java -Xss4m -Xmx4000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCHC_wBE.xml --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -s ../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf -i /storage/chc-comp/eldarica-misc/LIA/HOLA/17.c.smt2 -------------------------------------------------------------------------------- This is Ultimate 0.1.23-14921ce [2018-06-24 20:39:56,831 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-06-24 20:39:56,833 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-06-24 20:39:56,847 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-06-24 20:39:56,847 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-06-24 20:39:56,848 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-06-24 20:39:56,851 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-06-24 20:39:56,853 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-06-24 20:39:56,855 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-06-24 20:39:56,855 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-06-24 20:39:56,857 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-06-24 20:39:56,857 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-06-24 20:39:56,858 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-06-24 20:39:56,859 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-06-24 20:39:56,860 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-06-24 20:39:56,862 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-06-24 20:39:56,864 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-06-24 20:39:56,873 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-06-24 20:39:56,875 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-06-24 20:39:56,876 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-06-24 20:39:56,877 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-06-24 20:39:56,883 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-06-24 20:39:56,883 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-06-24 20:39:56,883 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-06-24 20:39:56,884 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-06-24 20:39:56,885 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-06-24 20:39:56,885 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-06-24 20:39:56,886 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-06-24 20:39:56,890 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-06-24 20:39:56,890 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-06-24 20:39:56,891 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-06-24 20:39:56,891 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-06-24 20:39:56,892 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-06-24 20:39:56,892 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-06-24 20:39:56,894 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-06-24 20:39:56,894 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/chc/AutomizerCHC/AutomizerCHC_Goto.epf [2018-06-24 20:39:56,918 INFO L110 SettingsManager]: Loading preferences was successful [2018-06-24 20:39:56,919 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-06-24 20:39:56,919 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-06-24 20:39:56,919 INFO L133 SettingsManager]: * Logger pattern=[%d{ISO8601} %-5p]: %m%n [2018-06-24 20:39:56,920 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-06-24 20:39:56,920 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-06-24 20:39:56,921 INFO L133 SettingsManager]: * Create interprocedural compositions=false [2018-06-24 20:39:56,921 INFO L133 SettingsManager]: * Use SBE=true [2018-06-24 20:39:56,921 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-06-24 20:39:56,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-06-24 20:39:56,921 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-06-24 20:39:56,922 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-06-24 20:39:56,924 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-06-24 20:39:56,924 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-06-24 20:39:56,925 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-06-24 20:39:56,925 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-06-24 20:39:56,925 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-06-24 20:39:56,925 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-06-24 20:39:56,925 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-06-24 20:39:56,926 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-06-24 20:39:56,926 INFO L133 SettingsManager]: * Compute trace for counterexample result=false [2018-06-24 20:39:56,927 INFO L131 SettingsManager]: Preferences of SmtParser differ from their defaults: [2018-06-24 20:39:56,927 INFO L133 SettingsManager]: * Use TreeAutomizer as solver for the given file (assumes the file contains Horn clauses only).=true [2018-06-24 20:39:56,980 INFO ]: Repository-Root is: /tmp [2018-06-24 20:39:57,000 INFO ]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-06-24 20:39:57,005 INFO ]: [Toolchain 1]: Toolchain data selected. [2018-06-24 20:39:57,006 INFO ]: Initializing SmtParser... [2018-06-24 20:39:57,006 INFO ]: SmtParser initialized [2018-06-24 20:39:57,007 INFO ]: [Toolchain 1]: Parsing single file: /storage/chc-comp/eldarica-misc/LIA/HOLA/17.c.smt2 [2018-06-24 20:39:57,008 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 20:39:57,102 INFO ]: Executing SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/17.c.smt2 unknown [2018-06-24 20:39:57,478 INFO ]: Succesfully executed SMT file /storage/chc-comp/eldarica-misc/LIA/HOLA/17.c.smt2 [2018-06-24 20:39:57,487 INFO ]: ####################### [Toolchain 1] ####################### [2018-06-24 20:39:57,492 INFO ]: Walking toolchain with 5 elements. [2018-06-24 20:39:57,493 INFO ]: ------------------------ChcToBoogie---------------------------- [2018-06-24 20:39:57,493 INFO ]: Initializing ChcToBoogie... [2018-06-24 20:39:57,493 INFO ]: ChcToBoogie initialized [2018-06-24 20:39:57,505 INFO ]: Executing the observer ChcToBoogieObserver from plugin ChcToBoogie for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:39:57" (1/1) ... [2018-06-24 20:39:57,623 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:57 Unit [2018-06-24 20:39:57,623 INFO ]: ------------------------ END ChcToBoogie---------------------------- [2018-06-24 20:39:57,624 INFO ]: ------------------------Boogie Preprocessor---------------------------- [2018-06-24 20:39:57,624 INFO ]: Initializing Boogie Preprocessor... [2018-06-24 20:39:57,624 INFO ]: Boogie Preprocessor initialized [2018-06-24 20:39:57,645 INFO ]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:57" (1/1) ... [2018-06-24 20:39:57,645 INFO ]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:57" (1/1) ... [2018-06-24 20:39:57,653 INFO ]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:57" (1/1) ... [2018-06-24 20:39:57,653 INFO ]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:57" (1/1) ... [2018-06-24 20:39:57,659 INFO ]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:57" (1/1) ... [2018-06-24 20:39:57,661 INFO ]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:57" (1/1) ... [2018-06-24 20:39:57,662 INFO ]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:57" (1/1) ... [2018-06-24 20:39:57,672 INFO ]: ------------------------ END Boogie Preprocessor---------------------------- [2018-06-24 20:39:57,673 INFO ]: ------------------------RCFGBuilder---------------------------- [2018-06-24 20:39:57,673 INFO ]: Initializing RCFGBuilder... [2018-06-24 20:39:57,673 INFO ]: RCFGBuilder initialized [2018-06-24 20:39:57,673 INFO ]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:57" (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 [2018-06-24 20:39:57,686 INFO ]: Specification and implementation of procedure gotoProc given in one single declaration [2018-06-24 20:39:57,686 INFO ]: Found specification of procedure gotoProc [2018-06-24 20:39:57,686 INFO ]: Found implementation of procedure gotoProc [2018-06-24 20:39:57,686 INFO ]: Specification and implementation of procedure Ultimate.START given in one single declaration [2018-06-24 20:39:57,686 INFO ]: Found specification of procedure Ultimate.START [2018-06-24 20:39:57,686 INFO ]: Found implementation of procedure Ultimate.START [2018-06-24 20:39:58,113 INFO ]: Using library mode [2018-06-24 20:39:58,113 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:58 BoogieIcfgContainer [2018-06-24 20:39:58,114 INFO ]: ------------------------ END RCFGBuilder---------------------------- [2018-06-24 20:39:58,114 INFO ]: ------------------------BlockEncodingV2---------------------------- [2018-06-24 20:39:58,114 INFO ]: Initializing BlockEncodingV2... [2018-06-24 20:39:58,115 INFO ]: BlockEncodingV2 initialized [2018-06-24 20:39:58,115 INFO ]: Executing the observer BlockEncodingObserver from plugin BlockEncodingV2 for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:58" (1/1) ... [2018-06-24 20:39:58,133 INFO ]: Initial Icfg 32 locations, 33 edges [2018-06-24 20:39:58,134 INFO ]: Using Remove infeasible edges [2018-06-24 20:39:58,135 INFO ]: Using Maximize final states [2018-06-24 20:39:58,135 INFO ]: Using Minimize states even if more edges are added than removed.=false [2018-06-24 20:39:58,136 INFO ]: Using Minimize states using LBE with the strategy=MULTI [2018-06-24 20:39:58,140 INFO ]: Using Remove sink states [2018-06-24 20:39:58,141 INFO ]: Using Apply optimizations until nothing changes=true [2018-06-24 20:39:58,141 INFO ]: Using Use SBE [2018-06-24 20:39:58,148 INFO ]: SBE split 0 edges [2018-06-24 20:39:58,153 INFO ]: Removed 2 edges and 2 locations because of local infeasibility [2018-06-24 20:39:58,154 INFO ]: 0 new accepting states [2018-06-24 20:39:58,984 INFO ]: Removed 64 edges and 24 locations by large block encoding [2018-06-24 20:39:58,986 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:58,987 INFO ]: Removed 1 edges and 0 locations because of local infeasibility [2018-06-24 20:39:58,987 INFO ]: 0 new accepting states [2018-06-24 20:39:58,987 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:39:58,987 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:58,990 INFO ]: Removed 0 edges and 0 locations because of local infeasibility [2018-06-24 20:39:58,990 INFO ]: 0 new accepting states [2018-06-24 20:39:58,990 INFO ]: Removed 0 edges and 0 locations by large block encoding [2018-06-24 20:39:58,990 INFO ]: Removed 0 edges and 0 locations by removing sink states [2018-06-24 20:39:58,990 INFO ]: Encoded RCFG 6 locations, 7 edges [2018-06-24 20:39:58,990 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:39:58 BasicIcfg [2018-06-24 20:39:58,991 INFO ]: ------------------------ END BlockEncodingV2---------------------------- [2018-06-24 20:39:58,991 INFO ]: ------------------------TraceAbstraction---------------------------- [2018-06-24 20:39:58,991 INFO ]: Initializing TraceAbstraction... [2018-06-24 20:39:58,994 INFO ]: TraceAbstraction initialized [2018-06-24 20:39:58,994 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.source.smtparser OTHER 24.06 08:39:57" (1/4) ... [2018-06-24 20:39:58,995 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47960d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction OTHER 24.06 08:39:58, skipping insertion in model container [2018-06-24 20:39:58,995 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.chctoboogie AST 24.06 08:39:57" (2/4) ... [2018-06-24 20:39:58,995 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47960d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:39:58, skipping insertion in model container [2018-06-24 20:39:58,995 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:39:58" (3/4) ... [2018-06-24 20:39:58,996 INFO ]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47960d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:39:58, skipping insertion in model container [2018-06-24 20:39:58,996 INFO ]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.blockencoding CFG 24.06 08:39:58" (4/4) ... [2018-06-24 20:39:58,997 INFO ]: Analyzing ICFG de.uni_freiburg.informatik.ultimate.plugins.chctoboogie.ChcToBoogieObserver_BEv2 [2018-06-24 20:39:59,006 INFO ]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-06-24 20:39:59,013 INFO ]: Appying trace abstraction to program that has 1 error locations. [2018-06-24 20:39:59,057 INFO ]: Using default assertion order modulation [2018-06-24 20:39:59,057 INFO ]: Interprodecural is true [2018-06-24 20:39:59,058 INFO ]: Hoare is false [2018-06-24 20:39:59,058 INFO ]: Compute interpolants for FPandBP [2018-06-24 20:39:59,058 INFO ]: Backedges is TWOTRACK [2018-06-24 20:39:59,058 INFO ]: Determinization is PREDICATE_ABSTRACTION [2018-06-24 20:39:59,058 INFO ]: Difference is false [2018-06-24 20:39:59,058 INFO ]: Minimize is MINIMIZE_SEVPA [2018-06-24 20:39:59,058 INFO ]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-06-24 20:39:59,078 INFO ]: Start isEmpty. Operand 6 states. [2018-06-24 20:39:59,097 INFO ]: Finished isEmpty. Found accepting run of length 6 [2018-06-24 20:39:59,097 INFO ]: Found error trace [2018-06-24 20:39:59,098 INFO ]: trace histogram [1, 1, 1, 1, 1] [2018-06-24 20:39:59,098 INFO ]: === Iteration 1 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:59,103 INFO ]: Analyzing trace with hash 35433091, now seen corresponding path program 1 times [2018-06-24 20:39:59,105 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:59,106 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:59,154 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:59,154 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:59,154 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:59,263 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:59,459 INFO ]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:59,461 INFO ]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-06-24 20:39:59,461 INFO ]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-06-24 20:39:59,462 INFO ]: Interpolant automaton has 3 states [2018-06-24 20:39:59,475 INFO ]: Constructing interpolant automaton starting with 3 interpolants. [2018-06-24 20:39:59,476 INFO ]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:59,479 INFO ]: Start difference. First operand 6 states. Second operand 3 states. [2018-06-24 20:39:59,561 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:39:59,561 INFO ]: Finished difference Result 7 states and 9 transitions. [2018-06-24 20:39:59,563 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-06-24 20:39:59,565 INFO ]: Start accepts. Automaton has 3 states. Word has length 5 [2018-06-24 20:39:59,565 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:39:59,574 INFO ]: With dead ends: 7 [2018-06-24 20:39:59,574 INFO ]: Without dead ends: 7 [2018-06-24 20:39:59,575 INFO ]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-06-24 20:39:59,598 INFO ]: Start minimizeSevpa. Operand 7 states. [2018-06-24 20:39:59,616 INFO ]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-06-24 20:39:59,617 INFO ]: Start removeUnreachable. Operand 7 states. [2018-06-24 20:39:59,618 INFO ]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-06-24 20:39:59,619 INFO ]: Start accepts. Automaton has 7 states and 9 transitions. Word has length 5 [2018-06-24 20:39:59,619 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:39:59,619 INFO ]: Abstraction has 7 states and 9 transitions. [2018-06-24 20:39:59,619 INFO ]: Interpolant automaton has 3 states. [2018-06-24 20:39:59,619 INFO ]: Start isEmpty. Operand 7 states and 9 transitions. [2018-06-24 20:39:59,619 INFO ]: Finished isEmpty. Found accepting run of length 7 [2018-06-24 20:39:59,619 INFO ]: Found error trace [2018-06-24 20:39:59,619 INFO ]: trace histogram [1, 1, 1, 1, 1, 1] [2018-06-24 20:39:59,619 INFO ]: === Iteration 2 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:39:59,620 INFO ]: Analyzing trace with hash 1098286598, now seen corresponding path program 1 times [2018-06-24 20:39:59,620 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:39:59,620 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:39:59,621 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:59,621 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:39:59,621 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:39:59,702 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:39:59,976 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:39:59,976 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:39:59,976 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 20:39:59,987 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:40:00,103 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:40:00,114 INFO ]: Computing forward predicates... [2018-06-24 20:40:00,259 INFO ]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:40:00,293 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:40:00,293 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2018-06-24 20:40:00,294 INFO ]: Interpolant automaton has 5 states [2018-06-24 20:40:00,294 INFO ]: Constructing interpolant automaton starting with 5 interpolants. [2018-06-24 20:40:00,294 INFO ]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-06-24 20:40:00,294 INFO ]: Start difference. First operand 7 states and 9 transitions. Second operand 5 states. [2018-06-24 20:40:00,491 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:40:00,491 INFO ]: Finished difference Result 10 states and 15 transitions. [2018-06-24 20:40:00,491 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:40:00,491 INFO ]: Start accepts. Automaton has 5 states. Word has length 6 [2018-06-24 20:40:00,492 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:40:00,492 INFO ]: With dead ends: 10 [2018-06-24 20:40:00,492 INFO ]: Without dead ends: 10 [2018-06-24 20:40:00,493 INFO ]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:40:00,493 INFO ]: Start minimizeSevpa. Operand 10 states. [2018-06-24 20:40:00,494 INFO ]: Finished minimizeSevpa. Reduced states from 10 to 8. [2018-06-24 20:40:00,494 INFO ]: Start removeUnreachable. Operand 8 states. [2018-06-24 20:40:00,494 INFO ]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-06-24 20:40:00,494 INFO ]: Start accepts. Automaton has 8 states and 11 transitions. Word has length 6 [2018-06-24 20:40:00,494 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:40:00,494 INFO ]: Abstraction has 8 states and 11 transitions. [2018-06-24 20:40:00,494 INFO ]: Interpolant automaton has 5 states. [2018-06-24 20:40:00,494 INFO ]: Start isEmpty. Operand 8 states and 11 transitions. [2018-06-24 20:40:00,494 INFO ]: Finished isEmpty. Found accepting run of length 8 [2018-06-24 20:40:00,494 INFO ]: Found error trace [2018-06-24 20:40:00,494 INFO ]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-06-24 20:40:00,494 INFO ]: === Iteration 3 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:40:00,494 INFO ]: Analyzing trace with hash -310222490, now seen corresponding path program 1 times [2018-06-24 20:40:00,495 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:40:00,495 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:40:00,495 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:40:00,495 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:40:00,495 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:40:00,524 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:40:00,686 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:40:00,686 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:40:00,686 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:40:00,693 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:40:00,803 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:40:00,809 INFO ]: Computing forward predicates... [2018-06-24 20:40:00,914 INFO ]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:40:00,947 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:40:00,947 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-06-24 20:40:00,947 INFO ]: Interpolant automaton has 6 states [2018-06-24 20:40:00,948 INFO ]: Constructing interpolant automaton starting with 6 interpolants. [2018-06-24 20:40:00,948 INFO ]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-06-24 20:40:00,948 INFO ]: Start difference. First operand 8 states and 11 transitions. Second operand 6 states. [2018-06-24 20:40:01,148 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:40:01,148 INFO ]: Finished difference Result 11 states and 16 transitions. [2018-06-24 20:40:01,148 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-06-24 20:40:01,149 INFO ]: Start accepts. Automaton has 6 states. Word has length 7 [2018-06-24 20:40:01,149 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:40:01,149 INFO ]: With dead ends: 11 [2018-06-24 20:40:01,149 INFO ]: Without dead ends: 9 [2018-06-24 20:40:01,149 INFO ]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-06-24 20:40:01,149 INFO ]: Start minimizeSevpa. Operand 9 states. [2018-06-24 20:40:01,150 INFO ]: Finished minimizeSevpa. Reduced states from 9 to 9. [2018-06-24 20:40:01,151 INFO ]: Start removeUnreachable. Operand 9 states. [2018-06-24 20:40:01,151 INFO ]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2018-06-24 20:40:01,151 INFO ]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2018-06-24 20:40:01,151 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:40:01,151 INFO ]: Abstraction has 9 states and 11 transitions. [2018-06-24 20:40:01,151 INFO ]: Interpolant automaton has 6 states. [2018-06-24 20:40:01,151 INFO ]: Start isEmpty. Operand 9 states and 11 transitions. [2018-06-24 20:40:01,151 INFO ]: Finished isEmpty. Found accepting run of length 9 [2018-06-24 20:40:01,151 INFO ]: Found error trace [2018-06-24 20:40:01,151 INFO ]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2018-06-24 20:40:01,151 INFO ]: === Iteration 4 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:40:01,152 INFO ]: Analyzing trace with hash -1110218711, now seen corresponding path program 2 times [2018-06-24 20:40:01,152 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:40:01,152 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:40:01,152 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:40:01,153 INFO ]: Keeping assertion order NOT_INCREMENTALLY [2018-06-24 20:40:01,153 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:40:01,181 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:40:01,297 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:40:01,297 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:40:01,297 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:40:01,302 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-06-24 20:40:01,416 INFO ]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-06-24 20:40:01,417 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:40:01,421 INFO ]: Computing forward predicates... [2018-06-24 20:40:01,469 INFO ]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:40:01,492 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:40:01,492 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-06-24 20:40:01,492 INFO ]: Interpolant automaton has 7 states [2018-06-24 20:40:01,492 INFO ]: Constructing interpolant automaton starting with 7 interpolants. [2018-06-24 20:40:01,492 INFO ]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-06-24 20:40:01,493 INFO ]: Start difference. First operand 9 states and 11 transitions. Second operand 7 states. [2018-06-24 20:40:01,563 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:40:01,563 INFO ]: Finished difference Result 14 states and 19 transitions. [2018-06-24 20:40:01,563 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-06-24 20:40:01,563 INFO ]: Start accepts. Automaton has 7 states. Word has length 8 [2018-06-24 20:40:01,563 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:40:01,564 INFO ]: With dead ends: 14 [2018-06-24 20:40:01,564 INFO ]: Without dead ends: 11 [2018-06-24 20:40:01,564 INFO ]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-06-24 20:40:01,564 INFO ]: Start minimizeSevpa. Operand 11 states. [2018-06-24 20:40:01,565 INFO ]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-06-24 20:40:01,566 INFO ]: Start removeUnreachable. Operand 11 states. [2018-06-24 20:40:01,566 INFO ]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2018-06-24 20:40:01,566 INFO ]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2018-06-24 20:40:01,566 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:40:01,566 INFO ]: Abstraction has 11 states and 14 transitions. [2018-06-24 20:40:01,566 INFO ]: Interpolant automaton has 7 states. [2018-06-24 20:40:01,566 INFO ]: Start isEmpty. Operand 11 states and 14 transitions. [2018-06-24 20:40:01,566 INFO ]: Finished isEmpty. Found accepting run of length 10 [2018-06-24 20:40:01,566 INFO ]: Found error trace [2018-06-24 20:40:01,566 INFO ]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2018-06-24 20:40:01,567 INFO ]: === Iteration 5 === [Ultimate.STARTErr0AssertViolationASSERT]=== [2018-06-24 20:40:01,567 INFO ]: Analyzing trace with hash -140297786, now seen corresponding path program 3 times [2018-06-24 20:40:01,567 INFO ]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-06-24 20:40:01,567 INFO ]: Using refinement strategy CamelRefinementStrategy [2018-06-24 20:40:01,567 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:40:01,567 INFO ]: Changing assertion order to NOT_INCREMENTALLY [2018-06-24 20:40:01,567 INFO ]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-06-24 20:40:01,597 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:40:01,785 INFO ]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:40:01,785 INFO ]: The current sequences of interpolants are not accepted, trying to find more. [2018-06-24 20:40:01,785 INFO ]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-06-24 20:40:01,793 INFO ]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-06-24 20:40:01,916 INFO ]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2018-06-24 20:40:01,916 INFO ]: Conjunction of SSA is unsat [2018-06-24 20:40:01,924 INFO ]: Computing forward predicates... [2018-06-24 20:40:02,205 INFO ]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-06-24 20:40:02,226 INFO ]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-06-24 20:40:02,226 INFO ]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2018-06-24 20:40:02,227 INFO ]: Interpolant automaton has 11 states [2018-06-24 20:40:02,227 INFO ]: Constructing interpolant automaton starting with 11 interpolants. [2018-06-24 20:40:02,227 INFO ]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2018-06-24 20:40:02,227 INFO ]: Start difference. First operand 11 states and 14 transitions. Second operand 11 states. [2018-06-24 20:40:02,410 INFO ]: Subtrahend was deterministic. Have not used determinization. [2018-06-24 20:40:02,410 INFO ]: Finished difference Result 9 states and 12 transitions. [2018-06-24 20:40:02,410 INFO ]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-06-24 20:40:02,410 INFO ]: Start accepts. Automaton has 11 states. Word has length 9 [2018-06-24 20:40:02,410 INFO ]: Finished accepts. some prefix is accepted. [2018-06-24 20:40:02,410 INFO ]: With dead ends: 9 [2018-06-24 20:40:02,410 INFO ]: Without dead ends: 0 [2018-06-24 20:40:02,411 INFO ]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2018-06-24 20:40:02,411 INFO ]: Start minimizeSevpa. Operand 0 states. [2018-06-24 20:40:02,411 INFO ]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-06-24 20:40:02,411 INFO ]: Start removeUnreachable. Operand 0 states. [2018-06-24 20:40:02,411 INFO ]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-06-24 20:40:02,411 INFO ]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2018-06-24 20:40:02,411 INFO ]: Finished accepts. word is rejected. [2018-06-24 20:40:02,411 INFO ]: Abstraction has 0 states and 0 transitions. [2018-06-24 20:40:02,411 INFO ]: Interpolant automaton has 11 states. [2018-06-24 20:40:02,411 INFO ]: Start isEmpty. Operand 0 states and 0 transitions. [2018-06-24 20:40:02,411 INFO ]: Finished isEmpty. No accepting run. [2018-06-24 20:40:02,413 INFO ]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-06-24 20:40:02,415 INFO ]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:40:02 BasicIcfg [2018-06-24 20:40:02,415 INFO ]: ------------------------ END TraceAbstraction---------------------------- [2018-06-24 20:40:02,415 INFO ]: Toolchain (without parser) took 4927.56 ms. Allocated memory was 304.6 MB in the beginning and 356.0 MB in the end (delta: 51.4 MB). Free memory was 251.0 MB in the beginning and 193.6 MB in the end (delta: 57.4 MB). Peak memory consumption was 108.8 MB. Max. memory is 3.6 GB. [2018-06-24 20:40:02,417 INFO ]: SmtParser took 0.07 ms. Allocated memory is still 304.6 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 3.6 GB. [2018-06-24 20:40:02,417 INFO ]: ChcToBoogie took 130.62 ms. Allocated memory is still 304.6 MB. Free memory was 249.0 MB in the beginning and 247.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:40:02,417 INFO ]: Boogie Preprocessor took 48.46 ms. Allocated memory is still 304.6 MB. Free memory was 247.0 MB in the beginning and 245.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:40:02,418 INFO ]: RCFGBuilder took 440.80 ms. Allocated memory is still 304.6 MB. Free memory was 245.0 MB in the beginning and 223.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:40:02,418 INFO ]: BlockEncodingV2 took 876.60 ms. Allocated memory was 304.6 MB in the beginning and 323.5 MB in the end (delta: 18.9 MB). Free memory was 223.1 MB in the beginning and 264.1 MB in the end (delta: -41.0 MB). Peak memory consumption was 45.3 MB. Max. memory is 3.6 GB. [2018-06-24 20:40:02,419 INFO ]: TraceAbstraction took 3423.21 ms. Allocated memory was 323.5 MB in the beginning and 356.0 MB in the end (delta: 32.5 MB). Free memory was 264.1 MB in the beginning and 193.6 MB in the end (delta: 70.5 MB). Peak memory consumption was 103.0 MB. Max. memory is 3.6 GB. [2018-06-24 20:40:02,422 INFO ]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.blockencoding: - StatisticsResult: Initial Icfg 32 locations, 33 edges - StatisticsResult: Encoded RCFG 6 locations, 7 edges * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * SmtParser took 0.07 ms. Allocated memory is still 304.6 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 3.6 GB. * ChcToBoogie took 130.62 ms. Allocated memory is still 304.6 MB. Free memory was 249.0 MB in the beginning and 247.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * Boogie Preprocessor took 48.46 ms. Allocated memory is still 304.6 MB. Free memory was 247.0 MB in the beginning and 245.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 3.6 GB. * RCFGBuilder took 440.80 ms. Allocated memory is still 304.6 MB. Free memory was 245.0 MB in the beginning and 223.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 3.6 GB. * BlockEncodingV2 took 876.60 ms. Allocated memory was 304.6 MB in the beginning and 323.5 MB in the end (delta: 18.9 MB). Free memory was 223.1 MB in the beginning and 264.1 MB in the end (delta: -41.0 MB). Peak memory consumption was 45.3 MB. Max. memory is 3.6 GB. * TraceAbstraction took 3423.21 ms. Allocated memory was 323.5 MB in the beginning and 356.0 MB in the end (delta: 32.5 MB). Free memory was 264.1 MB in the beginning and 193.6 MB in the end (delta: 70.5 MB). Peak memory consumption was 103.0 MB. Max. memory is 3.6 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [UNKNOWN] : assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 6 locations, 1 error locations. SAFE Result, 3.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 21 SDtfs, 1 SDslu, 43 SDs, 0 SdLazy, 84 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=4, 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, 5 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 1148 SizeOfPredicates, 188 NumberOfNonLiveVariables, 2733 ConjunctsInSsa, 221 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 4/40 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/17.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-0-2018-06-24_20-40-02-434.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/17.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-GraphSizeCsvProvider-1-2018-06-24_20-40-02-434.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/17.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-Benchmark-0-2018-06-24_20-40-02-434.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/17.c.smt2_AutomizerCHC_Goto.epf_AutomizerCHC_wBE.xml/Csv-TraceAbstractionBenchmarks-0-2018-06-24_20-40-02-434.csv Received shutdown request...