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/llreve/barthe_safe.c-1.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:46:39,701 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:46:39,705 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:46:39,720 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:46:39,720 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:46:39,721 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:46:39,722 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:46:39,725 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:46:39,726 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:46:39,729 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:46:39,729 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:46:39,730 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:46:39,731 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:46:39,735 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:46:39,736 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:46:39,736 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:46:39,738 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:46:39,751 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:46:39,752 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:46:39,753 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:46:39,754 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:46:39,756 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:46:39,756 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:46:39,757 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:46:39,757 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:46:39,763 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:46:39,764 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:46:39,764 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:46:39,765 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:46:39,766 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:46:39,766 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:46:39,770 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:46:39,770 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:46:39,771 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:46:39,772 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:46:39,772 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:46:39,794 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:46:39,794 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:46:39,795 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:46:39,795 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:46:39,796 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:46:39,796 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:46:39,796 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:46:39,796 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:46:39,799 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:46:39,799 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:46:39,799 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:46:39,799 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:46:39,800 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:46:39,800 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:46:39,800 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:46:39,800 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:46:39,801 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:46:39,801 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:46:39,801 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:46:39,801 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:46:39,801 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:46:39,804 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:46:39,804 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:46:39,856 INFO ]: Repository-Root is: /tmp [2018-06-24 20:46:39,876 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:46:39,879 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:46:39,881 INFO ]: Initializing SmtParser... [2018-06-24 20:46:39,881 INFO ]: SmtParser initialized [2018-06-24 20:46:39,881 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/llreve/barthe_safe.c-1.smt2 [2018-06-24 20:46:39,882 INFO ]: Parsing .smt2 file as a set of Horn Clauses No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-06-24 20:46:39,967 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/barthe_safe.c-1.smt2 unknown [2018-06-24 20:46:40,164 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/llreve/barthe_safe.c-1.smt2 [2018-06-24 20:46:40,167 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:46:40,171 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:46:40,171 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:46:40,171 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:46:40,172 INFO ]: ChcToBoogie initialized [2018-06-24 20:46:40,175 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:46:40" (1/1) ... [2018-06-24 20:46:40,220 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:46:40 Unit [2018-06-24 20:46:40,220 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:46:40,222 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:46:40,222 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:46:40,222 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:46:40,243 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:46:40" (1/1) ... [2018-06-24 20:46:40,243 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:46:40" (1/1) ... [2018-06-24 20:46:40,248 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:46:40" (1/1) ... [2018-06-24 20:46:40,249 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:46:40" (1/1) ... [2018-06-24 20:46:40,253 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:46:40" (1/1) ... [2018-06-24 20:46:40,254 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:46:40" (1/1) ... [2018-06-24 20:46:40,255 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:46:40" (1/1) ... [2018-06-24 20:46:40,256 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:46:40,258 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:46:40,258 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:46:40,258 INFO ]: RCFGBuilder initialized [2018-06-24 20:46:40,258 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:46:40" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2018-06-24 20:46:40,271 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:46:40,271 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:46:40,271 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:46:40,271 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:46:40,271 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:46:40,271 INFO ]: Found implementation of procedure Ultimate.START Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:46:40,535 INFO ]: Using library mode [2018-06-24 20:46:40,535 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:46:40 BoogieIcfgContainer [2018-06-24 20:46:40,535 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:46:40,536 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:46:40,536 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:46:40,537 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:46:40,540 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:46:40" (1/1) ... [2018-06-24 20:46:40,566 INFO ]: Initial Icfg 13 locations, 14 edges [2018-06-24 20:46:40,567 INFO ]: Using Remove infeasible edges [2018-06-24 20:46:40,568 INFO ]: Using Maximize final states [2018-06-24 20:46:40,568 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:46:40,568 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:46:40,570 INFO ]: Using Remove sink states [2018-06-24 20:46:40,573 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:46:40,573 INFO ]: Using Use SBE [2018-06-24 20:46:40,595 INFO ]: SBE split 2 edges [2018-06-24 20:46:40,600 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 20:46:40,601 INFO ]: 0 new accepting states [2018-06-24 20:46:40,698 INFO ]: Removed 9 edges and 4 locations by large block encoding [2018-06-24 20:46:40,699 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:46:40,701 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:46:40,701 INFO ]: 0 new accepting states [2018-06-24 20:46:40,701 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:46:40,701 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:46:40,701 INFO ]: Encoded RCFG 7 locations, 10 edges [2018-06-24 20:46:40,701 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:46:40 BasicIcfg [2018-06-24 20:46:40,701 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:46:40,702 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:46:40,702 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:46:40,705 INFO ]: TraceAbstraction initialized [2018-06-24 20:46:40,705 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:46:40" (1/4) ... [2018-06-24 20:46:40,706 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227be473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:46:40, skipping insertion in model container [2018-06-24 20:46:40,706 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:46:40" (2/4) ... [2018-06-24 20:46:40,707 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227be473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:46:40, skipping insertion in model container [2018-06-24 20:46:40,707 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:46:40" (3/4) ... [2018-06-24 20:46:40,707 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227be473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:46:40, skipping insertion in model container [2018-06-24 20:46:40,707 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:46:40" (4/4) ... [2018-06-24 20:46:40,708 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:46:40,718 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:46:40,723 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:46:40,757 INFO ]: Using default assertion order modulation [2018-06-24 20:46:40,758 INFO ]: Interprodecural is true [2018-06-24 20:46:40,758 INFO ]: Hoare is false [2018-06-24 20:46:40,758 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:46:40,758 INFO ]: Backedges is TWOTRACK [2018-06-24 20:46:40,758 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:46:40,758 INFO ]: Difference is false [2018-06-24 20:46:40,758 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:46:40,758 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:46:40,769 INFO ]: Start isEmpty. Operand 7 states. [2018-06-24 20:46:40,778 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:46:40,778 INFO ]: Found error trace [2018-06-24 20:46:40,779 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:46:40,779 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:46:40,784 INFO ]: Analyzing trace with hash 991436244, now seen corresponding path program 1 times [2018-06-24 20:46:40,786 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:46:40,786 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:46:40,817 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:46:40,817 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:46:40,817 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:46:40,864 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:46:40,935 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:46:40,937 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:46:40,937 INFO ]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-06-24 20:46:40,938 INFO ]: Interpolant automaton has 4 states [2018-06-24 20:46:40,948 INFO ]: Constructing interpolant automaton starting with 4 interpolants. [2018-06-24 20:46:40,949 INFO ]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-06-24 20:46:40,950 INFO ]: Start difference. First operand 7 states. Second operand 4 states. [2018-06-24 20:46:41,057 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:46:41,057 INFO ]: Finished difference Result 11 states and 17 transitions. [2018-06-24 20:46:41,057 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-06-24 20:46:41,058 INFO ]: Start accepts. Automaton has 4 states. Word has length 6 [2018-06-24 20:46:41,058 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:46:41,067 INFO ]: With dead ends: 11 [2018-06-24 20:46:41,067 INFO ]: Without dead ends: 11 [2018-06-24 20:46:41,069 INFO ]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:46:41,082 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 20:46:41,098 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 9. [2018-06-24 20:46:41,099 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:46:41,100 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 14 transitions. [2018-06-24 20:46:41,102 INFO ]: Start accepts. Automaton has 9 states and 14 transitions. Word has length 6 [2018-06-24 20:46:41,102 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:46:41,102 INFO ]: Abstraction has 9 states and 14 transitions. [2018-06-24 20:46:41,102 INFO ]: Interpolant automaton has 4 states. [2018-06-24 20:46:41,102 INFO ]: Start isEmpty. Operand 9 states and 14 transitions. [2018-06-24 20:46:41,102 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:46:41,102 INFO ]: Found error trace [2018-06-24 20:46:41,102 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:46:41,102 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:46:41,102 INFO ]: Analyzing trace with hash 669135633, now seen corresponding path program 1 times [2018-06-24 20:46:41,103 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:46:41,103 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:46:41,103 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:46:41,103 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:46:41,103 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:46:41,131 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:46:41,439 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:46:41,439 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:46:41,439 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:46:41,445 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:46:41,501 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:46:41,510 INFO ]: Computing forward predicates... [2018-06-24 20:46:41,867 INFO ]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:46:41,903 INFO ]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-06-24 20:46:41,904 INFO ]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2018-06-24 20:46:41,904 INFO ]: Interpolant automaton has 7 states [2018-06-24 20:46:41,904 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 20:46:41,905 INFO ]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:46:41,905 INFO ]: Start difference. First operand 9 states and 14 transitions. Second operand 7 states. [2018-06-24 20:46:42,210 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:46:42,210 INFO ]: Finished difference Result 12 states and 19 transitions. [2018-06-24 20:46:42,212 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:46:42,212 INFO ]: Start accepts. Automaton has 7 states. Word has length 7 [2018-06-24 20:46:42,212 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:46:42,214 INFO ]: With dead ends: 12 [2018-06-24 20:46:42,214 INFO ]: Without dead ends: 10 [2018-06-24 20:46:42,214 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-06-24 20:46:42,214 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 20:46:42,216 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-06-24 20:46:42,216 INFO ]: Start removeUnreachable. Operand 10 states. [2018-06-24 20:46:42,217 INFO ]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2018-06-24 20:46:42,218 INFO ]: Start accepts. Automaton has 10 states and 15 transitions. Word has length 7 [2018-06-24 20:46:42,218 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:46:42,218 INFO ]: Abstraction has 10 states and 15 transitions. [2018-06-24 20:46:42,218 INFO ]: Interpolant automaton has 7 states. [2018-06-24 20:46:42,218 INFO ]: Start isEmpty. Operand 10 states and 15 transitions. [2018-06-24 20:46:42,218 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:46:42,218 INFO ]: Found error trace [2018-06-24 20:46:42,218 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:46:42,218 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:46:42,218 INFO ]: Analyzing trace with hash 661270809, now seen corresponding path program 1 times [2018-06-24 20:46:42,218 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:46:42,218 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:46:42,219 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:46:42,219 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:46:42,219 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:46:42,242 INFO ]: Conjunction of SSA is sat [2018-06-24 20:46:42,244 INFO ]: Counterexample might be feasible [2018-06-24 20:46:42,258 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:46:42,259 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:46:42 BasicIcfg [2018-06-24 20:46:42,259 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:46:42,260 INFO ]: Toolchain (without parser) took 2092.72 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 203.7 MB in the end (delta: 58.4 MB). Peak memory consumption was 58.4 MB. Max. memory is 3.6 GB. [2018-06-24 20:46:42,262 INFO ]: SmtParser took 0.05 ms. Allocated memory is still 307.8 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:46:42,262 INFO ]: ChcToBoogie took 50.06 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:46:42,262 INFO ]: Boogie Preprocessor took 34.68 ms. Allocated memory is still 307.8 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:46:42,263 INFO ]: RCFGBuilder took 277.80 ms. Allocated memory is still 307.8 MB. Free memory was 258.1 MB in the beginning and 250.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. [2018-06-24 20:46:42,263 INFO ]: BlockEncodingV2 took 165.80 ms. Allocated memory is still 307.8 MB. Free memory was 250.1 MB in the beginning and 246.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:46:42,265 INFO ]: TraceAbstraction took 1556.98 ms. Allocated memory is still 307.8 MB. Free memory was 244.1 MB in the beginning and 203.7 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 3.6 GB. [2018-06-24 20:46:42,269 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 13 locations, 14 edges - StatisticsResult: Encoded RCFG 7 locations, 10 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.05 ms. Allocated memory is still 307.8 MB. Free memory is still 272.2 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 50.06 ms. Allocated memory is still 307.8 MB. Free memory was 262.1 MB in the beginning and 260.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 34.68 ms. Allocated memory is still 307.8 MB. Free memory was 260.1 MB in the beginning and 258.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 277.80 ms. Allocated memory is still 307.8 MB. Free memory was 258.1 MB in the beginning and 250.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 165.80 ms. Allocated memory is still 307.8 MB. Free memory was 250.1 MB in the beginning and 246.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 3.6 GB. * TraceAbstraction took 1556.98 ms. Allocated memory is still 307.8 MB. Free memory was 244.1 MB in the beginning and 203.7 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 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, 0, 0, 0, 0); [L0] assume !(!(hbv_inv_main29_3_Int == 0) && 0 <= hbv_inv_main29_1_Int + -1 * hbv_inv_main29_2_Int + -1); [L0] hhv_inv_main22_0_Int, hhv_inv_main22_1_Int, hhv_inv_main22_2_Int, hhv_inv_main22_3_Int, hhv_inv_main22_4_Int, hhv_inv_main22_5_Int, hhv_inv_main22_6_Int, hhv_inv_main22_7_Int := hhv_inv_main29_0_Int, hhv_inv_main29_1_Int, hhv_inv_main29_2_Int, hbv_inv_main29_1_Int, hbv_inv_main29_4_Int, hbv_inv_main29_2_Int, hbv_inv_main29_5_Int, hhv_inv_main29_3_Int; [L0] havoc hbv_inv_main29_1_Int, hbv_inv_main29_5_Int, hbv_inv_main29_2_Int, hbv_inv_main29_3_Int, hbv_inv_main29_4_Int; [L0] assume (((!(hbv_inv_main22_1_Int == 0) && hhv_inv_main22_7_Int == hbv_inv_main22_2_Int + hbv_inv_main22_3_Int) && hhv_inv_main22_5_Int == hbv_inv_main22_4_Int + 1) && 0 <= hhv_inv_main22_3_Int + -1 * hbv_inv_main22_4_Int + -1) && hhv_inv_main22_6_Int == hbv_inv_main22_3_Int + 5; [L0] hhv_inv_main22_0_Int, hhv_inv_main22_1_Int, hhv_inv_main22_2_Int, hhv_inv_main22_3_Int, hhv_inv_main22_4_Int, hhv_inv_main22_5_Int, hhv_inv_main22_6_Int, hhv_inv_main22_7_Int := hhv_inv_main22_0_Int, hhv_inv_main22_1_Int, hhv_inv_main22_2_Int, hhv_inv_main22_3_Int, hhv_inv_main22_4_Int, hbv_inv_main22_4_Int, hbv_inv_main22_3_Int, hbv_inv_main22_2_Int; [L0] havoc hbv_inv_main22_4_Int, hbv_inv_main22_1_Int, hbv_inv_main22_3_Int, hbv_inv_main22_2_Int; [L0] assume ((((hhv_inv_main22_3_Int == hhv_inv_main22_0_Int && hhv_inv_main22_5_Int == 0) && !(!(hbv_inv_main22_3_Int == 0) && 0 <= hbv_inv_main22_1_Int + -1 * hbv_inv_main22_2_Int + -1)) && hhv_inv_main22_4_Int == hhv_inv_main22_1_Int) && hhv_inv_main22_6_Int == hhv_inv_main22_1_Int) && hhv_inv_main22_7_Int == 0; [L0] hhv_inv_main9_0_Int, hhv_inv_main9_1_Int, hhv_inv_main9_2_Int, hhv_inv_main9_3_Int, hhv_inv_main9_4_Int, hhv_inv_main9_5_Int, hhv_inv_main9_6_Int := hhv_inv_main22_0_Int, hhv_inv_main22_1_Int, hbv_inv_main22_1_Int, hbv_inv_main22_4_Int, hbv_inv_main22_2_Int, hbv_inv_main22_5_Int, hhv_inv_main22_2_Int; [L0] havoc hbv_inv_main22_4_Int, hbv_inv_main22_5_Int, hbv_inv_main22_1_Int, hbv_inv_main22_3_Int, hbv_inv_main22_2_Int; [L0] RET call gotoProc(0, 0, 0, 0, 0, 0, 0, 0, 0); [L0] assert false; - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 7 locations, 1 error locations. UNSAFE Result, 1.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 12 SDtfs, 6 SDslu, 30 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 301 SizeOfPredicates, 6 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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/barthe_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-46-42-282.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/barthe_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-46-42-282.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/barthe_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-46-42-282.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/barthe_safe.c-1.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-46-42-282.csv Received shutdown request...