43,723 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-26 18:41:43,724 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:43,724 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-26 18:41:43,724 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-26 18:41:43,748 INFO ]: Conjunction of SSA is sat [2018-06-26 18:41:43,750 INFO ]: Counterexample might be feasible [2018-06-26 18:41:43,767 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-26 18:41:43,768 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.06 06:41:43 BasicIcfg [2018-06-26 18:41:43,769 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-26 18:41:43,770 INFO ]: Toolchain (without parser) took 1518.66 ms. Allocated memory is still 308.3 MB. Free memory was 262.6 MB in the beginning and 208.7 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 3.6 GB. [2018-06-26 18:41:43,771 INFO ]: SmtParser took 0.04 ms. Allocated memory is still 308.3 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-26 18:41:43,772 INFO ]: ChcToBoogie took 53.80 ms. Allocated memory is still 308.3 MB. Free memory was 262.6 MB in the beginning and 260.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:41:43,772 INFO ]: Boogie Preprocessor took 39.10 ms. Allocated memory is still 308.3 MB. Free memory was 260.6 MB in the beginning and 258.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:41:43,773 INFO ]: RCFGBuilder took 433.09 ms. Allocated memory is still 308.3 MB. Free memory was 258.7 MB in the beginning and 246.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:41:43,773 INFO ]: BlockEncodingV2 took 134.30 ms. Allocated memory is still 308.3 MB. Free memory was 246.7 MB in the beginning and 240.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:41:43,774 INFO ]: TraceAbstraction took 846.90 ms. Allocated memory is still 308.3 MB. Free memory was 240.7 MB in the beginning and 208.7 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. [2018-06-26 18:41:43,779 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 28 locations, 48 edges - StatisticsResult: Encoded RCFG 19 locations, 36 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.04 ms. Allocated memory is still 308.3 MB. Free memory is still 272.7 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 53.80 ms. Allocated memory is still 308.3 MB. Free memory was 262.6 MB in the beginning and 260.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 39.10 ms. Allocated memory is still 308.3 MB. Free memory was 260.6 MB in the beginning and 258.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 433.09 ms. Allocated memory is still 308.3 MB. Free memory was 258.7 MB in the beginning and 246.7 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 134.30 ms. Allocated memory is still 308.3 MB. Free memory was 246.7 MB in the beginning and 240.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 846.90 ms. Allocated memory is still 308.3 MB. Free memory was 240.7 MB in the beginning and 208.7 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [UNKNOWN] : assertion can be violated assertion can be violated We found a FailurePath: [L0] CALL call gotoProc(0, 0, 0, 0, 0); [L0] assume ((!(hbv_False_2_Int <= 1) && !(hbv_False_1_Int + hbv_False_3_Int == hbv_False_2_Int + (hbv_False_2_Int - 1) + hbv_False_4_Int)) && !(hbv_False_1_Int <= 1)) && hbv_False_1_Int == hbv_False_2_Int; [L0] hhv_INV_REC_f^f_0_Int, hhv_INV_REC_f^f_1_Int, hhv_INV_REC_f^f_2_Int, hhv_INV_REC_f^f_3_Int := hbv_False_1_Int - 1, hbv_False_2_Int - 3, hbv_False_3_Int, hbv_False_4_Int; [L0] havoc hbv_False_3_Int, hbv_False_1_Int, hbv_False_2_Int, hbv_False_4_Int; [L0] assume ((hhv_INV_REC_f^f_0_Int <= 1 && hhv_INV_REC_f^f_3_Int == hhv_INV_REC_f^f_1_Int) && hhv_INV_REC_f^f_2_Int == hhv_INV_REC_f^f_0_Int) && hhv_INV_REC_f^f_1_Int <= 1; [L0] hhv_INV_REC_f^f_PRE_0_Int, hhv_INV_REC_f^f_PRE_1_Int := hhv_INV_REC_f^f_0_Int, hhv_INV_REC_f^f_1_Int; [L0] RET call gotoProc(0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.7s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 95 SDtfs, 37 SDslu, 43 SDs, 0 SdLazy, 41 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 87 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__limit1!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-26_18-41-43-799.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__limit1!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-26_18-41-43-799.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__limit1!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-26_18-41-43-799.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/faulty__limit1!.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-26_18-41-43-799.csv Received shutdown request...