java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC.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/quant/coreutils__md5sum.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-25 10:09:45,758 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-25 10:09:45,760 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-25 10:09:45,771 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-25 10:09:45,772 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-25 10:09:45,772 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-25 10:09:45,774 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-25 10:09:45,775 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-25 10:09:45,777 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-25 10:09:45,778 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-25 10:09:45,779 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-25 10:09:45,779 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-25 10:09:45,780 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-25 10:09:45,781 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-25 10:09:45,782 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-25 10:09:45,782 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-25 10:09:45,784 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-25 10:09:45,786 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-25 10:09:45,788 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-25 10:09:45,789 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-25 10:09:45,790 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-25 10:09:45,792 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-25 10:09:45,793 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-25 10:09:45,793 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-25 10:09:45,794 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-25 10:09:45,795 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-25 10:09:45,795 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-25 10:09:45,796 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-25 10:09:45,797 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-25 10:09:45,797 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-25 10:09:45,798 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-25 10:09:45,798 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-25 10:09:45,799 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-25 10:09:45,799 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-25 10:09:45,800 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-25 10:09:45,800 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-25 10:09:45,815 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-25 10:09:45,815 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-25 10:09:45,815 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-25 10:09:45,816 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-25 10:09:45,817 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-25 10:09:45,817 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-25 10:09:45,817 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-25 10:09:45,817 INFO L133 SettingsManager]: * Use SBE=true [2018-06-25 10:09:45,818 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-25 10:09:45,818 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-25 10:09:45,818 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-25 10:09:45,818 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-25 10:09:45,819 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-25 10:09:45,821 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-25 10:09:45,821 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-25 10:09:45,821 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-25 10:09:45,821 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-25 10:09:45,822 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-25 10:09:45,822 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-25 10:09:45,822 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-25 10:09:45,822 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-25 10:09:45,824 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-25 10:09:45,824 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-25 10:09:45,870 INFO ]: Repository-Root is: /tmp [2018-06-25 10:09:45,887 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-25 10:09:45,895 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-25 10:09:45,897 INFO ]: Initializing SmtParser... [2018-06-25 10:09:45,897 INFO ]: SmtParser initialized [2018-06-25 10:09:45,898 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/llreve-bench/smt2/quant/coreutils__md5sum.smt2 [2018-06-25 10:09:45,899 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 [2018-06-25 10:09:45,989 INFO ]: Executing SMT file /storage/chc-comp/llreve-bench/smt2/quant/coreutils__md5sum.smt2 unknown de.uni_freiburg.informatik.ultimate.plugins.generator.treeautomizer.parsing.HornClauseParserScript$1@704156d0 [2018-06-25 10:09:46,584 INFO ]: Succesfully executed SMT file /storage/chc-comp/llreve-bench/smt2/quant/coreutils__md5sum.smt2 [2018-06-25 10:09:46,590 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-25 10:09:46,596 INFO ]: Walking toolchain with 4 elements. [2018-06-25 10:09:46,597 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-25 10:09:46,597 INFO ]: Initializing ChcToBoogie... [2018-06-25 10:09:46,597 INFO ]: ChcToBoogie initialized [2018-06-25 10:09:46,600 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 10:09:46" (1/1) ... [2018-06-25 10:09:46,671 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 10:09:46 Unit [2018-06-25 10:09:46,672 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-25 10:09:46,672 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-25 10:09:46,672 INFO ]: Initializing Boogie Preprocessor... [2018-06-25 10:09:46,672 INFO ]: Boogie Preprocessor initialized [2018-06-25 10:09:46,692 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 10:09:46" (1/1) ... [2018-06-25 10:09:46,692 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 10:09:46" (1/1) ... [2018-06-25 10:09:46,709 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 10:09:46" (1/1) ... [2018-06-25 10:09:46,709 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 10:09:46" (1/1) ... [2018-06-25 10:09:46,725 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 10:09:46" (1/1) ... [2018-06-25 10:09:46,730 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 10:09:46" (1/1) ... [2018-06-25 10:09:46,734 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 10:09:46" (1/1) ... [2018-06-25 10:09:46,744 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-25 10:09:46,745 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-25 10:09:46,745 INFO ]: Initializing RCFGBuilder... [2018-06-25 10:09:46,745 INFO ]: RCFGBuilder initialized [2018-06-25 10:09:46,745 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 10:09:46" (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 [2018-06-25 10:09:46,764 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-25 10:09:46,764 INFO ]: Found specification of procedure gotoProc [2018-06-25 10:09:46,764 INFO ]: Found implementation of procedure gotoProc [2018-06-25 10:09:46,764 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-25 10:09:46,764 INFO ]: Found specification of procedure Ultimate.START [2018-06-25 10:09:46,764 INFO ]: Found implementation of procedure Ultimate.START [2018-06-25 10:09:47,644 INFO ]: Using library mode [2018-06-25 10:09:47,645 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 10:09:47 BoogieIcfgContainer [2018-06-25 10:09:47,645 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-25 10:09:47,646 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-25 10:09:47,646 INFO ]: Initializing TraceAbstraction... [2018-06-25 10:09:47,651 INFO ]: TraceAbstraction initialized [2018-06-25 10:09:47,652 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 25.06 10:09:46" (1/3) ... [2018-06-25 10:09:47,652 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42eb83d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 25.06 10:09:47, skipping insertion in model container [2018-06-25 10:09:47,652 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 25.06 10:09:46" (2/3) ... [2018-06-25 10:09:47,653 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42eb83d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.06 10:09:47, skipping insertion in model container [2018-06-25 10:09:47,653 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.06 10:09:47" (3/3) ... [2018-06-25 10:09:47,655 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver [2018-06-25 10:09:47,662 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-25 10:09:47,671 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-25 10:09:47,714 INFO ]: Using default assertion order modulation [2018-06-25 10:09:47,714 INFO ]: Interprodecural is true [2018-06-25 10:09:47,714 INFO ]: Hoare is false [2018-06-25 10:09:47,715 INFO ]: Compute interpolants for FPandBP [2018-06-25 10:09:47,715 INFO ]: Backedges is TWOTRACK [2018-06-25 10:09:47,715 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-25 10:09:47,715 INFO ]: Difference is false [2018-06-25 10:09:47,715 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-25 10:09:47,715 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-25 10:09:47,729 INFO ]: Start isEmpty. Operand 12 states. [2018-06-25 10:09:47,738 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-25 10:09:47,738 INFO ]: Found error trace [2018-06-25 10:09:47,742 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-25 10:09:47,742 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 10:09:47,746 INFO ]: Analyzing trace with hash 1403110784, now seen corresponding path program 1 times [2018-06-25 10:09:47,748 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 10:09:47,748 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 10:09:47,787 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 10:09:47,787 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 10:09:47,787 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 10:09:47,818 INFO ]: Conjunction of SSA is unsat [2018-06-25 10:09:47,856 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 10:09:47,858 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 10:09:47,858 INFO ]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-06-25 10:09:47,860 INFO ]: Interpolant automaton has 2 states [2018-06-25 10:09:47,875 INFO ]: Constructing interpolant automaton starting with 2 interpolants. [2018-06-25 10:09:47,875 INFO ]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 10:09:47,877 INFO ]: Start difference. First operand 12 states. Second operand 2 states. [2018-06-25 10:09:47,914 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 10:09:47,915 INFO ]: Finished difference Result 10 states and 39 transitions. [2018-06-25 10:09:47,915 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-06-25 10:09:47,916 INFO ]: Start accepts. Automaton has 2 states. Word has length 6 [2018-06-25 10:09:47,916 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 10:09:47,924 INFO ]: With dead ends: 10 [2018-06-25 10:09:47,924 INFO ]: Without dead ends: 10 [2018-06-25 10:09:47,926 INFO ]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-06-25 10:09:47,939 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-25 10:09:47,959 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-25 10:09:47,960 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-25 10:09:47,961 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 39 transitions. [2018-06-25 10:09:47,962 INFO ]: Start accepts. Automaton has 10 states and 39 transitions. Word has length 6 [2018-06-25 10:09:47,963 INFO ]: Finished accepts. word is rejected. [2018-06-25 10:09:47,963 INFO ]: Abstraction has 10 states and 39 transitions. [2018-06-25 10:09:47,963 INFO ]: Interpolant automaton has 2 states. [2018-06-25 10:09:47,963 INFO ]: Start isEmpty. Operand 10 states and 39 transitions. [2018-06-25 10:09:47,963 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 10:09:47,964 INFO ]: Found error trace [2018-06-25 10:09:47,964 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 10:09:47,966 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 10:09:47,966 INFO ]: Analyzing trace with hash 539039998, now seen corresponding path program 1 times [2018-06-25 10:09:47,966 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 10:09:47,966 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 10:09:47,967 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 10:09:47,967 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 10:09:47,967 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 10:09:48,001 INFO ]: Conjunction of SSA is unsat [2018-06-25 10:09:48,194 WARN ]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-06-25 10:09:48,195 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 10:09:48,195 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 10:09:48,195 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 10:09:48,197 INFO ]: Interpolant automaton has 3 states [2018-06-25 10:09:48,197 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 10:09:48,197 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 10:09:48,197 INFO ]: Start difference. First operand 10 states and 39 transitions. Second operand 3 states. [2018-06-25 10:09:48,433 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 10:09:48,434 INFO ]: Finished difference Result 11 states and 42 transitions. [2018-06-25 10:09:48,435 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 10:09:48,435 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 10:09:48,435 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 10:09:48,436 INFO ]: With dead ends: 11 [2018-06-25 10:09:48,436 INFO ]: Without dead ends: 11 [2018-06-25 10:09:48,436 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 10:09:48,437 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-25 10:09:48,441 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-25 10:09:48,441 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-25 10:09:48,441 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 42 transitions. [2018-06-25 10:09:48,441 INFO ]: Start accepts. Automaton has 11 states and 42 transitions. Word has length 7 [2018-06-25 10:09:48,441 INFO ]: Finished accepts. word is rejected. [2018-06-25 10:09:48,441 INFO ]: Abstraction has 11 states and 42 transitions. [2018-06-25 10:09:48,441 INFO ]: Interpolant automaton has 3 states. [2018-06-25 10:09:48,442 INFO ]: Start isEmpty. Operand 11 states and 42 transitions. [2018-06-25 10:09:48,442 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 10:09:48,442 INFO ]: Found error trace [2018-06-25 10:09:48,442 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 10:09:48,442 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 10:09:48,442 INFO ]: Analyzing trace with hash 527957746, now seen corresponding path program 1 times [2018-06-25 10:09:48,442 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 10:09:48,442 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 10:09:48,443 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 10:09:48,443 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 10:09:48,443 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 10:09:48,461 INFO ]: Conjunction of SSA is unsat [2018-06-25 10:09:48,605 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-25 10:09:48,605 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-25 10:09:48,606 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-25 10:09:48,606 INFO ]: Interpolant automaton has 3 states [2018-06-25 10:09:48,606 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-25 10:09:48,606 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 10:09:48,606 INFO ]: Start difference. First operand 11 states and 42 transitions. Second operand 3 states. [2018-06-25 10:09:48,834 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-25 10:09:48,834 INFO ]: Finished difference Result 13 states and 48 transitions. [2018-06-25 10:09:48,836 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-25 10:09:48,836 INFO ]: Start accepts. Automaton has 3 states. Word has length 7 [2018-06-25 10:09:48,836 INFO ]: Finished accepts. some prefix is accepted. [2018-06-25 10:09:48,836 INFO ]: With dead ends: 13 [2018-06-25 10:09:48,836 INFO ]: Without dead ends: 13 [2018-06-25 10:09:48,837 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-25 10:09:48,837 INFO ]: Start minimizeSevpa. Operand 13 states. [2018-06-25 10:09:48,839 INFO ]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-06-25 10:09:48,839 INFO ]: Start removeUnreachable. Operand 13 states. [2018-06-25 10:09:48,839 INFO ]: Finished removeUnreachable. Reduced from 13 states to 13 states and 48 transitions. [2018-06-25 10:09:48,839 INFO ]: Start accepts. Automaton has 13 states and 48 transitions. Word has length 7 [2018-06-25 10:09:48,839 INFO ]: Finished accepts. word is rejected. [2018-06-25 10:09:48,839 INFO ]: Abstraction has 13 states and 48 transitions. [2018-06-25 10:09:48,839 INFO ]: Interpolant automaton has 3 states. [2018-06-25 10:09:48,840 INFO ]: Start isEmpty. Operand 13 states and 48 transitions. [2018-06-25 10:09:48,840 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-25 10:09:48,840 INFO ]: Found error trace [2018-06-25 10:09:48,840 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-25 10:09:48,840 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-25 10:09:48,840 INFO ]: Analyzing trace with hash 559357460, now seen corresponding path program 1 times [2018-06-25 10:09:48,840 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-25 10:09:48,840 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-25 10:09:48,845 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 10:09:48,845 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-25 10:09:48,845 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-25 10:09:48,879 INFO ]: Conjunction of SSA is sat [2018-06-25 10:09:48,890 INFO ]: Counterexample might be feasible [2018-06-25 10:09:48,912 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.06 10:09:48 BoogieIcfgContainer [2018-06-25 10:09:48,912 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-25 10:09:48,913 INFO ]: Toolchain (without parser) took 2322.86 ms. Allocated memory was 309.3 MB in the beginning and 328.7 MB in the end (delta: 19.4 MB). Free memory was 242.7 MB in the beginning and 276.2 MB in the end (delta: -33.4 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 10:09:48,914 INFO ]: SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 10:09:48,914 INFO ]: ChcToBoogie took 75.34 ms. Allocated memory is still 309.3 MB. Free memory was 241.7 MB in the beginning and 238.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. [2018-06-25 10:09:48,916 INFO ]: Boogie Preprocessor took 71.81 ms. Allocated memory is still 309.3 MB. Free memory was 238.7 MB in the beginning and 236.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. [2018-06-25 10:09:48,916 INFO ]: RCFGBuilder took 900.22 ms. Allocated memory is still 309.3 MB. Free memory was 235.7 MB in the beginning and 201.7 MB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 3.6 GB. [2018-06-25 10:09:48,917 INFO ]: TraceAbstraction took 1266.11 ms. Allocated memory was 309.3 MB in the beginning and 328.7 MB in the end (delta: 19.4 MB). Free memory was 200.7 MB in the beginning and 276.2 MB in the end (delta: -75.5 MB). There was no memory consumed. Max. memory is 3.6 GB. [2018-06-25 10:09:48,921 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.08 ms. Allocated memory is still 309.3 MB. Free memory is still 272.8 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 75.34 ms. Allocated memory is still 309.3 MB. Free memory was 241.7 MB in the beginning and 238.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 71.81 ms. Allocated memory is still 309.3 MB. Free memory was 238.7 MB in the beginning and 236.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 3.6 GB. * RCFGBuilder took 900.22 ms. Allocated memory is still 309.3 MB. Free memory was 235.7 MB in the beginning and 201.7 MB in the end (delta: 34.0 MB). Peak memory consumption was 34.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1266.11 ms. Allocated memory was 309.3 MB in the beginning and 328.7 MB in the end (delta: 19.4 MB). Free memory was 200.7 MB in the beginning and 276.2 MB in the end (delta: -75.5 MB). There was no memory consumed. 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, 0, 0, 0, 0, 0, 0); [L0] gotoSwitch := gotoSwitch_in; [L0] assume (((!(hbv_False_4_Array_Int_Int[hbv_False_6_Int + hbv_False_5_Int] == 41) && !(41 == hbv_False_2_Array_Int_Int[hbv_False_7_Int + hbv_False_1_Int])) && !(hbv_False_1_Int != 0)) && !(hbv_False_5_Int != 0)) && !(0 == 0 && hbv_False_2_Array_Int_Int[hbv_False_3_Int] == hbv_False_4_Array_Int_Int[hbv_False_3_Int]); [L0] hhv_INV_MAIN_1_0_Int, hhv_INV_MAIN_1_1_Int, hhv_INV_MAIN_1_2_Int, hhv_INV_MAIN_1_3_Int, hhv_INV_MAIN_1_4_Int, hhv_INV_MAIN_1_5_Int, hhv_INV_MAIN_1_6_Int, hhv_INV_MAIN_1_7_Int, hhv_INV_MAIN_1_8_Int, hhv_INV_MAIN_1_9_Int := hbv_False_8_Int, hbv_False_1_Int, hbv_False_7_Int, skolem24(hbv_False_7_Int, hbv_False_8_Int, hbv_False_1_Int, hbv_False_9_Int, hbv_False_6_Int, hbv_False_2_Array_Int_Int, hbv_False_5_Int, hbv_False_4_Array_Int_Int), hbv_False_2_Array_Int_Int[skolem24(hbv_False_7_Int, hbv_False_8_Int, hbv_False_1_Int, hbv_False_9_Int, hbv_False_6_Int, hbv_False_2_Array_Int_Int, hbv_False_5_Int, hbv_False_4_Array_Int_Int)], hbv_False_9_Int, hbv_False_5_Int, hbv_False_6_Int, skolem25(hbv_False_7_Int, hbv_False_8_Int, hbv_False_1_Int, hbv_False_9_Int, hbv_False_6_Int, hbv_False_2_Array_Int_Int, hbv_False_5_Int, hbv_False_4_Array_Int_Int), hbv_False_4_Array_Int_Int[skolem25(hbv_False_7_Int, hbv_False_8_Int, hbv_False_1_Int, hbv_False_9_Int, hbv_False_6_Int, hbv_False_2_Array_Int_Int, hbv_False_5_Int, hbv_False_4_Array_Int_Int)]; [L0] havoc hbv_False_5_Int, hbv_False_8_Int, hbv_False_2_Array_Int_Int, hbv_False_3_Int, hbv_False_6_Int, hbv_False_4_Array_Int_Int, hbv_False_9_Int, hbv_False_7_Int, hbv_False_1_Int; [L0] assume (((((((((((((((hhv_INV_MAIN_1_9_Int == hbv_INV_MAIN_1_5_Array_Int_Int[hbv_INV_MAIN_1_6_Int := hhv_INV_MAIN_1_7_Int][hhv_INV_MAIN_1_8_Int] && hbv_INV_MAIN_1_4_Int == hbv_INV_MAIN_1_2_Int) && hhv_INV_MAIN_1_6_Int == hbv_INV_MAIN_1_2_Int - 1) && hbv_INV_MAIN_1_6_Int >= 0) && hbv_INV_MAIN_1_1_Int >= 0) && hhv_INV_MAIN_1_2_Int >= 0) && hhv_INV_MAIN_1_2_Int == hhv_INV_MAIN_1_7_Int) && hbv_INV_MAIN_1_1_Int == hbv_INV_MAIN_1_6_Int) && hbv_INV_MAIN_1_3_Array_Int_Int[skolem1(hhv_INV_MAIN_1_2_Int, hhv_INV_MAIN_1_0_Int, hbv_INV_MAIN_1_1_Int, hhv_INV_MAIN_1_5_Int, hhv_INV_MAIN_1_7_Int, hbv_INV_MAIN_1_2_Int, hbv_INV_MAIN_1_3_Array_Int_Int, hbv_INV_MAIN_1_4_Int, hbv_INV_MAIN_1_5_Array_Int_Int, hbv_INV_MAIN_1_6_Int)] == hbv_INV_MAIN_1_5_Array_Int_Int[skolem1(hhv_INV_MAIN_1_2_Int, hhv_INV_MAIN_1_0_Int, hbv_INV_MAIN_1_1_Int, hhv_INV_MAIN_1_5_Int, hhv_INV_MAIN_1_7_Int, hbv_INV_MAIN_1_2_Int, hbv_INV_MAIN_1_3_Array_Int_Int, hbv_INV_MAIN_1_4_Int, hbv_INV_MAIN_1_5_Array_Int_Int, hbv_INV_MAIN_1_6_Int)]) && hhv_INV_MAIN_1_1_Int == hbv_INV_MAIN_1_4_Int - 1) && !(0 == hbv_INV_MAIN_1_4_Int)) && hhv_INV_MAIN_1_7_Int >= 0) && !(hbv_INV_MAIN_1_2_Int == 0)) && hhv_INV_MAIN_1_0_Int == hhv_INV_MAIN_1_5_Int) && hhv_INV_MAIN_1_5_Int >= 0) && hhv_INV_MAIN_1_0_Int >= 0) && hhv_INV_MAIN_1_4_Int == hbv_INV_MAIN_1_3_Array_Int_Int[hbv_INV_MAIN_1_1_Int := hhv_INV_MAIN_1_2_Int][hhv_INV_MAIN_1_3_Int]; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 12 locations, 1 error locations. UNSAFE Result, 1.2s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 111 SDtfs, 0 SDslu, 52 SDs, 0 SdLazy, 26 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 217 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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/coreutils__md5sum.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-Benchmark-0-2018-06-25_10-09-48-939.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/coreutils__md5sum.smt2_AutomizerCHC_Goto.epf_AutomizerCHC.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-25_10-09-48-939.csv Received shutdown request...